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

May weather forecast and climate
Roslyn Harbor, NY

Ocean temperature

In Roslyn Harbor, New York, in Mayo, the average water temperature is 54.1°F (12.3°C).
Note: Swimming in 54.1°F (12.3°C) is considered life-threatening. Even a few minutes in 55.4°F (13°C) water is uncomfortable, and swimming below 50°F (10°C) may cause total loss of breathing control and cold shock, depending on a person's physique.

Daylight

In Mayo, the average length of the day in Roslyn Harbor is 14.5h.

What is the water temperature in Mayo in Roslyn Harbor?

In Roslyn Harbor, the average seawater temperature in Mayo is 54.1°F (12.3°C). 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.

What is the average length of the day in Mayo in Roslyn Harbor?

In Mayo, the average length of the day in Roslyn Harbor, New York, is 14.5h.
Average sea temperature in May - Roslyn Harbor, NY
  • Average sea temperature in May: 54.1°F

The best month for swimming (with the highest average sea temperature) is August (74.1°F).
The coldest month (with the lowest average sea temperature) is February (39.9°F).

Average daylight in May - Roslyn Harbor, NY
  • Average daylight in May: 14.5h

The month with the longest days is June (Average daylight: 15.1h).
The month with shortest days is December (Average daylight: 9.3h).