All data are in degrees Fahrenheit

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Water temperature in Vaasa

Detailed information about the current water temperature in Vaasa. The trend over the last two weeks, daily averages, and precise forecast of the water temperature changes. Gain a deeper understanding of seasonal dynamics with monthly statistical analyses covering recent years.
Sea temperature in Vaasa now

44.9

°F

May 6, 14:32

Trend:

increasing

Yesterday:

41.0°F

Tomorrow:

45.5°F

Sunrise:

04:58

Sunset:

22:03

Day Length:

17 h. 5 min.

Vaasa in May

Minimum:

32.0°F

Average:

32.0°F

Maximum:

32.0°F

Sea water temperature in Vaasa today

As of now, in Vaasa, the water temperature is 44.9°F. Swimming in water of this temperature is considered as extremely cold, and there's a substantial risk of hypothermia if exposed for more than a brief duration. Today's reading is 4.0°F higher than the average recorded on this particular day in recent years. Since yesterday, there was a noticeable increase in temperature. This indicates a warming trend over the past day. According to the forecast, we expect the temperature to rise a bit.

Recent sea temperature and forecast

Today's water temperature is notably higher than the average recorded over the past two weeks, indicating a significant warming trend. It is also close to the historical maximum temperature for this date. The maximum temperature recorded for this date was 43.7°F on 2020, while the historical minimum was 38.3°F on 2018.

The water temperature over the last two weeks displayed soome variability. While the two week average stayed close to the historical average, there were some days when the temperature was close to the maximum recorded over the past years. The forecast for the upcoming week suggests a gradual increase. The average temperature is expected to rise up to 46.9°F, with minimum temperature starting at 45.5°F, while the maximum might reach 48.7°F.

Daily water temperature in Vaasa

Date Current Year

actual* / forecast**

last year 10 years average
Apr 22 44.1°F 40.1°F 36.7°F
Apr 23 43.3°F 39.4°F 36.6°F
Apr 24 43.9°F 39.8°F 36.8°F
Apr 25 38.7°F 38.9°F 36.5°F
Apr 26 38.2°F 39.1°F 36.7°F
Apr 27 38.0°F 40.6°F 36.7°F
Apr 28 41.4°F 39.2°F 36.9°F
Apr 29 40.3°F 39.9°F 37.0°F
Apr 30 36.2°F 39.8°F 36.9°F
May 1 39.1°F 40.4°F 38.0°F
May 2 39.6°F 42.2°F 38.7°F
May 3 36.6°F 42.1°F 39.1°F
May 4 39.7°F 43.1°F 39.6°F
May 5 41.0°F 43.6°F 40.6°F
May 6 44.9°F 43.2°F 40.9°F
May 7 45.5°F 44.5°F 41.5°F
May 8 45.9°F 43.4°F 41.9°F
May 9 46.3°F 42.9°F 42.3°F
May 10 46.8°F 43.4°F 42.8°F
May 11 47.3°F 43.9°F 43.3°F
May 12 47.9°F 44.5°F 43.9°F
May 13 48.7°F 47.2°F 44.7°F

* actual - actual temperature values

** forecast - projected values for the next week

Real-time coastal temperatures could deviate by several degrees from the provided readings. These deviations often become evident following intense rainfall or strong winds.

Our forecasting methodology leverages a mathematical model, that uses current water and weather conditions, historical records, wind intensity and direction.

Sea water temperature in Vaasa by month

In an average year, Vaasa offers no days when the water temperature is warm enough to swim comfortably.
The warmest water in Vaasa was recorded on July 26, 2025, reaching a 74.5°F. While the coldest temperature occurred on January 1, 2018, dipping to 32.0°F. The average readings by season are 32.5°F in Winter, 37.4°F in Spring, 62.6°F in Summer, and 47.3°F in Autumn.