Finland weather
Our guide to the weather in Finland during September
We've looked at the most up-to-date weather data for Finland, covering the last 12 years up to 2024, plus we've asked our team of travel bloggers for their first-hand experiences in order to answer the most frequently asked questions about Finland weather in September.
What's the temperature like in Finland during September?
The temperature reaches around 13℃ during the daytime in September, falling away to 6℃ at night. The UV index will be low at this time of year, so not something to worry about. However, if you're going to be outside for long periods it's always a good idea to apply a small amount of sunscreen to exposed skin.
Does it rain in Finland during September?
On average, there will be 5 rainy days during the month, amounting to 64.6mm in total. That's broadly comparable with the amount of rain we see in England during the summer months, and would be considered dry. There's a small chance that you'll catch a thunderstorm during your trip.
Is it windy in Finland during September?
You're unlikely to experience any strong winds. Expect a light breeze that picks up slightly at times in September. With moderate air temperatures, any breeze will feel cool.
Weather in Finland
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