St. Petersburg, FL
08/18/2026 06:00 AM
84°F
TEMPERATURE
Winds 10 mph WNW
Sunny
Sunny, with a high near 90. Heat index values as high as 106. West northwest wind 10 to 15 mph, with gusts as high as 20 mph.

Alerts

You have (1) alert(s). Tap to see details.

Heat Advisory

Moderate
Heat Advisory issued August 18 at 12:52AM EDT until August 18 at 7:00PM EDT by NWS Tampa Bay Ruskin FL
NWS Tampa Bay Ruskin FL
Category Certainty Severity
Met Likely Moderate
Status Urgency Category
Actual Expected Met
Effective Ends Expires
08/18/2026 12:52 AM 08/18/2026 07:00 PM 08/18/2026 07:00 PM 
* WHAT...Heat index values up to 112 expected.

* WHERE...Portions of southwest and west central Florida.

* WHEN...From 11 AM this morning to 7 PM EDT this evening.

* IMPACTS...Hot temperatures and high humidity may cause heat
illnesses.
Moonrise
01:47 PM
Moonset
12:36 AM
Sunrise
07:02 AM
Moon Phase
Waxing crescent
Sunset
08:06 PM

Hourly Forecast

Tue, 06:00 AM

Sunny
Winds: 10 mph WNW
84°

Tue, 07:00 AM

Sunny
Winds: 10 mph WNW
84°

Tue, 08:00 AM

Sunny
Winds: 10 mph WNW
85°

Tue, 09:00 AM

Sunny
Winds: 12 mph WNW
86°

Tue, 10:00 AM

Sunny
Winds: 13 mph WNW
88°

Tue, 11:00 AM

Sunny
Winds: 13 mph WNW
88°

Tue, 12:00 PM

Sunny
Winds: 14 mph W
89°

Tue, 01:00 PM

Sunny
Winds: 14 mph W
89°

Tue, 02:00 PM

Sunny
Winds: 15 mph W
89°

Tue, 03:00 PM

Sunny
Winds: 15 mph W
90°

Tue, 04:00 PM

Sunny
Winds: 15 mph WNW
90°

Tue, 05:00 PM

Mostly Sunny
Winds: 14 mph W
89°

Tue, 06:00 PM

Partly Cloudy
Winds: 14 mph WNW
89°

Tue, 07:00 PM

Partly Cloudy
Winds: 14 mph WNW
89°

Tue, 08:00 PM

Partly Cloudy
Winds: 12 mph WNW
87°

Tue, 09:00 PM

Partly Cloudy
Winds: 12 mph WNW
86°

Tue, 10:00 PM

Partly Cloudy
Winds: 10 mph WNW
86°

Tue, 11:00 PM

Partly Cloudy
Winds: 10 mph WNW
86°

Wed, 12:00 AM

Mostly Cloudy
Winds: 10 mph W
86°

Wed, 01:00 AM

Partly Cloudy
Winds: 10 mph W
86°

Wed, 02:00 AM

Partly Cloudy
Winds: 10 mph W
86°

Wed, 03:00 AM

Partly Cloudy
Winds: 10 mph W
85°

Wed, 04:00 AM

Partly Cloudy
Winds: 12 mph WNW
84°

Wed, 05:00 AM

Partly Cloudy
Winds: 12 mph WNW
84°

Today

Sunny
90°
Winds: 10 to 15 mph WNW
Sunny, with a high near 90. Heat index values as high as 106. West northwest wind 10 to 15 mph, with gusts as high as 20 mph.

Tonight

Partly Cloudy
83°
Winds: 10 to 14 mph WNW
Partly cloudy, with a low around 83. Heat index values as high as 104. West northwest wind 10 to 14 mph, with gusts as high as 18 mph. New rainfall amounts less than a tenth of an inch possible.

Wednesday

Scattered Showers And Thunderstorms
90°
Winds: 14 mph WNW
Isolated showers and thunderstorms between 7am and 8am, then scattered showers and thunderstorms between 8am and 11am, then scattered showers and thunderstorms between 11am and 5pm. Mostly sunny, with a high near 90. Heat index values as high as 107. West northwest wind around 14 mph. Chance of precipitation is 50%. New rainfall amounts between a tenth and quarter of an inch possible.

