Dartmouth
Canada
Long-term weather forecast
Long-term weather forecast

December weather forecast and climate
Dartmouth, Canada

Sea temperature

In December, the average sea temperature in Dartmouth, Canada, is 5.5°C (41.9°F).
Note: At temperatures below 10°C (50°F), 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 13°C (55.4°F) is not comfortable.

Daylight

The month with the shortest days in Dartmouth is December, with an average of 8.9h of daylight.

What is the water temperature in December in Dartmouth?

In Dartmouth, the average seawater temperature in December is 5.5°C (41.9°F). Swimming in 5.5°C (41.9°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.

What is the month with the shortest days in Dartmouth?

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

What is the average length of the day in December in Dartmouth?

In Dartmouth, Canada, the average length of the day in December is 8.9h.
Average sea temperature in December - Dartmouth, Canada
  • Average sea temperature in December: 5.5°C

The best month for swimming (with the highest average sea temperature) is August (17.2°C).
The coldest month (with the lowest average sea temperature) is February (0.8°C).

Average daylight in December - Dartmouth, Canada
  • Average daylight in December: 8.9h

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