Water Temperature of Great South Bay in West Sayville, NY

Current Water Temperature

35.8°F

Measurement Time: Thursday, February 13, 2025, 6:54 PM EST

Temperature Locations

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Local Points of Interest

Green Creek; Sayville Beach & Marina

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Great South Bay

Station Name: GREAT SOUTH BAY AT WEST SAYVILLE NY
Data Source: Water Data - usgc.gov

Elevation Above Sea Level: 0 feet / 0 meters

Nearest Address:
198 Atlantic Ave
West Sayville, NY 11796
Suffolk County

GPS Coordinates: 40.72105556, -73.09125

Nearby Water Temperatures

Flax Pond, Old Field, NY (16.9 mi)
Reynolds Channel, Point Lookout, NY (27.3 mi)
Peconic River, Riverhead, NY (27.3 mi)
Frost Creek, Lattingtown, NY (29.2 mi)
Hempstead Lake, Lakeview, NY (29.2 mi)
Mill River, Fairfield, CT (29.7 mi)
Norwalk Harbor, Norwalk, CT (29.8 mi)
Saugatuck River, Westport, CT (30.1 mi)
Mill River, Southport, CT (30.1 mi)
Hog Island Channel, Island Park, NY (30.6 mi)
Norwalk River, Norwalk, CT (31.3 mi)
Saugatuck River, Westport Village, CT (31.4 mi)
Bridgeport Harbor, Bridgeport, CT (31.6 mi)
Norwalk River, Norwalk, CT (31.7 mi)
Housatonic River, Stratford, CT (32.3 mi)

Weather for West Sayville, New York

Current Weather

54°F
Mist
Conditions: Mist
Humidity: 97%
Feels Like: 49.7°F
Wind: WNW 15 mph
Wind Gusts: 20.6 mph
Pressure: 29.82 in
Precipitation: 0 in
Cloud Cover: 100%
Visibility: 6 mi
UV Index: 0

Five Day Weather Forecast

Sunny
Sat
H: 72°F
L: 51°F
Sunny
Sun
H: 72°F
L: 58°F
Sunny
Mon
H: 62°F
L: 54°F
Patchy rain nearby
Tue
H: 66°F
L: 56°F
Patchy rain nearby
Wed
H: 63°F
L: 59°F

Air Quality

PM2.5: 1.85 μg/m3
PM10: 1.85 μg/m3
Carbon Monoxide: 310.8 μg/m3
Nitrogen Dioxide: 17.95 μg/m3
Sulphur Dioxide: 4.26 μg/m3
Ozone: 49 μg/m3

Astronomical

Sunrise: 5:40 AM
Sun Transit: 12:48 AM
Sunset: 7:58 PM
Daylight: 14 hrs 18 mins
Moonrise: 6:21 PM
Moon Transit: 11:37 PM
Moonset: 4:24 AM
Moon Phase: Waxing Gibbous
Moon Illumination: 97.1%

Best Times for Fishing or Hunting

Major Periods

1:05 PM - 3:35 PM
12:00 AM - 12:00 AM

Minor Periods

5:51 PM - 7:21 PM
3:54 AM - 5:24 AM

Action Rating: 3 out of 5

Flood Warning issued May 9 at 1:28PM EDT until May 11 at 9:30PM EDT by NWS Albany NY

Effective: Fri May 9, 2025, 1:28 PM
Expires: Sat May 10, 2025, 1:30 AM

* WHAT...Minor flooding is forecast. * WHERE...Housatonic River at Stevenson Dam. * WHEN...From this evening to late Sunday evening. * IMPACTS...At 11.0 feet, Flood stage. * ADDITIONAL DETAILS... - At 12:30 PM EDT Friday the stage was 9.2 feet. - Forecast...The river will rise above flood stage this evening to 11.2 feet just after midnight tonight. It will hold steady through Sunday morning before falling below flood stage Sunday afternoon. - Flood stage is 11.0 feet. - http://www.weather.gov/safety/flood


Flood Warning issued May 9 at 1:28PM EDT until May 11 at 9:30PM EDT by NWS Albany NY

Effective: Fri May 9, 2025, 1:28 PM
Expires: Sat May 10, 2025, 1:30 AM

* WHAT...Minor flooding is forecast. * WHERE...Housatonic River at Stevenson Dam. * WHEN...From this evening to late Sunday evening. * IMPACTS...At 11.0 feet, Flood stage. * ADDITIONAL DETAILS... - At 12:30 PM EDT Friday the stage was 9.2 feet. - Forecast...The river will rise above flood stage this evening to 11.2 feet just after midnight tonight. It will hold steady through Sunday morning before falling below flood stage Sunday afternoon. - Flood stage is 11.0 feet. - http://www.weather.gov/safety/flood


