Norway
Tromsø in October: weather, sea & travel advice
This month's data profile
Rain shapes the decision
Tromsø in October is climatically mixed. The average daily high is around 3 °C, and the sea is about 9 °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
10/100 · #9
Warmth
#6
Dryness
#12
Sun
#8
Sea warmth
#4
Published best categories: none
Tromsø · OctoberPhoto: Bernt Rostad from Oslo, Norway · CC BY 2.0Climate facts
- Average high
- 3 °C
- Average low
- -1 °C
- Sea
- 9 °C
- Rainy days (est.)
- 20 rainy days (est.)
- Sun (est.)
- 1 h/day
- Humidity
- 95 %
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 | 9 | 4 | 19 | 130 | 2.1 | 90 | 0.8 | 10 | 17 |
| October (selected) | 3 | -1 | 20 | 134 | 0.7 | 95 | 1.1 | 9 | 10 |
| November | -2 | -6 | 18 | 112 | 0.1 | 96 | 1.6 | 7 | 10 |
How do the previous and next months compare?
Baseline: October (10/100)
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 | +7 | +6.8 °C | +5.4 °C | -0.8 | -3.7 mm | +1.4 h | -4.8 % | -0.3 m/s | +1.4 °C |
| November | ±0 | -4.3 °C | -4.6 °C | -1.6 | -21.3 mm | -0.6 h | +1.2 % | +0.6 m/s | -1.3 °C |
All twelve months in context
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Where to stay in Tromsø
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Useful next decisions
Frequently asked questions
How warm is Tromsø in October?
The average daily high is around 3 °C, with an average daily low of about -1 °C.
Can you swim in Tromsø in October?
The sea is about 9 °C (cold).
Does it rain a lot in Tromsø in October?
The curated estimate is about 20 rainy days per month, not a directly measured long-term average. Total precipitation averages around 134 mm for the month. A rainy day does not mean all-day rain.
When is the best time to visit Tromsø?
No month in Tromsø reaches the threshold for a clear recommendation in the climate score; the month comparison above shows the differences.