Climate and monthly weather forecastRotterdam, Netherlands
Climate and monthly weather forecast
The climate of Rotterdam
Located in the Netherlands, Rotterdam experiences a marine west coast and warm summer climate, identified by the Köppen climate classification as Cfb. A city where each season offers a distinct backdrop, with considerable precipitation throughout the year and mild, if somewhat unpredictable, temperatures.While annual highs fluctuate from 5.6°C (42.1°F) in January to a comfortable 22°C (71.6°F) in July and August, cooler temperatures remain consistent, dropping to the lower range of 2.3°C (36.1°F) to 4.2°C (39.6°F) in February and December respectively. This moderate temperature range is complemented by the city's relatively high relative humidity, ranging from 73% in April to 85% in December.
Notably, the city experiences a significant volume of precipitation, with rainfall ranging from 9mm (0.35") in April to 24mm (0.94") in June. Weather conditions in Rotterdam are far from static, however, with an average of 11 to 13.8 rainy days per month, indicating a frequent, if not necessarily heavy, amount of rainfall.
Interestingly, the city does witness snowfall although it's limited mostly to the winter months, with the highest snowfall of 19mm (0.75") occurring in February. Daylight hours are predictably longer during the summer months, reaching up to 16.6 hours in June before retracting to a minimum of 7.9 hours by December.
The best time to visit Rotterdam
Travel planning should always factor in the desired activities, but considering the mild year-round climate, visiting Rotterdam can be a pleasant experience in most months. However, if maximum daylight is a consideration, June offers the longest days with an average of 16.6 daylight hours, coupled with 9.8 hours of sunshine. Not to mention, a relatively low wind speed of 14.1km/h (8.8mph) contributing to warmer temperatures. Furthermore, the temperature ranges from 16.8°C (62.2°F) to 19.7°C (67.5°F) making outdoor activities particularly enjoyable.The worst time to visit Rotterdam
While there's no particularly inclement time to visit, the cooler and darker months between November and February may provide less favourable weather conditions. With high rainfall, limited daylight hours, and colder temperatures that dip as low as 2.3°C (36.1°F), these months may prove challenging for those unaccustomed to cooler climates.Spring weather in Rotterdam
The period from March to May marks the arrival of spring in Rotterdam, with steadily rising temperatures of about 9.9°C (49.8°F) to 16.8°C (62.2°F). Throughout this season, the level of rainfall generally remains modest, ranging from 9mm (0.35") to 18mm (0.71"). With increasing daylight hours, reaching from 8.4 hours in March to a pleasant 15.7 hours in May, it's a delightful period for sightseeing or relishing the city's spring bloom.Summer weather in Rotterdam
June ushers in the summer months, bringing warmer temperatures from 18.7°C (65.7°F) up to 22°C (71.6°F) in July and August. The season experiences the highest amount of daylight, peaking at about 16.2 to 16.6 hours with ample sunshine. Despite the slight increase in rainfall, showcasing the highest level of 24mm (0.94") in June, the mild and warm weather conditions make this the favourite season for many visitors.Autumn weather in Rotterdam
Autumn descends upon the city in September, introducing a gradual drop in temperatures from 18.7°C (65.7°F) to 10°C (50°F) by November. While rainfall is fairly uniform at about 13mm (0.51") to 15mm (0.59") throughout these months, the daylight hours slowly recede from 12.7 hours to a shorter 8.8 hours in November. However, the changing foliage makes this period visually compelling, with fewer visitors in the backdrop.Winter weather in Rotterdam
The winter months of December to February are the coldest, with temperatures dropping between 5.6°C (42.1°F) and 7.2°C (45°F). This season witnesses reduced daylight hours, limited to an average of 7.9 to 8.4 hours, and moderate snowfall with a high of 19mm (0.75") in February. Despite the chilliness and reduced visibility, the bustling winter markets and festive spirit make this a beautiful time in Rotterdam.Weather in January
Entering the year, Rotterdam's weather is characterized by cold temperatures and relatively high humidity, setting the stage for possible snowfall. A cloak of clouds typically covers the city, limiting the daylight hours. A notable weather feature in January is the snowfall amounting to 8mm (0.31") over 2.1 days, representing one of only three months to see any snow at all. Weather in January »Weather in February
As the calendar flips into February, there's a modest rise in temperature, but the specter of a wintry chill still lingers in Rotterdam. Further borrowing from January, February hosts snowfall and increased rainfall compared to the preceding month. Weather in February »Weather in March
March nudges the city of Rotterdam towards Spring capturing warmer temperatures and the city sees a decline in cloud cover allowing for more sunshine hours. March marks an important transitional period with the last traces of snow melting away and a significant reduction in pressure. Weather in March »Weather in April