Wednesday Night

Scattered Showers And Thunderstorms
82°
Winds: 6 to 13 mph WNW
Scattered showers and thunderstorms between 8pm and 2am, then scattered showers and thunderstorms. Partly cloudy, with a low around 82. Heat index values as high as 105. West northwest wind 6 to 13 mph. Chance of precipitation is 40%.

Thursday

Chance Showers And Thunderstorms
89°
Winds: 6 to 10 mph WNW
A chance of showers and thunderstorms before 2pm, then scattered showers and thunderstorms. Partly sunny, with a high near 89. West northwest wind 6 to 10 mph. Chance of precipitation is 60%.

Thursday Night

Scattered Showers And Thunderstorms
82°
Winds: 3 to 9 mph W
Scattered showers and thunderstorms. Partly cloudy, with a low around 82. West wind 3 to 9 mph. Chance of precipitation is 30%.

Friday

Scattered Showers And Thunderstorms
88°
Winds: 5 to 12 mph WSW
Scattered showers and thunderstorms. Mostly sunny, with a high near 88. West southwest wind 5 to 12 mph. Chance of precipitation is 30%.

Friday Night

Scattered Showers And Thunderstorms
81°
Winds: 5 to 9 mph WSW
Scattered showers and thunderstorms before 2am, then scattered showers and thunderstorms. Partly cloudy, with a low around 81. West southwest wind 5 to 9 mph. Chance of precipitation is 30%.

Saturday

Scattered Showers And Thunderstorms
88°
Winds: 6 to 13 mph SW
Scattered showers and thunderstorms before 8am, then scattered showers and thunderstorms. Mostly sunny, with a high near 88. Southwest wind 6 to 13 mph. Chance of precipitation is 40%.

Saturday Night

Scattered Showers And Thunderstorms
80°
Winds: 6 to 9 mph SW
Scattered showers and thunderstorms before 8pm, then scattered showers and thunderstorms. Partly cloudy, with a low around 80. Chance of precipitation is 30%.

Sunday

Scattered Showers And Thunderstorms
88°
Winds: 7 to 10 mph SW
Scattered showers and thunderstorms before 8am, then scattered showers and thunderstorms. Mostly sunny, with a high near 88. Chance of precipitation is 40%.

Sunday Night

Isolated Showers And Thunderstorms then Partly Cloudy
81°
Winds: 5 to 9 mph SW
Isolated showers and thunderstorms before 8pm. Partly cloudy, with a low around 81. Chance of precipitation is 20%.

Monday

Isolated Showers And Thunderstorms
89°
Winds: 5 to 9 mph SW
Isolated showers and thunderstorms after 8am. Mostly sunny, with a high near 89. Chance of precipitation is 20%.

Monday Night

Isolated Showers And Thunderstorms then Mostly Clear
80°
Winds: 5 to 9 mph SSW
Isolated showers and thunderstorms before 8pm. Mostly clear, with a low around 80.

Coastal Waters Forecast for Florida

National Weather Service Tampa Bay Ruskin FL

Benign conditions with onshore flow settings up across the waters this week as high pressure ridge holds south of the waters. Moisture increases with isolated to scattered showers and thunderstorms expected each day, most likely during the late night and morning hours.

Gulf coastal waters from Bonita Beach to the mouth of the Suwannee River out to 60 NM. Important notice to mariners.marine forecasts are issued at least four times a day. Boaters on extended trips should routinely monitor subsequent forecast issuances and updates for the latest marine weather information. The wave heights are forecast as significant wave height which is the average of the highest one-third of the waves. The highest waves may rarely be twice the significant wave height. The winds and seas near thunderstorms may be higher than forecast.

Tampa Bay waters

TODAY
West winds 10 to 15 knots with gusts up to 20 knots Bay and inland waters a moderate chop
TONIGHT
West winds 10 to 15 knots Bay and inland waters a moderate chop
WEDNESDAY
Northwest winds 10 to 15 knots Bay and inland waters a moderate chop Scattered showers and thunderstorms
WEDNESDAY NIGHT
Northwest winds 10 to 15 knots, diminishing to 5 to 10 knots after midnight Bay and inland waters a moderate chop Isolated thunderstorms Isolated showers in the evening, then scattered showers after midnight
THURSDAY
West winds 5 to 10 knots Bay and inland waters light chop Scattered showers and thunderstorms
THURSDAY NIGHT
West winds 5 to 10 knots Bay and inland waters light chop Scattered showers and thunderstorms, mainly in the evening
FRIDAY
Southwest winds 5 to 10 knots Bay and inland waters light chop Scattered showers and thunderstorms
FRIDAY NIGHT
Southwest winds 5 to 10 knots Bay and inland waters light chop Scattered showers and thunderstorms, mainly in the evening
SATURDAY
Southwest winds 5 to 10 knots Bay and inland waters light chop Scattered showers and thunderstorms
Reporting time 04:18 AM EDT Tue Aug 18 2026

