Water Temperature of Great South Bay in West Sayville, NY
Current Water Temperature
Measurement Time: Thursday, February 13, 2025, 6:54 PM EST
Temperature Locations
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Local Points of Interest
Green Creek; Sayville Beach & MarinaStation 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

Five Day Weather Forecast

Thu
H: 23°F
L: 3°F

Fri
H: 23°F
L: 8°F

Sat
H: 19°F
L: 8°F

Sun
H: 24°F
L: 18°F

Mon
H: 31°F
L: 15°F
Air Quality
Nitrogen Dioxide: 18.45 μg/m3
Sulphur Dioxide: 2.85 μg/m3
Ozone: 52 μg/m3
Astronomical
Sun Transit: 12:05 AM
Sunset: 5:06 PM
Daylight: 10 hrs 1 mins
Moon Transit: 9:25 PM
Moonset: 4:31 AM
Moon Phase: Waxing Gibbous
Moon Illumination: 86.7%
Best Times for Fishing or Hunting
Major Periods
10:44 AM - 1:14 PM8:55 PM - 11:25 PM
Minor Periods
12:44 AM - 2:14 PM4:01 AM - 5:31 AM
Action Rating: 2 out of 5
Cold Weather Advisory issued January 29 at 12:51AM EST until January 30 at 10:00AM EST by NWS Upton NY
Effective: Thu January 29, 2026, 12:51 AM
Expires: Thu January 29, 2026, 9:15 AM
* WHAT...Very cold wind chills as low as 7 below expected. * WHERE...Northeast Suffolk, Northwest Suffolk, Southeast Suffolk, and Southwest Suffolk Counties. * WHEN...From midnight tonight to 10 AM EST Friday. * IMPACTS...The cold wind chills could result in hypothermia if precautions are not taken.
Use caution while traveling outside. Wear appropriate clothing, a hat, and gloves.
Cold Weather Advisory issued January 28 at 12:33PM EST until January 29 at 10:00AM EST by NWS Upton NY
Effective: Wed January 28, 2026, 12:33 PM
Expires: Thu January 29, 2026, 10:00 AM
* WHAT...Very cold wind chills as low as 10 below expected. * WHERE...Portions of northeast New Jersey and southeast New York. * WHEN...From 1 AM to 10 AM EST Thursday. * IMPACTS...The cold wind chills could result in hypothermia if precautions are not taken.
Use caution while traveling outside. Wear appropriate clothing, a hat, and gloves.
Cold Weather Advisory issued January 28 at 4:36PM EST until January 29 at 10:00AM EST by NWS Upton NY
Effective: Wed January 28, 2026, 4:36 PM
Expires: Thu January 29, 2026, 3:00 AM
* WHAT...Very cold wind chills as low as 10 below expected. * WHERE...Portions of northeast New Jersey and southeast New York. * WHEN...From 1 AM to 10 AM EST Thursday. * IMPACTS...The cold wind chills could result in hypothermia if precautions are not taken.
Wear appropriate clothing, a hat, and gloves. Keep pets indoors as much as possible. Make frequent checks on older family, friends, and neighbors. Ensure portable heaters are used correctly. Do not use generators or grills inside.
Cold Weather Advisory issued January 29 at 12:51AM EST until January 30 at 10:00AM EST by NWS Upton NY
Effective: Thu January 29, 2026, 12:51 AM
Expires: Thu January 29, 2026, 9:15 AM
* WHAT...For the first Cold Weather Advisory, very cold wind chills as low as 5 below expected. For the second Cold Weather Advisory, very cold wind chills as low as 8 below expected. * WHERE...Northern Nassau and Southern Nassau Counties. * WHEN...For the first Cold Weather Advisory, until 10 AM EST this morning. For the second Cold Weather Advisory, from midnight tonight to 10 AM EST Friday. * IMPACTS...The cold wind chills could result in hypothermia if precautions are not taken.
