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
Weather in December
Temperature
December's onset in Riga brings a negligible change in high-temperatures, falling from an icy 5.5°C (41.9°F) in November to a still cold 1.4°C (34.5°F). An average low-temperature of -1.3°C (29.7°F), slightly less than the daytime peak, marks the month of December in Riga.Humidity
In Riga, the average relative humidity in December is 88%.Rainfall
In Riga, Latvia, in December, it is raining for 9.9 days, with typically 23mm (0.91") of accumulated precipitation. Throughout the year, in Riga, Latvia, there are 142 rainfall days, and 382mm (15.04") of precipitation is accumulated.Snowfall
January through April, October through December are months with snowfall. In December, in Riga, Latvia, it is snowing for 11.6 days. Throughout December, 70mm (2.76") of snow is accumulated. Throughout the year, in Riga, there are 52.2 snowfall days, and 327mm (12.87") of snow is accumulated.Sea temperature
In Riga, Latvia, the average seawater temperature in December is 4°C (39.2°F).Note: In swimming scenarios, this situation is extremely cold, fraught with danger, and poses a significant life risk. Absent insulated waterproof clothing, hypothermia strikes quickly.
Daylight
With an average of 6h and 54min of daylight, December has the shortest days of the year in Riga.On the first day of the month, sunrise is at 08:36 and sunset at 15:48. On the last day of December, in Riga, sunrise is at 09:01 and sunset at 15:52 EET.
Sunshine
The month with the least sunshine is December, with an average of 2h of sunshine.UV index
January, February and December, with an average maximum UV index of 1, are months with the lowest UV index in Riga. A UV Index reading of 2, and below, represents a low health risk from unsafe exposure to UV radiation for the ordinary person.Note: A maximum daily UV index of 1 during December morphs into the following directions:
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. For health reasons, it's advisable to reduce direct sun exposure during peak hours around midday. Limit sun-induced ocular harm with sunglasses that feature UVA and UVB filtration. Be careful! The Sun's UV radiation can nearly be doubled by the reflective quality of snow.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How cold is it in Riga in December?
What is the average humidity in December in Riga?
How many days does it rain in December in Riga?
How much does it snow in Riga in December?
What is the water temperature in December in Riga?
What is the month with the shortest days in Riga?
How many hours of daylight does Riga have in December?
When are sunrise and sunset in December in Riga?
What is the month with the least sunshine in Riga?
How many hours of sunshine does Riga have in December?
When is the lowest UV index in Riga?
What is the UV index reading in December in Riga?
Average temperature in December
Riga, Latvia
- Average high temperature in December: 1.4°C
The warmest month (with the highest average high temperature) is July (22.4°C).
The month with the lowest average high temperature is January (-1.3°C).
- Average low temperature in December: -1.3°C
The month with the highest average low temperature is July (14.5°C).
The coldest month (with the lowest average low temperature) is January (-4.8°C).
Average pressure in December
Riga, Latvia
- Average pressure in December: 1011.4mbar
The month with the highest atmospheric pressure is October (1016.1mbar).
The month with the lowest atmospheric pressure is December (1011.4mbar).
Average wind speed in December
Riga, Latvia
- Average wind speed in December: 18.9km/h
The windiest month (with the highest average wind speed) is December (18.9km/h).
The calmest month (with the lowest average wind speed) is May (13.1km/h).
Average humidity in December
Riga, Latvia
- Average humidity in December: 88%
The months with the highest relative humidity are January and February (90%).
The month with the lowest relative humidity is May (72%).
Average rainfall in December
Riga, Latvia
- Average rainfall in December: 23mm
The wettest month (with the highest rainfall) is July (47mm).
The driest month (with the least rainfall) is April (19mm).
Average rainfall days in December
Riga, Latvia
- Average rainfall days in December: 9.9 days
The month with the highest number of rainy days is July (16.4 days).
The month with the least rainy days is February (6 days).
Average snowfall in December
Riga, Latvia
- Average snowfall in December: 70mm
The month with the highest snowfall is January (84mm).
The months with the least snowfall are May, June, July, August and September (0mm).
Average snowfall days in December
Riga, Latvia
- Average snowfall days in December: 11.6 days
The month with the highest number of snowfall days is January (13.8 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average sea temperature in December
Riga, Latvia
- Average sea temperature in December: 4°C
The best month for swimming (with the highest average sea temperature) is August (17°C).
The coldest months (with the lowest average sea temperature) are February and March (1°C).
Average daylight in December /
Average sunshine in December
Riga, Latvia
- Average daylight in December: 6h and 5min
The month with the longest days is June (Average daylight: 17h and 48min).
The month with the shortest days is December (Average daylight: 6h and 54min).
- Average sunshine in December: 2h
The month with the most sunshine is June (Average sunshine: 11h).
The month with the least sunshine is December (Average sunshine: 2h).
Average sunshine days in December
Riga, Latvia
- Average sunshine days in December: 10.1 days
The month with the most sunshine days is April (16.8 days).
The month with the least sunshine days is December (10.1 days).
Average UV index in December
Riga, Latvia
- Average UV index in December: 1
The months with the highest UV index are June, July and August (UV index 5).
The months with the lowest UV index are January, February and December (UV index 1).
Average cloud cover in December
Riga, Latvia
- Average cloud cover in December: 79
The month with the most cloud cover is December (Cloud cover 79).
The month with the least cloud cover is August (Cloud cover 35).
Average visibility in December
Riga, Latvia
- Average visibility in December: 9km
The months with the highest visibility are June, July, August and September (10km).
The months with the lowest visibility are January and February (8km).
Riga, Latvia
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