Flood Warning issued May 9 at 1:28PM EDT until May 11 at 9:30PM EDT by NWS Albany NY

Effective: Fri May 9, 2025, 1:28 PM
Expires: Sat May 10, 2025, 1:30 AM

* WHAT...Minor flooding is forecast. * WHERE...Housatonic River at Stevenson Dam. * WHEN...From this evening to late Sunday evening. * IMPACTS...At 11.0 feet, Flood stage. * ADDITIONAL DETAILS... - At 12:30 PM EDT Friday the stage was 9.2 feet. - Forecast...The river will rise above flood stage this evening to 11.2 feet just after midnight tonight. It will hold steady through Sunday morning before falling below flood stage Sunday afternoon. - Flood stage is 11.0 feet. - http://www.weather.gov/safety/flood


Flood Warning issued May 9 at 1:28PM EDT until May 11 at 9:30PM EDT by NWS Albany NY

Effective: Fri May 9, 2025, 1:28 PM
Expires: Sat May 10, 2025, 1:30 AM

* WHAT...Minor flooding is forecast. * WHERE...Housatonic River at Stevenson Dam. * WHEN...From this evening to late Sunday evening. * IMPACTS...At 11.0 feet, Flood stage. * ADDITIONAL DETAILS... - At 12:30 PM EDT Friday the stage was 9.2 feet. - Forecast...The river will rise above flood stage this evening to 11.2 feet just after midnight tonight. It will hold steady through Sunday morning before falling below flood stage Sunday afternoon. - Flood stage is 11.0 feet. - http://www.weather.gov/safety/flood


Flood Warning issued May 9 at 12:27PM EDT by NWS Boston/Norton MA

Effective: Fri May 9, 2025, 12:27 PM
Expires: Sat May 10, 2025, 12:30 AM

...The Flood Warning continues for the following rivers in Connecticut... Connecticut River At Middle Haddam affecting Middlesex County. Connecticut River At Hartford affecting Middlesex and Hartford Counties. For the Connecticut River...including Montague, Northampton, Holyoke Dam, Holyoke, Springfield, Thompsonville, Hartford, Middle Haddam... Minor flooding is forecast. * WHAT...Minor flooding is forecast. * WHERE...Connecticut River at Middle Haddam. * WHEN...Until further notice. * IMPACTS...At 7.0 feet, Flooding is likely in the vicinity of Meadow Road, Route 17A, in the Gildersleeve section of Portland. A portion of this roadway will likely be closed. This includes the Exchange Club of Portland Fairgrounds. Boating interests should prepare for a period of swift river flows during this period. * ADDITIONAL DETAILS... - At 11:55 AM EDT Friday the stage was 6.8 feet. - Bankfull stage is 7.0 feet. - Forecast...The river will fall to 6.4 feet late this evening. It will then rise to 6.6 feet late tonight. It will fall to 6.1 feet late tomorrow evening then rise again. - Flood stage is 7.0 feet. - http://www.weather.gov/safety/flood

Caution is urged when walking near riverbanks. Turn around, don't drown when encountering flooded roads. Most flood deaths occur in vehicles. Additional information is available at www.weather.gov. The next statement will be issued late tonight at 1230 AM EDT.


Saturday, May 10, 2025

Weather Forecast

Conditions: Sunny
Average Temperature: 60.7°F
Average Humidity: 66%
Chance of Rain: 0%
Wind: 20.8 mph
UV Index: 1.9

Air Quality

AQI: 1 - Good
PM2.5: 9.18 μg/m3
PM10: 9.45 μg/m3
Carbon Monoxide: 344.4 μg/m3
Nitrogen Dioxide: 37.12 μg/m3
Sulphur Dioxide: 5.28 μg/m3
Ozone: 55.24 μg/m3

Astronomical

Sunrise: 5:40 AM
Sun Transit: 12:48 AM
Sunset: 7:58 PM
Daylight: 14 hrs 18 mins
Moonrise: 6:21 PM
Moon Transit: 11:37 PM
Moonset: 4:24 AM
Moon Phase: Waxing Gibbous
Moon Illumination: 97.1%

Best Times for Fishing or Hunting

Major Periods

1:05 PM - 3:35 PM
12:00 AM - 12:00 AM

Minor Periods

5:51 PM - 7:21 PM
3:54 AM - 5:24 AM

Action Rating: 3 out of 5

Sunday, May 11, 2025

Weather Forecast

Conditions: Sunny
Average Temperature: 64.3°F
Average Humidity: 54%
Chance of Rain: 0%
Wind: 9.2 mph
UV Index: 2.2

