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

60.1°F
Clear
Clear
60.1°F
62.5°F
86%
N 4 mph
7.8 mph
62.5°F
54.7°F
0 in
0%
9 mi
1017 mbar
0

Five Day Weather Forecast

Patchy rain nearby
Thu
H: 87°F
L: 61°F
Moderate rain
Fri
H: 70°F
L: 66°F
Patchy rain nearby
Sat
H: 73°F
L: 67°F
Patchy rain nearby
Sun
H: 75°F
L: 66°F
Sunny
Mon
H: 77°F
L: 67°F

Air Quality

PM2.5: 9.4 μg/m3
PM10: 9.8 μg/m3
Carbon Monoxide: 188 μg/m3
Nitrogen Dioxide: 21.1 μg/m3
Sulphur Dioxide: 0.7 μg/m3
Ozone: 23 μg/m3

Astronomical

Sunrise: 5:22 AM
Sun Transit: 12:55 AM
Sunset: 8:28 PM
Daylight: 15 hrs 6 mins
Moonrise: 5:01 PM
Moon Transit: 9:46 PM
Moonset: 1:56 AM
Moon Phase: Waxing Gibbous
Moon Illumination: 81.2%

Best Times for Fishing or Hunting

Major Periods

11:12 AM - 1:42 PM
9:16 PM - 11:46 PM

Minor Periods

4:31 PM - 6:01 PM
1:26 AM - 2:56 AM

Action Rating: 2 out of 5

Thursday, June 25, 2026

Weather Forecast

Patchy rain nearby
86.7°F
61.2°F
73.5°F
60%
0.02 in
36%
0%
13.6 mph
7.6


Air Quality

AQI: 1 - Good
PM2.5: 11.07 μg/m3
PM10: 12.78 μg/m3
Carbon Monoxide: 155.04 μg/m3
Nitrogen Dioxide: 12.43 μg/m3
Sulphur Dioxide: 0.98 μg/m3
Ozone: 72.17 μg/m3

Astronomical

Sunrise: 5:22 AM
Sun Transit: 12:55 AM
Sunset: 8:28 PM
Daylight: 15 hrs 6 mins
Moonrise: 5:01 PM
Moon Transit: 9:46 PM
Moonset: 1:56 AM
Moon Phase: Waxing Gibbous
Moon Illumination: 81.2%

Best Times for Fishing or Hunting

Major Periods

11:12 AM - 1:42 PM
9:16 PM - 11:46 PM

Minor Periods

4:31 PM - 6:01 PM
1:26 AM - 2:56 AM

Action Rating: 2 out of 5

Friday, June 26, 2026

Weather Forecast

Moderate rain
69.7°F
66.3°F
67.8°F
91%
0.39 in
88%
0%
10.7 mph
7


Air Quality

AQI: 1 - Good
PM2.5: 13.48 μg/m3
PM10: 16.63 μg/m3
Carbon Monoxide: 137.25 μg/m3
Nitrogen Dioxide: 13.63 μg/m3
Sulphur Dioxide: 1.49 μg/m3
Ozone: 93.08 μg/m3

Astronomical

Sunrise: 5:23 AM
Sun Transit: 12:55 AM
Sunset: 8:28 PM
Daylight: 15 hrs 5 mins
Moonrise: 6:04 PM
Moon Transit: 10:34 PM
Moonset: 2:26 AM
Moon Phase: Waxing Gibbous
Moon Illumination: 89.2%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 2:30 PM
12:00 AM - 12:00 AM

Minor Periods

5:34 PM - 7:04 PM
1:56 AM - 3:26 AM

Action Rating: 2 out of 5

Saturday, June 27, 2026

Weather Forecast

Patchy rain nearby
73.4°F
66.8°F
69.5°F
88%
0.08 in
74%
0%
6.7 mph
7.4


Air Quality

AQI: 1 - Good
PM2.5: 14.65 μg/m3
PM10: 15.52 μg/m3
Carbon Monoxide: 188.88 μg/m3
Nitrogen Dioxide: 19.6 μg/m3
Sulphur Dioxide: 1.66 μg/m3
Ozone: 97.38 μg/m3

Astronomical

Sunrise: 5:23 AM
Sun Transit: 12:55 AM
Sunset: 8:28 PM
Daylight: 15 hrs 5 mins
Moonrise: 7:03 PM
Moon Transit: 11:25 PM
Moonset: 3:02 AM
Moon Phase: Waxing Gibbous
Moon Illumination: 95.2%

Best Times for Fishing or Hunting

Major Periods

12:49 AM - 3:19 PM
12:00 AM - 12:00 AM

Minor Periods

6:33 PM - 8:03 PM
2:32 AM - 4:02 AM

Action Rating: 3 out of 5

Sunday, June 28, 2026

Weather Forecast

Patchy rain nearby
74.9°F
65.9°F
70.3°F
83%
0.05 in
58%
0%
8.1 mph
7


Air Quality

AQI: 1 - Good
PM2.5: 10.41 μg/m3
PM10: 12.35 μg/m3
Carbon Monoxide: 171.9 μg/m3
Nitrogen Dioxide: 5.8 μg/m3
Sulphur Dioxide: 1.16 μg/m3
Ozone: 108.76 μg/m3

Astronomical

Sunrise: 5:23 AM
Sun Transit: 12:55 AM
Sunset: 8:28 PM
Daylight: 15 hrs 5 mins
Moonrise: 7:57 PM
Moon Transit: 12:00 AM
Moonset: 3:45 AM
Moon Phase: Waxing Gibbous
Moon Illumination: 98.8%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
1:40 PM - 4:10 PM

Minor Periods

7:27 PM - 8:57 PM
3:15 AM - 4:45 AM

Action Rating: 3 out of 5

Monday, June 29, 2026

Weather Forecast

Sunny
77.3°F
66.7°F
70.9°F
77%
0 in
9%
0%
12.1 mph
0.5


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: 5:24 AM
Sun Transit: 12:55 AM
Sunset: 8:28 PM
Daylight: 15 hrs 4 mins
Moonrise: 8:45 PM
Moon Transit: 12:16 AM
Moonset: 4:37 AM
Moon Phase: Full
Moon Illumination: 100.0%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
2:32 PM - 5:02 PM

Minor Periods

8:15 PM - 9:45 PM
4:07 AM - 5:37 AM

Action Rating: 5 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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