January weather forecast
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 January

January, the same as December, is another cold winter month in Rotterdam, Netherlands, with temperature in the range of an average low of 2.7°C (36.9°F) and an average high of 5.6°C (42.1°F).

Temperature

January is the coldest month, with an average high-temperature of 5.6°C (42.1°F) and an average low-temperature of 2.7°C (36.9°F).

Humidity

The average relative humidity in January is 84%.

Rainfall

In Rotterdam, Netherlands, during January, the rain falls for 11 days and regularly aggregates up to 17mm (0.67") of precipitation. In Rotterdam, Netherlands, during the entire year, the rain falls for 130.3 days and collects up to 205mm (8.07") of precipitation.

Snowfall

Months with snowfall in Rotterdam are January through March, November and December. In Rotterdam, during 2.1 snowfall days, 8mm (0.31") of snow is typically accumulated. In Rotterdam, Netherlands, during the entire year, snow falls for 7.4 days and aggregates up to 36mm (1.42") of snow.

Daylight

In January, the average length of the day is 8h and 23min.
On the first day of the month, sunrise is at 08:49 and sunset at 16:41. On the last day of January, in Rotterdam, sunrise is at 08:22 and sunset at 17:28 CET.

Sunshine

In Rotterdam, the average sunshine in January is 3.7h.

UV index

January, February, November and December, with an average maximum UV index of 2, are months with the lowest UV index. A UV Index reading of 2, and below, represents a minimal health vulnerability from exposure to the Sun's UV rays for the ordinary person.
Note: The average daily UV index of 2 in January transform into the following instructions:
Most people can stay in the Sun for up to 1 hour without burning, apart from children that always must be protected from sun exposure. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes. Caution! The reflection of snow can nearly double the intensity of the Sun's UV radiation.
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FAQ

What is the coldest month in Rotterdam?

The coldest month in Rotterdam, Netherlands, is January, with an average high-temperature of 5.6°C (42.1°F) and an average low-temperature of 2.7°C (36.9°F).

What is the temperature in January in Rotterdam?

In January, in Rotterdam, the average high-temperature is 5.6°C (42.1°F), and the average low-temperature is 2.7°C (36.9°F).

What is the average humidity in January in Rotterdam?

In January, the average relative humidity is 84%.

How many days does it rain in January in Rotterdam?

In January, the rain falls for 11 days. Throughout January, 17mm (0.67") of precipitation is accumulated.

How much does it snow in Rotterdam in January?

In Rotterdam, during January, snow falls for 2.1 days and regularly aggregates up to 8mm (0.31") of snow.

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

In January, the average day length in Rotterdam, Netherlands, is 8h and 23min.

What time are sunrise and sunset in January in Rotterdam?

On the first day of January in Rotterdam, sunrise is at 08:49 and sunset at 16:41. On the last day of the month, sunrise is at 08:22 and sunset at 17:28 CET.

How many hours of sunshine does Rotterdam have in January?

The average sunshine duration in January in Rotterdam, Netherlands, is 3.7h.

What are the months with the lowest UV index in Rotterdam?

January, February, November and December, with an average maximum UV index of 2, are months with the lowest UV index in Rotterdam, Netherlands.

What is the UV index intensity in January in Rotterdam?

In Rotterdam, Netherlands, the average daily maximum UV index in January is 2. A UV Index reading of 2, and below, represents a minimal health vulnerability from exposure to Sun's UV rays.
Average humidity
Average rainfall days
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in January
Rotterdam, Netherlands

Average temperature in January - Rotterdam, Netherlands
  • Average high temperature in January: 5.6°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 January: 2.7°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 January
Rotterdam, Netherlands

Average pressure in January - Rotterdam, Netherlands
  • Average pressure in January: 1014.9mbar

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 January
Rotterdam, Netherlands

Average wind speed in January - Rotterdam, Netherlands
  • Average wind speed in January: 19.3km/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 January
Rotterdam, Netherlands

Average humidity in January - Rotterdam, Netherlands
  • Average humidity in January: 84%

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 January
Rotterdam, Netherlands

Average rainfall in January - Rotterdam, Netherlands
  • Average rainfall in January: 17mm

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 January
Rotterdam, Netherlands

Average rainfall days in January - Rotterdam, Netherlands
  • Average rainfall days in January: 11 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 January
Rotterdam, Netherlands

Average snowfall in January - Rotterdam, Netherlands
  • Average snowfall in January: 8mm

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

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Average snowfall days in January
Rotterdam, Netherlands

Average snowfall days in January - Rotterdam, Netherlands
  • Average snowfall days in January: 2.1 days

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

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

Average daylight in January / Average sunshine in January - Rotterdam, Netherlands
  • Average daylight in January: 8h and 23min

The month with the longest days is June (Average daylight: 16h and 38min).
The month with the shortest days is December (Average daylight: 7h and 52min).

  • Average sunshine in January: 3h and 42min

The month with the most sunshine is June (Average sunshine: 9h and 48min).
The month with the least sunshine is December (Average sunshine: 3h and 30min).

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Average sunshine days in January
Rotterdam, Netherlands

Average sunshine days in January - Rotterdam, Netherlands
  • Average sunshine days in January: 16.2 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 January
Rotterdam, Netherlands

Average UV index in January - Rotterdam, Netherlands
  • Average UV index in January: 2

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

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Average cloud cover in January
Rotterdam, Netherlands

Average cloud cover in January - Rotterdam, Netherlands
  • Average cloud cover in January: 63

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 January
Rotterdam, Netherlands

Average visibility in January - Rotterdam, Netherlands
  • Average visibility in January: 9km

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

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