May weather forecast
Haarlem, Netherlands

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Weather in May

As Haarlem steps into May, the warmth in the climate escalates and mercury reaches about 13.9°C (57°F). The advance into summer is evident, accompanied by a temperate aura blended with the residual traces of spring. The daylight hours extend, presenting more sunlit time enhancing the brightness and vivacity of the city. Despite the infrequent rains, the overall climate ensures comfort and points towards stable summer conditions. As May concludes, anticipation builds for the onset of bright, sunny days.

Temperature

As April transitions into May, the average high-temperature rests at a refreshing 13.9°C (57°F), maintaining a close resemblance to the previous month. During the May nights, Haarlem's temperature maintains an average close to the daytime highs, settling at a cool 10°C (50°F).

Humidity

The average relative humidity in May in Haarlem is 78%.

Rainfall

In May, the rain falls for 11.9 days. Throughout May, 19mm (0.75") of precipitation is accumulated. Throughout the year, there are 169.2 rainfall days, and 339mm (13.35") of precipitation is accumulated.

Snowfall

In Haarlem, snow does not fall in April through November.

Daylight

The average length of the day in May is 15h and 46min.
On the first day of the month, sunrise is at 06:09 and sunset at 21:07. On the last day of May, sunrise is at 05:25 and sunset at 21:52 CEST.

Sunshine

The average sunshine in May is 8.6h.

UV index

In Haarlem, the average daily maximum UV index in May is 4. A UV Index reading of 3 to 5 represents a moderate health risk from unsafe exposure to UV radiation for the average person.
Note: The maximum daily UV index of 4 in May converts into the following recommendations:
Take care. Persons with lighter skin might suffer burns in less than 30 minutes. Avoiding the Sun's peak radiation during midday hours is essential for health and safety. Your best bet for sun defense on the face, eyes, and neck is a hat with a wide brim.

Frequently asked questions

What are the temperatures in Haarlem in May?

During May, Haarlem experiences an average high-temperature of 13.9°C (57°F) and a low-temperature of 10°C (50°F).

What is the average humidity in May in Haarlem?

In Haarlem, the average relative humidity in May is 78%.

How many days does it rain in May in Haarlem?

In Haarlem, in May, during 11.9 rainfall days, 19mm (0.75") of precipitation is typically accumulated.

When it does not snow in Haarlem?

April through November are months without snowfall in Haarlem.

How many hours of daylight does Haarlem have in May?

In May, the average day length in Haarlem is 15h and 46min.

What time are sunrise and sunset in May in Haarlem?

On the first day of May in Haarlem, Netherlands, sunrise is at 06:09 and sunset at 21:07. On the last day of the month, sunrise is at 05:25 and sunset at 21:52 CEST.

How long on average sun shines in May in Haarlem?

The average sunshine duration in May is 8.6h.

How high is the UV index in May in Haarlem?

The average daily maximum UV index in May in Haarlem, Netherlands, is 4. A UV Index value of 3 to 5 symbolizes a medium health risk from unprotected exposure to UV radiation.
Average humidity
Average rainfall days
Average snowfall
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover

Average temperature in May
Haarlem, Netherlands

Average temperature in May - Haarlem, Netherlands
  • Average high temperature in May: 13.9°C

The warmest month (with the highest average high temperature) is August (19.9°C).
The months with the lowest average high temperature are January and February (5.8°C).

  • Average low temperature in May: 10°C

The month with the highest average low temperature is August (16.6°C).
The coldest month (with the lowest average low temperature) is February (3.3°C).

Average pressure in May
Haarlem, Netherlands

Average pressure in May - Haarlem, Netherlands
  • Average pressure in May: 1016.5mbar

The month with the highest atmospheric pressure is September (1016.6mbar).
The month with the lowest atmospheric pressure is November (1010.9mbar).

Average wind speed in May
Haarlem, Netherlands

Average wind speed in May - Haarlem, Netherlands
  • Average wind speed in May: 18.7km/h

The windiest month (with the highest average wind speed) is December (28.4km/h).
The calmest month (with the lowest average wind speed) is July (18km/h).

Average humidity in May
Haarlem, Netherlands

Average humidity in May - Haarlem, Netherlands
  • Average humidity in May: 78%

The months with the highest relative humidity are January and December (83%).
The month with the lowest relative humidity is August (76%).

Average rainfall in May
Haarlem, Netherlands

Average rainfall in May - Haarlem, Netherlands
  • Average rainfall in May: 19mm

The wettest month (with the highest rainfall) is August (48mm).
The driest month (with the least rainfall) is April (11mm).

Average rainfall days in May
Haarlem, Netherlands

Average rainfall days in May - Haarlem, Netherlands
  • Average rainfall days in May: 11.9 days

The month with the highest number of rainy days is August (17.2 days).
The month with the least rainy days is April (10.6 days).

Average snowfall in May
Haarlem, Netherlands

Average snowfall in May - Haarlem, Netherlands
  • Average snowfall in May: 0mm

The month with the highest snowfall is February (9mm).
The months with the least snowfall are April, May, June, July, August, September, October and November (0mm).

Average snowfall days in May
Haarlem, Netherlands

Average snowfall days in May - Haarlem, Netherlands
  • Average snowfall days in May: 0 days

The month with the highest number of snowfall days is February (2.7 days).
The months with the least snowfall days are April, May, June, July, August, September and October (0 days).

Average daylight in May /
Average sunshine in May
Haarlem, Netherlands

Average daylight in May / Average sunshine in May - Haarlem, Netherlands
  • Average daylight in May: 15h and 5min

The month with the longest days is June (Average daylight: 16h and 42min).
The month with the shortest days is December (Average daylight: 7h and 48min).

  • Average sunshine in May: 8h and 4min

The month with the most sunshine is June (Average sunshine: 10h and 12min).
The month with the least sunshine is December (Average sunshine: 3h and 24min).

Average sunshine days in May
Haarlem, Netherlands

Average sunshine days in May - Haarlem, Netherlands
  • Average sunshine days in May: 16.2 days

The month with the most sunshine days is April (17.7 days).
The month with the least sunshine days is December (9.1 days).

Average UV index in May
Haarlem, Netherlands

Average UV index in May - Haarlem, 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
Haarlem, Netherlands

Average cloud cover in May - Haarlem, Netherlands
  • Average cloud cover in May: 42

The month with the most cloud cover is December (Cloud cover 67).
The month with the least cloud cover is August (Cloud cover 39).

Average visibility in May
Haarlem, Netherlands

Average visibility in May - Haarlem, Netherlands
  • Average visibility in May: 10km

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

Haarlem, Netherlands

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