The climate in Rotterdam during January can be summarized as cool and reasonably dry.
January is in the winter in Rotterdam and is typically the coldest month of the year. Daytime maximum temperatures average around a cold 6°C (42°F), whilst at night 1°C (33°F) is normal.
|Daytime temperature||5.5°C 41.8°F|
|Nightly temperature||0.6°C 33°F|
|Average temperature||3°C 37.4°F|
|Daily sunshine||1.6 hrs|
|Avg rainfall||70 mm 2.8 ins|
|Rainy days||19 days|
|Sea temperature||7.3°C 45.1°F|
|Windspeed||21.2kph 13 mph|
On average January is the 6th wettest month of the year in Rotterdam with around 70mm 2.8 inches of rain making it a reasonably dry time to visit. This rainfall is typically spread over 19 days, although this may vary considerably.
On the flip side this corresponds to an average of 1.6 hours of sunshine per day.
The data used in these monthly averages covers a period of over 100 years right up until last year. As such they are a valid prediction of what to expect for the weather in Rotterdam in January 2023.
|Hottest month:||August||21.1°C 70°F|
|Driest month:||April||43mm 1.7ins|
|Coldest month:||January||5.3°C 41.5°F|
|Wettest month:||October||84mm 3.3ins|