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Rotterdam weather in January

Weather in Rotterdam: January

Average day temperature: 43.0°F
Average night temperature: 39.7°F
Sea water temperature: 43.2°F
Number of sunny days: 5 days
Day length: 7.3 - 9.1 hours
Number of rainy days: 4 days
Precipitation totals: 1.9 in.

Air temperature in January, °F

Show year:
2025
2024
2023
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3
5
7
9
11
13
15
17
19
21
23
25
27
29
31
0
8
16
24
32
40
48
56
64
Day temperature   
Night temperature

The highest day temperature during January of 2025 was 50°F. At the same time the lowest night temperature was 31°F. Day and night temperature averages during January were 42.6°F and 39.1°F.

Sea water temperature in Rotterdam in January, °F

Show year:
2025
2024
2023
1
3
5
7
9
11
13
15
17
19
21
23
25
27
29
31
36
39
42
45
48
51
54

The average sea water temperature in January of 2025 was 42.6°F. The highest and lowest sea temperatures during the month were 45.5°F and 40.8°F.

Sunny, partly cloudy and cloudy days
Sunny days
Partly cloudy days
Cloudy days
16%
19%
65%

Mostly all days in January are cloudy but sunny and partly cloudy days are also possible.

Precipitation total in January, in.

jan
feb
mar
apr
may
jun
jul
aug
sep
oct
nov
dec
0.0
0.3
0.7
1.0
1.4
1.7
2.1
2.4
1.6
1.5
1.4
1.7
2.0
1.6
1.7
1.8
1.1
1.5
1.4
1.6
1.5
1.4
1.7
2.0
1.6
1.7
1.8
1.1
1.5
1.4
1.6

Precipitation total value in Rotterdam in January is 1.6 in. Other months of the year show relatively similar values.

Wind speed in January, mph
jan
feb
mar
apr
may
jun
jul
aug
sep
oct
nov
dec
0.0
2.1
4.3
6.4
8.5
10.6
12.8
14.9
17.0
11.7
10.9
10.3
8.6
9.0
9.1
8.8
9.0
10.1
11.1
12.4
11.7
10.9
10.3
8.6
9.0
9.1
8.8
9.0
10.1
11.1
12.4
11.3

The average wind speed value in January is 11.3 mph It makes January one of the most windy months of the year.

Average sunny hours
jan
feb
mar
apr
may
jun
jul
aug
sep
oct
nov
dec
0.0
1.7
3.4
5.1
6.8
8.5
10.2
11.9
13.6
2.1
2.8
4.7
6.8
8.5
8.5
10.0
7.7
6.6
5.3
4.0
2.1
2.8
4.7
6.8
8.5
8.5
10.0
7.7
6.6
5.3
4.0
3.0

This chart shows average number of hours during the day when sunlight can reach the ground. It depends on day length and cloudiness during the day. The average number of sunny hours in January is: 3.0.

Best time for vacation in Rotterdam

Sunniest months:
August 12 days
June 12 days
July 11 days
Warmest months:
August 71.4 °F
July 70.8 °F
June 68.2 °F
Warmest sea temp:
August 67.0 °F
July 65.1 °F
September 64.8 °F
Coldest months:
January 43.0 °F
February 44.5 °F
December 45.8 °F
Rainiest months:
January 4 days
August 4 days
December 4 days
Windiest months:
December 13.0 mph
February 12.8 mph
January 12.2 mph

Rotterdam on a weather map

Leaflet | Tiles © Esri
Places in Netherlands:
Name
°F
+50°F
+79°F
+52°F
+48°F
+52°F
+55°F
+52°F
+52°F
+54°F
24 Hours Forecast
Rotterdam
Local time: 13:40
February 22, saturday
1500
52°F
N
11 mph
1800
48°F
E
9 mph
2100
46°F
NE
7 mph
February 23, sunday
0000
45°F
NE
7 mph
0300
43°F
NE
6 mph
0600
41°F
NE
6 mph
0900
43°F
N
7 mph
1200
52°F
NE
11 mph
Units of measurement: °C / °F