ClimateAverages

Helsinki Weather in September

JanFebMarAprMayJunJulAugSepOctNovDec
Right now
15°C
Light rain · feels like 15°C
Humidity
94%
Wind
14 kph ENE
UV
3.1
Rain
0%
Updated Jul 9, 02:45 PMWeather data by WeatherAPI.com
September daytime high
14.1°C
September overnight low
8.7°C
September average
11.5°C

In September, Helsinki typically sees daytime highs of 14.1°C and overnight lows around 8.7°C. Compared to the annual average high of 7.7°C, September runs +6.4°C.

vs. annual avg high
+6.4°C
Rank among 12 months
#4 warmest
Hottest year overall
2024

Where September ranks in Helsinki

JanFebMarAprMayJunJulAugSep14°OctNovDec

FAQ

What is the average temperature in Helsinki in September?

September in Helsinki averages a daytime high of 14.1°C and an overnight low of 8.7°C.

Is September warm or cold in Helsinki?

September runs +6.4°C compared to Helsinki's annual average high of 7.7°C, ranking #4 of 12 months by warmth.

What should I pack for Helsinki in September?

Plan for daytime highs near 14.1°C and cooler evenings around 8.7°C.

Other months for Helsinki

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September in nearby cities

EspooVantaa