Measurements:
°C
°F
CURRENT WEATHER
00:29
Vaasa
58°F
N 12 mph
Feels like: 56°F
Precip: 38%
World Resorts Finland Vaasa Weather

7 Day Weather Forecast

09.09
wed
DAY
58°F
N 10 mph
precip
49%
NIGHT
54°F
SW 1 mph
precip
36%
09.10
thu
DAY
54°F
NE 16 mph
precip
27%
NIGHT
52°F
SE 13 mph
precip
61%
09.11
fri
DAY
58°F
S 7 mph
precip
13%
NIGHT
50°F
N 8 mph
precip
30%
09.12
sat
DAY
52°F
NE 1 mph
precip
14%
NIGHT
52°F
N 7 mph
precip
24%
09.13
sun
DAY
60°F
N 6 mph
precip
10%
NIGHT
54°F
NE 4 mph
precip
37%
09.14
mon
DAY
56°F
SE 5 mph
precip
5%
NIGHT
48°F
N 6 mph
precip
25%
09.15
tue
DAY
56°F
N 8 mph
precip
18%
NIGHT
52°F
SW 5 mph
precip
38%

Vaasa Sea Water Temperature in September, °F

Select Year: 2025 2024 2023

The average sea surface temperature in September 2025 for Vaasa was 14.3°F. The maximum and minimum values were 10.7°F and 16.6°F respectively.

Vaasa on the Weather Map

Best Time to Visit Vaasa
The most sunny months:
June 14 days
July 14 days
May 13 days
The most warm months:
July 66.1 °F
August 65.1 °F
June 58.4 °F
Warmest sea temperature:
August 64.8 °F
July 64.7 °F
September 57.1 °F
The most cold months:
January 22.7 °F
February 23.7 °F
December 29.5 °F
The most rainy months:
August 5 days
July 4 days
October 4 days
The most windy months:
December 12 mph
November 12 mph
October 12 mph
more details