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 12.79°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.

55.0

°F

June 5, 19:51

Trend:

stable

Yesterday:

56.2°F

Tomorrow:

55.4°F

Sunrise:

04:32

Sunset:

22:20

Day Length:

17 h. 48 min.

Ruhnu in June

Minimum:

36.5°F

Average:

38.6°F

Maximum:

40.6°F

Sea water temperature in Ruhnu today

As of now, in Ruhnu, the water temperature is 55.0°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 0.4°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 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 63.4°F on 2024, while the historical minimum was 48.1°F on 2022.

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 minimum recorded over the past years. The forecast for the upcoming week suggests a gradual increase. The average temperature is expected to rise up to 56.0°F, with minimum temperature starting at 55.3°F, while the maximum might reach 56.9°F.

Daily water temperature in Ruhnu

Date	Current Year actual* / forecast**	last year	10 years average
May 22	45.5°F	45.5°F	48.9°F
May 23	47.2°F	45.9°F	49.9°F
May 24	48.0°F	44.0°F	50.4°F
May 25	47.9°F	45.5°F	51.5°F
May 26	48.3°F	48.1°F	51.6°F
May 27	49.0°F	48.6°F	51.7°F
May 28	48.7°F	48.7°F	51.7°F
May 29	48.5°F	49.6°F	52.5°F
May 30	48.1°F	50.9°F	52.8°F
May 31	49.5°F	52.4°F	53.6°F
Jun 1	47.9°F	51.2°F	53.3°F
Jun 2	49.1°F	52.6°F	54.5°F
Jun 3	51.0°F	51.2°F	54.4°F
Jun 4	56.2°F	52.1°F	55.6°F
Jun 5	55.0°F	52.4°F	55.4°F
Jun 6	55.4°F	52.6°F	55.8°F
Jun 7	55.3°F	52.6°F	55.7°F
Jun 8	55.7°F	53.2°F	56.1°F
Jun 9	56.0°F	53.9°F	56.4°F
Jun 10	56.0°F	53.7°F	56.4°F
Jun 11	56.8°F	52.5°F	57.2°F
Jun 12	56.9°F	51.7°F	57.3°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, 39.4°F in Spring, 63.6°F in Summer, and 54.6°F in Autumn.