Charlotte Harbor and Pine Island Sound

TODAY
Northwest winds 5 to 10 knots, becoming west 10 to 15 knots with gusts up to 20 knots this afternoon Bay and inland waters a moderate chop
TONIGHT
Northwest winds 10 to 15 knots Bay and inland waters a moderate chop
WEDNESDAY
Northwest winds 5 to 10 knots, becoming west 10 to 15 knots with gusts up to 20 knots in the afternoon Bay and inland waters a moderate chop Isolated showers and thunderstorms in the afternoon
WEDNESDAY NIGHT
Northwest winds 10 to 15 knots with gusts up to 20 knots, diminishing to 5 to 10 knots after midnight Bay and inland waters a moderate chop Isolated showers and thunderstorms
THURSDAY
Northwest winds 5 to 10 knots Bay and inland waters light chop Scattered showers Isolated thunderstorms in the morning, then scattered thunderstorms in the afternoon
THURSDAY NIGHT
West winds 5 to 10 knots, diminishing to around 5 knots after midnight Bay and inland waters light chop Isolated thunderstorms Scattered showers, mainly in the evening
FRIDAY
Southwest winds around 5 knots, becoming west in the afternoon Bay and inland waters light chop Isolated showers and thunderstorms
FRIDAY NIGHT
Southwest winds 5 to 10 knots Bay and inland waters light chop Isolated showers and thunderstorms
SATURDAY
Southwest winds 5 to 10 knots Bay and inland waters light chop Isolated showers and thunderstorms
Reporting time 04:18 AM EDT Tue Aug 18 2026

Coastal waters from Bonita Beach to Englewood FL out 20 NM

TODAY
Northwest winds 5 to 10 knots, increasing to 10 to 15 knots with gusts up to 20 knots this afternoon Seas 1 foot or less, then around 2 feet this afternoon Wave Detail: Northwest 1 foot at 3 seconds Bay and inland waters a moderate chop
TONIGHT
Northwest winds 10 to 15 knots Seas around 2 feet Wave Detail: Northwest 2 feet at 4 seconds Bay and inland waters a moderate chop
WEDNESDAY
Northwest winds 10 to 15 knots Seas around 2 feet Wave Detail: Northwest 2 feet at 4 seconds Bay and inland waters a moderate chop
WEDNESDAY NIGHT
Northwest winds 10 to 15 knots with gusts up to 20 knots, diminishing to 5 to 10 knots after midnight Seas around 2 feet Wave Detail: Northwest 2 feet at 4 seconds Bay and inland waters a moderate chop Scattered showers and thunderstorms
THURSDAY
Northwest winds 5 to 10 knots Seas around 2 feet Wave Detail: Northwest 1 foot at 5 seconds Bay and inland waters light chop Scattered showers and thunderstorms
THURSDAY NIGHT
West winds 5 to 10 knots Seas around 2 feet in the evening, then 1 foot or less Wave Detail: Northwest 1 foot at 5 seconds Bay and inland waters light chop Isolated thunderstorms Isolated showers in the evening, then scattered showers after midnight
FRIDAY
Southwest winds 5 to 10 knots Seas 1 foot or less Bay and inland waters light chop Isolated thunderstorms Scattered showers, mainly in the morning
FRIDAY NIGHT
Southwest winds 5 to 10 knots Seas 1 foot or less Bay and inland waters light chop Isolated showers and thunderstorms after midnight
SATURDAY
Southwest winds 5 to 10 knots Seas 1 foot or less Bay and inland waters light chop Isolated showers and thunderstorms
Reporting time 04:18 AM EDT Tue Aug 18 2026

