December weather forecastHernani, Spain
December
Weather in December
The first month of the winter, December, is also a fresh month in Hernani, Spain, with an average temperature ranging between min 7.6°C (45.7°F) and max 11.4°C (52.5°F).Temperature
The transition from November to December sees average high-temperatures adjusting to a cool 11.4°C (52.5°F), from a not significantly different 13.6°C (56.5°F). In Hernani, the month of December records an average minimum temperature of 7.6°C (45.7°F), a slight dip from the daily highs.Humidity
The average relative humidity in December is 77%.Rainfall
In Hernani, in December, during 15.9 rainfall days, 61mm (2.4") of precipitation is typically accumulated. In Hernani, during the entire year, the rain falls for 214.2 days and collects up to 837mm (32.95") of precipitation.Snowfall
Months with snowfall in Hernani are January through March and December. December is the first month it typically snows in Hernani, Spain. Throughout December, in the average 0.5 snowfall days, it receives 1mm (0.04") of snow. In Hernani, during the entire year, snow falls for 2.4 days and aggregates up to 12mm (0.47") of snow.Daylight
December has the shortest days of the year, with an average of 9h and 0min of daylight.On the first day of the month, sunrise is at 08:20 and sunset at 17:33. On the last day of December, sunrise is at 08:39 and sunset at 17:42 CET.
Sunshine
The average sunshine in December is 5.3h.UV index
January through April, November and December, with an average maximum UV index of 3, are months with the lowest UV index. A UV Index value of 3 to 5 symbolizes a medium vulnerability from unsafe exposure to UV radiation for the ordinary person.Note: In December, the maximum UV index of 3 transforms into these recommendations:
Be vigilant - Suggestions to stave off sun damage are provided. It's crucial to reduce time in the direct Sun around mid-day due to the intense solar radiation. During bright days, sunglasses that offer UVA and UVB defense are recommended. Take heed! Reflection from the snow can almost amplify the Sun's UV radiation by double.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Hernani, Spain
- Average high temperature in December: 11.4°C
The warmest month (with the highest average high temperature) is August (23.1°C).
The month with the lowest average high temperature is January (9.9°C).
- Average low temperature in December: 7.6°C
The month with the highest average low temperature is August (17°C).
The coldest month (with the lowest average low temperature) is February (6.1°C).
Average pressure in December
Hernani, Spain
- Average pressure in December: 1021.8mbar
The month with the highest atmospheric pressure is December (1021.8mbar).
The month with the lowest atmospheric pressure is April (1015.6mbar).
Average wind speed in December
Hernani, Spain
- Average wind speed in December: 16.1km/h
The windiest month (with the highest average wind speed) is November (16.8km/h).
The calmest month (with the lowest average wind speed) is August (9.9km/h).
Average humidity in December
Hernani, Spain
- Average humidity in December: 77%
The month with the highest relative humidity is June (82%).
The month with the lowest relative humidity is October (75%).
Average rainfall in December
Hernani, Spain
- Average rainfall in December: 61mm
The wettest month (with the highest rainfall) is November (121mm).
The driest month (with the least rainfall) is September (44mm).
Average rainfall days in December
Hernani, Spain
- Average rainfall days in December: 15.9 days
The month with the highest number of rainy days is May (20.7 days).
The month with the least rainy days is October (14.8 days).
Average snowfall in December
Hernani, Spain
- Average snowfall in December: 1mm
The month with the highest snowfall is February (7mm).
The months with the least snowfall are April, May, June, July, August, September, October and November (0mm).
Average snowfall days in December
Hernani, Spain
- Average snowfall days in December: 0.5 days
The month with the highest number of snowfall days is February (1.1 days).
The months with the least snowfall days are April, May, June, July, August, September, October and November (0 days).
Average daylight in December /
Average sunshine in December
Hernani, Spain
- Average daylight in December: 9h and 0min
The month with the longest days is June (Average daylight: 15h and 18min).
The month with the shortest days is December (Average daylight: 9h and 0min).
- Average sunshine in December: 5h and 18min
The month with the most sunshine is July (Average sunshine: 9h and 18min).
The month with the least sunshine is November (Average sunshine: 4h and 48min).
Average sunshine days in December
Hernani, Spain
- Average sunshine days in December: 12.6 days
The month with the most sunshine days is October (13.6 days).
The month with the least sunshine days is May (6.8 days).
Average UV index in December
Hernani, Spain
- Average UV index in December: 3
The months with the highest UV index are May, June, July, August and September (UV index 5).
The months with the lowest UV index are January, February, March, April, November and December (UV index 3).
Average cloud cover in December
Hernani, Spain
- Average cloud cover in December: 46
The month with the most cloud cover is January (Cloud cover 53).
The month with the least cloud cover is September (Cloud cover 34).
Average visibility in December
Hernani, Spain
- Average visibility in December: 10km
The months with the highest visibility are February, March, June, July, August, September, October and December (10km).
The months with the lowest visibility are January, April, May and November (9km).
