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 6.06°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.

42.9

°F

April 22, 17:22

Trend:

decreasing

Yesterday:

44.3°F

Tomorrow:

42.6°F

Sunrise:

05:37

Sunset:

21:20

Day Length:

15 h. 43 min.

Jakobstad in April

Minimum:

32.0°F

Average:

32.6°F

Maximum:

33.9°F

Sea water temperature in Jakobstad today

As of now, in Jakobstad, the water temperature is 42.9°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 7.3°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 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 41.6°F on 2020, while the historical minimum was 32.6°F on 2018.

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. Over the next week, the forecast shows a steady trend, with temperatures staying close to the average of 42.7°F. Both minimum and maximum temperatures expected to be close to the average, offering a week of stable water conditions.

Daily water temperature in Jakobstad

Date	Current Year actual* / forecast**	last year	10 years average
Apr 8	34.3°F	32.1°F	32.8°F
Apr 9	34.9°F	34.0°F	33.0°F
Apr 10	35.0°F	32.1°F	33.0°F
Apr 11	35.7°F	32.0°F	32.9°F
Apr 12	37.4°F	32.3°F	33.0°F
Apr 13	39.7°F	34.3°F	33.5°F
Apr 14	41.5°F	34.1°F	33.7°F
Apr 15	40.4°F	38.0°F	33.9°F
Apr 16	43.5°F	37.0°F	34.3°F
Apr 17	41.8°F	39.4°F	34.8°F
Apr 18	40.9°F	40.6°F	34.6°F
Apr 19	41.3°F	39.5°F	34.9°F
Apr 20	43.3°F	40.9°F	35.7°F
Apr 21	44.3°F	39.7°F	36.2°F
Apr 22	42.9°F	39.4°F	35.6°F
Apr 23	42.6°F	38.3°F	35.3°F
Apr 24	42.5°F	39.4°F	35.2°F
Apr 25	42.8°F	38.7°F	35.5°F
Apr 26	42.9°F	40.5°F	35.6°F
Apr 27	42.6°F	39.3°F	35.3°F
Apr 28	42.9°F	38.4°F	35.6°F
Apr 29	42.8°F	37.8°F	35.5°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, 35.8°F in Spring, 59.7°F in Summer, and 47.2°F in Autumn.