Siilinjärvi Weather in September

During September, Siilinjärvi experiences moderate daytime temperatures of 15°C (59°F) and cooler nights around 7°C (45°F). Expect quite a bit of rainfall. Around 74 mm (2.9 in) is typical.

Rainfall in Siilinjärvi in September

Rain is expected on roughly 17 days, totalling around 74 mm (2.9 in) for the month. This is a month with many wet days but modest rainfall totals, so showers are generally light and easy to manage.

Temperature in Siilinjärvi in September

September in Siilinjärvi brings typical temperatures with highs around 15°C (59°F) and lows of 7°C (45°F). This creates a mild day-to-night pattern that is generally easy to manage with the right clothing. Nights drop to 7°C (45°F). Cold nights like these are actually great for sleeping well, as long as you have a warm enough duvet.

If you prefer enjoying temperate temperatures and rain-free days, June, July and August typically offer the best circumstances. If you're seeking pleasant, dry and sunny weather somewhere else in the world, our weather planner can help you explore other options.

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• January
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For a detailed overview over the year and the best time to visit Finland, check out our Siilinjärvi's climate page.

Siilinjärvi Temperature in September

Min Temperature 7°C (45°F)  

Max Temperature 15°C (59°F)  

Chance of Rain 58%  

Precipitation 74 mm (2.9 in)  

Rainy days 17 days  

What to Wear in Siilinjärvi in September

The weather can be unpredictable in September, so pack clothes you can easily mix and match. You could bring jeans, other long pants, and a few t-shirts. A light jacket or light sweater will be pleasant for the cooler moments. Rain is likely on several days, so bring a good rain jacket.

What To Do in Siilinjärvi in September

We rated the following activities from 1 (least suitable) to 10 (best) to do.

Cycling

6/10

Walking

6/10

Barbeque

5/10

Camping

4/10

Outdoor sports

9/10

Select a Month

Check the conditions for any month of the year.

• January
• February
• March
• April

• May
• June
• July
• August

• September
• October
• November
• December

For a detailed overview over the year and the best time to visit Finland, check out our Siilinjärvi's climate page.

More climate data for Siilinjärvi

Temperature Rainfall

See the full Siilinjärvi climate overview or explore weather in Finland.