Norway
Trondheim in October: weather, sea & travel advice
This month's data profile
Rain shapes the decision
Trondheim in October is climatically mixed. The average daily high is around 7 °C, and the sea is about 11 °C. With about 20 rainy days it is very wet.
Historical monthly averages, not a weather forecast. Individual days and years can differ substantially.
Rank among 12 monthly averages
13/100 · #7
Warmth
#6
Dryness
#7
Sun
#8
Sea warmth
#4
Published best categories: none
Trondheim · OctoberPhoto: David Stanley from Nanaimo, Canada · CC BY 4.0Climate facts
- Average high
- 7 °C
- Average low
- 2 °C
- Sea
- 11 °C
- Rainy days (est.)
- 20 rainy days (est.)
- Sun (est.)
- 1 h/day
- Humidity
- 92 %
Climate evidence with direct month comparison
The highlighted row is the selected month. Precipitation total and rainy days are separate monthly averages.
| Month | Avg high °C | Avg low °C | Rainy days (est.) | Precipitation mm | Sun h/day (est.) | Humidity % | Wind m/s | Sea °C | Score |
|---|---|---|---|---|---|---|---|---|---|
| September | 13 | 7 | 18 | 136 | 2.7 | 88 | 0.7 | 13 | 25 |
| October (selected) | 7 | 2 | 20 | 136 | 1.2 | 92 | 0.8 | 11 | 13 |
| November | 1 | -2 | 17 | 116 | 0.3 | 95 | 1.1 | 9 | 12 |
How do the previous and next months compare?
Baseline: October (13/100)
Positive and negative values show the change from the selected month.
| Score Δ | Average high Δ | Average low Δ | Rainy days Δ | Rain Δ | Sun Δ | Humidity Δ | Wind Δ | Sea Δ | |
|---|---|---|---|---|---|---|---|---|---|
| September | +12 | +6.1 °C | +4.6 °C | -2 | +0.1 mm | +1.5 h | -4.1 % | -0.1 m/s | +1.9 °C |
| November | -1 | -5.3 °C | -4.3 °C | -2.5 | -20.4 mm | -0.9 h | +2.6 % | +0.3 m/s | -2.1 °C |
All twelve months in context
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Where to stay in Trondheim
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Useful next decisions
Frequently asked questions
How warm is Trondheim in October?
The average daily high is around 7 °C, with an average daily low of about 2 °C.
Can you swim in Trondheim in October?
The sea is about 11 °C (cold).
Does it rain a lot in Trondheim in October?
The curated estimate is about 20 rainy days per month, not a directly measured long-term average. Total precipitation averages around 136 mm for the month. A rainy day does not mean all-day rain.
When is the best time to visit Trondheim?
No month in Trondheim reaches the threshold for a clear recommendation in the climate score; the month comparison above shows the differences.