Table below will help you to find the best place for your vacation in Finland in September. Find the place with less rains and more sun. We also provide information about sea water temperature for marine resort.

Place name	Air temp day / night		Cloudiness	Rainy days (precipitation)	Sunny hours
Espoo	59.7°F	50.4°F	45.8%	-	7 h. 58 min.
Hameenlinna	59.5°F	47.9°F	53.9%	-	6 h. 56 min.
Helsinki	59.1°F	51.3°F	45.8%	-	7 h. 58 min.
Imatra	58.8°F	49.1°F	61.7%	3 days (1.5 in.)	5 h. 57 min.
Joensuu	56.0°F	48.6°F	65.4%	2 days (1.0 in.)	5 h. 29 min.
Juvaskyla	57.0°F	47.5°F	60.8%	1 day (0.6 in.)	6 h. 4 min.
Kemi	53.1°F	49.7°F	63.0%	-	5 h. 50 min.
Koli National Park	54.4°F	48.7°F	67.1%	2 days (1.0 in.)	5 h. 16 min.
Kotka	57.8°F	54.5°F	47.5%	1 day (0.7 in.)	7 h. 45 min.
Kouvola	59.3°F	49.2°F	53.0%	-	7 h. 3 min.
Kuopio	55.9°F	49.7°F	61.7%	1 day (0.8 in.)	5 h. 57 min.
Lahti	59.3°F	48.9°F	52.3%	-	7 h. 8 min.
Lappeenranta	58.4°F	49.8°F	58.1%	1 day (0.9 in.)	6 h. 24 min.
Levi	50.4°F	43.3°F	74.9%	2 days (1.3 in.)	4 h. 19 min.
Mikkeli	56.8°F	49.2°F	57.0%	2 days (0.9 in.)	6 h. 33 min.
Oulu	54.7°F	48.4°F	63.5%	-	5 h. 45 min.
Pori	58.5°F	50.9°F	48.6%	1 day (0.6 in.)	7 h. 37 min.
Porvoo	58.1°F	54.1°F	46.6%	-	7 h. 52 min.
Rovaniemi	51.5°F	44.4°F	73.8%	2 days (1.2 in.)	4 h. 26 min.
Ruka	51.4°F	44.9°F	78.1%	1 day (0.8 in.)	3 h. 52 min.
Saariselka	48.7°F	42.5°F	76.7%	3 days (1.3 in.)	4 h. 5 min.
Savolinna	57.1°F	48.8°F	63.3%	1 day (0.8 in.)	5 h. 45 min.
Seinajoki	57.3°F	47.4°F	60.3%	-	6 h. 8 min.
Tahko	54.9°F	46.4°F	68.0%	1 day (0.8 in.)	5 h. 9 min.
Tampere	58.8°F	47.8°F	56.9%	-	6 h. 34 min.
Turku	59.3°F	51.1°F	45.8%	-	7 h. 59 min.
Vaasa	56.0°F	51.9°F	56.4%	-	6 h. 39 min.
Vantaa	59.7°F	49.6°F	47.4%	-	7 h. 46 min.
Vuokatti	54.2°F	46.4°F	72.7%	1 day (0.7 in.)	4 h. 33 min.

* Sunny hours are calculated based on the average daily number of hours while sunlight can reach the ground. It depends on day length and cloudiness during the day.

Winter weather

Spring weather

Summer weather

Autumn weather

Name

°F

Vaasa