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

15.1°F
Clear
Clear
2.7°F
14.2°F
48%
W 10.1 mph
13.9 mph
6.2°F
-3.5°F
0 in
0%
9 mi
1033 mbar
0

Five Day Weather Forecast

Partly Cloudy
Wed
H: 34°F
L: 10°F
Partly Cloudy
Thu
H: 43°F
L: 34°F
Partly Cloudy
Fri
H: 30°F
L: 21°F
Partly Cloudy
Sat
H: 17°F
L: 11°F
Moderate or heavy snow showers
Sun
H: 18°F
L: 15°F

Air Quality

PM2.5: 12.45 μg/m3
PM10: 12.95 μg/m3
Carbon Monoxide: 245.85 μg/m3
Nitrogen Dioxide: 31.05 μg/m3
Sulphur Dioxide: 10.15 μg/m3
Ozone: 37 μg/m3

Astronomical

Sunrise: 7:11 AM
Sun Transit: 12:03 AM
Sunset: 4:57 PM
Daylight: 9 hrs 46 mins
Moonrise: 8:50 AM
Moon Transit: 2:22 PM
Moonset: 8:05 PM
Moon Phase: Waxing Crescent
Moon Illumination: 8.1%

Best Times for Fishing or Hunting

Major Periods

3:49 AM - 6:19 AM
1:52 PM - 4:22 PM

Minor Periods

7:35 PM - 9:05 PM
8:20 AM - 9:50 AM

Action Rating: 2 out of 5

Wednesday, January 21, 2026

Weather Forecast

Partly Cloudy
33.6°F
9.9°F
23.5°F
60%
0 in
0%
0%
19.5 mph
0.3


Air Quality

AQI: 1 - Good
PM2.5: 9.93 μg/m3
PM10: 10.92 μg/m3
Carbon Monoxide: 229.49 μg/m3
Nitrogen Dioxide: 21.07 μg/m3
Sulphur Dioxide: 7.89 μg/m3
Ozone: 54.36 μg/m3

Astronomical

Sunrise: 7:11 AM
Sun Transit: 12:03 AM
Sunset: 4:57 PM
Daylight: 9 hrs 46 mins
Moonrise: 8:50 AM
Moon Transit: 2:22 PM
Moonset: 8:05 PM
Moon Phase: Waxing Crescent
Moon Illumination: 8.1%

Best Times for Fishing or Hunting

Major Periods

3:49 AM - 6:19 AM
1:52 PM - 4:22 PM

Minor Periods

7:35 PM - 9:05 PM
8:20 AM - 9:50 AM

Action Rating: 2 out of 5

Thursday, January 22, 2026

Weather Forecast

Partly Cloudy
42.6°F
34.2°F
38.3°F
73%
0 in
0%
0%
19.2 mph
0.3


Air Quality

AQI: 1 - Good
PM2.5: 8.68 μg/m3
PM10: 9.61 μg/m3
Carbon Monoxide: 214.85 μg/m3
Nitrogen Dioxide: 16.48 μg/m3
Sulphur Dioxide: 6.31 μg/m3
Ozone: 62.84 μg/m3

Astronomical

Sunrise: 7:10 AM
Sun Transit: 12:04 AM
Sunset: 4:58 PM
Daylight: 9 hrs 48 mins
Moonrise: 9:12 AM
Moon Transit: 12:00 AM
Moonset: 9:12 PM
Moon Phase: Waxing Crescent
Moon Illumination: 15.4%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
4:33 AM - 7:03 AM

Minor Periods

8:42 PM - 10:12 PM
8:42 AM - 10:12 AM

Action Rating: 3 out of 5

Friday, January 23, 2026

Weather Forecast

Partly Cloudy
30°F
20.8°F
27.1°F
55%
0 in
0%
0%
18.8 mph
0.2


Air Quality

AQI: 1 - Good
PM2.5: 12.55 μg/m3
PM10: 12.81 μg/m3
Carbon Monoxide: 225.68 μg/m3
Nitrogen Dioxide: 35.81 μg/m3
Sulphur Dioxide: 8.76 μg/m3
Ozone: 37.16 μg/m3

Astronomical

Sunrise: 7:10 AM
Sun Transit: 12:04 AM
Sunset: 4:59 PM
Daylight: 9 hrs 49 mins
Moonrise: 9:34 AM
Moon Transit: 9:54 AM
Moonset: 10:21 PM
Moon Phase: Waxing Crescent
Moon Illumination: 24.4%

Best Times for Fishing or Hunting

Major Periods

9:24 AM - 11:54 AM
9:24 AM - 11:54 AM

Minor Periods

9:51 PM - 11:21 PM
9:04 AM - 10:34 AM

Action Rating: 2 out of 5

Saturday, January 24, 2026

Weather Forecast

Partly Cloudy
17.4°F
11.4°F
15°F
43%
0 in
0%
0%
18.3 mph
0.4


Air Quality

AQI: 1 - Good
PM2.5: 5.45 μg/m3
PM10: 5.62 μg/m3
Carbon Monoxide: 182.66 μg/m3
Nitrogen Dioxide: 14.72 μg/m3
Sulphur Dioxide: 3.75 μg/m3
Ozone: 61.62 μg/m3

Astronomical

Sunrise: 7:09 AM
Sun Transit: 12:04 AM
Sunset: 5:00 PM
Daylight: 9 hrs 51 mins
Moonrise: 9:56 AM
Moon Transit: 4:37 PM
Moonset: 11:32 PM
Moon Phase: First Quarter
Moon Illumination: 34.7%

Best Times for Fishing or Hunting

Major Periods

6:03 AM - 8:33 AM
4:07 PM - 6:37 PM

Minor Periods

12:00 AM - 12:00 AM
9:26 AM - 10:56 AM

Action Rating: 2 out of 5

Sunday, January 25, 2026

Weather Forecast

Moderate or heavy snow showers
18.1°F
15.3°F
16.7°F
55%
0.06 in
68%
34%
11.6 mph
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: 7:08 AM
Sun Transit: 12:04 AM
Sunset: 5:02 PM
Daylight: 9 hrs 53 mins
Moonrise: 10:22 AM
Moon Transit: 5:26 PM
Moonset: 12:32 AM
Moon Phase: First Quarter
Moon Illumination: 45.8%

Best Times for Fishing or Hunting

Major Periods

6:51 AM - 9:21 AM
4:56 PM - 7:26 PM

Minor Periods

9:52 AM - 11:22 AM
12:00 AM - 12:00 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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