Measurements:
°C
°F
CURRENT WEATHER
23:29
Gdynia
66°F
E 2 mph
Feels like: 66°F
Precip: 15%
World Resorts Poland Gdynia Weather

7 Day Weather Forecast

09.08
tue
DAY
74°F
NE 11 mph
precip
12%
NIGHT
66°F
E 2 mph
precip
15%
09.09
wed
DAY
76°F
NE 14 mph
precip
17%
NIGHT
58°F
E 17 mph
precip
10%
09.10
thu
DAY
62°F
E 16 mph
precip
14%
NIGHT
52°F
NE 8 mph
precip
9%
09.11
fri
DAY
66°F
NE 7 mph
precip
7%
NIGHT
58°F
NE 6 mph
precip
18%
09.12
sat
DAY
70°F
E 9 mph
precip
2%
NIGHT
60°F
E 7 mph
precip
22%
09.13
sun
DAY
66°F
NE 9 mph
precip
13%
NIGHT
62°F
NE 9 mph
precip
19%
09.14
mon
DAY
64°F
E 12 mph
precip
3%
NIGHT
54°F
E 8 mph
precip
16%

Gdynia Sea Water Temperature in September, °F

Select Year: 2025 2024 2023

The average sea surface temperature in September 2025 for Gdynia was 17.9°F. The maximum and minimum values were 16.0°F and 19.4°F respectively.

Gdynia on the Weather Map

Best Time to Visit Gdynia
The most sunny months:
May 13 days
June 13 days
August 12 days
The most warm months:
August 72.5 °F
July 71.6 °F
June 67.3 °F
Warmest sea temperature:
August 69.6 °F
July 67.5 °F
September 65.0 °F
The most cold months:
January 33.0 °F
February 34.3 °F
December 37.2 °F
The most rainy months:
July 5 days
August 4 days
June 3 days
The most windy months:
December 13 mph
January 13 mph
February 12 mph
more details