Use caution while traveling outside. Wear appropriate clothing, a hat, and gloves.
Cold Weather Advisory issued January 29 at 12:51AM EST until January 29 at 10:00AM EST by NWS Upton NY
Effective: Thu January 29, 2026, 12:51 AM
Expires: Thu January 29, 2026, 9:15 AM
* WHAT...For the first Cold Weather Advisory, very cold wind chills as low as 5 below expected. For the second Cold Weather Advisory, very cold wind chills as low as 8 below expected. * WHERE...Northern Nassau and Southern Nassau Counties. * WHEN...For the first Cold Weather Advisory, until 10 AM EST this morning. For the second Cold Weather Advisory, from midnight tonight to 10 AM EST Friday. * IMPACTS...The cold wind chills could result in hypothermia if precautions are not taken.
Use caution while traveling outside. Wear appropriate clothing, a hat, and gloves.
Cold Weather Advisory issued January 29 at 12:51AM EST until January 30 at 10:00AM EST by NWS Upton NY
Effective: Thu January 29, 2026, 12:51 AM
Expires: Thu January 29, 2026, 9:15 AM
* WHAT...For the first Cold Weather Advisory, very cold wind chills as low as 6 below expected. For the second Cold Weather Advisory, very cold wind chills as low as 9 below expected. * WHERE...Bronx, Kings (Brooklyn), New York (Manhattan), Northern Queens, Richmond (Staten Island), and Southern Queens Counties. * WHEN...For the first Cold Weather Advisory, until 10 AM EST this morning. For the second Cold Weather Advisory, from midnight tonight to 10 AM EST Friday. * IMPACTS...The cold wind chills could result in hypothermia if precautions are not taken.
Use caution while traveling outside. Wear appropriate clothing, a hat, and gloves.
Cold Weather Advisory issued January 29 at 12:51AM EST until January 29 at 10:00AM EST by NWS Upton NY
Effective: Thu January 29, 2026, 12:51 AM
Expires: Thu January 29, 2026, 9:15 AM
* WHAT...For the first Cold Weather Advisory, very cold wind chills as low as 6 below expected. For the second Cold Weather Advisory, very cold wind chills as low as 9 below expected. * WHERE...Bronx, Kings (Brooklyn), New York (Manhattan), Northern Queens, Richmond (Staten Island), and Southern Queens Counties. * WHEN...For the first Cold Weather Advisory, until 10 AM EST this morning. For the second Cold Weather Advisory, from midnight tonight to 10 AM EST Friday. * IMPACTS...The cold wind chills could result in hypothermia if precautions are not taken.
Use caution while traveling outside. Wear appropriate clothing, a hat, and gloves.
Cold Weather Advisory issued January 29 at 12:51AM EST until January 30 at 10:00AM EST by NWS Upton NY
Effective: Thu January 29, 2026, 12:51 AM
Expires: Thu January 29, 2026, 9:15 AM
* WHAT...Very cold wind chills as low as 14 below expected. * WHERE...Northern Fairfield, Northern Middlesex, Northern New Haven, and Northern New London Counties. * WHEN...From midnight tonight to 10 AM EST Friday. * IMPACTS...The cold wind chills could result in hypothermia if precautions are not taken.
Use caution while traveling outside. Wear appropriate clothing, a hat, and gloves. Keep pets indoors as much as possible. Make frequent checks on older family, friends, and neighbors. Ensure portable heaters are used correctly. Do not use generators or grills inside.
Cold Weather Advisory issued January 28 at 4:36PM EST until January 29 at 10:00AM EST by NWS Upton NY
Effective: Wed January 28, 2026, 4:36 PM
Expires: Thu January 29, 2026, 3:00 AM
* WHAT...Very cold wind chills as low as 10 below expected. * WHERE...In New Jersey, Eastern Bergen and Western Bergen Counties. In New York, Northern Westchester, Putnam, Rockland, and Southern Westchester Counties. * WHEN...From 1 AM to 10 AM EST Thursday. * IMPACTS...The cold wind chills could result in hypothermia if precautions are not taken.
