The highest day temperature in April 2025 was 72°F. The lowest night temperature was 37°F. The average values for day and night temperatures during April were 61.2°F и 45.8°F respectivly.

The average sea surface temperature in April 2025 for Rotterdam was 49.3°F. The maximum and minimum values were 45.8°F and 53.2°F respectively.

You can expect various weather conditions during April. Be ready for sunny, cloudy or even gloomy days.

Precipitation total in April for Rotterdam is 1.0 in. It makes april the least rainy month of the year.

The average wind speed in April is 10.1 mph.

We are using day length and cloud cover information for each day of the month to calculate averages for this chart. Average sunny hours for Rotterdam in April is 7.7 hours.