Climate in Gdansk (Poland)

The climate of Gdansk is Baltic, that is to say, relatively continental, with cold winters and mild or pleasant warm summers.
The city is located in northern Poland, in the Pomeranian Voivodeship, on the Baltic Sea coast, where the climate is a bit milder than in inland areas.
Winter is cold and gray. Snowfalls are frequent, but generally not abundant.
Sometimes, cold waves from Siberia can occur, and the temperatures can drop to -20 °C (-4 °F) or below. The coldest record is -31 °C (-23.8 °F) and was set in January 1987.
In summer, the temperatures are pleasant and suitable for outdoor activities, although sometimes there can be rains and thunderstorms.
Every now and then (and more often in recent years due to global warming), there can be short heat waves, sometimes only a day or two, with maximum temperatures reaching or exceeding 30 °C (86 °F). The temperature reached 35 °C (95 °F) in August 1994 and in August 1992.

Although we are in the far north of Poland, the latitude of Gdansk (52°14'N) is not high enough to observe the phenomenon of the white nights, in which the sun sets but it does not get completely dark even at midnight.
On June 21, the longest day of the year, the sun rises at 4:10 am and sets at 9:23 pm. On December 21, the shortest day of the year, the sun rises at 8:04 am and sets at 3:22 pm.

Best Time

The best time to visit Gdansk runs from mid-May to mid-September, since it is the warmest and sunniest period of the year. Sometimes, it can be hot in July and August, while in other circumstances, nights can be cool or even a little cold even in these months, so it can be useful to bring a sweatshirt or sweater and a light jacket for the evening.

Gdansk - Climate data

In Gdansk, the average temperature of the coldest month (January) is of -1.3 °C (29.7 °F), that of the warmest month (July) is of 17.4 °C (63.2 °F). Here are the average temperatures.
Precipitation amounts to 570 millimeters (22.4 inches) per year: so, it is at an intermediate level. It ranges from 25 mm (1 in) in the driest month (February) to 80 mm (3.1 in) in the wettest one (July). Here is the average precipitation.
The sea temperature ranges from 3 °C (37 °F) in February, March to
There are on average around 1725 sunshine hours per year. Here are the average hours of sunshine per day.

Gdansk - Weather by month

Based on the period 1991-2020

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January, the coldest month of the year, is generally a very cold month. The average temperature is of -1.3 °C (30 °F), with a minimum of -3.6 °C (25.5 °F) and a maximum of 1 °C (33.8 °F).
On the coldest nights of the month, the temperature usually drops to around -15 °C (4.5 °F). However, it dropped to -26 °C (-14.8 °F) in January 2010.
On the warmest days of the month, the temperature usually reaches around 7.5 °C (45.5 °F). However, it reached 12 °C (53.6 °F) in January 2007.
Precipitation amounts to 30 mm (1.2 in), distributed over 7 days.
The day lasts on average 8 hours and 0 minutes.
There are on average 1.5 hours of sunshine per day. So, the sun shines 16% of the time.
The average humidity is 88%. Hence, the air is normally humid.
The average wind speed is 16 kph (10 mph).
The average sea temperature is of 4.5 °C (40 °F). Therefore, the sea is very cold for swimming.

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February is generally a very cold month. The average temperature is of -0.8 °C (31 °F), with a minimum of -3.5 °C (25.7 °F) and a maximum of 1.9 °C (35.4 °F).
On the coldest nights of the month, the temperature usually drops to around -13.5 °C (8 °F). However, it dropped to -27 °C (-16.6 °F) in February 1996.
On the warmest days of the month, the temperature usually reaches around 8 °C (46.5 °F). However, it reached 13 °C (55.4 °F) in February 2019.
Precipitation amounts to 25 mm (1 in), distributed over 6 days.
The day lasts on average 9 hours and 50 minutes.
There are on average 2.5 hours of sunshine per day. So, the sun shines 25% of the time.
The average humidity is 85%. Hence, the air is normally humid.
The average wind speed is 16 kph (10 mph).
The average sea temperature is of 3 °C (38 °F). Therefore, the sea is very cold for swimming.

