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

December weather forecast and climate
Roslyn, NY

Ocean temperature

In Diciembre, the average ocean temperature in Roslyn, New York, is 48°F (8.9°C).
Note: Swimming in 48°F (8.9°C) is considered dangerous. Unprotected immersion in temperatures below 50°F (10°C) causes quickly maximum intensity cold shock with hyperventilation.

Daylight

The month with the shortest days in Roslyn, New York, is Diciembre, with an average of 9.3h of daylight.

What is the ocean temperature in Diciembre in Roslyn?

In Diciembre, the average ocean temperature in Roslyn is 48°F (8.9°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 month with the shortest days in Roslyn?

Diciembre has the shortest days of the year in Roslyn, New York, with an average of 9.3h of daylight.

What is the average length of the day in Diciembre in Roslyn?

The average length of the day in Diciembre in Roslyn is 9.3h.
Average sea temperature in December - Roslyn, NY
  • Average sea temperature in December: 48.1°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 December - Roslyn, NY
  • Average daylight in December: 9.3h

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