All data are in degrees Fahrenheit

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Water temperature in Gdańsk

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

37.6

°F

April 15, 22:25

Trend:

decreasing

Yesterday:

37.8°F

Tomorrow:

37.4°F

Sunrise:

05:45

Sunset:

19:47

Day Length:

14 h. 2 min.

Gdańsk in April

Minimum:

37.2°F

Average:

39.3°F

Maximum:

41.1°F

Sea water temperature in Gdańsk today

As of now, in Gdańsk, the water temperature is 37.6°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 5.3°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

The water temperature today is above average for the last two weeks, showing a small increase in temperature. It is also close to the historical minimum temperature for this date. The maximum temperature recorded for this date was 46.0°F on 2025, while the historical minimum was 39.9°F on 2021.

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. Over the next week, the forecast shows a steady trend, with temperatures staying close to the average of 37.8°F. Both minimum and maximum temperatures expected to be close to the average, offering a week of stable water conditions.

Daily water temperature in Gdańsk

Date Current Year

actual* / forecast**

last year 10 years average
Apr 1 36.4°F 41.3°F 39.7°F
Apr 2 35.5°F 41.4°F 39.5°F
Apr 3 36.4°F 42.3°F 39.8°F
Apr 4 36.4°F 44.4°F 40.1°F
Apr 5 38.4°F 42.6°F 40.3°F
Apr 6 39.3°F 42.6°F 40.4°F
Apr 7 38.3°F 41.8°F 40.6°F
Apr 8 38.0°F 41.8°F 40.5°F
Apr 9 36.9°F 41.6°F 40.3°F
Apr 10 37.4°F 41.1°F 41.3°F
Apr 11 36.7°F 41.0°F 41.5°F
Apr 12 37.1°F 41.4°F 41.5°F
Apr 13 37.4°F 43.8°F 42.1°F
Apr 14 37.8°F 43.3°F 42.0°F
Apr 15 37.6°F 46.0°F 43.0°F
Apr 16 37.4°F 46.0°F 42.7°F
Apr 17 37.3°F 46.7°F 42.6°F
Apr 18 37.2°F 43.2°F 42.5°F
Apr 19 37.7°F 45.4°F 43.1°F
Apr 20 38.2°F 46.3°F 43.5°F
Apr 21 38.4°F 45.2°F 43.8°F
Apr 22 38.6°F 45.4°F 43.9°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 Gdańsk by month

In an average year, Gdańsk offers no days when the water temperature is warm enough to swim comfortably.
The warmest water in Gdańsk was recorded on August 3, 2018, reaching a 75.4°F. While the coldest temperature occurred on February 4, 2026, dipping to 32.0°F. The average readings by season are 38.8°F in Winter, 43.5°F in Spring, 65.1°F in Summer, and 55.6°F in Autumn.