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March is generally a cold month. The average temperature is of 2.2 °C (36 °F), with a minimum of -1.3 °C (29.7 °F) and a maximum of 5.7 °C (42.3 °F).
On the coldest nights, which normally occur at the beginning of the month, the temperature usually drops to around -9.5 °C (15 °F). However, it dropped to -18 °C (-0.4 °F) in March 1993.
On the warmest days, which normally occur at the end of the month, the temperature usually reaches around 14.5 °C (58.5 °F). However, it reached 20 °C (68 °F) in March 2010.
Precipitation amounts to 30 mm (1.2 in), distributed over 7 days.
The day lasts on average 12 hours and 0 minutes.
There are on average 4.5 hours of sunshine per day. So, the sun shines 36% of the time.
The average humidity is 79%. Hence, the air is normally humid.
The average wind speed is 15 kph (10 mph).
The average sea temperature is of 3 °C (37.5 °F). Therefore, the sea is very cold for swimming.

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April is generally a quite mild month. The average temperature is of 7 °C (45 °F), with a minimum of 2.1 °C (35.8 °F) and a maximum of 11.8 °C (53.2 °F).
On the coldest nights, which normally occur at the beginning of the month, the temperature usually drops to around -3.5 °C (25.5 °F). However, it dropped to -7 °C (19.4 °F) in April 2013.
On the warmest days, which normally occur at the end of the month, the temperature usually reaches around 21.5 °C (71 °F). However, it reached 27 °C (80.6 °F) in April 2000.
Precipitation amounts to 30 mm (1.2 in), distributed over 7 days.
The day lasts on average 14 hours and 10 minutes.
There are on average 5.5 hours of sunshine per day. So, the sun shines 38% of the time.
The average humidity is 71%. Hence, the air is normally humid.
The average wind speed is 14 kph (9 mph).
The average sea temperature is of 4.5 °C (40 °F). Therefore, the sea is very cold for swimming.

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May is generally a mild month. The average temperature is of 11.4 °C (53 °F), with a minimum of 6.3 °C (43.3 °F) and a maximum of 16.5 °C (61.7 °F).
On the coldest nights, which normally occur at the beginning of the month, the temperature usually drops to around 0 °C (32 °F). However, it dropped to -4 °C (24.8 °F) in May 2007.
On the warmest days, which normally occur at the end of the month, the temperature usually reaches around 25.5 °C (77.5 °F). However, it reached 30 °C (86 °F) in May 2011.
Precipitation amounts to 55 mm (2.2 in), distributed over 9 days.
The day lasts on average 16 hours and 5 minutes. So the days are long.
There are on average 8 hours of sunshine per day. So, the sun shines 49% of the time.
The average humidity is 71%. Hence, the air is normally humid.
The average wind speed is 13 kph (8 mph).
The average sea temperature is of 8.5 °C (47 °F). Therefore, the sea is very cold for swimming.

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June is generally a very mild month. The average temperature is of 15 °C (59 °F), with a minimum of 10.1 °C (50.2 °F) and a maximum of 19.8 °C (67.6 °F).
On the coldest nights, which normally occur at the beginning of the month, the temperature usually drops to around 4.5 °C (40.5 °F). However, it dropped to 2 °C (35.6 °F) in June 1993.
On the warmest days, which normally occur at the end of the month, the temperature usually reaches around 28.5 °C (83 °F). However, it reached 34 °C (93.2 °F) in June 2019.
Precipitation amounts to 60 mm (2.4 in), distributed over 9 days.
The day lasts on average 17 hours and 5 minutes. So the days are very long. June 21, the summer solstice, is the longest day of the year in the Northern Hemisphere.
There are on average 8.5 hours of sunshine per day. So, the sun shines 51% of the time.
The average humidity is 72%. Hence, the air is normally humid.
The average wind speed is 13 kph (8 mph).
The average sea temperature is of 13.5 °C (56 °F). Therefore, the sea is very cold for swimming.

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July, the warmest month of the year, is generally a very mild month. The average temperature is of 17.4 °C (63 °F), with a minimum of 12.7 °C (54.9 °F) and a maximum of 22 °C (71.6 °F).
On the coldest nights of the month, the temperature usually drops to around 8 °C (46 °F). However, it dropped to 3 °C (37.4 °F) in July 1992.
On the warmest days of the month, the temperature usually reaches around 29.5 °C (84.5 °F). However, it reached 35 °C (95 °F) in July 1994.
Precipitation amounts to 80 mm (3.1 in), distributed over 9 days.
The day lasts on average 16 hours and 30 minutes. So the days are long.
There are on average 7.5 hours of sunshine per day. So, the sun shines 46% of the time.
The average humidity is 75%. Hence, the air is normally humid.
The average wind speed is 13 kph (8 mph).
The average sea temperature is of 17 °C (63 °F). Therefore, the sea is cold for swimming.

