All data are in degrees Fahrenheit

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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

51.1

°F

September 25, 18:05

Trend:

decreasing

Yesterday:

51.7°F

Tomorrow:

51.0°F

Sunrise:

07:19

Sunset:

19:21

Day Length:

12 h. 2 min.

Jakobstad in October

Minimum:

32.0°F

Average:

32.3°F

Maximum:

33.4°F

Sea water temperature in Jakobstad today

As of now, in Jakobstad, the water temperature is 51.1°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 1.3°F lower 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 stay about the same.

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 minimum temperature for this date. The maximum temperature recorded for this date was 54.9°F on 2023, while the historical minimum was 50.1°F on 2022.

Over the past two weeks, the water temperature has closely aligned with historical averages for those days. The forecast for the upcoming week shows a gradual cooling trend. The average temperature is expected to be 49.9°F, the minimum temperature may reach 48.6°F, and the maximum might stay at 51.0°F.

Daily water temperature in Jakobstad

Date Current Year

actual* / forecast**

last year 10 years average
Sep 11 55.4°F 60.9°F 56.9°F
Sep 12 56.6°F 61.5°F 57.1°F
Sep 13 55.3°F 60.9°F 56.6°F
Sep 14 55.6°F 58.8°F 56.2°F
Sep 15 55.2°F 57.9°F 55.7°F
Sep 16 55.0°F 56.9°F 55.3°F
Sep 17 54.5°F 56.5°F 55.0°F
Sep 18 54.6°F 56.7°F 54.6°F
Sep 19 54.1°F 56.8°F 54.5°F
Sep 20 54.5°F 56.3°F 54.3°F
Sep 21 54.0°F 57.5°F 54.1°F
Sep 22 53.8°F 55.8°F 53.7°F
Sep 23 53.0°F 55.3°F 53.4°F
Sep 24 51.7°F 52.2°F 52.6°F
Sep 25 51.1°F 52.0°F 52.4°F
Sep 26 51.0°F 51.1°F 52.3°F
Sep 27 50.2°F 50.6°F 51.6°F
Sep 28 50.2°F 50.8°F 51.5°F
Sep 29 50.0°F 50.3°F 51.3°F
Sep 30 49.7°F 51.2°F 51.0°F
Oct 1 49.4°F 50.5°F 50.8°F
Oct 2 48.6°F 49.6°F 49.9°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 33.2°F in Winter, 36.0°F in Spring, 59.7°F in Summer, and 47.2°F in Autumn.