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
Partly cloudy
Partly cloudy
60.1°F
63°F
39%
WSW 14.5 mph
20.8 mph
63°F
33.7°F
0 in
75%
9 mi
1011 mbar
2.6

Five Day Weather Forecast

Patchy rain nearby
Fri
H: 66°F
L: 46°F
Patchy rain nearby
Sat
H: 59°F
L: 48°F
Patchy rain nearby
Sun
H: 64°F
L: 52°F
Heavy rain
Mon
H: 52°F
L: 47°F
Partly Cloudy
Tue
H: 60°F
L: 47°F

Air Quality

AQI: 1 - Good
PM2.5: 17.05 μg/m3
PM10: 18.75 μg/m3
Carbon Monoxide: 186.85 μg/m3
Nitrogen Dioxide: 17.45 μg/m3
Sulphur Dioxide: 4.95 μg/m3
Ozone: 97 μg/m3

Astronomical

Sunrise: 5:42 AM
Sun Transit: 12:48 AM
Sunset: 7:56 PM
Daylight: 14 hrs 14 mins
Moonrise: 1:23 AM
Moon Transit: 6:04 AM
Moonset: 10:52 AM
Moon Phase: Last Quarter
Moon Illumination: 47.9%

Best Times for Fishing or Hunting

Major Periods

5:34 AM - 8:04 AM
8:17 PM - 10:47 PM

Minor Periods

10:22 AM - 11:52 AM
12:53 AM - 2:23 AM

Action Rating: 4 out of 5

Friday, May 8, 2026

Weather Forecast

Patchy rain nearby
65.8°F
45.5°F
53.6°F
61%
0.02 in
84%
0%
15 mph
6.6


Air Quality

AQI: 1 - Good
PM2.5: 10.46 μg/m3
PM10: 11.08 μg/m3
Carbon Monoxide: 180.85 μg/m3
Nitrogen Dioxide: 16.85 μg/m3
Sulphur Dioxide: 3.74 μg/m3
Ozone: 72.6 μg/m3

Astronomical

Sunrise: 5:42 AM
Sun Transit: 12:48 AM
Sunset: 7:56 PM
Daylight: 14 hrs 14 mins
Moonrise: 1:23 AM
Moon Transit: 6:04 AM
Moonset: 10:52 AM
Moon Phase: Last Quarter
Moon Illumination: 47.9%

Best Times for Fishing or Hunting

Major Periods

5:34 AM - 8:04 AM
8:17 PM - 10:47 PM

Minor Periods

10:22 AM - 11:52 AM
12:53 AM - 2:23 AM

Action Rating: 4 out of 5

Saturday, May 9, 2026

Weather Forecast

Patchy rain nearby
58.6°F
47.8°F
54.1°F
84%
0.19 in
88%
0%
13 mph
3.3


Air Quality

AQI: 2 - Moderate
PM2.5: 17.39 μg/m3
PM10: 19.48 μg/m3
Carbon Monoxide: 217.21 μg/m3
Nitrogen Dioxide: 20.64 μg/m3
Sulphur Dioxide: 4.31 μg/m3
Ozone: 75.64 μg/m3

Astronomical

Sunrise: 5:41 AM
Sun Transit: 12:48 AM
Sunset: 7:57 PM
Daylight: 14 hrs 16 mins
Moonrise: 1:53 AM
Moon Transit: 6:51 AM
Moonset: 11:57 AM
Moon Phase: Last Quarter
Moon Illumination: 36.7%

Best Times for Fishing or Hunting

Major Periods

6:21 AM - 8:51 AM
9:03 PM - 11:33 PM

Minor Periods

11:27 AM - 12:57 AM
1:23 AM - 2:53 AM

Action Rating: 2 out of 5

Sunday, May 10, 2026

Weather Forecast

Patchy rain nearby
64°F
52.4°F
58.2°F
83%
0.07 in
83%
0%
10.1 mph
6.1


Air Quality

AQI: 2 - Moderate
PM2.5: 17.2 μg/m3
PM10: 18.65 μg/m3
Carbon Monoxide: 195.97 μg/m3
Nitrogen Dioxide: 16.04 μg/m3
Sulphur Dioxide: 5.41 μg/m3
Ozone: 92.24 μg/m3

Astronomical

Sunrise: 5:40 AM
Sun Transit: 12:48 AM
Sunset: 7:58 PM
Daylight: 14 hrs 18 mins
Moonrise: 2:19 AM
Moon Transit: 7:36 AM
Moonset: 1:03 PM
Moon Phase: Last Quarter
Moon Illumination: 26.2%

Best Times for Fishing or Hunting

Major Periods

7:06 AM - 9:36 AM
12:00 AM - 12:00 AM

Minor Periods

12:33 AM - 2:03 PM
1:49 AM - 3:19 AM

Action Rating: 2 out of 5

Monday, May 11, 2026

Weather Forecast

Heavy rain
52.2°F
46.5°F
50.7°F
85%
1.23 in
87%
0%
17 mph
3.6


Air Quality

AQI: 1 - Good
PM2.5: 9.5 μg/m3
PM10: 10.29 μg/m3
Carbon Monoxide: 193.64 μg/m3
Nitrogen Dioxide: 10.12 μg/m3
Sulphur Dioxide: 2.16 μg/m3
Ozone: 90.36 μg/m3

Astronomical

Sunrise: 5:39 AM
Sun Transit: 12:48 AM
Sunset: 7:59 PM
Daylight: 14 hrs 20 mins
Moonrise: 2:42 AM
Moon Transit: 8:20 AM
Moonset: 2:10 PM
Moon Phase: Last Quarter
Moon Illumination: 16.9%

Best Times for Fishing or Hunting

Major Periods

7:50 AM - 10:20 AM
12:00 AM - 12:00 AM

Minor Periods

1:40 PM - 3:10 PM
2:12 AM - 3:42 AM

Action Rating: 2 out of 5

Tuesday, May 12, 2026

Weather Forecast

Partly Cloudy
59.9°F
46.7°F
53.6°F
53%
0 in
0%
0%
12.8 mph
1


Air Quality

AQI: 1 - Good
PM2.5: 4.41 μg/m3
PM10: 4.54 μg/m3
Carbon Monoxide: 175.91 μg/m3
Nitrogen Dioxide: 8.8 μg/m3
Sulphur Dioxide: 2.54 μg/m3
Ozone: 64.38 μg/m3

Astronomical

Sunrise: 5:38 AM
Sun Transit: 12:48 AM
Sunset: 8:00 PM
Daylight: 14 hrs 22 mins
Moonrise: 3:04 AM
Moon Transit: 9:41 PM
Moonset: 3:18 PM
Moon Phase: Waning Crescent
Moon Illumination: 9.3%

Best Times for Fishing or Hunting

Major Periods

9:11 PM - 11:41 PM
9:11 PM - 11:41 PM

Minor Periods

2:48 PM - 4:18 PM
2:34 AM - 4:04 AM

Action Rating: 2 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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