May weather forecastRotterdam, Netherlands
May
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). Despite the warmer temperature, an umbrella might come in handy as rain drizzles down more frequently than April. The wind speed holds steady, perfectly complementing the brighter, longer days.Temperature
In May, the average high-temperature in Rotterdam, Netherlands, registers at a comfortable 16.8°C (62.2°F), nearly identical to April's 14.3°C (57.7°F). In Rotterdam, an average low-temperature of 9.5°C (49.1°F) is recorded during May nights.Humidity
In May, the average relative humidity is 75%.Rainfall
In Rotterdam, in May, during 11.9 rainfall days, 13mm (0.51") of precipitation is typically accumulated. Throughout the year, there are 130.3 rainfall days, and 205mm (8.07") of precipitation is accumulated.Snowfall
April through October are months without snowfall.Daylight
In Rotterdam, the average length of the day in May is 15h and 41min.On the first day of May in Rotterdam, sunrise is at 06:11 and sunset at 21:07. On the last day of the month, sunrise is at 05:28 and sunset at 21:51 CEST.
Sunshine
In Rotterdam, the average sunshine in May is 8.5h.UV index
In May, the average daily maximum UV index in Rotterdam is 4. A UV Index of 3 to 5 symbolizes a medium vulnerability from unsafe exposure to UV radiation for ordinary individuals.Note: The maximum daily UV index, 4 in May, converts into the following recommendations:
Adopt protective measures - Suggestions to resist sunburn are offered. Considering the Sun's intensity during midday, it's wise to minimize direct exposure. Prioritize a wide-brim hat for comprehensive sun defense for your face, neck, eyes, and ears.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in May
Rotterdam, Netherlands
- Average high temperature in May: 16.8°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 May: 9.5°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 in May
Rotterdam, Netherlands
- Average pressure in May: 1016.6mbar
The month with the highest atmospheric pressure is September (1017mbar).
The month with the lowest atmospheric pressure is November (1011.4mbar).
Average wind speed in May
Rotterdam, Netherlands
- Average wind speed in May: 14.5km/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 in May
Rotterdam, Netherlands
- Average humidity in May: 75%
The month with the highest relative humidity is December (85%).
The month with the lowest relative humidity is April (73%).
Average rainfall in May
Rotterdam, Netherlands
- Average rainfall in May: 13mm
The wettest month (with the highest rainfall) is June (24mm).
The driest month (with the least rainfall) is April (9mm).
Average rainfall days in May
Rotterdam, Netherlands
- Average rainfall days in May: 11.9 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 in May
Rotterdam, Netherlands
- Average snowfall in May: 0mm
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 in May
Rotterdam, Netherlands
- Average snowfall days in May: 0 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 in May /
Average sunshine in May
Rotterdam, Netherlands
- Average daylight in May: 15h and 42min
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 May: 8h 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 in May
Rotterdam, Netherlands
- Average sunshine days in May: 14.7 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 in May
Rotterdam, Netherlands
- Average UV index in May: 4
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 in May
Rotterdam, Netherlands
- Average cloud cover in May: 43
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 in May
Rotterdam, Netherlands
- Average visibility in May: 10km
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).
