December weather forecastWillemstad, Netherlands
December
Weather in December
The first month of the winter, December, is still a chilly month in Willemstad, Netherlands, with an average temperature varying between 3.1°C (37.6°F) and 6.5°C (43.7°F).Temperature
Willemstad in December undergoes a slight reduction in the average high-temperature, shifting from November's frosty 9.8°C (49.6°F) to a still chilly 6.5°C (43.7°F). Willemstad maintains a consistent average nighttime low-temperature of 3.1°C (37.6°F) throughout December.Humidity
With an average relative humidity of 87%, December is the most humid month.Rainfall
In Willemstad, in December, during 9.9 rainfall days, 14mm (0.55") of precipitation is typically accumulated. Throughout the year, in Willemstad, there are 104.9 rainfall days, and 132mm (5.2") of precipitation is accumulated.Snowfall
Months with snowfall are January through March and December. December is the first month it typically snows. Throughout December, in the average 1.5 snowfall days, it receives 4mm (0.16") of snow. Throughout the year, there are 7 snowfall days, and 21mm (0.83") of snow is accumulated.Sea temperature
In Willemstad, the average seawater temperature in December is 9.5°C (49.1°F).Note: Engaging in a swim in 9.5°C (49.1°F) can threaten life. Brief exposure to 13°C (55.4°F) waters is uneasy, and submersion below 10°C (50°F) can lead to cold shock and disrupted breathing patterns, varying by individual.
Daylight
With an average of 7h and 54min of daylight, December has the shortest days of the year.On the first day of December in Willemstad, sunrise is at 08:27 and sunset at 16:35. On the last day of the month, sunrise is at 08:48 and sunset at 16:42 CET.
Sunshine
With an average of 3.4h of sunshine, December has the least sunshine of the year.UV index
The months with the lowest UV index in Willemstad are January, February, November and December, with an average maximum UV index of 2. A UV Index estimate of 2, and below, represents a low health risk from unprotected exposure to Sun's UV rays for the average person.Note: The UV index of 2 during December leads to these advisories:
Babies, children, and individuals with sensitive skin should always have protection against extended sun exposure. Being exposed to the midday Sun can have harmful effects due to strong UV radiation; always take precautions. In bright sunlight, prioritize sunglasses that grant protection from UVA and UVB radiation. Mark this! Snow reflection can nearly double the UV radiation intensity from the Sun.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Willemstad, Netherlands
- Average high temperature in December: 6.5°C
The warmest month (with the highest average high temperature) is August (22.7°C).
The month with the lowest average high temperature is January (5.3°C).
- Average low temperature in December: 3.1°C
The month with the highest average low temperature is August (14.1°C).
The coldest month (with the lowest average low temperature) is February (1.4°C).
Average pressure in December
Willemstad, Netherlands
- Average pressure in December: 1015.4mbar
The month with the highest atmospheric pressure is September (1017.2mbar).
The month with the lowest atmospheric pressure is November (1011.9mbar).
Average wind speed in December
Willemstad, Netherlands
- Average wind speed in December: 17.5km/h
The windiest months (with the highest average wind speed) are February and December (17.5km/h).
The calmest month (with the lowest average wind speed) is August (12.1km/h).
Average humidity in December
Willemstad, Netherlands
- Average humidity in December: 87%
The month with the highest relative humidity is December (87%).
The month with the lowest relative humidity is April (74%).
Average rainfall in December
Willemstad, Netherlands
- Average rainfall in December: 14mm
The wettest month (with the highest rainfall) is June (15mm).
The driest month (with the least rainfall) is April (5mm).
Average rainfall days in December
Willemstad, Netherlands
- Average rainfall days in December: 9.9 days
The month with the highest number of rainy days is August (10.3 days).
The month with the least rainy days is April (6.3 days).
Average snowfall in December
Willemstad, Netherlands
- Average snowfall in December: 4mm
The month with the highest snowfall is February (10mm).
The months with the least snowfall are April, May, June, July, August, September, October and November (0mm).
Average snowfall days in December
Willemstad, Netherlands
- Average snowfall days in December: 1.5 days
The month with the highest number of snowfall days is February (2.3 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).
Average sea temperature in December
Willemstad, Netherlands
- Average sea temperature in December: 9.5°C
The best month for swimming (with the highest average sea temperature) is August (18.3°C).
The coldest months (with the lowest average sea temperature) are February and March (6.6°C).
Average daylight in December /
Average sunshine in December
Willemstad, Netherlands
- Average daylight in December: 7h and 54min
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 54min).
- Average sunshine in December: 3h and 24min
The month with the most sunshine is June (Average sunshine: 9h and 12min).
The month with the least sunshine is December (Average sunshine: 3h and 24min).
Average sunshine days in December
Willemstad, Netherlands
- Average sunshine days in December: 16.4 days
The month with the most sunshine days is April (21.3 days).
The month with the least sunshine days is November (15.5 days).
Average UV index in December
Willemstad, Netherlands
- Average UV index in December: 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 December
Willemstad, Netherlands
- Average cloud cover in December: 66
The month with the most cloud cover is December (Cloud cover 66).
The month with the least cloud cover is April (Cloud cover 42).
Average visibility in December
Willemstad, Netherlands
- Average visibility in December: 9km
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (9km).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (9km).
