All data are in degrees Fahrenheit

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Water temperature in Härnösand

Detailed information about the current water temperature in Härnösand. 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.
Sea temperature in Härnösand now

36.0

°F

March 30, 08:29

Trend:

stable

Yesterday:

35.9°F

Tomorrow:

35.7°F

Sunrise:

06:17

Sunset:

19:30

Day Length:

13 h. 13 min.

Härnösand in April

Minimum:

33.4°F

Average:

36.1°F

Maximum:

37.8°F

Sea water temperature in Härnösand today

As of now, in Härnösand, the water temperature is 36.0°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 2.3°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 notably higher than the average recorded over the past two weeks, indicating a significant warming trend. It is also close to the historical maximum temperature for this date. The maximum temperature recorded for this date was 35.5°F on 2025, while the historical minimum was 32.0°F on 2024.

Observations from the last two weeks indicate that the water temperature was in proximity to the highest values recorded on those days in the past. Over the next week, the forecast shows a steady trend, with temperatures staying close to the average of 36.1°F. Both minimum and maximum temperatures expected to be close to the average, offering a week of stable water conditions.

Daily water temperature in Härnösand

Date Current Year

actual* / forecast**

last year 10 years average
Mar 16 33.9°F 32.7°F 32.9°F
Mar 17 33.8°F 32.6°F 32.9°F
Mar 18 35.3°F 33.4°F 33.1°F
Mar 19 35.1°F 34.2°F 33.1°F
Mar 20 35.0°F 34.3°F 33.2°F
Mar 21 34.9°F 34.2°F 33.2°F
Mar 22 35.1°F 33.4°F 33.0°F
Mar 23 34.8°F 33.7°F 33.1°F
Mar 24 34.9°F 34.0°F 33.2°F
Mar 25 34.9°F 34.8°F 33.3°F
Mar 26 34.3°F 34.0°F 33.3°F
Mar 27 35.2°F 34.5°F 33.6°F
Mar 28 34.7°F 33.5°F 33.7°F
Mar 29 35.9°F 34.3°F 33.6°F
Mar 30 36.0°F 35.5°F 33.7°F
Mar 31 35.7°F 35.2°F 33.4°F
Apr 1 35.9°F 34.2°F 33.6°F
Apr 2 36.2°F 35.4°F 33.9°F
Apr 3 36.2°F 35.2°F 33.9°F
Apr 4 36.2°F 36.5°F 33.9°F
Apr 5 36.1°F 35.5°F 33.8°F
Apr 6 36.2°F 35.3°F 33.9°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 Härnösand by month

In an average year, Härnösand offers no days when the water temperature is warm enough to swim comfortably.
The warmest water in Härnösand was recorded on July 20, 2018, reaching a 70.2°F. While the coldest temperature occurred on January 24, 2016, dipping to 32.0°F. The average readings by season are 35.1°F in Winter, 36.7°F in Spring, 57.8°F in Summer, and 48.6°F in Autumn.