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 6.0°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.

42.8

°F

December 15, 00:18

Trend:

decreasing

Yesterday:

43.0°F

Tomorrow:

42.5°F

Sunrise:

09:05

Sunset:

15:39

Day Length:

6 h. 34 min.

Ruhnu in December

Minimum:

36.0°F

Average:

37.7°F

Maximum:

40.0°F

Sea water temperature in Ruhnu today

As of now, in Ruhnu, the water temperature is 42.8°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 1.3°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 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 43.1°F on 2015, while the historical minimum was 39.9°F on 2023.

latest data

last year

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 42.0°F, the minimum temperature may reach 41.5°F, and the maximum might stay at 42.5°F.

Daily water temperature in Ruhnu

Date	Current Year actual* / forecast**	last year	10 years average
Dec 1	44.1°F	44.5°F	44.6°F
Dec 2	46.0°F	45.2°F	44.5°F
Dec 3	44.9°F	45.2°F	44.2°F
Dec 4	44.4°F	45.3°F	44.0°F
Dec 5	44.0°F	44.3°F	43.7°F
Dec 6	43.6°F	43.9°F	43.5°F
Dec 7	43.3°F	43.6°F	43.2°F
Dec 8	42.9°F	43.3°F	43.0°F
Dec 9	42.7°F	42.9°F	42.7°F
Dec 10	44.4°F	43.0°F	42.8°F
Dec 11	44.5°F	42.3°F	42.6°F
Dec 12	43.5°F	42.4°F	42.2°F
Dec 13	43.4°F	42.7°F	41.9°F
Dec 14	43.0°F	42.9°F	41.6°F
Dec 15	42.8°F	42.6°F	41.5°F
Dec 16	42.5°F	42.1°F	41.2°F
Dec 17	42.4°F	42.0°F	41.1°F
Dec 18	42.2°F	41.9°F	40.8°F
Dec 19	42.1°F	41.6°F	40.8°F
Dec 20	42.1°F	41.8°F	40.8°F
Dec 21	41.5°F	41.8°F	40.2°F
Dec 22	41.6°F	41.7°F	40.2°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 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 37.7°F in Winter, 39.5°F in Spring, 63.4°F in Summer, and 54.6°F in Autumn.