Contents
- Weather in December
- Frequently asked questions
- Average temperature in December
- Average pressure in December
- Average wind speed in December
- Average humidity in December
- Average rainfall in December
- Average rainfall days in December
- Average snowfall in December
- Average snowfall days in December
- Average daylight in December
- Average sunshine in December
- Average sunshine days in December
- Average UV index in December
- Average cloud cover in December
- Average visibility in December
December
Weather in December
Temperature
With an average high-temperature of 4.5°C (40.1°F) and an average low-temperature of 1.9°C (35.4°F), December is the coldest month.Humidity
December is the least humid month, with an average relative humidity of 73%.Rainfall
In Keldur, during December, the rain falls for 15.6 days and regularly aggregates up to 114mm (4.49") of precipitation. Throughout the year, in Keldur, there are 215.2 rainfall days, and 1116mm (43.94") of precipitation is accumulated.Snowfall
Months with snowfall are January through May, October through December. In Keldur, Iceland, during December, snow falls for 6 days and regularly aggregates up to 68mm (2.68") of snow. In Keldur, during the entire year, snow falls for 32.4 days and aggregates up to 397mm (15.63") of snow.Daylight
With an average of 4h and 36min of daylight, December has the shortest days of the year in Keldur.On the first day of the month, sunrise is at 10:35 and sunset at 15:43. On the last day of December, in Keldur, sunrise is at 11:07 and sunset at 15:40 GMT.
Sunshine
The average sunshine in December in Keldur, Iceland, is 3h.UV index
January through April, October through December, with an average maximum UV index of 2, are months with the lowest UV index in Keldur. A UV Index reading of 2, and below, represents a minimal health vulnerability from unprotected exposure to Sun's UV rays for ordinary individuals.Note: An average maximum UV index of 2 in December leads to these recommendations:
Despite most people tolerating extended sun exposure, it is critical to always protect those with sensitive skin, infants, and children. Avoiding direct sun during mid-day hours can prevent harmful UV radiation exposure. Sunglasses that guard against UVA and UVB rays are pivotal in minimizing sun-induced ocular damage. Be advised! The UV radiation from the Sun can be almost doubled due to the reflective properties of snow.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What time of the year is the coldest in Keldur?
How cold does it get in Keldur in December?
What is the least humid month in Keldur?
What is the average humidity in December in Keldur?
How much does it rain in Keldur in December?
How many days does it snow in December in Keldur?
What is the month with the shortest days in Keldur?
What is the average length of the day in December in Keldur?
What time are sunrise and sunset in December in Keldur?
How long on average sun shines in December in Keldur?
What are the months with the lowest UV index in Keldur?
What is the UV index intensity in December in Keldur?
Average temperature in December
Keldur, Iceland
- Average high temperature in December: 4.5°C
The warmest months (with the highest average high temperature) are July and August (12.3°C).
The month with the lowest average high temperature is December (4.5°C).
- Average low temperature in December: 1.9°C
The months with the highest average low temperature are July and August (9.7°C).
The coldest months (with the lowest average low temperature) are March and December (1.9°C).
Average pressure in December
Keldur, Iceland
- Average pressure in December: 998.2mbar
The month with the highest atmospheric pressure is June (1013.8mbar).
The month with the lowest atmospheric pressure is January (996.8mbar).
Average wind speed in December
Keldur, Iceland
- Average wind speed in December: 33.2km/h
The windiest month (with the highest average wind speed) is February (34.7km/h).
The calmest month (with the lowest average wind speed) is July (19.5km/h).
Average humidity in December
Keldur, Iceland
- Average humidity in December: 73%
The month with the highest relative humidity is July (82%).
The month with the lowest relative humidity is December (73%).
Average rainfall in December
Keldur, Iceland
- Average rainfall in December: 114mm
The wettest month (with the highest rainfall) is January (130mm).
The driest month (with the least rainfall) is June (48mm).
Average rainfall days in December
Keldur, Iceland
- Average rainfall days in December: 15.6 days
The month with the highest number of rainy days is September (21.5 days).
The month with the least rainy days is June (15 days).
Average snowfall in December
Keldur, Iceland
- Average snowfall in December: 68mm
The month with the highest snowfall is March (115mm).
The months with the least snowfall are June, July, August and September (0mm).
Average snowfall days in December
Keldur, Iceland
- Average snowfall days in December: 6 days
The month with the highest number of snowfall days is March (7.6 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Keldur, Iceland
- Average daylight in December: 4h and 4min
The month with the longest days is June (Average daylight: 20h and 36min).
The month with the shortest days is December (Average daylight: 4h and 36min).
- Average sunshine in December: 3h and 0min
The months with the most sunshine are May, June and July (Average sunshine: 8h and 36min).
The month with the least sunshine is January (Average sunshine: 2h and 36min).
Average sunshine days in December
Keldur, Iceland
- Average sunshine days in December: 9.2 days
The month with the most sunshine days is June (12.8 days).
The month with the least sunshine days is March (5.8 days).
Average UV index in December
Keldur, Iceland
- Average UV index in December: 2
The month with the highest UV index is July (UV index 4).
The months with the lowest UV index are January, February, March, April, October, November and December (UV index 2).
Average cloud cover in December
Keldur, Iceland
- Average cloud cover in December: 57
The month with the most cloud cover is March (Cloud cover 65).
The months with the least cloud cover are May and August (Cloud cover 55).
Average visibility in December
Keldur, Iceland
- Average visibility in December: 9km
The months with the highest visibility are May and June (10km).
The months with the lowest visibility are January, February, March, April, July, August, September, October, November and December (9km).
