January weather forecast
Trondheim, Norway

January in Trondheim, Norway, ushers in a new year with the lowest temperatures of the year, ranging from a frigid -5°C (23°F) to a high of 0°C (32°F). The days are short and often quite dark, with daylight hours struggling to surpass the 6-hour mark, contributing to the chilly temperatures. Weather conditions remain largely consistent with December, with cold temperatures and relatively high rainfall. As the month progresses, the weather conditions remain consistent. Despite winter's frosty grip, life in Trondheim does not come to a halt, with residents embracing the colder months through various winter activities.

Temperature

The months of January and February see the lowest levels of Trondheim's temperatures, averaging a high of 0°C (32°F).

Rainfall

In Trondheim, in January, during 22 rainfall days, 100mm (3.94") of precipitation is typically accumulated. Throughout the year, there are 239 rainfall days, and 1096mm (43.15") of precipitation is accumulated.

Sea temperature

In Trondheim, the average seawater temperature in January is 6.1°C (43°F).
Note: Beware when you're in 6.1°C (43°F) waters; 13°C (55.4°F) is chilling and anything below 10°C (50°F) could cause breathing hindrance and a sudden cold shock, given your physical condition.

Daylight

In January, the average length of the day in Trondheim is 5h and 51min.
On the first day of January, sunrise is at 09:59 and sunset at 14:44. On the last day of the month, sunrise is at 08:57 and sunset at 16:06 CET.

Sunshine

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

UV index

January, February, November and December, with an average maximum UV index of 0, are months with the lowest UV index in Trondheim. A UV Index value of 2, and less, symbolizes a minimal health hazard from exposure to the Sun's UV radiation for the ordinary person.
Note: A typical high UV index of 0 in January suggests the following recommendations:
Most people can stay in the Sun for up to 1 hour without burning, apart from children that always must be protected from sun exposure. Limiting exposure to the direct Sun during midday hours can help prevent harmful UV radiation effects. Prioritize a wide-brim hat for comprehensive sun defense for your face, neck, eyes, and ears.