Sweden
Stockholm in September: weather, sea & travel advice
This month's data profile
Strong month under the current formula
Stockholm in September is climatically well suited to city breaks and active holidays and hiking. The average daily high is around 16 °C, and the sea is about 14 °C. With about 10 rainy days it is wet.
Historical monthly averages, not a weather forecast. Individual days and years can differ substantially.
Rank among 12 monthly averages
48/100 · #4
Warmth
#4
Dryness
#5
Sun
#6
Sea warmth
#3
Published best categories: City break
Stockholm · SeptemberPhoto: Ad Meskens · CC BY-SA 4.0Climate facts
- Average high
- 16 °C
- Average low
- 9 °C
- Sea
- 14 °C
- Rainy days (est.)
- 10 rainy days (est.)
- Sun (est.)
- 3 h/day
- Humidity
- 82 %
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 | 21 | 13 | 14 | 73 | 5.5 | 77 | 0.9 | 17 | 61 |
| September (selected) | 16 | 9 | 10 | 59 | 3.4 | 82 | 1.0 | 14 | 48 |
| October | 10 | 4 | 12 | 64 | 1.5 | 89 | 1.0 | 10 | 26 |
How do the previous and next months compare?
Baseline: September (48/100)
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 | +13 | +4.8 °C | +4 °C | +3.4 | +13.7 mm | +2.1 h | -5.3 % | -0.1 m/s | +2.9 °C |
| October | -22 | -6.8 °C | -4.7 °C | +1.5 | +4.2 mm | -1.9 h | +7.3 % | ±0 m/s | -3.9 °C |
All twelve months in context
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Useful next decisions
Frequently asked questions
How warm is Stockholm in September?
The average daily high is around 16 °C, with an average daily low of about 9 °C.
Can you swim in Stockholm in September?
The sea is about 14 °C (cold).
Does it rain a lot in Stockholm in September?
The curated estimate is about 10 rainy days per month, not a directly measured long-term average. Total precipitation averages around 59 mm for the month. A rainy day does not mean all-day rain.
When is the best time to visit Stockholm?
By the climate score, July and August are the strongest months for Stockholm. September is not among them.