Norway
Stavanger in September: weather, sea & travel advice
This month's data profile
Rain shapes the decision
Stavanger in September is climatically mixed. The average daily high is around 15 °C, and the sea is about 15 °C. With about 18 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
30/100 · #5
Warmth
#3
Dryness
#8
Sun
#6
Sea warmth
#2
Published best categories: none
Stavanger · SeptemberPhoto: jace48 · CC BY-SA 3.0Climate facts
- Average high
- 15 °C
- Average low
- 11 °C
- Sea
- 15 °C
- Rainy days (est.)
- 18 rainy days (est.)
- Sun (est.)
- 3 h/day
- Humidity
- 84 %
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 | 17 | 13 | 18 | 139 | 4.8 | 83 | 3.1 | 16 | 40 |
| September (selected) | 15 | 11 | 18 | 156 | 3.0 | 84 | 3.5 | 15 | 30 |
| October | 11 | 8 | 20 | 188 | 1.5 | 85 | 4.1 | 12 | 17 |
How do the previous and next months compare?
Baseline: September (30/100)
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 | +10 | +2.4 °C | +2 °C | ±0 | -16.5 mm | +1.8 h | -0.8 % | -0.5 m/s | +1.3 °C |
| October | -13 | -4.1 °C | -3.5 °C | +1.9 | +32.8 mm | -1.5 h | +1 % | +0.5 m/s | -2.7 °C |
All twelve months in context
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Useful next decisions
Frequently asked questions
How warm is Stavanger in September?
The average daily high is around 15 °C, with an average daily low of about 11 °C.
Can you swim in Stavanger in September?
The sea is about 15 °C (cold).
Does it rain a lot in Stavanger in September?
The curated estimate is about 18 rainy days per month, not a directly measured long-term average. Total precipitation averages around 156 mm for the month. A rainy day does not mean all-day rain.
When is the best time to visit Stavanger?
No month in Stavanger reaches the threshold for a clear recommendation in the climate score; the month comparison above shows the differences.