The most detailed information about the water temperature in Great River in Atlantic Ocean (New York, United States). Forecast of changes in water temperature for the next 10 days. Statistics by months for recent years. Information about the neighboring resorts. Weather forecast in Great River for a week.
Water temperature in Great River right now
data updated 17 minutes ago46°F
yesterday: 46°F
a week ago: 45°F
Trend: slow rise
Today water temperature in Great River is 46.4°F. In general, this water temperature is unacceptable for swimming. But hardened people can afford to be in such water for 5-10 minutes. In any case, the general weather is also important. So, the air temperature at the same time will reach 51°F.
Analysis and forecast
The water temperature today is slightly lower than the average on this day in recent years. Its value has rise both over the past 20 days and over the past week. Exactly a year ago, on this day, the water temperature in this location was 48°F. Water temperature range in Great River in April is from 39 to 53 degrees.
According to our forecast, the water temperature in Great River will slowly rise for at least the next 10 days and reach a value of 47°F.
Table of water temperature values in Great River
| Day | Fact* | Average** | Forecast*** |
| Apr 16 | 7.6°C | 8.3°C | |
| Apr 17 | 8.0°C | 8.5°C | |
| Apr 18 | 8.1°C | 8.5°C | |
| Apr 19 | 8.2°C | 8.5°C | |
| Apr 20 | 7.6°C | 8.5°C | |
| Apr 21 | 8.1°C | 9.0°C | |
| Apr 22 | 7.8°C | 9.0°C | |
| Apr 23 | 8.0°C | 9.3°C | |
| Apr 24 | 9.5°C | 8.2°C | |
| Apr 25 | 9.5°C | 8.2°C | |
| Apr 26 | 9.5°C | 8.2°C | |
| Apr 27 | 10.3°C | 8.9°C | |
| Apr 28 | 10.0°C | 8.6°C | |
| Apr 29 | 10.0°C | 8.6°C | |
| Apr 30 | 10.0°C | 8.6°C |
** Average - Average water temperature on this day in past years
*** Forecast - Our forecast for the water temperature
Actual nearshore temperatures may vary by several degrees from the indicated values. This is noticeable after heavy rain or after prolonged periods of strong winds. Some downstream winds cause cold, deep waters to replace surface waters that have been warmed by the sun.
To develop a forecast, we use our own mathematical model, which takes into account the current change in water temperature, historical data and the main weather trends, wind strength and direction, air temperature in each specific region. We also take into account data for other resorts in United States.
Annual graph of average water temperature change in Great River
Water temperature in Great River by month
Great River located in the northern hemisphere, at latitude 40 degrees. The comfortable water temperature for swimming is set here in June, almost always only at the end of the month. During a year in Great River there are 90 days of swimming. In general, the swimming season ends in September. Average annual water temperature on the coast in Great River is 55°F, by the seasons: in winter 43°F, in spring 46°F, in summer 70°F, in autumn 62°F. Minimum water temperature (38°F) in Great River it happens in January, maximum (77°F) in July.
You can find out detailed data on how the water temperature in Great River changes in each specific month:
Great River: general information and map
Neighboring cities and resorts
| City | Water* | Distance** |
| Islip | 46°C | 4km |
| West Sayville | 46°C | 5km |
| Long Island | 46°C | 8km |
| Fire Island | 46°C | 8km |
| Water Island | 46°C | 12km |
| Bellport | 45°C | 19km |
| Nissequogue | 46°C | 21km |
| Gilgo Beach | 46°C | 23km |
| Stony Brook | 46°C | 23km |
| Northport | 46°C | 25km |
| East Setauket | 46°C | 25km |
| Port Jefferson | 46°C | 26km |
** Straight line distance in kilometers
The warmest water today in United States recorded in Ocean Ridge, its value is 78°F. Lowest - in Kotzebue, there water temperature now 28°F. Average water temperature in the country today - 57°F.
Water temperature data in Great River and neighboring towns and resorts collected from various sources, using buoys, using satellite maps of sea, river and lake surfaces of the NOAA agency.
We use data from various local authorities in each specific location of the world to more accurately reflect temperature values.
The nearest airport is located in a 9 kilometers. This is Long Island Mac Arthur (ISP) airport. We have no information as to whether it is valid and what flights it receives or sends.
Great River: weather forecast
The weather forecast is shown in local time in Great River
14km/hhumidity: 56%, clouds: 0%
18km/hhumidity: 51%, clouds: 0%
18km/hhumidity: 55%, clouds: 3%
20km/hhumidity: 66%, clouds: 8%
20km/hhumidity: 70%, clouds: 69%
21km/hhumidity: 72%, clouds: 64%
27km/hhumidity: 76%, clouds: 99%
23km/hhumidity: 93%, clouds: 99%
22km/hhumidity: 86%, clouds: 100%
19km/hhumidity: 56%, clouds: 80%
32km/hhumidity: 45%, clouds: 48%
29km/hhumidity: 53%, clouds: 24%
30km/hhumidity: 46%, clouds: 2%
23km/hhumidity: 47%, clouds: 1%
17km/hhumidity: 50%, clouds: 0%
14km/hhumidity: 45%, clouds: 0%
5km/hhumidity: 27%, clouds: 0%
9km/hhumidity: 29%, clouds: 0%
18km/hhumidity: 42%, clouds: 0%
15km/hhumidity: 52%, clouds: 0%
13km/hhumidity: 57%, clouds: 0%
9km/hhumidity: 61%, clouds: 0%
5km/hhumidity: 63%, clouds: 0%
2km/hhumidity: 54%, clouds: 0%
10km/hhumidity: 48%, clouds: 0%
19km/hhumidity: 49%, clouds: 0%
18km/hhumidity: 49%, clouds: 0%
15km/hhumidity: 64%, clouds: 0%
16km/hhumidity: 70%, clouds: 64%
13km/hhumidity: 76%, clouds: 76%
8km/hhumidity: 78%, clouds: 98%
11km/hhumidity: 69%, clouds: 99%
15km/hhumidity: 61%, clouds: 100%
17km/hhumidity: 62%, clouds: 100%
17km/hhumidity: 67%, clouds: 100%
14km/hhumidity: 85%, clouds: 100%
15km/hhumidity: 94%, clouds: 100%
16km/hhumidity: 96%, clouds: 100%
