Contents
- Weather in January
- Frequently asked questions
- Average temperature in January
- Average pressure in January
- Average wind speed in January
- Average humidity in January
- Average rainfall in January
- Average rainfall days in January
- Average snowfall in January
- Average snowfall days in January
- Average daylight in January
- Average sunshine in January
- Average sunshine days in January
- Average UV index in January
- Average cloud cover in January
- Average visibility in January
January
Weather in January
Temperature
Heelsum's January weather, with an average high temperature of 4.6°C (40.3°F) and an average low temperature of 1°C (33.8°F), tends to be the coldest of the year.Humidity
The average relative humidity in January in Heelsum is 88%.Rainfall
In Heelsum, during January, the rain falls for 16.8 days and regularly aggregates up to 47mm (1.85") of precipitation. Throughout the year, in Heelsum, there are 193.3 rainfall days, and 523mm (20.59") of precipitation is accumulated.Snowfall
Months with snowfall in Heelsum, Netherlands, are January through April, November and December. In Heelsum, Netherlands, in January, during 4.3 snowfall days, 32mm (1.26") of snow is typically accumulated. In Heelsum, during the entire year, snow falls for 14.5 days and aggregates up to 110mm (4.33") of snow.Daylight
The average length of the day in January in Heelsum, Netherlands, is 8h and 23min.On the first day of the month, sunrise is at 08:44 and sunset at 16:35. On the last day of January, sunrise is at 08:18 and sunset at 17:21 CET.
Sunshine
The average sunshine in January in Heelsum is 3.8h.UV index
The months with the lowest UV index in Heelsum are January, February, November and December, with an average maximum UV index of 2. A UV Index of 2, and less, symbolizes a low health risk from unprotected exposure to Sun's UV rays for the ordinary person.Note: An average maximum UV index of 2 in January leads to these recommendations:
Unlike children, who always need sun protection, most individuals can remain in the sun for up to an hour without getting burnt. Midday is when the Sun's radiation is strongest; avoid prolonged exposure during this time. Sunglasses providing both UVA and UVB protection are non-negotiable on sunlit days. Be aware! The intensity of the Sun's UV radiation can be amplified nearly twice due to snow reflection.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are the coldest months in Heelsum?
Is it cold in Heelsum during January?
What is the average humidity in January in Heelsum?
How many days does it rain in January in Heelsum?
How many days does it snow in January in Heelsum?
How many hours of daylight does Heelsum have in January?
When are sunrise and sunset in January in Heelsum?
How many hours of sunshine does Heelsum have in January?
When is the lowest UV index in Heelsum?
What is the UV index intensity in January in Heelsum?
Average temperature in January
Heelsum, Netherlands
- Average high temperature in January: 4.6°C
The warmest months (with the highest average high temperature) are July and August (22.3°C).
The month with the lowest average high temperature is January (4.6°C).
- Average low temperature in January: 1°C
The month with the highest average low temperature is August (13.8°C).
The coldest months (with the lowest average low temperature) are January and February (1°C).
Average pressure in January
Heelsum, Netherlands
- Average pressure in January: 1015.1mbar
The month with the highest atmospheric pressure is September (1017.1mbar).
The month with the lowest atmospheric pressure is November (1011.8mbar).
Average wind speed in January
Heelsum, Netherlands
- Average wind speed in January: 17.2km/h
The windiest month (with the highest average wind speed) is December (17.7km/h).
The calmest month (with the lowest average wind speed) is August (11.7km/h).
Average humidity in January
Heelsum, Netherlands
- Average humidity in January: 88%
The month with the highest relative humidity is December (89%).
The month with the lowest relative humidity is April (75%).
Average rainfall in January
Heelsum, Netherlands
- Average rainfall in January: 47mm
The wettest month (with the highest rainfall) is June (53mm).
The driest month (with the least rainfall) is April (27mm).
Average rainfall days in January
Heelsum, Netherlands
- Average rainfall days in January: 16.8 days
The month with the highest number of rainy days is July (18.7 days).
The month with the least rainy days is September (13.5 days).
Average snowfall in January
Heelsum, Netherlands
- Average snowfall in January: 32mm
The month with the highest snowfall is February (39mm).
The months with the least snowfall are May, June, July, August, September and October (0mm).
Average snowfall days in January
Heelsum, Netherlands
- Average snowfall days in January: 4.3 days
The month with the highest number of snowfall days is February (4.7 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).
Average daylight in January /
Average sunshine in January
Heelsum, Netherlands
- Average daylight in January: 8h and 2min
The month with the longest days is June (Average daylight: 16h and 36min).
The month with the shortest days is December (Average daylight: 7h and 48min).
- Average sunshine in January: 3h and 5min
The month with the most sunshine is July (Average sunshine: 9h and 0min).
The month with the least sunshine is December (Average sunshine: 3h and 24min).
Average sunshine days in January
Heelsum, Netherlands
- Average sunshine days in January: 9.8 days
The month with the most sunshine days is September (14.5 days).
The month with the least sunshine days is December (7.9 days).
Average UV index in January
Heelsum, Netherlands
- Average UV index in January: 2
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 January
Heelsum, Netherlands
- Average cloud cover in January: 63
The month with the most cloud cover is December (Cloud cover 67).
The month with the least cloud cover is August (Cloud cover 43).
Average visibility in January
Heelsum, Netherlands
- Average visibility in January: 9km
The months with the highest visibility are January, February, March, April, May, June, July, August, October and November (9km).
The months with the lowest visibility are September and December (8km).
