All data are in degrees Fahrenheit

en

Water temperature in Jakobstad

Detailed information about the current water temperature in Jakobstad. 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 Jakobstad now

56.5

°F

September 17, 11:49

Trend:

decreasing

Yesterday:

56.9°F

Tomorrow:

56.0°F

Sunrise:

06:57

Sunset:

19:49

Day Length:

12 h. 52 min.

Jakobstad in September

Minimum:

32.0°F

Average:

32.7°F

Maximum:

34.1°F

Sea water temperature in Jakobstad today

As of now, in Jakobstad, the water temperature is 56.5°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 1.6°F higher than the average recorded on this particular day in recent years. The sea temperature remains approximately unchanged from yesterday. 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 is also close to the historical maximum temperature for this date. The maximum temperature recorded for this date was 57.5°F on 2024, while the historical minimum was 52.3°F on 2022.

Observations from the last two weeks indicate that the water temperature was in proximity to the highest values recorded on those days in the past. The forecast for the upcoming week shows a gradual cooling trend. The average temperature is expected to be 55.3°F, the minimum temperature may reach 54.4°F, and the maximum might stay at 56.0°F.

Daily water temperature in Jakobstad

Date Current Year

actual* / forecast**

last year 10 years average
Sep 3 58.4°F 58.9°F 58.7°F
Sep 4 58.3°F 59.0°F 58.4°F
Sep 5 58.8°F 59.4°F 58.3°F
Sep 6 59.8°F 60.3°F 57.8°F
Sep 7 60.8°F 61.1°F 57.7°F
Sep 8 60.9°F 60.8°F 57.7°F
Sep 9 61.5°F 60.8°F 57.1°F
Sep 10 60.6°F 60.9°F 57.0°F
Sep 11 60.9°F 62.0°F 57.0°F
Sep 12 61.5°F 60.4°F 57.1°F
Sep 13 60.9°F 59.8°F 56.7°F
Sep 14 58.8°F 59.1°F 56.3°F
Sep 15 57.9°F 58.4°F 55.9°F
Sep 16 56.9°F 57.4°F 55.4°F
Sep 17 56.5°F 57.5°F 55.0°F
Sep 18 56.0°F 56.0°F 54.5°F
Sep 19 56.0°F 56.6°F 54.4°F
Sep 20 55.7°F 57.7°F 54.2°F
Sep 21 55.4°F 57.6°F 53.8°F
Sep 22 55.1°F 55.8°F 53.6°F
Sep 23 54.9°F 55.5°F 53.3°F
Sep 24 54.4°F 54.6°F 52.8°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 Jakobstad by month

In an average year, Jakobstad offers no days when the water temperature is warm enough to swim comfortably.
The warmest water in Jakobstad was recorded on July 25, 2025, reaching a 72.4°F. While the coldest temperature occurred on January 1, 2023, dipping to 32.0°F. The average readings by season are 33.3°F in Winter, 35.6°F in Spring, 59.3°F in Summer, and 47.4°F in Autumn.