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 1.77°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.

35.2

°F

January 23, 22:47

Trend:

decreasing

Yesterday:

35.4°F

Tomorrow:

35.0°F

Sunrise:

08:48

Sunset:

16:31

Day Length:

7 h. 43 min.

Ruhnu in January

Minimum:

37.4°F

Average:

39.5°F

Maximum:

41.8°F

Sea water temperature in Ruhnu today

As of now, in Ruhnu, the water temperature is 35.2°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 1.1°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 also falls within the range of the average temperature recorded for this date, suggesting a consistent weather trend. The maximum temperature recorded for this date was 39.8°F on 2020, while the historical minimum was 33.7°F on 2024.

latest data

last year

Over the past two weeks, the water temperature has closely aligned with historical averages for those days. The forecast for the upcoming week shows a gradual cooling trend. The average temperature is expected to be 34.6°F, the minimum temperature may reach 34.0°F, and the maximum might stay at 35.0°F.

Daily water temperature in Ruhnu

Date	Current Year actual* / forecast**	last year	10 years average
Jan 9	38.9°F	39.1°F	38.0°F
Jan 10	38.0°F	39.2°F	37.9°F
Jan 11	37.8°F	38.9°F	37.7°F
Jan 12	37.7°F	38.7°F	37.8°F
Jan 13	37.4°F	38.5°F	37.3°F
Jan 14	37.0°F	38.8°F	37.1°F
Jan 15	37.1°F	38.9°F	37.2°F
Jan 16	36.9°F	38.6°F	37.0°F
Jan 17	36.8°F	37.4°F	37.0°F
Jan 18	37.0°F	38.6°F	37.1°F
Jan 19	36.7°F	38.3°F	36.6°F
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	36.3°F
Jan 24	35.0°F	37.6°F	36.1°F
Jan 25	34.9°F	38.5°F	36.0°F
Jan 26	34.9°F	37.7°F	36.0°F
Jan 27	34.7°F	37.3°F	35.7°F
Jan 28	34.3°F	36.9°F	35.4°F
Jan 29	34.2°F	36.4°F	35.3°F
Jan 30	34.0°F	36.7°F	35.1°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 20, 2021, 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.