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 6.49°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.

43.7

°F

October 17, 01:03

Trend:

decreasing

Yesterday:

44.2°F

Tomorrow:

43.4°F

Sunrise:

08:22

Sunset:

18:05

Day Length:

9 h. 43 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 43.7°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 2.1°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 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 minimum temperature for this date. The maximum temperature recorded for this date was 47.0°F on 2018, while the historical minimum was 41.9°F on 2024.

latest data

last year

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 42.7°F, the minimum temperature may reach 41.9°F, and the maximum might stay at 43.4°F.

Daily water temperature in Jakobstad

Date	Current Year actual* / forecast**	last year	10 years average
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	48.0°F
Oct 11	47.3°F	48.3°F	47.6°F
Oct 12	46.7°F	46.9°F	47.2°F
Oct 13	45.5°F	45.9°F	46.5°F
Oct 14	43.8°F	46.5°F	46.4°F
Oct 15	43.8°F	46.6°F	46.4°F
Oct 16	44.2°F	46.1°F	46.3°F
Oct 17	43.7°F	44.5°F	45.8°F
Oct 18	43.4°F	43.4°F	45.5°F
Oct 19	43.0°F	42.5°F	45.1°F
Oct 20	42.7°F	41.7°F	44.8°F
Oct 21	42.4°F	41.9°F	44.5°F
Oct 22	42.6°F	41.2°F	44.7°F
Oct 23	42.6°F	41.6°F	44.7°F
Oct 24	41.9°F	41.8°F	44.0°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.