Waters from Bonita Beach to Englewood FL out 20 to 60 NM

TODAY
Northwest winds 5 to 10 knots Seas 1 foot or less Wave Detail: Northwest 1 foot at 3 seconds
TONIGHT
Northwest winds around 10 knots Seas around 2 feet Wave Detail: Northwest 2 feet at 4 seconds
WEDNESDAY
Northwest winds around 10 knots Seas around 2 feet Wave Detail: Northwest 2 feet at 4 seconds
WEDNESDAY NIGHT
Northwest winds 5 to 10 knots Seas around 2 feet Wave Detail: Northwest 2 feet at 5 seconds Isolated showers and thunderstorms in the evening, then scattered showers and thunderstorms after midnight
THURSDAY
Northwest winds 5 to 10 knots Seas around 2 feet Wave Detail: Northwest 2 feet at 5 seconds Scattered showers and thunderstorms
THURSDAY NIGHT
West winds 5 to 10 knots Seas around 2 feet in the evening, then 1 foot or less Wave Detail: Northwest 1 foot at 5 seconds Isolated showers and thunderstorms after midnight
FRIDAY
Southwest winds around 5 knots Seas 1 foot or less Isolated showers and thunderstorms
FRIDAY NIGHT
Southwest winds around 5 knots Seas 1 foot or less Isolated showers and thunderstorms after midnight
SATURDAY
Southwest winds around 5 knots Seas 1 foot or less Isolated showers and thunderstorms
Reporting time 04:18 AM EDT Tue Aug 18 2026

Coastal waters from Englewood to Tarpon Springs FL out 20 NM

TODAY
West winds 10 to 15 knots Seas around 2 feet Wave Detail: Northwest 2 feet at 4 seconds Bay and inland waters a moderate chop
TONIGHT
West winds 10 to 15 knots Seas around 2 feet Wave Detail: Northwest 2 feet at 4 seconds Bay and inland waters a moderate chop Isolated showers and thunderstorms after midnight
WEDNESDAY
Northwest winds 10 to 15 knots Seas around 2 feet Wave Detail: Northwest 2 feet at 4 seconds Bay and inland waters a moderate chop Scattered showers and thunderstorms, mainly in the morning
WEDNESDAY NIGHT
Northwest winds 10 to 15 knots, diminishing to 5 to 10 knots after midnight Seas around 2 feet Wave Detail: Northwest 2 feet at 5 seconds Bay and inland waters a moderate chop Isolated showers and thunderstorms in the evening, then scattered showers and thunderstorms after midnight
THURSDAY
Northwest winds 5 to 10 knots Seas around 2 feet Wave Detail: Northwest 2 feet at 5 seconds Bay and inland waters light chop Scattered showers and thunderstorms
THURSDAY NIGHT
West winds 5 to 10 knots Seas around 2 feet in the evening, then 1 foot or less Wave Detail: West 1 foot at 5 seconds Bay and inland waters light chop Isolated showers and thunderstorms in the evening, then scattered showers and thunderstorms after midnight
FRIDAY
Southwest winds 5 to 10 knots Seas 1 foot or less Bay and inland waters light chop Scattered showers and thunderstorms
FRIDAY NIGHT
Southwest winds 5 to 10 knots Seas 1 foot or less Bay and inland waters light chop Isolated showers and thunderstorms in the evening, then scattered showers and thunderstorms after midnight
SATURDAY
Southwest winds 5 to 10 knots Seas 1 foot or less, then around 2 feet in the afternoon Bay and inland waters light chop Scattered showers and thunderstorms
Reporting time 04:18 AM EDT Tue Aug 18 2026

Waters from Englewood to Tarpon Springs FL out 20 to 60 NM

TODAY
West winds 10 to 15 knots Seas around 2 feet Wave Detail: Northwest 2 feet at 4 seconds
TONIGHT
West winds 10 to 15 knots Seas around 2 feet Wave Detail: Northwest 2 feet at 4 seconds Isolated showers and thunderstorms after midnight
WEDNESDAY
Northwest winds 10 to 15 knots Seas around 2 feet Wave Detail: Northwest 2 feet at 5 seconds Scattered thunderstorms Scattered showers, mainly in the morning
WEDNESDAY NIGHT
Northwest winds around 10 knots Seas around 2 feet Wave Detail: Northwest 2 feet at 5 seconds Isolated showers and thunderstorms in the evening, then scattered showers and thunderstorms after midnight
THURSDAY
Northwest winds 5 to 10 knots Seas around 2 feet Wave Detail: Northwest 2 feet at 5 seconds Scattered showers and thunderstorms
THURSDAY NIGHT
West winds 5 to 10 knots Seas around 2 feet in the evening, then 1 foot or less Wave Detail: Northwest 1 foot at 5 seconds Isolated showers and thunderstorms in the evening, then scattered showers and thunderstorms after midnight
FRIDAY
West winds 5 to 10 knots Seas 1 foot or less Scattered showers and thunderstorms
FRIDAY NIGHT
Southwest winds 5 to 10 knots Seas 1 foot or less Isolated showers and thunderstorms after midnight
SATURDAY
Southwest winds 5 to 10 knots Seas 1 foot or less, then around 2 feet in the afternoon Scattered showers and thunderstorms
Reporting time 04:18 AM EDT Tue Aug 18 2026

