Climate and monthly weather forecastHaarlem, Netherlands
Climate and monthly weather forecast
The climate of Haarlem
Haarlem, situated in the Netherlands, is classified under the Köppen climate system as Cfb. This category corresponds to a Marine west coast climate with warm summers. Weather patterns in this scenic city manifest in a relatively mild manner, distinctly characterized by cool to mild temperatures.Throughout an average year, the temperature typically ranges from a low of 3.3°C (37.9°F) to a high of 19.9°C (67.8°F). This mild range illustrates the moderated climate influenced by the nearby North Sea. Relative humidity remains fairly steady from month to month, varying between 76% and 83%. A unique aspect of the climate is the consistency of the 10km (6.2mi) visibility throughout most of the year, dropping slightly to 9km (5.6mi) only in December.
Rainfall in Haarlem is well distributed across the year, though the city receives a volume of 38mm (1.5") in July and peaks at 48mm (1.89") in August; These two months also hold the highest number of rainy days at 15 and 17.2 days respectively. Interestingly, this coincides with the warmest period of the year and the most abundant levels of daylight, averaging 16.2 hours in July and 14.6 hours in August.
The best time to visit Haarlem
The month of June marks the start of the best time to visit Haarlem, offering optimal weather conditions. Temperatures peak at a pleasant 17°C (62.6°F), and the sun shines for an average of 10.2 hours per day; the highest sunshine duration of the entire year. While rainfall is present, the showers bring a refreshing change and keep the city's parks in vibrant bloom.July and August bring warmer temperatures, reaching up to 19°C (66.2°F) and 19.9°C (67.8°F). In August, daylight hours reach up to 14.6 hours, providing plenty of time to experience Haarlem's rich culture, striking architecture, and beautiful canal views.
The worst time to visit Haarlem
January and February are considered less favorable for visiting Haarlem. During these months, temperatures can plummet to 3.6°C (38.5°F) and 3.3°C (37.9°F) respectively, and snowfall, though seldom at 6mm (0.24") and 9mm (0.35"), can present itself. The city experiences its highest wind speeds, reaching up to 26.5km/h (16.5mph) and 25.9km/h (16.1mph) during these months, adding to the perception of cold.Moreover, these months only offer 3.5 and 4.1 hours of sunshine per day, the quantity being considerably lower compared to the rest of the year.
Spring weather in Haarlem
Spring in Haarlem runs from March to May. It starts with an average high temperature of 8.2°C (46.8°F) in March and peaks at 13.9°C (57°F) by May. Nights can still be chilly at the start of the season, averaging 4.8°C (40.6°F) in March, rising to a milder 10°C (50°F) in May.The amount of daylight increases significantly, from 11.9 hours in March to 15.8 hours in May. Furthermore, the frequency of sunshine per day enhances considerably across the season, with an average of 6.1 hours in March, extending to 8.6 hours by May.
Summer weather in Haarlem
Summer in Haarlem is mild and inviting from June to August. Average temperatures hover between 17°C (62.6°F) to 19.9°C (67.8°F), and nights rarely go below 15.6°C (60.1°F). Despite being the wettest period, these showers are mostly light and do not disrupt outdoor activities.Long daylight hours are another positive aspect of summer. The duration ranges from 16.7 hours in June to 14.6 hours in August. This period is perfect for exploring the historic city, its bustling markets, and scenic canals.
Autumn weather in Haarlem
Autumn in Haarlem unfolds from September to November, marking a gradual transition in weather. Temperatures dip from 17.7°C (63.9°F) in September to a cooler 10.3°C (50.5°F) by November. Night temperatures also drop, from 14.5°C (58.1°F) in September to 8°C (46.4°F) in November.However, the daylight hours remain generous, offering between 11.4 hours and 9.3 hours across this period. While rainfall during these months is comparable to the rest of the year, the frequency of sunny days decreases.
Winter weather in Haarlem
Winter in Haarlem, lasting from December to February, is considered the off-season due to the colder temperatures ranging from a high of 7.7°C (45.9°F) to a low of 3.3°C (37.9°F). Snowfall, though minimal, ranges from 2mm (0.08") in February to 6mm (0.24") in December and January.Daylight hours are significantly reduced, from 8.8 hours in December to a low of 7.8 hours in January, the shortest of the year. Despite these conditions, the ambiance in and around Haarlem remains charming, making it an interesting time for those attracted to enjoy the winter scenery.
