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Rotterdam Weather Averages

Climate averages for Rotterdam based on 10 years of historical data.

Annual avg temp
11.7°C
Annual avg high
14.8°C
Annual avg low
8.7°C
Record high
38°C
Record low
-10°C
Annual rainfall
902 mm
Rainy days
154
Sunshine
2.7h/day
Fugtighed
74%

Average Rotterdam temperatures by month

Avg high

J
F
10°
M
14°
A
17°
M
21°
J
22°
J
23°
A
20°
S
15°
O
11°
N
D

Avg low

J
F
M
A
10°
M
13°
J
15°
J
15°
A
13°
S
10°
O
N
D

Average rainfall in Rotterdam by month

Rainfall (mm)

79
J
69
F
69
M
57
A
66
M
75
J
78
J
78
A
83
S
86
O
83
N
79
D

Sunshine hours in Rotterdam by month

Sunshine (h/day)

1
J
2
F
3
M
3
A
4
M
5
J
4
J
4
A
3
S
2
O
1
N
1
D

Humidity in Rotterdam by month

Average humidity

80%
J
78%
F
74%
M
70%
A
72%
M
72%
J
70%
J
69%
A
72%
S
77%
O
78%
N
82%
D

Sea temperature in Rotterdam by month

Sea temp

J
F
M
10°
A
14°
M
18°
J
19°
J
20°
A
19°
S
16°
O
11°
N
D

Month-by-month averages

Month Avg High Avg Low Rainfall Sunshine Sea Temp
Vejr i Januar 7°C 3°C 79 mm 1.4h 6.4°C
Vejr i Februar 8°C 3°C 69 mm 2.2h 6.8°C
Vejr i Marts 10°C 4°C 69 mm 2.7h 7.7°C
Vejr i April 14°C 6°C 57 mm 3.3h 10.0°C
Vejr i Maj 17°C 10°C 66 mm 3.7h 13.9°C
Vejr i Juni 21°C 13°C 75 mm 4.7h 17.6°C
Vejr i Juli 22°C 15°C 78 mm 3.6h 19.3°C
Vejr i August 23°C 15°C 78 mm 3.7h 20.2°C
Vejr i September 20°C 13°C 83 mm 3.1h 19.4°C
Vejr i Oktober 15°C 10°C 86 mm 2.1h 15.6°C
Vejr i November 11°C 6°C 83 mm 1.4h 11.3°C
Vejr i December 8°C 5°C 79 mm 1.1h 7.7°C