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 7.72°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.

45.9

°F

May 22, 16:22

Trend:

increasing

Yesterday:

44.9°F

Tomorrow:

46.4°F

Sunrise:

04:00

Sunset:

22:53

Day Length:

18 h. 53 min.

Jakobstad in May

Minimum:

32.0°F

Average:

32.5°F

Maximum:

33.4°F

Sea water temperature in Jakobstad today

As of now, in Jakobstad, the water temperature is 45.9°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 3.3°F higher than the average recorded on this particular day in recent years. Since yesterday, there was a noticeable increase in temperature. This indicates a warming trend over the past day. According to the forecast, we expect the temperature to rise a bit.

Recent sea temperature and forecast

Today's water temperature is notably higher than the average recorded over the past two weeks, indicating a significant warming trend. It is also close to the historical maximum temperature for this date. The maximum temperature recorded for this date was 48.4°F on 2025, while the historical minimum was 39.1°F on 2021.

latest data

last year

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 suggests a gradual increase. The average temperature is expected to rise up to 47.6°F, with minimum temperature starting at 46.3°F, while the maximum might reach 49.7°F.

Daily water temperature in Jakobstad

Date	Current Year actual* / forecast**	last year	10 years average
May 8	42.2°F	39.7°F	39.1°F
May 9	43.8°F	40.0°F	38.9°F
May 10	45.0°F	40.7°F	39.6°F
May 11	44.2°F	40.4°F	39.2°F
May 12	44.5°F	40.5°F	39.3°F
May 13	44.0°F	44.9°F	40.1°F
May 14	44.3°F	45.1°F	40.6°F
May 15	43.6°F	45.8°F	40.7°F
May 16	43.5°F	46.5°F	40.9°F
May 17	45.4°F	45.5°F	41.2°F
May 18	44.6°F	47.0°F	41.8°F
May 19	43.1°F	46.7°F	41.9°F
May 20	44.3°F	46.5°F	42.0°F
May 21	44.9°F	48.1°F	42.7°F
May 22	45.9°F	48.4°F	42.6°F
May 23	46.4°F	46.4°F	43.2°F
May 24	46.3°F	45.1°F	43.1°F
May 25	47.0°F	45.7°F	43.7°F
May 26	47.1°F	47.5°F	43.9°F
May 27	48.0°F	46.9°F	44.7°F
May 28	48.7°F	49.7°F	45.4°F
May 29	49.7°F	49.2°F	46.4°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, 35.9°F in Spring, 59.7°F in Summer, and 47.2°F in Autumn.