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
December, with an average high of -2.6°C (27.3°F) and a low of -7.6°C (18.3°F), signifies the coldest month of the year.Humidity
In Geysir, the average relative humidity in December is 88%.Rainfall
In Geysir, in December, it is raining for 12.5 days, with typically 116mm (4.57") of accumulated precipitation. In Geysir, during the entire year, the rain falls for 201.7 days and collects up to 1100mm (43.31") of precipitation.Snowfall
Months with snowfall are January through May, September through December. In Geysir, during December, snow falls for 15.5 days and regularly aggregates up to 259mm (10.2") of snow. Throughout the year, there are 98.9 snowfall days, and 1660mm (65.35") of snow is accumulated.Daylight
With an average of 4h and 18min of daylight, December has the shortest days of the year.On the first day of December, sunrise is at 10:42 and sunset at 15:38. On the last day of the month, sunrise is at 11:15 and sunset at 15:33 GMT.
Sunshine
In Geysir, the average sunshine in December is 2.7h.UV index
In Geysir, the average daily maximum UV index in December is 2. A UV Index estimate of 2, and below, represents a minimal health vulnerability from exposure to the Sun's UV rays for the ordinary person.Note: In December, the UV index of 2 transforms into the following advice:
Children must always have sun protection, unlike most people, who can tolerate up to an hour in the sun without any burns. Avoiding the Sun's peak radiation during midday hours is essential for health and safety. A wide-brimmed hat provides unparalleled sun protection for sensitive areas like the eyes, ears, and neck. Remember to consider! The UV radiation from the Sun can be intensified nearly twice by the reflection of snow.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What time of the year is the coldest?
How cold is December?
What is the average humidity in December?
How many days does it rain in December?
How many days does it snow in December in Geysir?
What is the month with the shortest days?
What is the average length of the day in December?
What time are sunrise and sunset in December?
How many hours of sunshine does Geysir have in December?
What is the UV index reading in December?
Average temperature in December
Geysir, Iceland
- Average high temperature in December: -2.6°C
The warmest month (with the highest average high temperature) is July (11.3°C).
The month with the lowest average high temperature is December (-2.6°C).
- Average low temperature in December: -7.6°C
The month with the highest average low temperature is July (5.9°C).
The coldest month (with the lowest average low temperature) is December (-7.6°C).
Average pressure in December
Geysir, Iceland
- Average pressure in December: 998.9mbar
The month with the highest atmospheric pressure is June (1013.9mbar).
The month with the lowest atmospheric pressure is January (997.4mbar).
Average wind speed in December
Geysir, Iceland
- Average wind speed in December: 18.7km/h
The windiest month (with the highest average wind speed) is February (19.9km/h).
The calmest month (with the lowest average wind speed) is June (11.8km/h).
Average humidity in December
Geysir, Iceland
- Average humidity in December: 88%
The month with the highest relative humidity is January (89%).
The month with the lowest relative humidity is June (78%).
Average rainfall in December
Geysir, Iceland
- Average rainfall in December: 116mm
The wettest month (with the highest rainfall) is January (141mm).
The driest month (with the least rainfall) is June (41mm).
Average rainfall days in December
Geysir, Iceland
- Average rainfall days in December: 12.5 days
The month with the highest number of rainy days is September (21.9 days).
The month with the least rainy days is February (12.2 days).
Average snowfall in December
Geysir, Iceland
- Average snowfall in December: 259mm
The month with the highest snowfall is January (393mm).
The months with the least snowfall are June, July and August (0mm).
Average snowfall days in December
Geysir, Iceland
- Average snowfall days in December: 15.5 days
The month with the highest number of snowfall days is March (17.2 days).
The months with the least snowfall days are July and August (0 days).
Average daylight in December /
Average sunshine in December
Geysir, Iceland
- Average daylight in December: 4h and 2min
The month with the longest days is June (Average daylight: 21h and 0min).
The month with the shortest days is December (Average daylight: 4h and 18min).
- Average sunshine in December: 2h and 4min
The month with the most sunshine is August (Average sunshine: 8h and 12min).
The month with the least sunshine is January (Average sunshine: 2h and 24min).
Average sunshine days in December
Geysir, Iceland
- Average sunshine days in December: 8.6 days
The month with the most sunshine days is June (10.5 days).
The month with the least sunshine days is September (5.3 days).
Average UV index in December
Geysir, Iceland
- Average UV index in December: 2
The months with the highest UV index are June and July (UV index 3).
The months with the lowest UV index are October and November (UV index 1).
Average cloud cover in December
Geysir, Iceland
- Average cloud cover in December: 59
The month with the most cloud cover is September (Cloud cover 66).
The month with the least cloud cover is August (Cloud cover 57).
Average visibility in December
Geysir, Iceland
- Average visibility in December: 8km
The months with the highest visibility are May, June, July and August (9km).
The month with the lowest visibility is January (7km).
