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 18.58°C. Swimming in water of this temperature is generally concidered to be cool, and most people won't really enjoy it.

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.

65.4

°F

August 1, 04:49

Trend:

decreasing

Yesterday:

65.7°F

Tomorrow:

65.3°F

Sunrise:

05:20

Sunset:

21:45

Day Length:

16 h. 25 min.

Ruhnu in August

Minimum:

36.6°F

Average:

38.2°F

Maximum:

39.9°F

Sea water temperature in Ruhnu today

As of now, in Ruhnu, the water temperature is 65.4°F. Swimming in water of this temperature is generally concidered to be cool, and most people won't really enjoy it. Today's reading is 2.0°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 closely matches the previous two weeks' average, indicating a stable trend. It is also close to the historical minimum temperature for this date. The maximum temperature recorded for this date was 75.6°F on 2018, while the historical minimum was 64.3°F on 2020.

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. Over the next week, the forecast shows a steady trend, with temperatures staying close to the average of 65.3°F. Both minimum and maximum temperatures expected to be close to the average, offering a week of stable water conditions.

Daily water temperature in Ruhnu

Date	Current Year actual* / forecast**	last year	10 years average
Jul 18	67.7°F	66.5°F	66.5°F
Jul 19	67.3°F	65.9°F	66.7°F
Jul 20	67.2°F	68.0°F	67.0°F
Jul 21	66.6°F	69.4°F	67.2°F
Jul 22	64.5°F	69.7°F	67.1°F
Jul 23	63.9°F	69.8°F	67.0°F
Jul 24	63.7°F	71.3°F	67.4°F
Jul 25	65.6°F	70.5°F	67.2°F
Jul 26	65.1°F	71.5°F	68.0°F
Jul 27	65.0°F	72.8°F	68.3°F
Jul 28	64.6°F	74.1°F	68.5°F
Jul 29	64.0°F	73.1°F	68.6°F
Jul 30	64.0°F	70.5°F	67.8°F
Jul 31	65.7°F	70.1°F	67.7°F
Aug 1	65.4°F	69.8°F	67.5°F
Aug 2	65.3°F	67.8°F	67.3°F
Aug 3	65.4°F	67.9°F	67.4°F
Aug 4	65.4°F	68.0°F	67.4°F
Aug 5	65.4°F	68.1°F	67.5°F
Aug 6	65.4°F	66.5°F	67.4°F
Aug 7	65.1°F	66.4°F	67.1°F
Aug 8	65.2°F	66.0°F	67.2°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 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.