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

46°F
Partly cloudy
Partly cloudy
40.8°F
47.4°F
71%
SSE 11 mph
15.7 mph
43.6°F
33.9°F
0 in
75%
9 mi
1030 mbar
0

Five Day Weather Forecast

Sunny
Sun
H: 58°F
L: 38°F
Overcast
Mon
H: 62°F
L: 43°F
Partly Cloudy
Tue
H: 73°F
L: 54°F
Patchy rain nearby
Wed
H: 76°F
L: 51°F
Partly Cloudy
Thu
H: 68°F
L: 56°F

Air Quality

AQI: 2 - Moderate
PM2.5: 11.05 μg/m3
PM10: 14.95 μg/m3
Carbon Monoxide: 167.85 μg/m3
Nitrogen Dioxide: 6.85 μg/m3
Sulphur Dioxide: 1.95 μg/m3
Ozone: 96 μg/m3

Astronomical

Sunrise: 6:18 AM
Sun Transit: 12:53 AM
Sunset: 7:29 PM
Daylight: 13 hrs 10 mins
Moonrise: 3:53 AM
Moon Transit: 8:58 AM
Moonset: 2:12 PM
Moon Phase: Waning Crescent
Moon Illumination: 12.6%

Best Times for Fishing or Hunting

Major Periods

8:28 AM - 10:58 AM
12:00 AM - 12:00 AM

Minor Periods

1:42 PM - 3:12 PM
3:23 AM - 4:53 AM

Action Rating: 2 out of 5

Sunday, April 12, 2026

Weather Forecast

Sunny
57.9°F
37.6°F
47.6°F
54%
0 in
0%
0%
11 mph
1.6


Air Quality

AQI: 1 - Good
PM2.5: 7.39 μg/m3
PM10: 8.67 μg/m3
Carbon Monoxide: 197.21 μg/m3
Nitrogen Dioxide: 10.9 μg/m3
Sulphur Dioxide: 2.45 μg/m3
Ozone: 80.2 μg/m3

Astronomical

Sunrise: 6:18 AM
Sun Transit: 12:53 AM
Sunset: 7:29 PM
Daylight: 13 hrs 10 mins
Moonrise: 3:53 AM
Moon Transit: 8:58 AM
Moonset: 2:12 PM
Moon Phase: Waning Crescent
Moon Illumination: 12.6%

Best Times for Fishing or Hunting

Major Periods

8:28 AM - 10:58 AM
12:00 AM - 12:00 AM

Minor Periods

1:42 PM - 3:12 PM
3:23 AM - 4:53 AM

Action Rating: 2 out of 5

Monday, April 13, 2026

Weather Forecast

Overcast
61.5°F
42.8°F
52.3°F
89%
0 in
0%
0%
18.1 mph
1.4


Air Quality

AQI: 1 - Good
PM2.5: 10.62 μg/m3
PM10: 13.03 μg/m3
Carbon Monoxide: 169.81 μg/m3
Nitrogen Dioxide: 10.96 μg/m3
Sulphur Dioxide: 3.22 μg/m3
Ozone: 99.84 μg/m3

Astronomical

Sunrise: 6:17 AM
Sun Transit: 12:52 AM
Sunset: 7:30 PM
Daylight: 13 hrs 13 mins
Moonrise: 4:19 AM
Moon Transit: 9:44 AM
Moonset: 3:20 PM
Moon Phase: Waning Crescent
Moon Illumination: 6.1%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
9:14 AM - 11:44 AM

Minor Periods

2:50 PM - 4:20 PM
3:49 AM - 5:19 AM

Action Rating: 2 out of 5

Tuesday, April 14, 2026

Weather Forecast

Partly Cloudy
72.9°F
54.1°F
61°F
84%
0 in
0%
0%
12.5 mph
1.7


Air Quality

AQI: 1 - Good
PM2.5: 14.05 μg/m3
PM10: 15.09 μg/m3
Carbon Monoxide: 201.97 μg/m3
Nitrogen Dioxide: 26.28 μg/m3
Sulphur Dioxide: 7.47 μg/m3
Ozone: 75.76 μg/m3

Astronomical

Sunrise: 6:15 AM
Sun Transit: 12:52 AM
Sunset: 7:31 PM
Daylight: 13 hrs 15 mins
Moonrise: 4:42 AM
Moon Transit: 10:30 AM
Moonset: 4:30 PM
Moon Phase: Waning Crescent
Moon Illumination: 1.9%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
10:00 AM - 12:30 AM

Minor Periods

4:00 PM - 5:30 PM
4:12 AM - 5:42 AM

Action Rating: 2 out of 5

Wednesday, April 15, 2026

Weather Forecast

Patchy rain nearby
75.7°F
51.4°F
63.1°F
78%
0.01 in
76%
0%
13.4 mph
1.9


Air Quality

AQI: 2 - Moderate
PM2.5: 17.14 μg/m3
PM10: 18.37 μg/m3
Carbon Monoxide: 218.57 μg/m3
Nitrogen Dioxide: 27.43 μg/m3
Sulphur Dioxide: 6.1 μg/m3
Ozone: 76.96 μg/m3

Astronomical

Sunrise: 6:14 AM
Sun Transit: 12:52 AM
Sunset: 7:32 PM
Daylight: 13 hrs 18 mins
Moonrise: 5:04 AM
Moon Transit: 11:16 AM
Moonset: 5:41 PM
Moon Phase: Waning Crescent
Moon Illumination: 0.1%

Best Times for Fishing or Hunting

Major Periods

11:03 AM - 1:33 PM
10:46 AM - 1:16 PM

Minor Periods

5:11 PM - 6:41 PM
4:34 AM - 6:04 AM

Action Rating: 3 out of 5

Thursday, April 16, 2026

Weather Forecast

Partly Cloudy
67.7°F
56.4°F
62.9°F
81%
0 in
0%
0%
10.3 mph
1.7


Air Quality

AQI: 2 - Moderate
PM2.5: 18.7 μg/m3
PM10: 22.04 μg/m3
Carbon Monoxide: 224.08 μg/m3
Nitrogen Dioxide: 10.8 μg/m3
Sulphur Dioxide: 3.07 μg/m3
Ozone: 81.77 μg/m3

Astronomical

Sunrise: 6:12 AM
Sun Transit: 12:52 AM
Sunset: 7:33 PM
Daylight: 13 hrs 21 mins
Moonrise: 5:28 AM
Moon Transit: 12:05 AM
Moonset: 6:56 PM
Moon Phase: New
Moon Illumination: 0.8%

Best Times for Fishing or Hunting

Major Periods

1:30 AM - 4:00 AM
11:35 AM - 2:05 PM

Minor Periods

6:26 PM - 7:56 PM
4:58 AM - 6:28 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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