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

49.9

°F

October 5, 21:29

Trend:

stable

Yesterday:

49.5°F

Tomorrow:

49.6°F

Sunrise:

07:51

Sunset:

18:51

Day Length:

11 h. 0 min.

Vaasa in October

Minimum:

32.0°F

Average:

32.0°F

Maximum:

32.4°F

Sea water temperature in Vaasa today

As of now, in Vaasa, the water temperature is 49.9°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 0.3°F lower than the average recorded on this particular day in recent years. Since yesterday, there was a slight increase in temperature. This indicates a warming trend over the past day. According to the forecast, we expect the temperature to fall a bit.

Recent sea temperature and forecast

Today's water temperature is considerably lower than the average registered over the last two weeks, indicating a slight cooling trend. It also falls within the range of the average temperature recorded for this date, suggesting a consistent weather trend. The maximum temperature recorded for this date was 54.1°F on 2023, while the historical minimum was 47.5°F on 2022.

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 histoorical minimum and others when it was close to the historical maximum. The forecast for the upcoming week shows a gradual cooling trend. The average temperature is expected to be 48.6°F, the minimum temperature may reach 47.5°F, and the maximum might stay at 49.6°F.

Daily water temperature in Vaasa

Date Current Year

actual* / forecast**

last year 10 years average
Sep 21 57.5°F 59.2°F 55.1°F
Sep 22 57.5°F 57.4°F 54.7°F
Sep 23 56.2°F 56.8°F 54.4°F
Sep 24 54.7°F 56.2°F 53.7°F
Sep 25 54.1°F 55.5°F 53.1°F
Sep 26 53.6°F 55.5°F 52.8°F
Sep 27 53.0°F 54.9°F 52.4°F
Sep 28 51.2°F 54.6°F 52.3°F
Sep 29 51.0°F 53.2°F 51.8°F
Sep 30 51.8°F 51.5°F 51.6°F
Oct 1 52.0°F 50.5°F 51.4°F
Oct 2 51.3°F 49.1°F 51.1°F
Oct 3 50.0°F 50.1°F 50.9°F
Oct 4 49.5°F 50.0°F 50.4°F
Oct 5 49.9°F 49.3°F 50.2°F
Oct 6 49.6°F 49.8°F 49.9°F
Oct 7 49.5°F 49.7°F 49.8°F
Oct 8 49.0°F 49.3°F 49.3°F
Oct 9 48.3°F 48.9°F 48.7°F
Oct 10 48.1°F 48.7°F 48.4°F
Oct 11 48.0°F 48.3°F 48.3°F
Oct 12 47.5°F 47.8°F 47.8°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, 37.3°F in Spring, 62.2°F in Summer, and 47.4°F in Autumn.