Wear appropriate clothing, a hat, and gloves. Keep pets indoors as much as possible. Make frequent checks on older family, friends, and neighbors. Ensure portable heaters are used correctly. Do not use generators or grills inside.
Cold Weather Advisory issued January 29 at 12:51AM EST until January 30 at 10:00AM EST by NWS Upton NY
Effective: Thu January 29, 2026, 12:51 AM
Expires: Thu January 29, 2026, 9:15 AM
* WHAT...For the first Cold Weather Advisory, very cold wind chills as low as 10 below expected. For the second Cold Weather Advisory, very cold wind chills as low as 15 below expected. * WHERE...Northern Westchester, Putnam, Rockland, and Southern Westchester Counties. * WHEN...For the first Cold Weather Advisory, until 10 AM EST this morning. For the second Cold Weather Advisory, from midnight tonight to 10 AM EST Friday. * IMPACTS...The cold wind chills could result in hypothermia if precautions are not taken.
Use caution while traveling outside. Wear appropriate clothing, a hat, and gloves. Keep pets indoors as much as possible. Make frequent checks on older family, friends, and neighbors. Ensure portable heaters are used correctly. Do not use generators or grills inside.
Cold Weather Advisory issued January 29 at 12:51AM EST until January 29 at 10:00AM EST by NWS Upton NY
Effective: Thu January 29, 2026, 12:51 AM
Expires: Thu January 29, 2026, 9:15 AM
* WHAT...For the first Cold Weather Advisory, very cold wind chills as low as 10 below expected. For the second Cold Weather Advisory, very cold wind chills as low as 15 below expected. * WHERE...Northern Westchester, Putnam, Rockland, and Southern Westchester Counties. * WHEN...For the first Cold Weather Advisory, until 10 AM EST this morning. For the second Cold Weather Advisory, from midnight tonight to 10 AM EST Friday. * IMPACTS...The cold wind chills could result in hypothermia if precautions are not taken.
Use caution while traveling outside. Wear appropriate clothing, a hat, and gloves. Keep pets indoors as much as possible. Make frequent checks on older family, friends, and neighbors. Ensure portable heaters are used correctly. Do not use generators or grills inside.
Cold Weather Advisory issued January 29 at 12:51AM EST until January 29 at 10:00AM EST by NWS Upton NY
Effective: Thu January 29, 2026, 12:51 AM
Expires: Thu January 29, 2026, 9:15 AM
* WHAT...For the first Cold Weather Advisory, very cold wind chills as low as 10 below expected. For the second Cold Weather Advisory, very cold wind chills as low as 12 below expected. * WHERE...Eastern Bergen and Western Bergen Counties. * WHEN...For the first Cold Weather Advisory, until 10 AM EST this morning. For the second Cold Weather Advisory, from midnight tonight to 10 AM EST Friday. * IMPACTS...The cold wind chills could result in hypothermia if precautions are not taken.
Use caution while traveling outside. Wear appropriate clothing, a hat, and gloves. Keep pets indoors as much as possible. Make frequent checks on older family, friends, and neighbors. Ensure portable heaters are used correctly. Do not use generators or grills inside.
Cold Weather Advisory issued January 29 at 12:51AM EST until January 30 at 10:00AM EST by NWS Upton NY
Effective: Thu January 29, 2026, 12:51 AM
Expires: Thu January 29, 2026, 9:15 AM
* WHAT...For the first Cold Weather Advisory, very cold wind chills as low as 10 below expected. For the second Cold Weather Advisory, very cold wind chills as low as 12 below expected. * WHERE...Eastern Bergen and Western Bergen Counties. * WHEN...For the first Cold Weather Advisory, until 10 AM EST this morning. For the second Cold Weather Advisory, from midnight tonight to 10 AM EST Friday. * IMPACTS...The cold wind chills could result in hypothermia if precautions are not taken.
