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

Great South Bay

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

Elevation Above Sea Level: 0 feet

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

25°F
Overcast
Overcast
16.1°F
19.5°F
62%
W 8.3 mph
17.2 mph
12.6°F
11.2°F
0 in
100%
9 mi
1021 mbar
0

Five Day Weather Forecast

Sunny
Wed
H: 33°F
L: 19°F
Partly Cloudy
Thu
H: 28°F
L: 19°F
Moderate snow
Fri
H: 28°F
L: 15°F
Moderate or heavy snow showers
Sat
H: 14°F
L: 7°F
Sunny
Sun
H: 14°F
L: 4°F

Air Quality

AQI: 1 - Good
PM2.5: 13.25 μg/m3
PM10: 13.35 μg/m3
Carbon Monoxide: 300.85 μg/m3
Nitrogen Dioxide: 26.65 μg/m3
Sulphur Dioxide: 4.75 μg/m3
Ozone: 45 μg/m3

Astronomical

Sunrise: 6:59 AM
Sun Transit: 12:06 AM
Sunset: 5:14 PM
Daylight: 10 hrs 14 mins
Moonrise: 8:33 PM
Moon Transit: 2:00 AM
Moonset: 8:23 AM
Moon Phase: Full
Moon Illumination: 90.9%

Best Times for Fishing or Hunting

Major Periods

1:30 AM - 4:00 AM
4:11 PM - 6:41 PM

Minor Periods

8:03 PM - 9:33 PM
7:53 AM - 9:23 AM

Action Rating: 3 out of 5

Special Weather Statement issued February 3 at 5:33PM EST by NWS Upton NY

Effective: Tue February 3, 2026, 5:33 PM
Expires: Wed February 4, 2026, 7:00 AM

Patchy black ice is possible through tonight. Water on sidewalks and roads has been observed in some areas from afternoon snowmelt. This could cause slick conditions on untreated surfaces as water refreezes this evening. Use caution.


Wednesday, February 4, 2026

Weather Forecast

Sunny
33.3°F
18.5°F
25.3°F
69%
0 in
0%
0%
9.4 mph
0.4


Air Quality

AQI: 1 - Good
PM2.5: 14.97 μg/m3
PM10: 15.14 μg/m3
Carbon Monoxide: 325.89 μg/m3
Nitrogen Dioxide: 36.77 μg/m3
Sulphur Dioxide: 5.49 μg/m3
Ozone: 41.72 μg/m3

Astronomical

Sunrise: 6:59 AM
Sun Transit: 12:06 AM
Sunset: 5:14 PM
Daylight: 10 hrs 14 mins
Moonrise: 8:33 PM
Moon Transit: 2:00 AM
Moonset: 8:23 AM
Moon Phase: Full
Moon Illumination: 90.9%

Best Times for Fishing or Hunting

Major Periods

1:30 AM - 4:00 AM
4:11 PM - 6:41 PM

Minor Periods

8:03 PM - 9:33 PM
7:53 AM - 9:23 AM

Action Rating: 3 out of 5

Thursday, February 5, 2026

Weather Forecast

Partly Cloudy
28.4°F
18.8°F
23.8°F
77%
0 in
0%
0%
12.8 mph
0.4


Air Quality

AQI: 1 - Good
PM2.5: 10.69 μg/m3
PM10: 10.82 μg/m3
Carbon Monoxide: 301.73 μg/m3
Nitrogen Dioxide: 27.25 μg/m3
Sulphur Dioxide: 3.58 μg/m3
Ozone: 50.12 μg/m3

Astronomical

Sunrise: 6:58 AM
Sun Transit: 12:06 AM
Sunset: 5:15 PM
Daylight: 10 hrs 17 mins
Moonrise: 9:38 PM
Moon Transit: 2:44 AM
Moonset: 8:44 AM
Moon Phase: Waning Gibbous
Moon Illumination: 83.4%

Best Times for Fishing or Hunting

Major Periods

2:14 AM - 4:44 AM
4:54 PM - 7:24 PM

Minor Periods

9:08 PM - 10:38 PM
8:14 AM - 9:44 AM

Action Rating: 3 out of 5

Friday, February 6, 2026

Weather Forecast

Moderate snow
27.7°F
15.1°F
22.8°F
78%
0.06 in
65%
6%
12.8 mph
0.4


Air Quality

AQI: 1 - Good
PM2.5: 13.41 μg/m3
PM10: 13.9 μg/m3
Carbon Monoxide: 342.61 μg/m3
Nitrogen Dioxide: 28.79 μg/m3
Sulphur Dioxide: 3.32 μg/m3
Ozone: 53.2 μg/m3

Astronomical

Sunrise: 6:57 AM
Sun Transit: 12:06 AM
Sunset: 5:16 PM
Daylight: 10 hrs 19 mins
Moonrise: 10:42 PM
Moon Transit: 3:26 AM
Moonset: 9:05 AM
Moon Phase: Waning Gibbous
Moon Illumination: 74.1%

Best Times for Fishing or Hunting

Major Periods

2:56 AM - 5:26 AM
5:36 PM - 8:06 PM

Minor Periods

10:12 PM - 11:42 PM
8:35 AM - 10:05 AM

Action Rating: 3 out of 5

Saturday, February 7, 2026

Weather Forecast

Moderate or heavy snow showers
13.5°F
6.6°F
13.7°F
80%
0.08 in
89%
15%
27.1 mph
0.4


Air Quality

AQI: 1 - Good
PM2.5: 15.49 μg/m3
PM10: 15.83 μg/m3
Carbon Monoxide: 336.59 μg/m3
Nitrogen Dioxide: 40.7 μg/m3
Sulphur Dioxide: 6.24 μg/m3
Ozone: 36.64 μg/m3

Astronomical

Sunrise: 6:56 AM
Sun Transit: 12:06 AM
Sunset: 5:17 PM
Daylight: 10 hrs 21 mins
Moonrise: 11:46 PM
Moon Transit: 4:08 AM
Moonset: 9:26 AM
Moon Phase: Waning Gibbous
Moon Illumination: 63.7%

Best Times for Fishing or Hunting

Major Periods

3:38 AM - 6:08 AM
6:19 PM - 8:49 PM

Minor Periods

12:00 AM - 12:00 AM
8:56 AM - 10:26 AM

Action Rating: 2 out of 5

Sunday, February 8, 2026

Weather Forecast

Sunny
14.2°F
4°F
8.5°F
76%
0 in
0%
5%
22.1 mph
0


Air Quality

AQI: 1 - Good
PM2.5: 2.56 μg/m3
PM10: 2.66 μg/m3
Carbon Monoxide: 178.54 μg/m3
Nitrogen Dioxide: 6.38 μg/m3
Sulphur Dioxide: 1.75 μg/m3
Ozone: 68.31 μg/m3

Astronomical

Sunrise: 6:55 AM
Sun Transit: 12:06 AM
Sunset: 5:19 PM
Daylight: 10 hrs 24 mins
Moonrise: 12:46 AM
Moon Transit: 4:52 AM
Moonset: 9:51 AM
Moon Phase: Last Quarter
Moon Illumination: 52.5%

Best Times for Fishing or Hunting

Major Periods

4:22 AM - 6:52 AM
7:04 PM - 9:34 PM

Minor Periods

9:21 AM - 10:51 AM
12:00 AM - 12:00 AM

Action Rating: 3 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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