April weather forecast and climate
Rotterdam, Netherlands

An old ship dock in Rotterdam, Netherlands, overlooking the Williamsburg Bridge and the famous Openlucht Binnenvaart museum
An old ship dock in Rotterdam, Netherlands, overlooking the Williamsburg Bridge and the famous Openlucht Binnenvaart museum

Weather in April

April in Rotterdam, Netherlands, is a mild spring month, with average temperature varying between 14.3°C (57.7°F) and 6.8°C (44.2°F).

Temperature

In April, the average high-temperature marginally rises, from a chilly 9.9°C (49.8°F) in March, to a mild 14.3°C (57.7°F). In April, in Rotterdam, the average low-temperature is 6.8°C (44.2°F).

Humidity

The least humid month in Rotterdam is April, with an average relative humidity of 73%.

Rainfall

The month with the least rainfall is April when the rain falls for 9.5 days and typically collects 9mm (0.35") of precipitation.

Snowfall

April through October are months without snowfall in Rotterdam.

Daylight

The average length of the day in Rotterdam is 13.9h.

Sunshine

In April, the average sunshine in Rotterdam is 8.3h.

UV index

In Rotterdam, Netherlands, the average daily maximum UV index in April is 3. A UV Index reading of 3 to 5 represents a moderate threat to health from unprotected exposure to the Sun's UV rays for the ordinary person.
Note: In April, the average maximum UV index of 3 translate into the following recommendations:
Take precautions - Protection against the skin and eye damage is obliged. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. A wide-brim hat offers excellent sun protection for eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure. Tightly woven, loose-fitting clothes provide additional protection from the Sun. Beware! The strength of the UV rays is increased nearly double-fold by the reflection of the snow.
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FAQ

What is the least humid month in Rotterdam?

The least humid month in Rotterdam, Netherlands, is April, with an average relative humidity of 73%.

What is the average humidity in April in Rotterdam?

In Rotterdam, the average relative humidity in April is 73%.

What is the driest month in Rotterdam?

April is the month with the least rainfall in Rotterdam, Netherlands. Rain falls for 9.5 days and accumulates 9mm (0.35") of precipitation.

How many days does it rain in April in Rotterdam?

In April, in Rotterdam, Netherlands, the rain falls for 9.5 days. Throughout April, 9mm (0.35") of precipitation is accumulated.

When it does not snow in Rotterdam?

April through October are months without snowfall in Rotterdam.

Does it snow in Rotterdam in April?

In April, in Rotterdam, Netherlands, it doesn't snow. March is the latest month when it typically snows.

What is the average length of the day in April in Rotterdam?

In April, the average length of the day in Rotterdam, Netherlands, is 13.9h.

How long on average sun shines in April in Rotterdam?

The average sunshine in April in Rotterdam is 8.3h.

What is the UV index reading in April in Rotterdam?

In Rotterdam, the average daily maximum UV index in April is 3. A UV Index value of 3 to 5 symbolizes a medium health risk from the exposure to the Sun's UV radiation.

Average temperature in April
Rotterdam, Netherlands

Average temperature in April - Rotterdam, Netherlands
  • Average high temperature in April: 14.3°C

The warmest months (with the highest average high temperature) are July and August (22°C).
The month with the lowest average high temperature is January (5.6°C).

  • Average low temperature in April: 6.8°C

The month with the highest average low temperature is August (15.3°C).
The coldest month (with the lowest average low temperature) is February (2.3°C).

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Average pressure in April
Rotterdam, Netherlands

Average pressure in April - Rotterdam, Netherlands
  • Average pressure in April: 1015.9mbar

The month with the highest atmospheric pressure is September (1017mbar).
The month with the lowest atmospheric pressure is November (1011.4mbar).

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Average wind speed in April
Rotterdam, Netherlands

Average wind speed in April - Rotterdam, Netherlands
  • Average wind speed in April: 14.4km/h

The windiest month (with the highest average wind speed) is December (20.2km/h).
The calmest months (with the lowest average wind speed) are July and August (13.6km/h).

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Average humidity in April
Rotterdam, Netherlands

Average humidity in April - Rotterdam, Netherlands
  • Average humidity in April: 73%

The month with the highest relative humidity is December (85%).
The month with the lowest relative humidity is April (73%).

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Average rainfall in April
Rotterdam, Netherlands

Average rainfall in April - Rotterdam, Netherlands
  • Average rainfall in April: 9mm

The wettest month (with the highest rainfall) is June (24mm).
The driest month (with the least rainfall) is April (9mm).

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Average rainfall days in April
Rotterdam, Netherlands

Average rainfall days in April - Rotterdam, Netherlands
  • Average rainfall days in April: 9.5 days

The month with the highest number of rainy days is July (13.8 days).
The month with the least rainy days is February (8.5 days).

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Average snowfall in April
Rotterdam, Netherlands

Average snowfall in April - Rotterdam, Netherlands
  • Average snowfall in April: 0mm

The month with the highest snowfall is February (19mm).
Months with the least snowfall are April, May, June, July, August, September and October (0mm).

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Average snowfall days in April
Rotterdam, Netherlands

Average snowfall days in April - Rotterdam, Netherlands
  • Average snowfall days in April: 0.3 days

The month with the highest number of snowfall days is February (2.2 days).
Months with the least snowfall days are May, June, July, August, September and October (0 days).

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Average daylight in April /
Average sunshine in April
Rotterdam, Netherlands

Average daylight in April / Average sunshine in April - Rotterdam, Netherlands
  • Average daylight in April: 13.9h

The month with the longest days is June (Average daylight: 16.6h).
The month with the shortest days is December (Average daylight: 7.9h).

  • Average sunshine in April: 8.3h

The month with the most sunshine is June (Average sunshine: 9.8h).
The month with the least sunshine is December (Average sunshine: 3.5h).

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Average sunshine days in April
Rotterdam, Netherlands

Average sunshine days in April - Rotterdam, Netherlands
  • Average sunshine days in April: 17.5 days

The month with the most sunshine days is April (17.5 days).
The month with the least sunshine days is July (13 days).

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Average UV index in April
Rotterdam, Netherlands

Average UV index in April - Rotterdam, Netherlands
  • Average UV index in April: 3

Months with the highest UV index are June, July and August (UV index 5).
Months with the lowest UV index are January, February, November and December (UV index 2).

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Average cloud cover in April
Rotterdam, Netherlands

Average cloud cover in April - Rotterdam, Netherlands
  • Average cloud cover in April: 41

The month with the most cloud cover is December (Cloud cover 66).
The month with the least cloud cover is August (Cloud cover 40).

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Average visibility in April
Rotterdam, Netherlands

Average visibility in April - Rotterdam, Netherlands
  • Average visibility in April: 10km

Months with the highest visibility are April, May, June and August (10km).
Months with the lowest visibility are January, February, March, July, September, October, November and December (9km).

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