April unveils a more radiant and warmer Rotterdam as the dreary winter curtain finally rises. The increase in temperature is accompanied by a decrease in rainfall and an uptick in sunlight hours showing the full bloom of Spring. Although, overall, there's a drop in rainfall from March to April, the city still hosts nearly 10 days of rain this month. Weather in April »Weather in May
May rings in the melody of fairer weather creating an ideal setting for outdoor enthusiasts in Rotterdam. The characteristic humidity is still present even though the skies are clearer and the sun shines brighter. May's weather definition extends to include an additional 2.5°C (36.5°F) in highs compared to April, reaching up to 16.8°C (62.2°F). Weather in May »Weather in June
June marches forward with increasing temperatures, marking the onset of summer in Rotterdam. Coinciding with the trend of rising temperature, sunny hours also peak setting up a perfect landscape for sun-seeking visitors and locals alike. Weather in June »Weather in July
In July, Rotterdam finds itself in the heart of the summer season, featuring the most elevated temperatures of the year. The extended daylight hours allow residents and tourists to make the most out of their summer activities. Interestingly, the month of July has the year's highest number of rainy days at 13.8. Weather in July »Weather in August
August in Rotterdam is characterized by a mild weather pattern, despite summer being at its tail-end. The stubble of warm days amplifies the lingering essence of sun-bathed landscapes evocative of the summer spectacle. While temperatures continue to hover around summer highs, this month sees 15.3°C (59.5°F) as the lowest temperature. Weather in August »Weather in September
September invites a subtle shift in Rotterdam's weather, hinting at the oncoming fall while still clutching to the remnants of summer. It is a month of blend - the decreasing temperatures are still complemented by extended hours of sunshine. Weather in September »Weather in October
October brings along an unmistakable hint of winter in Rotterdam as the city delves into cooler weather. The month is characterized by brisk winds, greater cloud cover and a noticeable decrease in daylight hours, painting the city with a palette of autumn. Weather in October »Weather in November
November commemorates the commencement of Rotterdam's winter narrative with a notable plunge in temperature. The city faces a decrease in sunlight hours, alongside an upswing in wind speeds contributing to the chilly scenario. Weather in November »Weather in December
By December, winter has cemented its place in Rotterdam, echoed in the shortened daylight hours and cooler, rainy days. As the year draws to a close, the city is mantled by cloud coverage, further reducing the limited sunlight hours. Weather in December »Updated: Jan 24, 2024
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
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).
Throughout the year, there are 130.3 rainfall days, and 205mm (8.07") of precipitation is accumulated.
January through March, November and December are months with snowfall in Rotterdam.
In Rotterdam, during the entire year, snow falls for 7.4 days and aggregates up to 36mm (1.42") of snow.
The months with the lowest UV index are January, February, November and December, with an average maximum UV index of 2.
February is the month with the most snowfall in Rotterdam. Snow falls for 2.2 days and accumulates 19mm (0.75") of snow.
April is the least humid month in Rotterdam, with an average relative humidity of 73%.
The month with the least rainfall in Rotterdam is April, when the rain falls for 9.5 days and typically collects 9mm (0.35") of precipitation.
April through October are months without snowfall in Rotterdam, Netherlands.
June is the month with the most rainfall in Rotterdam. Rain falls for 11.3 days and accumulates 24mm (0.94") of precipitation.
With an average of 16h and 36min of daylight, June has the longest days of the year in Rotterdam, Netherlands.
With an average of 9.8h of sunshine, June has the most sunshine of the year.
The months with the highest UV index are June through August, with an average maximum UV index of 5.
Rotterdam sees its peak of temperatures during July and August, with an average high-temperature of 22°C (71.6°F).
On Sunday, 27. October 2024, at 03:00, Daylight Saving Time ends, and the time zone changes from CEST to CET. The next Daylight Saving Time starts on Sunday, 30. March 2025, at 02:00, and the time zone reverts from CET to CEST.
With an average relative humidity of 85%, December is the most humid month in Rotterdam, Netherlands.
December has the shortest days of the year in Rotterdam, with an average of 7h and 54min of daylight.
December has the least sunshine of the year in Rotterdam, with an average of 3.5h of sunshine.
Average temperature
Rotterdam, Netherlands
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).
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).
