S
M
T
W
T
F
S
30
73°
53°
31
72°
52°
1
71°
50°
2
69°
51°
3
70°
52°
4
68°
50°
5
65°
49°
6
65°
48°
7
64°
47°
8
64°
49°
9
65°
53°
10
63°
51°
11
63°
50°
12
68°
52°
13
67°
54°
14
68°
52°
15
65°
53°
16
67°
48°
17
61°
50°
18
64°
52°
19
66°
48°
20
66°
46°
21
64°
51°
22
66°
52°
23
66°
51°
24
65°
47°
25
64°
47°
26
64°
51°
27
65°
47°
28
63°
47°
29
56°
50°
30
57°
47°
1
58°
48°
2
60°
50°
3
60°
43°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Gdansk
Gdansk's September 2026 forecast shows daily high temperatures ranging from 56° to 73°, with overnight lows between 43° and 54°. The average high for September is 65° with an average low of 50°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how September weather will actually feel in Gdansk. See also: October | November | December.