Weather in January
January's weather in Haarlem, Netherlands, marks the commencement of the year with temperatures dropping as low as 3.6°C (38.5°F). Crisp cold weather pervades and frosty winds affect the ambiance from time to time. Chill winter conditions are further amplified by solidified rain known as snowfall, adding a layer of white serenity to the cityscape. Weather in January »Weather in February
The chill of January persists in February in Haarlem, though the severity marginally recedes. Compared to January, the frequency of rainfall declines in February, hinting at a phase of slightly dry climate. The late-February days see the sun breaking through the clouds more frequently, an indication of the transitioning weather. Weather in February »Weather in March
March sees the weather in Haarlem making steady strides towards warmer conditions. As the city embraces the arrival of spring, the overpowering chill of winters recedes. The blooming floral hues complement the azure skies and longer daylight hours. Weather in March »Weather in April
April brings a definitive spring air to Haarlem, with temperatures beginning to hover around 11.3°C (52.3°F). Marking a discernible departure from the cold winds of the winter months, the city basks in significantly mild weather conditions. Weather in April »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. Weather in May »Weather in June
June signals the definitive arrival of summer in Haarlem with temperatures peaking around a comfortable 17°C (62.6°F). Bright, sunny days dictate the mood of the city contrasting the overcast winter months. Extravagant sunlight spanning an average of 16.7 hours daily invites all for outdoor recreations and waterfront activities. Weather in June »Weather in July
July, the profundity of summer in Haarlem, has the temperature soaring to a sweltering 19°C (66.2°F). Sunlight bathes the city to its fullest intensity. Open-air destinations turn vibrant, being the hub of activities, owing largely to the longest daylight hours compared to other months. Weather in July »Weather in August
The warmth persists in Haarlem throughout August, the city experiencing its highest annual temperature at 19.9°C (67.8°F). Distinct summer traits continue to govern the weather, with significantly longer days and shorter nights. Weather in August »Weather in September
In September, Haarlem, begins to transition away from the summer radiance, with temperatures dipping to around 17.7°C (63.9°F). Signs of autumn's arrival start emerging as leaves turn hues and fall. However, the afternoons continue to retain some warmth, creating a unique combination of conditions. Weather in September »Weather in October
October ushers in autumn completely in Haarlem, as temperatures average around 14.6°C (58.3°F). Bright-hued fall foliage creates a captivating visual, enriched by the yet relatively sunlit days. A cool breeze replaces the previous summer warmth, adds a crispness to the air. Weather in October »Weather in November
November in Haarlem puts the city into the grip of a cold wave, as the chill in the air intensifies, the temperature falling to 10.3°C (50.5°F). The splendid fall hues start to fade, surrendering the landscape to winter’s Spartan beauty. Weather in November »Weather in December
December brings the full force of winter to Haarlem, with the mercury going down to 7.7°C (45.9°F). Short days and long, frosty nights become the new normal, owing to the tilt of the Earth's axis. Snowfall returns, dusting the cityscape with white and creating a sublime winter spectacle. Weather in December »Updated: Jan 25, 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 and February are known as Haarlem's coldest months, with an average high-temperature of 5.8°C (42.4°F).
The months with the highest humidity are January and December, with an average relative humidity of 83%.
Throughout the year, in Haarlem, there are 169.2 rainfall days, and 339mm (13.35") of precipitation is accumulated.
Months with snowfall are January through March and December.
Throughout the year, there are 7.7 snowfall days, and 23mm (0.91") of snow is accumulated.
January, February, November and December, with an average maximum UV index of 2, are months with the lowest UV index.
February is the month with the most snowfall. Snow falls for 2.7 days and accumulates 9mm (0.35") of snow.
April is the month with the least rainfall. Rain falls for 10.6 days and accumulates 11mm (0.43") of precipitation.
April through November are months without snowfall in Haarlem.
The month with the longest days is June, with an average of 16h and 42min of daylight.
The month with the most sunshine in Haarlem, Netherlands, is June, with an average of 10.2h of sunshine.
June through August, with an average maximum UV index of 5, are months with the highest UV index in Haarlem, Netherlands.
Haarlem's temperatures peak on average in August, reaching 19.9°C (67.8°F) at their highest and 16.6°C (61.9°F) at their lowest.
August is the least humid month in Haarlem, with an average relative humidity of 76%.
