15.09
tue
tue
Day
73°F
NE 11 mph
Precip.
16%
16%
Night
61°F
SE 7 mph
Precip.
22%
22%
16.09
wed
wed
Day
64°F
E 12 mph
Precip.
18%
18%
Night
54°F
E 2 mph
Precip.
34%
34%
17.09
thu
thu
Day
61°F
NE 13 mph
Precip.
19%
19%
Night
57°F
E 4 mph
Precip.
43%
43%
18.09
fri
fri
Day
63°F
E 12 mph
Precip.
13%
13%
Night
59°F
NE 9 mph
Precip.
20%
20%
19.09
sat
sat
Day
61°F
NE 12 mph
Precip.
37%
37%
Night
63°F
NE 9 mph
Precip.
41%
41%
20.09
sun
sun
Day
64°F
E 8 mph
Precip.
14%
14%
Night
59°F
NE 4 mph
Precip.
19%
19%
21.09
mon
mon
Day
72°F
E 11 mph
Precip.
4%
4%
Night
61°F
E 2 mph
Precip.
12%
12%
22.09
tue
tue
Day
72°F
N 2 mph
Precip.
4%
4%
Night
64°F
NW 3 mph
Precip.
11%
11%
23.09
wed
wed
Day
72°F
SE 6 mph
Precip.
3%
3%
Night
59°F
S 4 mph
Precip.
29%
29%
24.09
thu
thu
Day
63°F
SW 7 mph
Precip.
13%
13%
Night
55°F
SW 4 mph
Precip.
13%
13%
25.09
fri
fri
Day
61°F
SW 7 mph
Precip.
3%
3%
Night
54°F
SW 6 mph
Precip.
10%
10%
26.09
sat
sat
Day
59°F
W 6 mph
Precip.
11%
11%
Night
54°F
SW 6 mph
Precip.
16%
16%
27.09
sun
sun
Day
61°F
W 6 mph
Precip.
1%
1%
Night
55°F
W 5 mph
Precip.
13%
13%
28.09
mon
mon
Day
64°F
NW 5 mph
Precip.
1%
1%
Night
59°F
SW 2 mph
Precip.
2%
2%
sea water
temperature
temperature
| Rotterdam |
monthly
weather
weather
| Rotterdam |
current
weather
weather
| Rotterdam |
7 days
forecast
forecast
| Rotterdam |
Sea water temperature in September, °F
Show year:
2026
2025
2024
The average sea water temperature in September of 2026 was 67.2°F. The highest and lowest sea temperatures during the month were 68.2°F and 66.2°F.
Air temperature in Rotterdam, °F
Precipitation total in Rotterdam, in.
* Charts above show average data for the last 3 years.
Best time for vacation in Rotterdam
Rotterdam on a weather map
Places in Netherlands:
Name
°F
24 Hours Forecast
Rotterdam
Local time: 13:27
September 15, tuesday
1500
73°F
NE
13 mph
13 mph
1800
72°F
E
11 mph
11 mph
2100
63°F
E
8 mph
8 mph
September 16, wednesday
0000
61°F
SE
7 mph
7 mph
0300
59°F
SE
5 mph
5 mph
0600
57°F
E
6 mph
6 mph
0900
61°F
E
7 mph
7 mph
1200
64°F
E
12 mph
12 mph
