Alnmouth
United Kingdom
Long-term weather forecast
Long-term weather forecast

December weather forecast and climate
Alnmouth, United Kingdom

Sea temperature

In Alnmouth, United Kingdom, in December, the average water temperature is 9.2°C (48.6°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

With an average of 7.2h of daylight, December has the shortest days of the year in Alnmouth.

What is the water temperature in December in Alnmouth?

In December, the average sea temperature in Alnmouth is 9.2°C (48.6°F). Swimming in 9.2°C (48.6°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 Alnmouth?

With an average of 7.2h of daylight, December has the shortest days of the year in Alnmouth, United Kingdom.

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

In Alnmouth, the average length of the day in December is 7.2h.
Average sea temperature in December - Alnmouth, United Kingdom
  • Average sea temperature in December: 9.2°C

The best month for swimming (with the highest average sea temperature) is August (15.3°C).
The coldest month (with the lowest average sea temperature) is March (6.7°C).

Average daylight in December - Alnmouth, United Kingdom
  • Average daylight in December: 7.2h

The month with the longest days is June (Average daylight: 17.4h).
The month with shortest days is December (Average daylight: 7.2h).