Gilgo Beach — Water Temperature, Sea Conditions & Trends
This page provides clear and up-to-date information about water temperature for Gilgo Beach (New York, United States). It includes the current water temperature, daily data for the last month presented in a simple chart, and a 7-day forecast. The page also compares today’s value with typical averages for this period, shows usual monthly ranges during the year, and lists nearby beaches with short descriptions. Local weather for the next few days and general details about Gilgo Beach help you plan your visit and choose the best time for swimming.
Current Water Temperature
Water temperature in Gilgo Beach in the Atlantic Ocean today is 18°C.
Water Temperature: Daily Trends, Historical Records, and Forecast
⚠️ As of today, the minimum water temperature ranges from 65°F (18°C) to 68°F (20°C). This is already quite warm water, which is ideal for most people. Swimming becomes comfortable, and prolonged stays in the water do not cause discomfort. This temperature is perfect for family trips and for those who prefer warmer water. It is also comfortable for water sports such as surfing or swimming.
It is important to note that these swimming tips and recommendations apply only in good weather. When the air temperature is below 68°F (20°C), and sometimes even below 77°F (25°C), swimming can be unpleasant even with relatively high water temperatures.
Water Temperature Chart Over the Last 30 Days
Water temperature in Gilgo Beach has risen over the last week and month. Currently, the sea water temperature at this location matches the average for this day in previous years.
According to our forecast, Water temperature in Gilgo Beach will be 18.8°C in the next 7 days. See the table below for daily data for the upcoming week.
Table of Daily Sea Temperature Data
| Date | Current | Average | Forecast |
|---|---|---|---|
| JUN 6 | 13.9°C | 16.0°C | |
| JUN 7 | 14.6°C | 16.0°C | |
| JUN 8 | 15.5°C | 16.3°C | |
| JUN 9 | 15.6°C | 16.5°C | |
| JUN 10 | 16.0°C | 17.0°C | |
| JUN 11 | 17.3°C | 17.3°C | |
| JUN 12 | 17.1°C | 17.0°C | |
| JUN 13 | 17.2°C | 17.8°C | |
| JUN 14 | 18.2°C | 17.8°C | 18.2°C |
| JUN 15 | 17.5°C | 18.3°C | |
| JUN 16 | 18.0°C | 18.4°C | |
| JUN 17 | 18.5°C | 18.4°C | |
| JUN 18 | 18.5°C | 18.5°C | |
| JUN 19 | 18.3°C | 18.6°C | |
| JUN 20 | 18.5°C | 18.7°C | |
| JUN 21 | 19.3°C | 18.8°C |
* Current - Actual water temperature value
** Average - Average water temperature on this day in recent years
*** Forecast - Our water temperature forecast
Actual nearshore water temperatures may fluctuate by several degrees from the reported values, especially following heavy rainfall or extended periods of strong winds. Certain wind patterns can cause colder, deeper waters to rise and replace the sun-warmed surface water, leading to noticeable variations.
Our forecast is based on a proprietary mathematical model that considers real-time water temperature changes, historical trends, key weather patterns, wind strength and direction, and air temperature specific to each region. Additionally, we incorporate data from other resorts to enhance accuracy.
Water temperature data for this location is gathered from various sources, including buoys and satellite sea and ocean surface maps provided by the NOAA agency. We also incorporate data from local authorities in each specific location worldwide to ensure more accurate temperature readings.
Annual Water Temperature Overview by Month
Monthly Water Temp Ranges
Annual Water Temperature Trend
Gilgo Beach, located on the southern shore of Long Island in Suffolk County, is a wide, sandy barrier beach facing the Atlantic Ocean and the bay side. Water temperatures there change substantially through the year: in mid-winter (January–February) surface temperatures commonly hover near 0–4°C, early spring (March–May) tends to be cooler to mild at roughly 4–15°C with late spring warming into the teens, summer (June–August) brings the warmest conditions typically in the range of about 18–24°C, and autumn (September–November) usually sees a gradual cooling through roughly 10–18°C. These are approximate seasonal patterns; short-term weather, tides and currents can produce notable day-to-day variation in local water temperature.
Monthly Water Temperature Range (Min, Max & Average)
| Month | Min | Avg | Max |
|---|---|---|---|
| January | 2°C | 6°C | 8°C |
| February | 2°C | 4°C | 7°C |
| March | 2°C | 5°C | 8°C |
| April | 4°C | 8°C | 12°C |
| May | 8°C | 13°C | 18°C |
| June | 14°C | 18°C | 23°C |
| July | 18°C | 23°C | 25°C |
| August | 21°C | 23°C | 26°C |
| September | 18°C | 21°C | 25°C |
| October | 13°C | 19°C | 22°C |
| November | 9°C | 14°C | 17°C |
| December | 5°C | 10°C | 13°C |
* Click on a month to view detailed water temperature data.
Gilgo Beach: Weather Forecast
June 14
June 15
June 16
June 17
June 18
Location, Beaches & Local Information
Nearby Beaches & Facilities
Gilgo State Park
Tobay Beach
Amityville Municipal Bathing Beach
Tanner Park
Overlook Beach
Green Harbour Beach
Venetian Shores Park
Philip B Healey Beach At Florence Avenue
Jones Beach State Park
Swimming Conditions
Swimming at Gilgo Beach is most comfortable in the height of summer when water temperatures are generally in the low twenties Celsius, making laps and casual wading pleasant for most visitors. Many parts of the beach are relatively undeveloped, so lifeguard coverage and amenities can be limited or seasonal; swimmers should observe posted signage and favor guarded sections when available. Outside midsummer, water under about 15°C can feel uncomfortably cold and raises the risk of cold-water shock, so wearing a wetsuit is advisable for prolonged exposure or water sports in spring and autumn. Currents and occasional rip flows occur along this stretch of coastline, so local knowledge and caution are important. Beyond swimming, Gilgo suits quieter beach holidays focused on walking, wildlife viewing and shoreline recreation, but visitors should plan around basic facilities and seasonal services.