Climate and monthly weather forecastHeiloo, Netherlands
Climate and monthly weather forecast
Weather in January
January, like December, in Heiloo, Netherlands, is an icy winter month, with an average temperature varying between 5.8°C (42.4°F) and 3.6°C (38.5°F). January and February represent the coldest period, with an average high-temperature of 5.8°C (42.4°F). Weather in January »Weather in February
The last month of the winter, February, is also an icy month in Heiloo, Netherlands, with an average temperature varying between 3.3°C (37.9°F) and 5.8°C (42.4°F). Heiloo sees its lowest temperatures during January and February, with an average high-temperature of 5.8°C (42.4°F). Weather in February »Weather in March
March, the first month of the spring in Heiloo, is a frosty month, with an average temperature fluctuating between 4.8°C (40.6°F) and 8.2°C (46.8°F). March's climate shows a minor adjustment in average high-temperatures to a frosty 8.2°C (46.8°F) from February's 5.8°C (42.4°F). Weather in March »Weather in April
April in Heiloo, Netherlands, is a cool spring month, with temperature in the range of an average high of 11.3°C (52.3°F) and an average low of 7.3°C (45.1°F). The shift from March to April introduces a subtle increase in the average high-temperature, moving from a frosty 8.2°C (46.8°F) to a fresh 11.3°C (52.3°F). Weather in April »Weather in May
May, the last month of the spring in Heiloo, is a moderate month, with an average temperature fluctuating between 13.9°C (57°F) and 10°C (50°F). Heiloo notes an average high-temperature of a refreshing 13.9°C (57°F) in May, displaying minor variation from April. Weather in May »Weather in June
The first month of the summer, June, is a refreshing month in Heiloo, Netherlands, with temperature in the range of an average low of 13°C (55.4°F) and an average high of 17°C (62.6°F). The shift into June is accompanied by a modest temperature increase, with the average high-temperature edging up from a moderate 13.9°C (57°F) in May to a comfortable 17°C (62.6°F). Weather in June »Weather in July
July, the same as June, is another refreshing summer month in Heiloo, Netherlands, with an average temperature varying between 15.6°C (60.1°F) and 19°C (66.2°F). The advent of July observes an average high-temperature of a still comfortable 19°C (66.2°F), nearly identical to June's 17°C (62.6°F). Weather in July »Weather in August
August, the last month of the summer in Heiloo, is another comfortable month, with an average temperature varying between 16.6°C (61.9°F) and 19.9°C (67.8°F). In Heiloo, Netherlands, August is the warmest month, with temperatures averaging a high of 19.9°C (67.8°F) and a low of 16.6°C (61.9°F). Weather in August »Weather in September
September, the first month of the autumn in Heiloo, is still a comfortable month, with temperature in the range of an average high of 17.7°C (63.9°F) and an average low of 14.5°C (58.1°F). Welcoming September, Heiloo notes an average high-temperature of a still enjoyable 17.7°C (63.9°F), nearly consistent with August's 19.9°C (67.8°F). Weather in September »Weather in October
October, like September, is another refreshing autumn month in Heiloo, Netherlands, with temperature in the range of an average high of 14.6°C (58.3°F) and an average low of 11.5°C (52.7°F). October brings a slight decrease in temperature, down from a refreshing 17.7°C (63.9°F) in September to a mild 14.6°C (58.3°F). Weather in October »Weather in November
November, the last month of the autumn in Heiloo, is also a fresh month, with an average temperature varying between 10.3°C (50.5°F) and 8°C (46.4°F). Start of November brings a slight shift in the average high-temperature, dipping a bit from October's refreshing 14.6°C (58.3°F) to a cool 10.3°C (50.5°F). Weather in November »Weather in December
December, the first month of the winter in Heiloo, is still a chilly month, with temperature in the range of an average high of 7.7°C (45.9°F) and an average low of 5.6°C (42.1°F). The introduction of December sees an average high-temperature of a chilly 7.7°C (45.9°F), hardly deviating from November. 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
The months of January and February are noted for their lowest temperatures, with an average high-temperature of 5.8°C (42.4°F).
January and December, with an average relative humidity of 83%, are most humid months in Heiloo, Netherlands.
Throughout the year, there are 169.2 rainfall days, and 339mm (13.35") of precipitation is accumulated.
January through March and December are months with snowfall in Heiloo, Netherlands.
In Heiloo, Netherlands, during the entire year, snow falls for 7.7 days and aggregates up to 23mm (0.91") of snow.
The months with the lowest UV index in Heiloo, Netherlands, are January, February, November and December, with an average maximum UV index of 2.
February is the month with the most snowfall in Heiloo, Netherlands. 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.
In Heiloo, snow does not fall in April through November.
With an average of 16h and 48min of daylight, June has the longest days of the year in Heiloo.
The month with the most sunshine is June, with an average of 10.2h of sunshine.
The months with the highest UV index in Heiloo, Netherlands, are June through August, with an average maximum UV index of 5.
August is the warmest month, with the temperature often reaching an average high of 19.9°C (67.8°F) and an average low of 16.6°C (61.9°F).
August is the least humid month in Heiloo, Netherlands, with an average relative humidity of 76%.
The month with the most rainfall in Heiloo, Netherlands, is August, when the rain falls for 17.2 days and typically aggregates up to 48mm (1.89") of precipitation.
On Sunday, 27. October 2024, at 03:00, Daylight Saving Time ends, 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.
December has the shortest days of the year, with an average of 7h and 42min of daylight.
The month with the least sunshine is December, with an average of 3.4h of sunshine.
Average temperature
Heiloo, 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
Heiloo, 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
Heiloo, 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
Heiloo, 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
Heiloo, Netherlands
The wettest month (with the highest rainfall) is August (48mm).
The driest month (with the least rainfall) is April (11mm).
Average rainfall days
Heiloo, 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
Heiloo, 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
Heiloo, 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
Heiloo, 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 48min
- Average daylight in July:
16h and 18min - Average daylight in August:
14h and 42min - 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 42min
The month with the longest days is June (Average daylight: 16h and 48min).
The month with the shortest days is December (Average daylight: 7h and 42min).
- 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
Heiloo, 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
Heiloo, 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
Heiloo, 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
Heiloo, 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).
