December weather forecast and climate
Greater Napanee, Canada

Weather in December

Sea temperature

In Greater Napanee, Canada, in December, the average water temperature is 5.4°C (41.7°F).
Note: Swimming in 5.4°C (41.7°F) is considered life-threatening. Even a few minutes in 13°C (55.4°F) water is uncomfortable, and swimming below 10°C (50°F) may cause total loss of breathing control and cold shock, depending on a person's physique.

Daylight

With an average of 8.9h of daylight, December has the shortest days of the year.
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FAQ

What is the water temperature in December in Greater Napanee?

In Greater Napanee, Canada, in December, the average water temperature is 5.4°C (41.7°F). Swimming in 5.4°C (41.7°F) is considered dangerous. Unprotected immersion in temperatures below 10°C (50°F) causes quickly maximum intensity cold shock with hyperventilation.

What is the month with the shortest days in Greater Napanee?

December has the shortest days of the year, with an average of 8.9h of daylight.

What is the average length of the day in December in Greater Napanee?

In December, the average length of the day in Greater Napanee, Canada, is 8.9h.

Average sea temperature in December
Greater Napanee, Canada

Average sea temperature in December - Greater Napanee, Canada
  • Average sea temperature in December: 5.4°C

The best month for swimming (with the highest average sea temperature) is August (22.3°C).
The coldest month (with the lowest average sea temperature) is March (1.9°C).

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Average daylight in December
Greater Napanee, Canada

Average daylight in December - Greater Napanee, Canada
  • Average daylight in December: 8.9h

The month with the longest days is June (Average daylight: 15.5h).
The month with the shortest days is December (Average daylight: 8.9h).

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