Air Quality

AQI: 2 - Moderate
PM2.5: 15.78 μg/m3
PM10: 16.68 μg/m3
Carbon Monoxide: 351.65 μg/m3
Nitrogen Dioxide: 42.19 μg/m3
Sulphur Dioxide: 6.16 μg/m3
Ozone: 66.56 μg/m3

Astronomical

Sunrise: 5:39 AM
Sun Transit: 12:48 AM
Sunset: 7:59 PM
Daylight: 14 hrs 20 mins
Moonrise: 7:23 PM
Moon Transit: 12:00 AM
Moonset: 4:46 AM
Moon Phase: Full
Moon Illumination: 99.7%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
1:47 PM - 4:17 PM

Minor Periods

6:53 PM - 8:23 PM
4:16 AM - 5:46 AM

Action Rating: 5 out of 5

Monday, May 12, 2025

Weather Forecast

Conditions: Sunny
Average Temperature: 58°F
Average Humidity: 61%
Chance of Rain: 0%
Wind: 9.2 mph
UV Index: 2.2

Air Quality

AQI: 2 - Moderate
PM2.5: 25.03 μg/m3
PM10: 28.22 μg/m3
Carbon Monoxide: 456.06 μg/m3
Nitrogen Dioxide: 60.57 μg/m3
Sulphur Dioxide: 6.87 μg/m3
Ozone: 52.24 μg/m3

Astronomical

Sunrise: 5:38 AM
Sun Transit: 12:48 AM
Sunset: 8:00 PM
Daylight: 14 hrs 22 mins
Moonrise: 8:27 PM
Moon Transit: 12:20 AM
Moonset: 5:11 AM
Moon Phase: Full
Moon Illumination: 99.7%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
2:33 PM - 5:03 PM

Minor Periods

7:57 PM - 9:27 PM
4:41 AM - 6:11 AM

Action Rating: 4 out of 5

Tuesday, May 13, 2025

Weather Forecast

Conditions: Patchy rain nearby
Average Temperature: 60.5°F
Average Humidity: 79%
Chance of Rain: 89%
Wind: 10.5 mph
UV Index: 1.3

Air Quality

AQI: 2 - Moderate
PM2.5: 23.3 μg/m3
PM10: 29.07 μg/m3
Carbon Monoxide: 364.17 μg/m3
Nitrogen Dioxide: 53.61 μg/m3
Sulphur Dioxide: 8.27 μg/m3
Ozone: 67.15 μg/m3

Astronomical

Sunrise: 5:37 AM
Sun Transit: 12:48 AM
Sunset: 8:01 PM
Daylight: 14 hrs 24 mins
Moonrise: 9:30 PM
Moon Transit: 1:07 AM
Moonset: 5:42 AM
Moon Phase: Full
Moon Illumination: 97.2%

Best Times for Fishing or Hunting

Major Periods

12:37 AM - 3:07 AM
3:21 PM - 5:51 PM

Minor Periods

9:00 PM - 10:30 PM
5:12 AM - 6:42 AM

Action Rating: 4 out of 5

Wednesday, May 14, 2025

Weather Forecast

Conditions: Patchy rain nearby
Average Temperature: 59.7°F
Average Humidity: 95%
Chance of Rain: 88%
Wind: 14.1 mph
UV Index: 0

Air Quality

AQI: 0 -
PM2.5: 0 μg/m3
PM10: 0 μg/m3
Carbon Monoxide: 0 μg/m3
Nitrogen Dioxide: 0 μg/m3
Sulphur Dioxide: 0 μg/m3
Ozone: 0 μg/m3

Astronomical

Sunrise: 5:36 AM
Sun Transit: 12:48 AM
Sunset: 8:02 PM
Daylight: 14 hrs 26 mins
Moonrise: 10:31 PM
Moon Transit: 1:56 AM
Moonset: 6:20 AM
Moon Phase: Full
Moon Illumination: 92.3%

Best Times for Fishing or Hunting

Major Periods

1:26 AM - 3:56 AM
4:12 PM - 6:42 PM

Minor Periods

10:01 PM - 11:31 PM
5:50 AM - 7:20 AM

Action Rating: 4 out of 5

The times presented here are based upon the solunar theory, which is the idea that the movements of fish and other animals are affected by the location of the sun and moon. The major periods are believed to be the times of the greatest animal activity and occur when the moon is directly overhead or underfoot (lunar transits). The minor periods also see increased activity and occur when the moon is rising or setting. The strongest activity occurs during full or new moons, and the weakest during quarter or three quarter moons. This is indicated by the Action Rating.

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