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August is generally a very mild month. The average temperature is of 17.2 °C (63 °F), with a minimum of 12.4 °C (54.3 °F) and a maximum of 22 °C (71.6 °F).
On the coldest nights of the month, the temperature usually drops to around 7.5 °C (45 °F). However, it dropped to 5 °C (41 °F) in August 1992.
On the warmest days of the month, the temperature usually reaches around 29.5 °C (85.5 °F). However, it reached 35 °C (95 °F) in August 1992.
Precipitation amounts to 70 mm (2.8 in), distributed over 9 days.
The day lasts on average 14 hours and 50 minutes. So the days are long.
There are on average 7.5 hours of sunshine per day. So, the sun shines 49% of the time.
The average humidity is 75%. Hence, the air is normally humid.
The average wind speed is 12 kph (7 mph).
The average sea temperature is of 18.5 °C (65 °F). Therefore, the sea is very cool for swimming.

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September is generally a mild month. The average temperature is of 13.2 °C (56 °F), with a minimum of 9 °C (48.2 °F) and a maximum of 17.3 °C (63.1 °F).
On the coldest nights, which normally occur at the end of the month, the temperature usually drops to around 3.5 °C (38 °F). However, it dropped to 0 °C (32 °F) in September 1993.
On the warmest days, which normally occur at the beginning of the month, the temperature usually reaches around 24.5 °C (76 °F). However, it reached 32 °C (89.6 °F) in September 2015.
Precipitation amounts to 65 mm (2.6 in), distributed over 9 days.
The day lasts on average 12 hours and 35 minutes.
There are on average 6 hours of sunshine per day. So, the sun shines 46% of the time.
The average humidity is 80%. Hence, the air is normally humid.
The average wind speed is 12 kph (8 mph).
The average sea temperature is of 16 °C (61 °F). Therefore, the sea is cold for swimming.

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October is generally a quite mild month. The average temperature is of 8.3 °C (47 °F), with a minimum of 4.9 °C (40.8 °F) and a maximum of 11.7 °C (53.1 °F).
On the coldest nights, which normally occur at the end of the month, the temperature usually drops to around -2 °C (28 °F). However, it dropped to -5 °C (23 °F) in October 1997.
On the warmest days, which normally occur at the beginning of the month, the temperature usually reaches around 19 °C (66 °F). However, it reached 23 °C (73.4 °F) in October 1995.
Precipitation amounts to 55 mm (2.2 in), distributed over 9 days.
The day lasts on average 10 hours and 25 minutes.
There are on average 3.5 hours of sunshine per day. So, the sun shines 33% of the time.
The average humidity is 83%. Hence, the air is normally humid.
The average wind speed is 13 kph (8 mph).
The average sea temperature is of 13 °C (55 °F). Therefore, the sea is very cold for swimming.

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November is generally a cold month. The average temperature is of 3.6 °C (38 °F), with a minimum of 1.4 °C (34.5 °F) and a maximum of 5.8 °C (42.4 °F).
On the coldest nights, which normally occur at the end of the month, the temperature usually drops to around -6 °C (21 °F). However, it dropped to -17 °C (1.4 °F) in November 1998.
On the warmest days, which normally occur at the beginning of the month, the temperature usually reaches around 11.5 °C (53 °F). However, it reached 16 °C (60.8 °F) in November 2020.
Precipitation amounts to 45 mm (1.8 in), distributed over 9 days.
The day lasts on average 8 hours and 30 minutes.
There are on average 1.5 hours of sunshine per day. So, the sun shines 18% of the time.
The average humidity is 89%. Hence, the air is normally humid.
The average wind speed is 14 kph (9 mph).
The average sea temperature is of 9 °C (48.5 °F). Therefore, the sea is very cold for swimming.

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December is generally a cold month. The average temperature is of 0.1 °C (32 °F), with a minimum of -2 °C (28.4 °F) and a maximum of 2.2 °C (36 °F).
On the coldest nights of the month, the temperature usually drops to around -11 °C (12 °F). However, it dropped to -22 °C (-7.6 °F) in December 1996.
On the warmest days of the month, the temperature usually reaches around 8 °C (46.5 °F). However, it reached 13 °C (55.4 °F) in December 2006.
Precipitation amounts to 35 mm (1.4 in), distributed over 9 days.
The day lasts on average 7 hours and 25 minutes. So the days are short. December 21, the winter solstice, is the shortest day of the year in the Northern Hemisphere.
There is an average of 1 hour of sunshine per day. So, the sun shines 14% of the time.
The average humidity is 90%. Hence, the air is normally humid.
The average wind speed is 15 kph (9 mph).
The average sea temperature is of 6.5 °C (43.5 °F). Therefore, the sea is very cold for swimming.