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

48.0

°F

May 21, 04:19

Trend:

stable

Yesterday:

48.0°F

Tomorrow:

47.8°F

Sunrise:

04:26

Sunset:

22:08

Day Length:

17 h. 42 min.

Helsinki in May

Minimum:

32.6°F

Average:

35.6°F

Maximum:

37.9°F

Sea water temperature in Helsinki today

As of now, in Helsinki, the water temperature is 48.0°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 0.8°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 also aligns closely with the historical average temperature for this date, indicating a typical climate pattern. The maximum temperature recorded for this date was 53.0°F on 2018, while the historical minimum was 44.0°F on 2017.

Over the past two weeks, the water temperature has closely aligned with historical averages for those days. The forecast for the upcoming week suggests a gradual increase. The average temperature is expected to rise up to 50.0°F, with minimum temperature starting at 47.8°F, while the maximum might reach 51.1°F.

Daily water temperature in Helsinki

Date Current Year

actual* / forecast**

last year 10 years average
May 7 42.8°F 38.7°F 41.7°F
May 8 42.1°F 39.9°F 41.8°F
May 9 41.9°F 41.4°F 42.4°F
May 10 43.3°F 41.6°F 42.8°F
May 11 43.1°F 43.0°F 42.6°F
May 12 43.7°F 43.8°F 43.2°F
May 13 44.1°F 44.7°F 43.6°F
May 14 44.5°F 45.7°F 44.0°F
May 15 44.1°F 45.1°F 44.1°F
May 16 44.7°F 42.0°F 44.4°F
May 17 43.7°F 42.3°F 44.7°F
May 18 46.0°F 44.3°F 45.4°F
May 19 46.4°F 45.9°F 46.3°F
May 20 48.0°F 47.2°F 47.1°F
May 21 48.0°F 48.0°F 47.1°F
May 22 47.8°F 45.3°F 47.0°F
May 23 49.1°F 48.3°F 48.3°F
May 24 49.9°F 48.8°F 49.0°F
May 25 50.4°F 50.3°F 49.6°F
May 26 50.6°F 51.0°F 49.7°F
May 27 51.0°F 50.2°F 50.1°F
May 28 51.1°F 50.8°F 50.2°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, 38.2°F in Spring, 60.0°F in Summer, and 50.9°F in Autumn.

Popular neighboring cities and resorts

City Water temperature* Distance**
Porvoo 50.0°F 29mi
Maardu 49.5°F 49mi
Tallinn 49.6°F 51mi
Loo 49.5°F 51mi
Paldiski 53.1°F 64mi

* current water temperature in this city

** straight line distance from Helsinki