New York, USA
Long-term weather forecast
Long-term weather forecast

May weather forecast and climate
Dexter, NY

Ocean temperature

In Dexter, New York, the average seawater temperature in Mayo is 42.1°F (5.6°C).
Note: At temperatures below 50°F (10°C), swimming in a suitably protected swimsuit is feasible; otherwise, cold shock and loss of breathing control are imminent. Even a short swim, without thermal protection, at temperatures around 55.4°F (13°C) is not comfortable.


The average length of the day in Mayo in Dexter is 14.8h.

What is the ocean temperature in Mayo in Dexter?

In Dexter, in Mayo, the average water temperature is 42.1°F (5.6°C). Swimming in 42.1°F (5.6°C) is considered dangerous. Unprotected immersion in temperatures below 50°F (10°C) causes quickly maximum intensity cold shock with hyperventilation.

What is the average length of the day in Mayo in Dexter?

In Mayo, the average length of the day in Dexter is 14.8h.
Average sea temperature in May - Dexter, NY
  • Average sea temperature in May: 42.1°F

The best month for swimming (with the highest average sea temperature) is August (70.1°F).
The coldest month (with the lowest average sea temperature) is March (35.5°F).

Average daylight in May - Dexter, NY
  • Average daylight in May: 14.8h

The month with the longest days is June (Average daylight: 15.4h).
The month with shortest days is December (Average daylight: 9h).