Trondheim
63.44° N, 10.40° E
When to go?
Mean −2 °C, 16 rain days in the month (95 mm).
Against
- Freezinglows of −4 °C
- Dark5.7 hours of daylight
Mean −2 °C, 14 rain days in the month (80 mm).
Good for
- Ideal for skiingSnow on the ground: 48 cm on average in the month.
Against
- Freezinglows of −4 °C
Mean 1 °C, 15 rain days in the month (82 mm).
Good for
- Ideal for skiingSnow on the ground: 49 cm on average in the month.
- Ideal for the auroraNights of 12 hours and the sky 72 % covered on average: clearer than the average of aurora places.
Mean 4 °C, 13 rain days in the month (57 mm).
Nothing against it.
Mean 9 °C, 14 rain days in the month (55 mm).
Nothing against it.
Mean 12 °C, 14 rain days in the month (71 mm).
Nothing against it.
Mean 14 °C, 14 rain days in the month (72 mm).
The least cold month of the year.
Mean 14 °C, 15 rain days in the month (92 mm).
The least cold month of the year.
Mean 10 °C, 16 rain days in the month (106 mm).
Against
- Often rainyrain on 5 days in 10
Mean 6 °C, 16 rain days in the month (102 mm).
Good for
- Ideal for the auroraNights of 14 hours and the sky 74 % covered on average: clearer than the average of aurora places.
Against
- Often rainyrain on 5 days in 10
Mean 1 °C, 14 rain days in the month (91 mm).
Good for
- Ideal for the auroraNights of 17 hours and the sky 74 % covered on average: clearer than the average of aurora places.
Against
- Dark6.8 hours of daylight
Mean −1 °C, 15 rain days in the month (103 mm).
Against
- Freezinglows of −4 °C
- Often rainyrain on 5 days in 10
- Dark4.6 hours of daylight
No ideal month: the best months are July–August, the least cold. Nothing against March–June either. Ideal for skiing: February–March (snow on the ground, at least 40 cm). Ideal for the aurora: March, October–November (long nights, often clear sky). Avoid December–January (freezing and dark, at times often rainy), September (often rainy).
What is the climate like?
Temperature and rain
Monthly min and max temperature (°C)
Monthly min and max temperature (°C)
How much it rains
Rain days and how much water
Rain days and how much water
Bars: length = rain days, thickness = mm on a rain day, area = the month's rain. 3 mm a day7 mm a day15 mm a day
Colour = the month's rain: 103060100160250400mm
Daylight hours
Daylight and sky: sunrise, sunset and cloud cover
daylight under a clear sky (average share)daylight under cloud
daylight under a clear sky (average share)daylight under cloud
Times on the 15th of each month, in local time: daylight saving where and when it applies, standard time in the other months.
Sea temperature: Trondheimsfjord
Monthly mean sea temperature: Trondheimsfjord (°C)
Monthly mean sea temperature: Trondheimsfjord (°C)
Snow on the ground
Mean snow depth on the ground (cm)
Mean snow depth on the ground (cm)
Effect of climate change
Today's climate (1996–2025) compared with 1961–1990:
In short
Year by year
Temperature of each year
Against 1961–1990 the mean temperature of today (1996–2025) has changed by +1.5 °C; in the last ten years by +1.8 °C. Warmest year: 2025 (+3.1 °C), coldest: 1966 (−2.1 °C).
January and February warmed the most (+3.0 and +2.1 °C), June the least (+0.4 °C). The warm season (above the annual mean of then, 4 °C) begins 11 days earlier and ends 4 days later.
Warming stripes: after an idea by Ed Hawkins (University of Reading), showyourstripes.info, CC BY 4.0.
Rain of each year (% against 1961–1990)
more rain than in 1961–1990less rain
Rain in a year: +2 % every ten years.
The sea, then and now
+0.6 °Cthe sea today, compared with 1961–1990
Snow, then and now
−36 %winter snow today, compared with 1961–1990