Climate averages 1991–2020
Trondheim weather
in October.
A cold, moderately wet month: the joint 6th warmest and the 6th driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
October is a cold month in Trondheim: daytime highs average 7.8°C and nights cool to about 2.2°C. By daytime temperature it is the joint 6th warmest of the 12 months.
Expect about 87 mm of rain on roughly 15 days, which makes October a moderately wet month (the 6th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 9 h 55 min on an average October day.
The nearest other city in this atlas is Lillestrøm (388 km away). In October its highs average 8.5°C, 0.6°C warmer than Trondheim, with 84 mm of rain.
Among the 8 cities listed in Norway, Trondheim ranks 8th of 8 for the warmest October highs and joint 2nd of 8 for the driest October (rainfall, lowest first). The mean October high of those 8 cities is 9.4°C; Trondheim is 1.6°C cooler than that mean.
From October to November, average highs fall by 5.5°C to 2.3°C, and monthly rainfall falls from 87 mm to 79 mm.
The annual picture
October in context
Monthly precipitation
Average total · mmAverages from hourly ERA5 reanalysis data. Actual weather varies from year to year. How these numbers are calculated
Every month, side by side
Trondheim climate table
| Month | Average highHigh / low | Average low | Precipitation mm/month | Wet days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | -1.1°C-6.1°C | -6.1°C | 96 | 16.0 | 5.86 h |
| February | -0.5°C-6.1°C | -6.1°C | 86 | 14.5 | 8.69 h |
| March | 2.9°C-3.8°C | -3.8°C | 88 | 15.4 | 11.712 h |
| April | 7.8°C-0.4°C | -0.4°C | 67 | 13.6 | 14.915 h |
| May | 12.5°C3.8°C | 3.8°C | 70 | 15.6 | 18.118 h |
| June | 15.9°C8.1°C | 8.1°C | 95 | 15.6 | 20.320 h |
| July | 18.6°C10.8°C | 10.8°C | 85 | 14.8 | 19.319 h |
| August | 17.9°C10.6°C | 10.6°C | 99 | 14.9 | 16.316 h |
| September | 14.0°C7.3°C | 7.3°C | 102 | 14.8 | 13.113 h |
| October, selected | 7.8°C2.2°C | 2.2°C | 87 | 15.2 | 9.910 h |
| November | 2.3°C-2.4°C | -2.4°C | 79 | 13.2 | 6.87 h |
| December | -0.6°C-5.7°C | -5.7°C | 94 | 15.3 | 4.85 h |
Precipitation (rain or snow, as water) is the average of the 30 separate monthly totals. A wet day is a local calendar day with at least 1 mm of precipitation. Daylight is the calculated sunrise-to-sunset length, not measured sunshine.
Compare places
October in nearby cities
- Lillestrøm in OctoberNorway · 388 kmHigh 8.5°C · Low 3.8°C · 84 mm rain
- Oslo in OctoberNorway · 392 kmHigh 9.0°C · Low 4.6°C · 94 mm rain
- Drammen in OctoberNorway · 410 kmHigh 9.4°C · Low 4.8°C · 98 mm rain
- Bergen in OctoberNorway · 429 kmHigh 9.7°C · Low 5.1°C · 259 mm rain
- Gävle in OctoberSweden · 466 kmHigh 8.7°C · Low 4.2°C · 55 mm rain
- Fredrikstad in OctoberNorway · 469 kmHigh 10.0°C · Low 6.0°C · 87 mm rain
- Umeå in OctoberSweden · 489 kmHigh 6.3°C · Low 2.7°C · 72 mm rain
- Örebro in OctoberSweden · 528 kmHigh 9.1°C · Low 4.6°C · 56 mm rain
Read the numbers correctly
Climate, not a promise.
These patterns help compare months. They cannot tell you the weather on a specific day of your trip.
Sources, method and limitsHow these numbers are made (what the highs, lows and rain days mean, the sources and the model cell used for Trondheim) is explained once on the Trondheim year overview and on the Sources, method and limits page.