Weather in Helsinki in September
The weather is near-perfect with ideal temperatures and minimal rain. Recommended month to visit.
Climate Overview
September is an excellent time to visit Helsinki. Helsinki has a Cool climate with average yearly highs of 16°C, lows of 11°C, and approximately 13 rainy days per month.
16°C
11°C
13days
13h
Is September a good time to visit Helsinki?
The weather is near-perfect with ideal temperatures and minimal rain.
Daylight
6:48 AM
7:45 PM
Weather by Month
| Month | High | Low | Rainy days | Condition |
|---|---|---|---|---|
| January | 4°C | 0°C | 15 | Wet |
| February | 3°C | -1°C | 12 | Good |
| March | 4°C | -1°C | 11 | Good |
| April | 8°C | 0°C | 10 | Good |
| May | 12°C | 5°C | 12 | Excellent (best) |
| June | 20°C | 13°C | 9 | Excellent (best) |
| July | 19°C | 13°C | 16 | Excellent (best) |
| August | 20°C | 13°C | 12 | Excellent (best) |
| September | 16°C | 11°C | 13 | Excellent (best) |
| October | 11°C | 7°C | 16 | Wet |
| November | 7°C | 3°C | 17 | Wet |
| December | 3°C | 0°C | 13 | Wet |
Weather data: Open-Meteo Archive (2020-2025) • Open-Meteo.com (CC BY 4.0) • Historical avg. 2020–2025
What to Pack for September
Layers, a light jacket, comfortable walking shoes, and an umbrella.
Planning a trip to Helsinki?
Common Questions
Is September a good time to visit Helsinki? +
September is typically Excellent for visiting Helsinki, with average highs of 16°C and around 13 rainy days.
What should I pack for Helsinki in September? +
With highs of 16°C and lows of 11°C in {month}, we recommend: Layers, a light jacket, comfortable walking shoes, and an umbrella.
Does it rain a lot in Helsinki in September? +
Helsinki typically sees around 13 rainy days in September.
How many hours of daylight are there in Helsinki in September? +
In September, Helsinki gets approximately 13 hours of daylight per day.
Is September peak season in Helsinki? +
Yes, September is peak season in Helsinki. Expect higher prices and more crowds, but also the best weather.
What is the best month to visit Helsinki? +
The best months to visit Helsinki are May, June, July, August, September, when the weather is optimal for sightseeing.
More Helsinki Guides
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Overview
Complete travel guide for Helsinki: top things to do, itineraries, and typical costs.