What is the current water temperature in Jakobstad?

Q: What is the current water temperature in Jakobstad?

As of now, in Jakobstad, the water temperature is 9.48°C. 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.

Finland > Jakobstad

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.

49.1

°F

October 10, 22:58

Trend:

decreasing

Yesterday:

49.1°F

Tomorrow:

48.8°F

Sunrise:

08:02

Sunset:

18:29

Day Length:

10 h. 27 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 49.1°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 1.2°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 50.0°F on 2023, while the historical minimum was 45.9°F on 2019.

latest data

last year

Over the last two weeks, the water temperature has stayed slightly above than historical averages for those days. The forecast for the upcoming week shows a gradual cooling trend. The average temperature is expected to be 47.9°F, the minimum temperature may reach 47.0°F, and the maximum might stay at 48.8°F.

Daily water temperature in Jakobstad

Date	Current Year actual* / forecast**	last year	10 years average
Sep 26	51.2°F	51.1°F	52.2°F
Sep 27	52.7°F	50.6°F	51.7°F
Sep 28	52.6°F	50.8°F	51.7°F
Sep 29	52.5°F	50.3°F	51.4°F
Sep 30	53.0°F	51.2°F	51.2°F
Oct 1	52.9°F	50.5°F	51.0°F
Oct 2	52.6°F	49.6°F	50.2°F
Oct 3	52.6°F	48.6°F	49.9°F
Oct 4	52.6°F	49.8°F	49.8°F
Oct 5	52.4°F	48.6°F	49.1°F
Oct 6	52.5°F	48.3°F	48.7°F
Oct 7	50.6°F	47.8°F	48.7°F
Oct 8	49.7°F	47.7°F	48.5°F
Oct 9	49.1°F	47.8°F	48.1°F
Oct 10	49.1°F	48.7°F	47.9°F
Oct 11	48.8°F	48.3°F	47.6°F
Oct 12	48.4°F	46.9°F	47.2°F
Oct 13	47.8°F	45.9°F	46.6°F
Oct 14	47.8°F	46.5°F	46.6°F
Oct 15	47.8°F	46.6°F	46.6°F
Oct 16	47.4°F	46.1°F	46.3°F
Oct 17	47.0°F	44.5°F	45.8°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 33.2°F in Winter, 36.0°F in Spring, 59.7°F in Summer, and 47.2°F in Autumn.