December weather forecastGrenivík, Iceland
December
Weather in December
The first month of the winter, December, is also a subzero cold month in Grenivík, Iceland, with an average temperature ranging between min -9.1°C (15.6°F) and max -3.8°C (25.2°F).Temperature
In Grenivík, the month of December is known for its lowest average temperatures, reaching a high of -3.8°C (25.2°F) and a low of -9.1°C (15.6°F).Humidity
January through March and December, with an average relative humidity of 91%, are the most humid months in Grenivík.Rainfall
December is the month with the most rainfall in Grenivík. Rain falls for 9.7 days and accumulates 115mm (4.53") of precipitation.Snowfall
January through June, September through December are months with snowfall in Grenivík. The month with the most snowfall is December, when snow falls for 18.7 days and typically aggregates up to 511mm (20.12") of snow.Daylight
The month with the shortest days is December, with an average of 3h and 12min of daylight.On the first day of December, sunrise is at 11:00 and sunset at 15:03. On the last day of the month, sunrise is at 11:39 and sunset at 14:52 GMT.
Sunshine
In December, the average sunshine is 1.2h.UV index
The months with the lowest UV index are January through March, October through December, with an average maximum UV index of 1. A UV Index estimate of 2, and below, represents a minimal health vulnerability from exposure to the Sun's UV radiation for average individuals.Note: A typical high UV index of 1 in December suggests the following recommendations:
In contrast to children, who must always be shielded from the sun, most people can tolerate up to an hour of sun exposure without any burns. Sun exposure should be minimized, especially during midday, to avoid harmful UV radiation. To best shield against UV radiation, choose sun-safe garments and dependable sunglasses. Be informed! The Sun's UV radiation can be nearly doubled due to the reflection from snow.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Grenivík, Iceland
- Average high temperature in December: -3.8°C
The warmest month (with the highest average high temperature) is July (11.1°C).
The month with the lowest average high temperature is December (-3.8°C).
- Average low temperature in December: -9.1°C
The month with the highest average low temperature is July (5.6°C).
The coldest month (with the lowest average low temperature) is December (-9.1°C).
Average pressure in December
Grenivík, Iceland
- Average pressure in December: 999.9mbar
The month with the highest atmospheric pressure is June (1014.3mbar).
The month with the lowest atmospheric pressure is January (998.5mbar).
Average wind speed in December
Grenivík, Iceland
- Average wind speed in December: 16.3km/h
The windiest month (with the highest average wind speed) is December (16.3km/h).
The calmest month (with the lowest average wind speed) is July (9.9km/h).
Average humidity in December
Grenivík, Iceland
- Average humidity in December: 91%
The months with the highest relative humidity are January, February, March and December (91%).
The month with the lowest relative humidity is June (77%).
Average rainfall in December
Grenivík, Iceland
- Average rainfall in December: 115mm
The wettest month (with the highest rainfall) is December (115mm).
The driest month (with the least rainfall) is June (40mm).
Average rainfall days in December
Grenivík, Iceland
- Average rainfall days in December: 9.7 days
The months with the highest number of rainy days are July and August (22.3 days).
The month with the least rainy days is February (7.9 days).
Average snowfall in December
Grenivík, Iceland
- Average snowfall in December: 511mm
The month with the highest snowfall is December (511mm).
The months with the least snowfall are July and August (0mm).
Average snowfall days in December
Grenivík, Iceland
- Average snowfall days in December: 18.7 days
The month with the highest number of snowfall days is March (20.9 days).
The months with the least snowfall days are July and August (0 days).
Average daylight in December /
Average sunshine in December
Grenivík, Iceland
- Average daylight in December: 3h and 12min
The month with the longest days is July (Average daylight: 20h and 48min).
The month with the shortest days is December (Average daylight: 3h and 12min).
- Average sunshine in December: 1h and 12min
The month with the most sunshine is May (Average sunshine: 6h and 42min).
The month with the least sunshine is June (Average sunshine: 1h and 6min).
Average sunshine days in December
Grenivík, Iceland
- Average sunshine days in December: 6 days
The month with the most sunshine days is May (8.9 days).
The month with the least sunshine days is September (5.3 days).
Average UV index in December
Grenivík, Iceland
- Average UV index in December: 1
The months with the highest UV index are April, May, June, July, August and September (UV index 2).
The months with the lowest UV index are January, February, March, October, November and December (UV index 1).
Average cloud cover in December
Grenivík, Iceland
- Average cloud cover in December: 70
The month with the most cloud cover is March (Cloud cover 72).
The month with the least cloud cover is June (Cloud cover 62).
Average visibility in December
Grenivík, Iceland
- Average visibility in December: 7km
The month with the highest visibility is June (9km).
The months with the lowest visibility are January, February, March, April, November and December (7km).
