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 sea temperature 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
The advent of December brings an average high-temperature of a still wintry 0.6°C (33.1°F), almost identical to the preceding month. December nights reveal a minor deviation from daytime highs, with a mean low-temperature of -1.9°C (28.6°F).Humidity
October through December, with an average relative humidity of 77%, are the least humid months.Rainfall
In Harstad, in December, during 9.5 rainfall days, 92mm (3.62") of precipitation is typically accumulated. Throughout the year, there are 154.2 rainfall days, and 862mm (33.94") of precipitation is accumulated.Snowfall
January through June, September through December are months with snowfall in Harstad. In Harstad, during December, snow falls for 13.1 days and regularly aggregates up to 301mm (11.85") of snow. In Harstad, during the entire year, snow falls for 94.6 days and aggregates up to 1922mm (75.67") of snow.Sea temperature
In December, the average sea temperature in Harstad is 6.4°C (43.5°F).Note: Swimming at temperatures less than 10°C (50°F) in 6.4°C (43.5°F) is feasible with the right swimsuit; if not, expect cold shock and breathlessness. A quick swim at 13°C (55.4°F) without adequate warmth can be discomforting.
Daylight
The average length of the day in December is 0h and 4min.Sunshine
The month with the least sunshine in Harstad is December, with an average of 0.3h of sunshine.UV index
In Harstad, the average daily maximum UV index in December is 2. A UV Index estimate of 2, and below, represents a low health risk from unsafe exposure to UV radiation for the ordinary person.Note: In December, the UV index of 2 transforms into the following advice:
Children, babies, and those with sensitive skin should always be shielded from long periods of sun exposure. Avoiding direct sunlight during midday hours helps reduce the risk from intense UV radiation. Safeguard your eyes, ears, and face from sun rays with the aid of a wide-brim hat. Foresee this! The reflection from snow can nearly double the intensity of UV radiation from the Sun.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How cold is it in Harstad in December?
What is the least humid month in Harstad?
What is the average humidity in December in Harstad?
How many days does it rain in December in Harstad?
How many days does it snow in December in Harstad?
What is the sea water temperature in December in Harstad?
How many hours of daylight does Harstad have in December?
What is the month with the least sunshine in Harstad?
How many hours of sunshine does Harstad have in December?
What is the UV index intensity in December in Harstad?
Average temperature in December
Harstad, Norway
- Average high temperature in December: 0.6°C
The warmest month (with the highest average high temperature) is July (14.1°C).
The month with the lowest average high temperature is February (-1.2°C).
- Average low temperature in December: -1.9°C
The months with the highest average low temperature are July and August (9.9°C).
The coldest month (with the lowest average low temperature) is February (-4.5°C).
Average pressure in December
Harstad, Norway
- Average pressure in December: 1000.9mbar
The month with the highest atmospheric pressure is May (1013.9mbar).
The month with the lowest atmospheric pressure is December (1000.9mbar).
Average wind speed in December
Harstad, Norway
- Average wind speed in December: 19km/h
The windiest month (with the highest average wind speed) is March (19.3km/h).
The calmest month (with the lowest average wind speed) is July (11.1km/h).
Average humidity in December
Harstad, Norway
- Average humidity in December: 77%
The month with the highest relative humidity is April (83%).
The months with the lowest relative humidity are October, November and December (77%).
Average rainfall in December
Harstad, Norway
- Average rainfall in December: 92mm
The wettest month (with the highest rainfall) is March (95mm).
The driest months (with the least rainfall) are May and July (53mm).
Average rainfall days in December
Harstad, Norway
- Average rainfall days in December: 9.5 days
The month with the highest number of rainy days is September (17.5 days).
The month with the least rainy days is February (6.3 days).
Average snowfall in December
Harstad, Norway
- Average snowfall in December: 301mm
The month with the highest snowfall is March (417mm).
The months with the least snowfall are July and August (0mm).
Average snowfall days in December
Harstad, Norway
- Average snowfall days in December: 13.1 days
The month with the highest number of snowfall days is March (19.2 days).
The months with the least snowfall days are July and August (0 days).
Average sea temperature in December
Harstad, Norway
- Average sea temperature in December: 6.4°C
The best month for swimming (with the highest average sea temperature) is August (12.3°C).
The coldest month (with the lowest average sea temperature) is March (3.8°C).
Average daylight in December /
Average sunshine in December
Harstad, Norway
- Average daylight in December: 0h and 1min
The month with the longest days is August (Average daylight: 17h and 42min).
The month with the shortest days is June (Average daylight: 0h and 0min).
- Average sunshine in December: 0h and 2min
The month with the most sunshine is August (Average sunshine: 9h and 0min).
The month with the least sunshine is December (Average sunshine: 0h and 18min).
Average sunshine days in December
Harstad, Norway
- Average sunshine days in December: 12.5 days
The month with the most sunshine days is January (13.6 days).
The month with the least sunshine days is March (8.3 days).
Average UV index in December
Harstad, Norway
- 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 February, March and November (UV index 1).
Average cloud cover in December
Harstad, Norway
- Average cloud cover in December: 60
The month with the most cloud cover is March (Cloud cover 67).
The month with the least cloud cover is August (Cloud cover 52).
Average visibility in December
Harstad, Norway
- Average visibility in December: 9km
The months with the highest visibility are January, February, May, June, July, August, September, October, November and December (9km).
The months with the lowest visibility are March and April (8km).
