What is the current water temperature in Ruhnu?

Q: What is the current water temperature in Ruhnu?

As of now, in Ruhnu, the water temperature is 0.47°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.

Estonia > Ruhnu

Water temperature in Ruhnu

Detailed information about the current water temperature in Ruhnu. 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.

32.8

°F

February 3, 00:09

Trend:

stable

Yesterday:

32.8°F

Tomorrow:

32.6°F

Sunrise:

08:27

Sunset:

16:56

Day Length:

8 h. 29 min.

Ruhnu in February

Minimum:

37.2°F

Average:

39.3°F

Maximum:

41.0°F

Sea water temperature in Ruhnu today

As of now, in Ruhnu, the water temperature is 32.8°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 2.8°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 39.9°F on 2020, while the historical minimum was 33.5°F on 2024.

latest data

last year

Over the last two weeks, the water temperature has stayed slightly lower than historical averages for those days. The forecast for the upcoming week shows a gradual cooling trend. The average temperature is expected to be 32.4°F, the minimum temperature may reach 32.0°F, and the maximum might stay at 32.6°F.

Daily water temperature in Ruhnu

Date	Current Year actual* / forecast**	last year	10 years average
Jan 20	35.5°F	39.0°F	36.5°F
Jan 21	35.3°F	38.6°F	36.4°F
Jan 22	35.4°F	38.3°F	36.3°F
Jan 23	35.2°F	37.9°F	36.2°F
Jan 24	35.1°F	37.6°F	36.0°F
Jan 25	34.6°F	38.5°F	35.9°F
Jan 26	34.4°F	37.7°F	35.9°F
Jan 27	34.4°F	37.3°F	35.6°F
Jan 28	33.9°F	36.9°F	35.3°F
Jan 29	34.1°F	36.4°F	35.2°F
Jan 30	33.7°F	36.7°F	35.0°F
Jan 31	33.2°F	36.3°F	35.1°F
Feb 1	32.0°F	36.1°F	35.0°F
Feb 2	32.8°F	38.1°F	35.6°F
Feb 3	32.8°F	37.6°F	35.6°F
Feb 4	32.6°F	37.2°F	35.3°F
Feb 5	32.4°F	36.7°F	35.2°F
Feb 6	32.4°F	36.3°F	35.2°F
Feb 7	32.5°F	35.7°F	35.3°F
Feb 8	32.6°F	38.0°F	35.3°F
Feb 9	32.3°F	36.4°F	35.1°F
Feb 10	32.0°F	36.4°F	34.8°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 Ruhnu by month

In an average year, Ruhnu offers no days when the water temperature is warm enough to swim comfortably.

The warmest water in Ruhnu was recorded on July 17, 2021, reaching a 77.4°F. While the coldest temperature occurred on February 1, 2026, dipping to 32.0°F. The average readings by season are 37.8°F in Winter, 39.6°F in Spring, 63.7°F in Summer, and 54.6°F in Autumn.