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
Weather in December
Temperature
With December's arrival, Heltiu's weather changes as the average high-temperature falls from a chilly 9.3°C (48.7°F) in November to a cold 2.8°C (37°F). During December, Heltiu records a consistent average nighttime temperature of -3.1°C (26.4°F).Humidity
The average relative humidity in December is 81%.Rainfall
In Heltiu, during December, the rain falls for 6.3 days and regularly aggregates up to 24mm (0.94") of precipitation. Throughout the year, there are 131.6 rainfall days, and 424mm (16.69") of precipitation is accumulated.Snowfall
Months with snowfall in Heltiu are January through April, October through December. In Heltiu, in December, snow falls for 7.6 days, with typically accumulated 121mm (4.76") of snow. In Heltiu, Romania, during the entire year, snow falls for 36.9 days and aggregates up to 532mm (20.94") of snow.Daylight
With an average of 8h and 42min of daylight, December has the shortest days of the year.On the first day of December, sunrise is at 07:34 and sunset at 16:28. On the last day of the month, sunrise is at 07:54 and sunset at 16:36 EET.
Sunshine
In December, the average sunshine is 5.4h.UV index
January, February, October through December, with an average maximum UV index of 2, are months with the lowest UV index in Heltiu. A UV Index reading of 2, and below, represents a minimal health hazard from unprotected exposure to Sun's UV rays for the ordinary person.Note: The daily maximum UV index of 2 in December interprets into the following advice:
Those with sensitive skin, infants, and children require constant safeguarding from prolonged sun exposure. Considering the harmful UV rays from the Sun during midday, it's essential to reduce exposure. Loose clothes with a tight weave are optimal for safeguarding yourself against the Sun's rays. Mind you! Snow reflection can increase the intensity of the Sun's UV radiation nearly twofold.
Frequently asked questions
How cold is it in Heltiu in December?
What is the average humidity in December in Heltiu?
How many days does it rain in December in Heltiu?
How many days does it snow in December in Heltiu?
What is the month with the shortest days in Heltiu?
How many hours of daylight does Heltiu have in December?
What time are sunrise and sunset in December in Heltiu?
How long on average sun shines in December in Heltiu?
What is the month with the lowest UV index in Heltiu?
How high is the UV index in December in Heltiu?
Average temperature in December
Heltiu, Romania
- Average high temperature in December: 2.8°C
The warmest month (with the highest average high temperature) is August (27°C).
The month with the lowest average high temperature is January (0.2°C).
- Average low temperature in December: -3.1°C
The month with the highest average low temperature is August (14.2°C).
The coldest month (with the lowest average low temperature) is January (-5.6°C).
Average pressure in December
Heltiu, Romania
- Average pressure in December: 1020.1mbar
The month with the highest atmospheric pressure is December (1020.1mbar).
The month with the lowest atmospheric pressure is June (1013.5mbar).
Average wind speed in December
Heltiu, Romania
- Average wind speed in December: 9.5km/h
The windiest month (with the highest average wind speed) is April (10.9km/h).
The calmest month (with the lowest average wind speed) is August (8.7km/h).
Average humidity in December
Heltiu, Romania
- Average humidity in December: 81%
The month with the highest relative humidity is January (86%).
The month with the lowest relative humidity is August (59%).
Average rainfall in December
Heltiu, Romania
- Average rainfall in December: 24mm
The wettest month (with the highest rainfall) is June (87mm).
The driest months (with the least rainfall) are September and November (20mm).
Average rainfall days in December
Heltiu, Romania
- Average rainfall days in December: 6.3 days
The month with the highest number of rainy days is May (18.7 days).
The month with the least rainy days is January (6.1 days).
Average snowfall in December
Heltiu, Romania
- Average snowfall in December: 121mm
The month with the highest snowfall is January (131mm).
The months with the least snowfall are May, June, July, August and September (0mm).
Average snowfall days in December
Heltiu, Romania
- Average snowfall days in December: 7.6 days
The month with the highest number of snowfall days is January (10 days).
The months with the least snowfall days are May, June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Heltiu, Romania
- Average daylight in December: 8h and 4min
The month with the longest days is June (Average daylight: 15h and 42min).
The month with the shortest days is December (Average daylight: 8h and 42min).
- Average sunshine in December: 5h and 2min
The month with the most sunshine is August (Average sunshine: 11h and 24min).
The month with the least sunshine is February (Average sunshine: 4h and 30min).
Average sunshine days in December
Heltiu, Romania
- Average sunshine days in December: 18.3 days
The month with the most sunshine days is August (21.1 days).
The month with the least sunshine days is June (10.3 days).
Average UV index in December
Heltiu, Romania
- Average UV index in December: 2
The months with the highest UV index are July and August (UV index 6).
The months with the lowest UV index are January, February, October, November and December (UV index 2).
Average cloud cover in December
Heltiu, Romania
- Average cloud cover in December: 43
The month with the most cloud cover is February (Cloud cover 53).
The month with the least cloud cover is August (Cloud cover 21).
Average visibility in December
Heltiu, Romania
- Average visibility in December: 8km
The months with the highest visibility are June, July, August and September (10km).
The months with the lowest visibility are January, February and December (8km).
Heltiu, Romania
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