Trondheim
Norway
Long-term weather forecast
Long-term weather forecast

January weather forecast and climate
Trondheim, Norway

January, the same as December, is another cold winter month in Trondheim, Norway, with average temperature varying between 0°C (32°F) and -5°C (23°F).

Temperature

January and February, with an average high-temperature of 0°C (32°F), are the coldest months.

Rainfall

In Trondheim, in January, during 22 rainfall days, 100mm (3.9") of precipitation is typically accumulated. In Trondheim, during the entire year, the rain falls for 239 days and collects up to 1096mm (43.1") of precipitation.

Sea temperature

In January, the average sea temperature in Trondheim is 6.1°C (43°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

In Trondheim, the average length of the day is 5.9h.

Sunshine

January and December, with an average of 0h of sunshine, are months with the least sunshine in Trondheim.

UV index

Months with the lowest UV index are January, February, November and December, with an average maximum UV index of 0. A UV Index of 2, and less, symbolizes a low health risk from the exposure to the Sun's UV radiation for average individuals.
Note: In January, the average maximum UV index of 0 translate into the following recommendations:
People with sensitive skin, children, and babies should always be protected from prolonged sun exposure. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes.

What are the coldest months in Trondheim?

The coldest months in Trondheim, Norway, are January and February, with an average high-temperature of 0°C (32°F).

What is the temperature in January in Trondheim?

The average high-temperature, in January, in Trondheim, is 0°C (32°F), while the average low-temperature is -5°C (23°F).

How much does it rain in Trondheim in January?

In Trondheim, Norway, during January, the rain falls for 22 days and regularly aggregates up to 100mm (3.9") of precipitation.

How cold is the water in January in Trondheim?

In January, the average sea temperature in Trondheim is 6.1°C (43°F). 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.

What is the average length of the day in January in Trondheim?

In January, the average length of the day in Trondheim is 5.9h.

What is the month with the least sunshine in Trondheim?

Months with the least sunshine in Trondheim are January and December, with an average of 0h of sunshine.

How many hours of sunshine does Trondheim have in January?

In Trondheim, Norway, the average sunshine in January is 0h.

What is the month with the lowest UV index in Trondheim?

Months with the lowest UV index in Trondheim, Norway, are January, February, November and December, with an average maximum UV index of 0.

How high is the UV index in January in Trondheim?

In January, the average daily maximum UV index in Trondheim is 0. A UV Index estimate of 2, and below, represents a low health threat from the exposure to the Sun's UV radiation.
Average temperature in January - Trondheim, Norway
  • Average high temperature in January: 0°C

The warmest month (with the highest average high temperature) is August (17°C).
Months with the lowest average high temperature are January and February (0°C).

  • Average low temperature in January: -5°C

Months with the highest average low temperature are July and August (9°C).
Coldest months (with the lowest average low temperature) are January and February (-5°C).

Average rainfall in January - Trondheim, Norway
  • Average rainfall in January: 100mm

The wettest month (with the highest rainfall) is September (133mm).
The driest month (with the lowest rainfall) is May (53mm).

Average rainfall days in January - Trondheim, Norway
  • Average rainfall days in January: 22 days

Months with the highest number of rainy days are September and December (24 days).
The month with the lowest number of rainy days is May (15 days).

Average sea temperature in January - Trondheim, Norway
  • Average sea temperature in January: 6.1°C

The best month for swimming (with the highest average sea temperature) is August (14.8°C).
The coldest month (with the lowest average sea temperature) is March (4.9°C).

Average daylight in January / Average sunshine in January - Trondheim, Norway
  • Average daylight in January: 5.9h

The month with the longest days is June (Average daylight: 20.4h).
The month with shortest days is December (Average daylight: 4.7h).

  • Average sunshine in January: 0h

Months with most sunshine are May and June (Average sunshine: 7h).
Months with least sunshine are January and December (Average sunshine: 0).

Average UV index in January - Trondheim, Norway
  • Average UV index in January: 0

Months with the highest UV index are June and July (UV index 4).
Months with the lowest UV index are January, February, November and December (UV index 0).