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 FRI JUL 18 2025

Partly Cloudy
Temp: 80°F
  • Humidity:
  • 40%
  • Winds:
  • 8 MPH NNW
  • Gusts:
  • N/A MPH
  • Barometer:
  • 30.06 in.
  • Dewpoint:
  • 54°F
  • Heat index:
  • 80°F

  • Sunrise:
  • 5:34 AM EDT
  • Sunset:
  • 8:19 PM EDT
  • Moonrise:
  • N/A EDT
  • Moonset:
  • 2:15 PM EDT

THIS AFTERNOON

PARTLY SUNNY
Hi: 81°F
Lo: 65°F

SATURDAY

MOSTLY SUNNY
Hi: 81°F
Lo: 75°F

SUNDAY

PARTLY SUNNY
Hi: 85°F
Lo: 70°F
Precip: 50%

MONDAY

SUNNY

Hi: 85°F
Lo: 65°F
Weather Forecast In Detail:
Forecast Issued: 142 PM EDT Fri Jul 18 2025

This Afternoon...Partly sunny. Highs in the lower 80s. Northwest winds 5 to 10 mph with gusts up to 20 mph.
Tonight...Partly cloudy in the evening, then clearing. Lows in the mid 60s. Northwest winds around 5 mph.
Saturday...Mostly sunny. Highs in the lower 80s. East winds around 5 mph, becoming south in the afternoon.
Saturday Night...Mostly cloudy with a chance of showers and thunderstorms. Humid with lows in the lower 70s. South winds 5 to 10 mph. Chance of rain 50 percent.
Sunday...Partly sunny with a chance of showers and thunderstorms. Humid with highs in the mid 80s. Southwest winds 5 to 10 mph. Gusts up to 20 mph in the afternoon. Chance of rain 50 percent. Heat index values in the mid 90s.
Sunday Night...Partly cloudy with a chance of showers and thunderstorms in the evening, then mostly clear after midnight. Lows around 70. Chance of rain 50 percent.
Monday...Sunny. Highs in the mid 80s.
Monday Night...Mostly clear in the evening, then becoming partly cloudy. Lows in the mid 60s.
Tuesday...Sunny. Highs in the lower 80s.
Tuesday Night...Mostly clear in the evening, then becoming partly cloudy. Lows in the upper 60s.
Wednesday...Mostly sunny. Highs in the mid 80s.
Wednesday Night...Partly cloudy. Lows in the lower 70s.
Thursday...Partly sunny. Highs in the mid 80s. Heat index values in the upper 90s.
Thursday Night...Mostly cloudy with a chance of showers. Lows in the mid 70s. Chance of rain 30 percent.
Friday...Mostly sunny. Highs in the upper 80s. Heat index values up to 100.
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