Marine Weather Net

Sayville, NY Weather Forecast


Marine Forecast: South Shore Bays


Sayville, New York

 Lat: 40.75N, Lon: 73.09W

Current Conditions Updated: 656 PM EDT TUE AUG 4 2026

Mostly Clear
Temp: 78°F
  • Humidity:
  • 49%
  • Winds:
  • 6 MPH S
  • Gusts:
  • N/A MPH
  • Barometer:
  • 30.11 in.
  • Dewpoint:
  • 58°F
  • Heat index:
  • 79°F

  • Sunrise:
  • 5:50 AM EDT
  • Sunset:
  • 8:03 PM EDT
  • Moonrise:
  • 10:47 PM EDT
  • Moonset:
  • 12:08 PM EDT

TONIGHT

MOSTLY CLOUDY
Lo: 65°F

WEDNESDAY

PARTLY SUNNY
Hi: 81°F
Lo: 75°F

THURSDAY

PARTLY SUNNY
Hi: 85°F
Lo: 75°F
Precip: 20%

FRIDAY

SUNNY

Hi: 85°F
Lo: 71°F
Weather Forecast In Detail:
Forecast Issued: 411 PM EDT Tue Aug 04 2026

HIGH RIP CURRENT RISK IN EFFECT UNTIL 8 PM EDT THIS EVENING
Tonight...Mostly cloudy. Lows in the mid 60s. Southeast winds around 5 mph this evening, becoming light and variable.
Wednesday...Partly sunny. Humid with highs in the lower 80s. East winds around 5 mph, becoming south in the afternoon.
Wednesday Night...Mostly cloudy. A slight chance of showers and thunderstorms in the evening, then a slight chance of showers after midnight. Humid with lows in the lower 70s. South winds 5 to 10 mph. Chance of rain 20 percent.
Thursday...Partly sunny with a slight chance of showers in the morning, then sunny in the afternoon. Humid with highs in the mid 80s. Southwest winds 10 to 15 mph. Gusts up to 25 mph in the afternoon. Chance of rain 20 percent. Heat index values in the upper 90s.
Thursday Night...Partly cloudy. A chance of showers with a slight chance of thunderstorms in the evening, then a chance of showers after midnight. Humid with lows in the lower 70s. Southwest winds 10 to 15 mph with gusts up to 25 mph. Chance of rain 40 percent.
Friday...Sunny. Highs in the mid 80s. Heat index values up to 100.
Friday Night...Mostly cloudy in the evening, then becoming partly cloudy. A chance of showers. Lows in the lower 70s. Chance of rain 40 percent.
Saturday...Mostly sunny. Highs in the mid 80s. Heat index values in the mid 90s.
Saturday Night...Partly cloudy. Lows in the lower 70s.
Sunday...Mostly sunny. Highs in the mid 80s. Heat index values in the mid 90s.
Sunday Night...Mostly clear in the evening, then becoming partly cloudy. Lows in the lower 70s.
Monday...Sunny. Highs in the mid 80s.
Monday Night...Partly cloudy. Lows in the lower 70s.
Tuesday...Partly sunny. A chance of showers in the afternoon. Highs in the upper 80s. Chance of rain 40 percent.
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