All data are in degrees Fahrenheit

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Water temperature in Wismar

Detailed information about the current water temperature in Wismar. 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 Wismar now

38.8

°F

April 18, 16:33

Trend:

increasing

Yesterday:

37.0°F

Tomorrow:

39.3°F

Sunrise:

06:08

Sunset:

20:21

Day Length:

14 h. 13 min.

Wismar in April

Minimum:

34.3°F

Average:

38.4°F

Maximum:

40.4°F

Sea water temperature in Wismar today

As of now, in Wismar, the water temperature is 38.8°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 7.7°F lower than the average recorded on this particular day in recent years. Since yesterday, there was a noticeable 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 slightly lower than the average registered over the last two weeks, indicating a slight cooling trend. It is also close to the historical minimum temperature for this date. The maximum temperature recorded for this date was 50.5°F on 2025, while the historical minimum was 43.1°F on 2018.

Observations from the last two weeks indicate that the water temperature was in proximity to the lowest values recorded on those days in the past. The forecast for the upcoming week suggests a gradual increase. The average temperature is expected to rise up to 40.4°F, with minimum temperature starting at 39.3°F, while the maximum might reach 41.8°F.

Daily water temperature in Wismar

Date Current Year

actual* / forecast**

last year 10 years average
Apr 4 36.5°F 47.3°F 42.7°F
Apr 5 38.0°F 50.0°F 43.2°F
Apr 6 39.1°F 48.7°F 43.6°F
Apr 7 40.8°F 48.0°F 44.0°F
Apr 8 43.2°F 48.0°F 44.0°F
Apr 9 41.1°F 47.4°F 44.4°F
Apr 10 40.8°F 47.0°F 44.9°F
Apr 11 41.1°F 48.1°F 44.8°F
Apr 12 42.2°F 48.1°F 45.0°F
Apr 13 38.4°F 48.5°F 44.5°F
Apr 14 36.4°F 51.7°F 44.7°F
Apr 15 38.0°F 50.8°F 44.7°F
Apr 16 35.9°F 52.8°F 45.0°F
Apr 17 37.0°F 51.8°F 45.3°F
Apr 18 38.8°F 50.5°F 46.5°F
Apr 19 39.3°F 49.5°F 47.0°F
Apr 20 39.4°F 48.3°F 47.1°F
Apr 21 40.0°F 47.5°F 47.7°F
Apr 22 40.4°F 47.9°F 48.1°F
Apr 23 40.6°F 49.1°F 48.2°F
Apr 24 41.8°F 51.0°F 49.5°F
Apr 25 41.5°F 50.6°F 49.2°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 Wismar by month

In an average year, Wismar offers no days when the water temperature is warm enough to swim comfortably.
The warmest water in Wismar was recorded on July 27, 2018, reaching a 73.7°F. While the coldest temperature occurred on January 21, 2024, dipping to 32.0°F. The average readings by season are 37.3°F in Winter, 46.8°F in Spring, 66.4°F in Summer, and 54.9°F in Autumn.