Norway
Tromsø in August: weather, sea & travel advice
This month's data profile
Rain shapes the decision
Tromsø in August is climatically mixed. The average daily high is around 14 °C, and the sea is about 11 °C. With about 19 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
27/100 · #3
Warmth
#2
Dryness
#9
Sun
#4
Sea warmth
#1
Published best categories: none
Tromsø · AugustPhoto: Bernt Rostad from Oslo, Norway · CC BY 2.0Climate facts
- Average high
- 14 °C
- Average low
- 8 °C
- Sea
- 11 °C
- Rainy days (est.)
- 19 rainy days (est.)
- Sun (est.)
- 4 h/day
- Humidity
- 85 %
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 |
|---|---|---|---|---|---|---|---|---|---|
| July | 15 | 9 | 17 | 113 | 5.4 | 82 | 0.6 | 10 | 35 |
| August (selected) | 14 | 8 | 19 | 120 | 3.8 | 85 | 0.6 | 11 | 27 |
| September | 9 | 4 | 19 | 130 | 2.1 | 90 | 0.8 | 10 | 17 |
How do the previous and next months compare?
Baseline: August (27/100)
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 | |
|---|---|---|---|---|---|---|---|---|---|
| July | +8 | +1.4 °C | +0.9 °C | -1.6 | -7 mm | +1.6 h | -3.8 % | -0.1 m/s | -0.9 °C |
| September | -10 | -4.7 °C | -3.5 °C | -0.1 | +9.9 mm | -1.7 h | +4.5 % | +0.2 m/s | -1 °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 August?
The average daily high is around 14 °C, with an average daily low of about 8 °C.
Can you swim in Tromsø in August?
The sea is about 11 °C (cold).
Does it rain a lot in Tromsø in August?
The curated estimate is about 19 rainy days per month, not a directly measured long-term average. Total precipitation averages around 120 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.