Norway
Bergen in September: weather, sea & travel advice
This month's data profile
Rain shapes the decision
Bergen in September is climatically mixed. The average daily high is around 13 °C, and the sea is about 15 °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
24/100 · #5
Warmth
#4
Dryness
#5
Sun
#6
Sea warmth
#3
Published best categories: none
Bergen · SeptemberPhoto: Smtunli · CC BY-SA 4.0Climate facts
- Average high
- 13 °C
- Average low
- 8 °C
- Sea
- 15 °C
- Rainy days (est.)
- 20 rainy days (est.)
- Sun (est.)
- 3 h/day
- Humidity
- 87 %
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 |
|---|---|---|---|---|---|---|---|---|---|
| August | 16 | 10 | 21 | 199 | 4.5 | 84 | 1.2 | 16 | 36 |
| September (selected) | 13 | 8 | 20 | 238 | 2.8 | 87 | 1.3 | 15 | 24 |
| October | 8 | 4 | 22 | 279 | 1.3 | 90 | 1.5 | 12 | 13 |
How do the previous and next months compare?
Baseline: September (24/100)
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 | |
|---|---|---|---|---|---|---|---|---|---|
| August | +12 | +3.3 °C | +2.5 °C | +0.5 | -39.1 mm | +1.7 h | -2.8 % | -0.2 m/s | +1.2 °C |
| October | -11 | -5.1 °C | -4 °C | +1.3 | +41.8 mm | -1.5 h | +2.9 % | +0.1 m/s | -2.4 °C |
All twelve months in context

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Useful next decisions
Frequently asked questions
How warm is Bergen in September?
The average daily high is around 13 °C, with an average daily low of about 8 °C.
Can you swim in Bergen in September?
The sea is about 15 °C (cold).
Does it rain a lot in Bergen in September?
The curated estimate is about 20 rainy days per month, not a directly measured long-term average. Total precipitation averages around 238 mm for the month. A rainy day does not mean all-day rain.
When is the best time to visit Bergen?
No month in Bergen reaches the threshold for a clear recommendation in the climate score; the month comparison above shows the differences.