New York (United States): where to swim in October?
New York, in October: the sea is at 18.0 °C on average along the coast, from 17.6 °C to 18.2 °C depending on the spot. Where the water is warmest (18.2 °C), it is cool. Swimming is fine if you like cool water: you get used to it after a few minutes, especially in mild weather.
Sea temperature, month by month
| Month | Average temperature | Depending on the spot | Where it is warmest |
|---|---|---|---|
| January | 7.7 °C | 6.1 °C – 9.7 °C | very cold |
| February | 5.7 °C | 4.3 °C – 7.6 °C | very cold |
| March | 5.7 °C | 4.8 °C – 6.9 °C | very cold |
| April | 7.9 °C | 7.5 °C – 8.4 °C | very cold |
| May | 11.9 °C | 11.2 °C – 13.0 °C | cold |
| June | 17.3 °C | 16.5 °C – 18.5 °C | cool |
| July | 22.6 °C | 21.7 °C – 23.2 °C | warm |
| August | 23.3 °C | 22.5 °C – 24.1 °C | warm |
| September | 21.5 °C | 21.1 °C – 22.0 °C | pleasant |
| October | 18.0 °C | 17.6 °C – 18.2 °C | cool |
| November | 14.1 °C | 13.2 °C – 15.0 °C | cool |
| December | 10.7 °C | 9.2 °C – 12.4 °C | cold |
Compared with September, the water cools down by 3.5 °C in October. The warmest month: August (23.3 °C). The coldest: February (5.7 °C).
Nearby, in October
- Massachusetts 15.9 °C · cool
- New Jersey 18.8 °C · pleasant
And right now?
At sea, 14.4 °C on average across 25 stations, from 10.6 °C (Ogdensburg, NY) to 16.6 °C (Flax Pond At Old Field Ny (sonde : monitor)). In fresh water, 10.9 °C on average across 70 stations, from 5.2 °C (Buck Creek Near Inlet Ny) to 15.6 °C (Cannonsville Reservoir Near Kelsey Ny). New York: water temperature
Frequently asked questions
What is the sea temperature in October?
New York, in October: 18.0 °C on average along the coast, from 17.6 °C in the coolest waters to 18.2 °C in the warmest (average of the years 2011 to 2025).
Can you swim in October?
Where the water is warmest (18.2 °C), it is cool. Swimming is fine if you like cool water: you get used to it after a few minutes, especially in mild weather.
What is the best month for swimming?
The water is warmest in August (23.3 °C on average) and coldest in February (5.7 °C). Where the water is warmest, it goes above 20 °C in these months: July, August, September.
What temperature do you need to swim comfortably?
Below 15 °C the water is cold: the cold takes your breath away and tires you quickly. Between 20 °C and 25 °C most people find it pleasant. Below 10 °C it is very cold.
Where do these temperatures come from?
These are averages of the sea surface temperature from 2011 to 2025, computed from NOAA satellite images (OISST, one value about every 50 km), in a 100 km strip along the coasts of the main country: distant territories (overseas, remote islands) are not counted. It is an estimate, not a measurement taken at the beach: lakes and rivers are not included.