Use caution while traveling outside. Wear appropriate clothing, a hat, and gloves. Keep pets indoors as much as possible. Make frequent checks on older family, friends, and neighbors. Ensure portable heaters are used correctly. Do not use generators or grills inside.
Weather Forecast
Air Quality
Nitrogen Dioxide: 29.56 μg/m3
Sulphur Dioxide: 4.13 μg/m3
Ozone: 45.72 μg/m3
Astronomical
Sun Transit: 12:05 AM
Sunset: 5:06 PM
Daylight: 10 hrs 1 mins
Moon Transit: 9:25 PM
Moonset: 4:31 AM
Moon Phase: Waxing Gibbous
Moon Illumination: 86.7%
Best Times for Fishing or Hunting
Major Periods
10:44 AM - 1:14 PM8:55 PM - 11:25 PM
Minor Periods
12:44 AM - 2:14 PM4:01 AM - 5:31 AM
Action Rating: 2 out of 5
Weather Forecast
Air Quality
Nitrogen Dioxide: 16.35 μg/m3
Sulphur Dioxide: 3.06 μg/m3
Ozone: 58.96 μg/m3
Astronomical
Sun Transit: 12:05 AM
Sunset: 5:08 PM
Daylight: 10 hrs 3 mins
Moon Transit: 10:29 PM
Moonset: 5:34 AM
Moon Phase: Waxing Gibbous
Moon Illumination: 93.4%
Best Times for Fishing or Hunting
Major Periods
11:48 AM - 2:18 PM12:00 AM - 12:00 AM
Minor Periods
1:55 PM - 3:25 PM5:04 AM - 6:34 AM
Action Rating: 2 out of 5
Weather Forecast
Air Quality
Nitrogen Dioxide: 19.95 μg/m3
Sulphur Dioxide: 3.09 μg/m3
Ozone: 53.44 μg/m3
Astronomical
Sun Transit: 12:05 AM
Sunset: 5:09 PM
Daylight: 10 hrs 6 mins
Moon Transit: 11:29 PM
Moonset: 6:24 AM
Moon Phase: Waxing Gibbous
Moon Illumination: 97.9%
Best Times for Fishing or Hunting
Major Periods
12:50 AM - 3:20 PM12:00 AM - 12:00 AM
Minor Periods
3:12 PM - 4:42 PM5:54 AM - 7:24 AM
Action Rating: 4 out of 5
Weather Forecast
Air Quality
Nitrogen Dioxide: 11.33 μg/m3
Sulphur Dioxide: 2.17 μg/m3
Ozone: 70.68 μg/m3
Astronomical
Sun Transit: 12:05 AM
Sunset: 5:10 PM
Daylight: 10 hrs 8 mins
Moon Transit: 12:00 AM
Moonset: 7:04 AM
Moon Phase: Full
Moon Illumination: 99.9%
Best Times for Fishing or Hunting
Major Periods
12:00 AM - 12:00 AM1:47 PM - 4:17 PM
Minor Periods
4:30 PM - 6:00 PM6:34 AM - 8:04 AM
Action Rating: 4 out of 5
Weather Forecast
Air Quality
Nitrogen Dioxide: 8.57 μg/m3
Sulphur Dioxide: 2.41 μg/m3
Ozone: 81.08 μg/m3
Astronomical
Sun Transit: 12:06 AM
Sunset: 5:11 PM
Daylight: 10 hrs 10 mins
Moon Transit: 12:24 AM
Moonset: 7:35 AM
Moon Phase: Full
Moon Illumination: 99.4%
Best Times for Fishing or Hunting
Major Periods
12:00 AM - 12:00 AM2:39 PM - 5:09 PM
Minor Periods
5:45 PM - 7:15 PM7:05 AM - 8:35 AM
Action Rating: 5 out of 5
