Iisalmi Weather in September

September in Iisalmi averages 14°C (57°F) during the day and 6°C (43°F) at night. Quite a bit of rainfall is typical this month, with around 72 mm (2.8 in) on average. An umbrella is a good idea.

Rainfall in Iisalmi in September

Historically, the month has about 18 days of rain, averaging 72 mm (2.8 in) in total. Rain falls on many days this month, but usually in relatively small amounts. A light waterproof is more useful than a heavy umbrella.

Temperature in Iisalmi in September

Daytime temperatures in Iisalmi reach 14°C (57°F) in September, dropping to 6°C (43°F) at night. Conditions are often most pleasant around the middle of the day. With overnight lows of 6°C (43°F), nights are cold. The cold air does make for deep, comfortable sleep if you have enough blankets.

If you prefer enjoying temperate temperatures and rain-free days, June 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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For a detailed overview over the year and the best time to visit Finland, check out our Iisalmi's climate page.

Iisalmi Temperature in September

Min Temperature 6°C (43°F)  

Max Temperature 14°C (57°F)  

Chance of Rain 59%  

Precipitation 72 mm (2.8 in)  

Rainy days 18 days  

What to Wear in Iisalmi 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 Iisalmi 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 Iisalmi's climate page.

More climate data for Iisalmi

Temperature Rainfall

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