Mikkeli weather in September 2025

The temperatures in Mikkeli in September are quite cold with temperatures between 8°C and 14°C, warm clothes are a must.

You can expect about 3 to 8 days of rain in Mikkeli during the month of September. It’s a good idea to bring along your umbrella so that you don’t get caught in poor weather.

Our weather forecast can give you a great sense of what weather to expect in Mikkeli in September 2025.

If you’re planning to visit Mikkeli in the near future, we highly recommend that you review the 14 day weather forecast for Mikkeli before you arrive.

Temperatures

14° / 8°

Rainy Days

Snowy Days

Dry Days

Rainfall

Sun Hours

7.9

Hrs

Sun	Mon	Tue	Wed	Thu	Fri	Sat
	1 16° /9°	2 16° /7°	3 16° /7°	4 15° /8°	5 17° /7°	6 17° /7°
7 16° /7°	8 19° /10°	9 18° /9°	10 20° /8°	11 18° /10°	12 19° /10°	13 16° /11°
14 13° /9°	15 13° /7°	16 15° /7°	17 14° /7°	18 14° /6°	19 14° /7°	20 12° /7°
21 12° /5°	22 13° /5°	23 11° /3°	24 14° /8°	25 12° /7°	26 14° /8°	27 13° /6°
28 14° /7°	29 12° /6°	30 10° /5°

Explore the weather in Mikkeli in other months

Mikkeli annual weather

Month	Temperatures	Rainy Days	Dry Days	Snowy Days	Rainfall	Weather	More details
January	-6° / -9°	4	3	26	69 mm	Awful	Mikkeli in January
February	-4° / -9°	3	3	23	58 mm	Awful	Mikkeli in February
March	-1° / -6°	5	5	22	56 mm	Awful	Mikkeli in March
April	6° / -1°	6	12	13	55 mm	Awful	Mikkeli in April
May	15° / 6°	6	23	2	66 mm	Ok	Mikkeli in May
June	19° / 10°	6	24	0	75 mm	Good	Mikkeli in June
July	22° / 13°	6	25	0	94 mm	Good	Mikkeli in July
August	20° / 12°	6	25	0	86 mm	Good	Mikkeli in August
September	14° / 8°	6	24	0	79 mm	Good	Mikkeli in September
October	7° / 2°	8	15	7	83 mm	Awful	Mikkeli in October
November	2° / -1°	8	9	14	76 mm	Awful	Mikkeli in November
December	-3° / -6°	6	3	24	76 mm	Awful	Mikkeli in December