Coastal waters from Tarpon Springs to Suwannee River FL out 20 NM

TODAY
West winds 10 to 15 knots Seas around 2 feet Wave Detail: West 2 feet at 4 seconds Bay and inland waters a moderate chop Isolated thunderstorms
TONIGHT
West winds 10 to 15 knots Seas around 2 feet Wave Detail: West 2 feet at 4 seconds Bay and inland waters a moderate chop Isolated showers and thunderstorms in the evening, then scattered showers and thunderstorms after midnight
WEDNESDAY
West winds 10 to 15 knots Seas around 2 feet Wave Detail: West 2 feet at 4 seconds Bay and inland waters a moderate chop Scattered showers and thunderstorms
WEDNESDAY NIGHT
West winds 5 to 10 knots Seas around 2 feet Wave Detail: West 2 feet at 4 seconds Bay and inland waters light chop Isolated showers and thunderstorms in the evening, then scattered showers and thunderstorms after midnight
THURSDAY
West winds 5 to 10 knots Seas 1 to 2 feet Wave Detail: West 2 feet at 5 seconds Bay and inland waters light chop Numerous showers and scattered thunderstorms
THURSDAY NIGHT
West winds around 5 knots Seas 1 foot or less Wave Detail: West 1 foot at 5 seconds Bay and inland waters smooth Scattered showers and thunderstorms
FRIDAY
Southwest winds 5 to 10 knots Seas 1 foot or less Bay and inland waters light chop Scattered showers and thunderstorms
FRIDAY NIGHT
Southwest winds 5 to 10 knots Seas 1 foot or less Bay and inland waters light chop Scattered showers and thunderstorms
SATURDAY
Southwest winds 5 to 10 knots Seas 1 foot or less, then around 2 feet in the afternoon Bay and inland waters light chop Scattered thunderstorms Numerous showers, mainly in the morning
Reporting time 04:18 AM EDT Tue Aug 18 2026

Waters from Tarpon Springs to Suwannee River FL out 20 to 60 NM

TODAY
West winds 10 to 15 knots Seas around 2 feet Wave Detail: West 2 feet at 4 seconds Isolated showers and thunderstorms
TONIGHT
West winds 10 to 15 knots Seas around 2 feet Wave Detail: West 2 feet at 4 seconds Scattered showers and thunderstorms after midnight
WEDNESDAY
West winds 10 to 15 knots Seas around 2 feet Wave Detail: West 2 feet at 5 seconds Scattered thunderstorms Scattered showers in the morning, then numerous showers in the afternoon
WEDNESDAY NIGHT
West winds around 10 knots Seas around 2 feet Wave Detail: West 2 feet at 5 seconds Scattered showers and thunderstorms after midnight
THURSDAY
West winds 5 to 10 knots Seas around 2 feet Wave Detail: West 2 feet at 5 seconds Numerous showers and scattered thunderstorms
THURSDAY NIGHT
West winds 5 to 10 knots Seas around 2 feet in the evening, then 1 foot or less Wave Detail: West 1 foot at 5 seconds, becoming west 1 foot at 4 seconds Isolated showers and thunderstorms in the evening, then scattered showers and thunderstorms after midnight
FRIDAY
West winds 5 to 10 knots Seas 1 foot or less Scattered showers and thunderstorms
FRIDAY NIGHT
Southwest winds 5 to 10 knots Seas 1 foot or less, then around 2 feet after midnight Isolated showers and thunderstorms in the evening, then scattered showers and thunderstorms after midnight
SATURDAY
Southwest winds around 10 knots Seas around 2 feet Scattered showers and thunderstorms
Reporting time 04:18 AM EDT Tue Aug 18 2026
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