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Monthly climate in Heiloo, North Holland, Netherlands

Last updated: May 6, 2024

Under the Köppen–Geiger climate classification Heiloo 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.Heiloo 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 Heiloo, North Holland, Netherlands §

The warmest months in Heiloo 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, Heiloo 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 Heiloo, North Holland, Netherlands.Generated using Copernicus Climate Change Service information.Data for period from January 2017 to June 2022.
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Maximum 12°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 maximum 11°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 high 7°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 mean 5°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 low 4°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 Heiloo with other places

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

Monthly average precipitation in Heiloo, North Holland, Netherlands §

Heiloo 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 Heiloo 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 Heiloo, North Holland, Netherlands.Generated using Copernicus Climate Change Service information.Data for period from January 2017 to January 2022.
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
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) 13 12 14 10 11 11 14 15 12 17 15 18

Monthly sunshine hours in Heiloo, North Holland, Netherlands §

The sunniest months in Heiloo are May, June and July, when the sun shines an average of 13 hours 32 minutes a day.Least sunny months in Heiloo: 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 Heiloo, North Holland, Netherlands.Generated using Copernicus Atmosphere Monitoring Service information.Data for period from January 2017 to January 2022.
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Mean monthly sunshine hours 113 198 283 361 412 411 422 396 326 238 192 133
Mean daily daylight hours 8h 15m 9h 54m 11h 54m 13h 58m 15h 46m 16h 43m 16h 12m 14h 35m 12h 36m 10h 33m 8h 43m 7h 44m

Solar UV radiation in Heiloo, North Holland, Netherlands §

Heiloo 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 Heiloo UV Index data.

Average daily maximum UV levels by month for Heiloo, North Holland, Netherlands.Generated using Copernicus Atmosphere Monitoring Service information.Data for period from January 2022 to January 2023.
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
UV Index (month maximum) 1 2 4 5 7 8 8 7 5 3 2 1