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Monthly climate in Haarlem, Netherlands

Last updated: July 31, 2025

Under the Köppen–Geiger climate classification Haarlem features a oceanic climate (Cfb). Temperatures typically range between 5 °C (42 °F) and 18 °C (65 °F) through the year, but rarely can drop to -7 °C (19 °F) or can rise to as high as 33 °C (92 °F). The average annual precipitation amounts to about 925 mm (36.4 inches) and receives 162 rainy days on the 1 mm (0.04 inches) threshold annually. Haarlem enjoys an average of 3490 hours of sunshine throughout the year, and daylight varies from 7 hours 44 minutes to 16 hours 43 minutes per day.

Monthly average temperatures in Haarlem, Netherlands

The warmest months in Haarlem are June, July and August, with daily mean temperatures ranging from 17 to 18 °C (62 - 65 °F) throughout the day. The coldest temperatures usually occur in January, February and December, when daily mean temperatures range from 5 to 6 °C (42 - 44 °F) throughout the day. On average each year, Haarlem experiences 7 days above 25 °C (77.0 °F) and 11 days below 0 °C (32.0 °F).

Monthly average temperatures with daily means, minimums and maximums for period, average high and low temperatures in Haarlem. Generated using Copernicus Climate Change Service information. Data for period from January 2017 to June 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Maximum12°C
(55°F)		16°C
(61°F)		17°C
(63°F)		25°C
(77°F)		27°C
(81°F)		30°C
(86°F)		33°C
(92°F)		30°C
(87°F)		27°C
(81°F)		23°C
(74°F)		17°C
(63°F)		13°C
(55°F)
Mean maximum11°C
(52°F)		12°C
(54°F)		15°C
(59°F)		20°C
(67°F)		22°C
(72°F)		25°C
(77°F)		28°C
(82°F)		27°C
(81°F)		24°C
(76°F)		20°C
(69°F)		15°C
(60°F)		12°C
(54°F)
Average high7°C
(44°F)		7°C
(45°F)		9°C
(49°F)		12°C
(54°F)		15°C
(60°F)		19°C
(67°F)		20°C
(69°F)		21°C
(70°F)		18°C
(65°F)		15°C
(59°F)		10°C
(51°F)		8°C
(46°F)
Daily mean5°C
(42°F)		5°C
(42°F)		7°C
(44°F)		9°C
(49°F)		12°C
(55°F)		17°C
(62°F)		18°C
(64°F)		18°C
(65°F)		16°C
(60°F)		13°C
(55°F)		9°C
(48°F)		6°C
(44°F)
Average low4°C
(39°F)		3°C
(38°F)		4°C
(40°F)		6°C
(43°F)		10°C
(49°F)		14°C
(57°F)		15°C
(59°F)		16°C
(61°F)		13°C
(56°F)		11°C
(52°F)		7°C
(44°F)		5°C
(41°F)
Mean minimum-1°C
(31°F)		-2°C
(29°F)		-0°C
(31°F)		2°C
(35°F)		5°C
(41°F)		10°C
(51°F)		12°C
(54°F)		13°C
(55°F)		9°C
(49°F)		6°C
(44°F)		2°C
(36°F)		-1°C
(31°F)
Minimum-4°C
(26°F)		-7°C
(19°F)		-7°C
(19°F)		1°C
(34°F)		4°C
(40°F)		9°C
(48°F)		11°C
(52°F)		11°C
(52°F)		7°C
(45°F)		4°C
(40°F)		0°C
(33°F)		-3°C
(27°F)

Compare climate in Haarlem with other places

Compare temperature, precipitation, sunshine, UV index in Haarlem, Netherlands with other places around the world.

Monthly average precipitation in Haarlem, Netherlands

Haarlem usually has the most precipitation in August, October and December, with an average of 16 rainy days and 106 mm (4.2 inches) of precipitation per month. The driest months in Haarlem are January, April and May. On average, 53 mm (2.1 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in Haarlem. Generated using Copernicus Climate Change Service information. Data for period from January 2017 to January 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Average precipitation mm (inches)62 (2.4)71 (2.8)71 (2.8)43 (1.7)54 (2.1)74 (2.9)73 (2.9)99 (3.9)93 (3.7)115 (4.5)65 (2.6)105 (4.1)
Average precipitation days (≥ 1 mm)131214101111141512171518

Monthly sunshine hours in Haarlem, Netherlands

The sunniest months in Haarlem are May, June and July, when the sun shines an average of 13 hours 32 minutes a day. Least sunny months in Haarlem: January, November and December receive an average of 4 hours 46 minutes of sunshine daily.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in Haarlem. Generated using Copernicus Atmosphere Monitoring Service information. Data for period from January 2017 to January 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Mean monthly sunshine hours113198283361412411422396326238192133
Mean daily daylight hours8h 15m9h 54m11h 54m13h 58m15h 46m16h 43m16h 12m14h 35m12h 36m10h 33m8h 43m7h 44m

Solar UV radiation in Haarlem, Netherlands

Haarlem experiences the highest level of ultraviolet (UV) radiation in June, July and August, when the maximum UV index can reach values of 7 - 8, which corresponds to the High / Very High category of sun exposure. January, February and December are in the Low exposure category. In these months, the maximum values of the UV index do not exceed 2. For more detailed information, check out our hourly Haarlem UV Index data.

Average daily maximum UV levels by month for Haarlem. Generated using Copernicus Atmosphere Monitoring Service information. Data for period from January 2022 to January 2023.
 JanFebMarAprMayJunJulAugSepOctNovDec
UV Index (month maximum)124578875321