All data are in degrees Fahrenheit

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Water temperature in Helsinki

Detailed information about the current water temperature in Helsinki. 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 Helsinki now

50.3

°F

October 24, 16:48

Trend:

stable

Yesterday:

50.0°F

Tomorrow:

50.0°F

Sunrise:

08:21

Sunset:

17:46

Day Length:

9 h. 25 min.

Helsinki in October

Minimum:

32.0°F

Average:

34.8°F

Maximum:

37.6°F

Sea water temperature in Helsinki today

As of now, in Helsinki, the water temperature is 50.3°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 1.7°F higher than the average recorded on this particular day in recent years. Since yesterday, there was a slight increase in temperature. This indicates a warming trend over the past day. 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 50.8°F on 2024, while the historical minimum was 46.2°F on 2022.

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 maximum recorded over the past years. The forecast for the upcoming week shows a gradual cooling trend. The average temperature is expected to be 49.3°F, the minimum temperature may reach 48.6°F, and the maximum might stay at 50.0°F.

Daily water temperature in Helsinki

Date Current Year

actual* / forecast**

last year 10 years average
Oct 10 53.7°F 53.0°F 52.1°F
Oct 11 54.1°F 53.0°F 51.8°F
Oct 12 54.2°F 52.6°F 51.8°F
Oct 13 53.8°F 50.2°F 50.9°F
Oct 14 53.1°F 52.0°F 51.1°F
Oct 15 52.6°F 51.6°F 50.9°F
Oct 16 52.5°F 51.2°F 50.7°F
Oct 17 52.0°F 50.5°F 50.6°F
Oct 18 51.4°F 50.0°F 50.0°F
Oct 19 51.2°F 50.1°F 50.0°F
Oct 20 50.6°F 49.7°F 49.8°F
Oct 21 49.8°F 49.5°F 49.4°F
Oct 22 49.4°F 47.4°F 49.1°F
Oct 23 50.0°F 47.6°F 49.0°F
Oct 24 50.3°F 47.5°F 48.6°F
Oct 25 50.0°F 47.6°F 48.3°F
Oct 26 49.8°F 47.3°F 48.1°F
Oct 27 49.7°F 47.4°F 48.1°F
Oct 28 49.2°F 47.0°F 47.5°F
Oct 29 49.1°F 46.7°F 47.4°F
Oct 30 48.7°F 47.2°F 47.0°F
Oct 31 48.6°F 47.1°F 46.9°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 Helsinki by month

In an average year, Helsinki offers no days when the water temperature is warm enough to swim comfortably.
The warmest water in Helsinki was recorded on July 17, 2021, reaching a 75.7°F. While the coldest temperature occurred on January 8, 2022, dipping to 32.0°F. The average readings by season are 35.2°F in Winter, 38.5°F in Spring, 60.5°F in Summer, and 51.2°F in Autumn.

Popular neighboring cities and resorts

City Water temperature* Distance**
Porvoo 47.6°F 29mi
Maardu 53.0°F 49mi
Tallinn 52.7°F 51mi
Loo 53.1°F 51mi
Paldiski 54.0°F 64mi

* current water temperature in this city

** straight line distance from Helsinki