Average pressure
Rotterdam, Netherlands
- Average pressure in January:
1014.9mbar - Average pressure in February:
1014.3mbar - Average pressure in March:
1015.6mbar - Average pressure in April:
1015.9mbar - Average pressure in May:
1016.6mbar - Average pressure in June:
1016.2mbar
- Average pressure in July:
1015.3mbar - Average pressure in August:
1015.1mbar - Average pressure in September:
1017mbar - Average pressure in October:
1015.7mbar - Average pressure in November:
1011.4mbar - Average pressure in December:
1014.7mbar
The month with the highest atmospheric pressure is September (1017mbar).
The month with the lowest atmospheric pressure is November (1011.4mbar).
Average wind speed
Rotterdam, Netherlands
- Average wind speed in January:
19.3km/h - Average wind speed in February:
19.6km/h - Average wind speed in March:
17.3km/h - Average wind speed in April:
14.4km/h - Average wind speed in May:
14.5km/h - Average wind speed in June:
14.1km/h
- Average wind speed in July:
13.6km/h - Average wind speed in August:
13.6km/h - Average wind speed in September:
14km/h - Average wind speed in October:
16km/h - Average wind speed in November:
17.7km/h - Average wind speed in December:
20.2km/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).
Average humidity
Rotterdam, Netherlands
The month with the highest relative humidity is December (85%).
The month with the lowest relative humidity is April (73%).
Average rainfall
Rotterdam, Netherlands
The wettest month (with the highest rainfall) is June (24mm).
The driest month (with the least rainfall) is April (9mm).
Average rainfall days
Rotterdam, Netherlands
- Average rainfall days in January:
11 days - Average rainfall days in February:
8.5 days - Average rainfall days in March:
11.8 days - Average rainfall days in April:
9.5 days - Average rainfall days in May:
11.9 days - Average rainfall days in June:
11.3 days
- Average rainfall days in July:
13.8 days - Average rainfall days in August:
12.1 days - Average rainfall days in September:
9.4 days - Average rainfall days in October:
10.4 days - Average rainfall days in November:
9.6 days - Average rainfall days in December:
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).
Average snowfall
Rotterdam, Netherlands
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).
Average snowfall days
Rotterdam, Netherlands
- Average snowfall days in January:
2.1 days - Average snowfall days in February:
2.2 days - Average snowfall days in March:
0.6 days - Average snowfall days in April:
0.3 days - Average snowfall days in May:
0 days - Average snowfall days in June:
0 days
- Average snowfall days in July:
0 days - Average snowfall days in August:
0 days - Average snowfall days in September:
0 days - Average snowfall days in October:
0 days - Average snowfall days in November:
0.3 days - Average snowfall days in December:
1.9 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).
Average daylight / Average sunshine
Rotterdam, Netherlands
- Average daylight in January:
8h and 24min - Average daylight in February:
10h and 0min - Average daylight in March:
11h and 54min - Average daylight in April:
13h and 54min - Average daylight in May:
15h and 42min - Average daylight in June:
16h and 36min
- Average daylight in July:
16h and 12min - Average daylight in August:
14h and 36min - Average daylight in September:
12h and 36min - Average daylight in October:
10h and 36min - Average daylight in November:
8h and 48min - Average daylight in December:
7h and 54min
The month with the longest days is June (Average daylight: 16h and 36min).
The month with the shortest days is December (Average daylight: 7h and 54min).
- Average sunshine in January:
3h and 42min - Average sunshine in February:
4h and 12min - Average sunshine in March:
5h and 54min - Average sunshine in April:
8h and 18min - Average sunshine in May:
8h and 30min - Average sunshine in June:
9h and 48min
- Average sunshine in July:
9h and 36min - Average sunshine in August:
9h and 12min - Average sunshine in September:
7h and 6min - Average sunshine in October:
4h and 54min - Average sunshine in November:
4h and 0min - Average sunshine in December:
3h and 30min
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).
Average sunshine days
Rotterdam, Netherlands
- Average sunshine days in January:
16.2 days - Average sunshine days in February:
14.4 days - Average sunshine days in March:
15.8 days - Average sunshine days in April:
17.5 days - Average sunshine days in May:
14.7 days - Average sunshine days in June:
13.8 days
- Average sunshine days in July:
13 days - Average sunshine days in August:
13.8 days - Average sunshine days in September:
17.3 days - Average sunshine days in October:
16.7 days - Average sunshine days in November:
16.5 days - Average sunshine days in December:
15 days
The month with the most sunshine days is April (17.5 days).
The month with the least sunshine days is July (13 days).
Average UV index
Rotterdam, Netherlands
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).
Average cloud cover
Rotterdam, Netherlands
The month with the most cloud cover is December (Cloud cover 66).
The month with the least cloud cover is August (Cloud cover 40).
Average visibility
Rotterdam, Netherlands
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).
