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 1.93°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.

35.5

°F

April 14, 12:18

Trend:

increasing

Yesterday:

35.1°F

Tomorrow:

35.8°F

Sunrise:

06:21

Sunset:

20:35

Day Length:

14 h. 14 min.

Ruhnu in April

Minimum:

37.0°F

Average:

39.1°F

Maximum:

41.2°F

Sea water temperature in Ruhnu today

As of now, in Ruhnu, the water temperature is 35.5°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 1.2°F lower 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 rise 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 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 40.9°F on 2020, while the historical minimum was 34.1°F on 2018.

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 suggests a gradual increase. The average temperature is expected to rise up to 36.5°F, with minimum temperature starting at 35.8°F, while the maximum might reach 37.1°F.

Daily water temperature in Ruhnu

Date	Current Year actual* / forecast**	last year	10 years average
Mar 31	33.5°F	35.3°F	34.9°F
Apr 1	34.7°F	32.9°F	34.8°F
Apr 2	34.4°F	37.7°F	35.2°F
Apr 3	34.1°F	37.8°F	35.2°F
Apr 4	34.3°F	38.6°F	35.3°F
Apr 5	33.9°F	38.3°F	35.5°F
Apr 6	34.6°F	37.7°F	35.6°F
Apr 7	34.3°F	37.4°F	35.8°F
Apr 8	34.1°F	37.3°F	35.9°F
Apr 9	34.2°F	37.9°F	35.9°F
Apr 10	34.4°F	37.3°F	35.8°F
Apr 11	34.5°F	36.8°F	36.0°F
Apr 12	34.7°F	37.8°F	36.6°F
Apr 13	35.1°F	37.4°F	36.2°F
Apr 14	35.5°F	38.6°F	36.7°F
Apr 15	35.8°F	38.8°F	37.0°F
Apr 16	36.0°F	39.1°F	37.2°F
Apr 17	36.1°F	38.3°F	37.4°F
Apr 18	36.6°F	40.3°F	37.9°F
Apr 19	36.9°F	40.1°F	38.2°F
Apr 20	36.9°F	39.8°F	38.2°F
Apr 21	37.1°F	41.1°F	38.3°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 37.7°F in Winter, 39.5°F in Spring, 63.7°F in Summer, and 54.6°F in Autumn.