August is the month with the most rainfall in Haarlem. Rain falls for 17.2 days and accumulates 48mm (1.89") of precipitation.
On Sunday, 27. October 2024, at 03:00, Daylight Saving Time ends in Haarlem, 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 of 7h and 48min of daylight, December has the shortest days of the year in Haarlem, Netherlands.
With an average of 3.4h of sunshine, December has the least sunshine of the year in Haarlem.
Average temperature
Haarlem, Netherlands
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).
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
Haarlem, Netherlands
- Average pressure in January:
1014.3mbar - Average pressure in February:
1013.8mbar - Average pressure in March:
1015.4mbar - Average pressure in April:
1015.9mbar - Average pressure in May:
1016.5mbar - Average pressure in June:
1016.1mbar
- Average pressure in July:
1015.1mbar - Average pressure in August:
1014.8mbar - Average pressure in September:
1016.6mbar - Average pressure in October:
1015.3mbar - Average pressure in November:
1010.9mbar - Average pressure in December:
1013.9mbar
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
Haarlem, Netherlands
- Average wind speed in January:
26.5km/h - Average wind speed in February:
25.9km/h - Average wind speed in March:
22.5km/h - Average wind speed in April:
18.6km/h - Average wind speed in May:
18.7km/h - Average wind speed in June:
18.4km/h
- Average wind speed in July:
18km/h - Average wind speed in August:
18.8km/h - Average wind speed in September:
20.3km/h - Average wind speed in October:
23.5km/h - Average wind speed in November:
25.1km/h - Average wind speed in December:
28.4km/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
Haarlem, Netherlands
The months with the highest relative humidity are January and December (83%).
The month with the lowest relative humidity is August (76%).
Average rainfall
Haarlem, Netherlands
The wettest month (with the highest rainfall) is August (48mm).
The driest month (with the least rainfall) is April (11mm).
Average rainfall days
Haarlem, Netherlands
- Average rainfall days in January:
14.8 days - Average rainfall days in February:
11.3 days - Average rainfall days in March:
11.1 days - Average rainfall days in April:
10.6 days - Average rainfall days in May:
11.9 days - Average rainfall days in June:
12.7 days
- Average rainfall days in July:
15 days - Average rainfall days in August:
17.2 days - Average rainfall days in September:
15.2 days - Average rainfall days in October:
16.1 days - Average rainfall days in November:
16.3 days - Average rainfall days in December:
17 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
Haarlem, Netherlands
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
Haarlem, Netherlands
- Average snowfall days in January:
2.2 days - Average snowfall days in February:
2.7 days - Average snowfall days in March:
0.8 days - Average snowfall days in April:
0 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:
0.2 days - Average snowfall days in December:
1.8 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 / Average sunshine
Haarlem, Netherlands
- Average daylight in January:
8h and 18min - Average daylight in February:
9h and 54min - Average daylight in March:
11h and 54min - Average daylight in April:
14h and 0min - Average daylight in May:
15h and 48min - Average daylight in June:
16h and 42min
- Average daylight in July:
16h and 12min - Average daylight in August:
14h and 36min - Average daylight in September:
12h and 42min - Average daylight in October:
10h and 36min - Average daylight in November:
8h and 48min - Average daylight in December:
7h and 48min
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 January:
3h and 30min - Average sunshine in February:
4h and 6min - Average sunshine in March:
6h and 6min - Average sunshine in April:
8h and 30min - Average sunshine in May:
8h and 36min - Average sunshine in June:
10h and 12min
- Average sunshine in July:
10h and 0min - Average sunshine in August:
9h and 18min - Average sunshine in September:
7h and 0min - Average sunshine in October:
4h and 48min - Average sunshine in November:
3h and 54min - Average sunshine in December:
3h and 24min
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
Haarlem, Netherlands
- Average sunshine days in January:
11.8 days - Average sunshine days in February:
12 days - Average sunshine days in March:
17.4 days - Average sunshine days in April:
17.7 days - Average sunshine days in May:
16.2 days - Average sunshine days in June:
15.6 days
- Average sunshine days in July:
13.1 days - Average sunshine days in August:
11.3 days - Average sunshine days in September:
11.4 days - Average sunshine days in October:
10.7 days - Average sunshine days in November:
9.3 days - Average sunshine days in December:
9.1 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
Haarlem, 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
Haarlem, Netherlands
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
Haarlem, Netherlands
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).
