December weather forecastKerava, Finland
December
Weather in December
Kerava in December is plunged into a deep freeze, with temperatures reaching no more than 0.5°C (32.9°F) at best. The city hibernates under frosts, with plentiful snowfall recorded at 66mm (2.6"). Blanketed skies, fewer sunshine hours, and an ambience marked by chill and dampness, make for a scenic winter wonderland. The high humidity coupled with mighty winds, impart an intense cold feel to the air. Concluding the year, December brings an air of festivity, softened by the soft glow of Christmas lights, gleaming against the snowy backdrop.Temperature
The start of December in Kerava involves a subtle temperature drop, shifting from an icy 3.9°C (39°F) in November to a still cold 0.5°C (32.9°F). Nighttime temperature sees a small decrement from daytime highs, dipping to an average of -2.7°C (27.1°F) during December.Humidity
The average relative humidity in December is 90%.Rainfall
In Kerava, in December, it is raining for 7.8 days, with typically 26mm (1.02") of accumulated precipitation. In Kerava, during the entire year, the rain falls for 120 days and collects up to 353mm (13.9") of precipitation.Snowfall
January through May, October through December are months with snowfall in Kerava. In Kerava, in December, snow falls for 10.8 days, with typically accumulated 66mm (2.6") of snow. Throughout the year, there are 53.9 snowfall days, and 433mm (17.05") of snow is accumulated.Daylight
With an average of 5h and 54min of daylight, December has the shortest days of the year.On the first day of December, sunrise is at 08:58 and sunset at 15:18. On the last day of the month, sunrise is at 09:25 and sunset at 15:19 EET.
Sunshine
The month with the least sunshine in Kerava is December, with an average of 1.9h of sunshine.UV index
January through March, November and December, with an average maximum UV index of 1, are months with the lowest UV index. A UV Index reading of 2, and below, represents a low threat to health from unsafe exposure to UV radiation for average individuals.Note: The maximum daily UV index of 1 during December translates into the following directions:
While extended sun exposure does not significantly affect most people, those with sensitive skin, children, and infants should always be protected. During midday, the Sun's radiation is strongest, and it's advisable to reduce direct exposure. Prioritize a wide-brim hat for comprehensive sun defense for your face, neck, eyes, and ears. Take heed! Reflection from the snow can almost amplify the Sun's UV radiation by double.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Kerava, Finland
- Average high temperature in December: 0.5°C
The warmest month (with the highest average high temperature) is July (21.3°C).
The month with the lowest average high temperature is January (-2.8°C).
- Average low temperature in December: -2.7°C
The month with the highest average low temperature is July (13.7°C).
The coldest month (with the lowest average low temperature) is January (-6.5°C).
Average pressure in December
Kerava, Finland
- Average pressure in December: 1008.6mbar
The month with the highest atmospheric pressure is May (1014.9mbar).
The month with the lowest atmospheric pressure is December (1008.6mbar).
Average wind speed in December
Kerava, Finland
- Average wind speed in December: 16.9km/h
The windiest month (with the highest average wind speed) is December (16.9km/h).
The calmest month (with the lowest average wind speed) is July (11.8km/h).
Average humidity in December
Kerava, Finland
- Average humidity in December: 90%
The month with the highest relative humidity is February (92%).
The month with the lowest relative humidity is May (69%).
Average rainfall in December
Kerava, Finland
- Average rainfall in December: 26mm
The wettest month (with the highest rainfall) is October (48mm).
The driest month (with the least rainfall) is May (15mm).
Average rainfall days in December
Kerava, Finland
- Average rainfall days in December: 7.8 days
The months with the highest number of rainy days are July and August (15.5 days).
The month with the least rainy days is February (3 days).
Average snowfall in December
Kerava, Finland
- Average snowfall in December: 66mm
The month with the highest snowfall is January (94mm).
The months with the least snowfall are June, July, August and September (0mm).
Average snowfall days in December
Kerava, Finland
- Average snowfall days in December: 10.8 days
The month with the highest number of snowfall days is January (11 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Kerava, Finland
- Average daylight in December: 5h and 54min
The month with the longest days is June (Average daylight: 18h and 54min).
The month with the shortest days is December (Average daylight: 5h and 54min).
- Average sunshine in December: 1h and 54min
The month with the most sunshine is June (Average sunshine: 12h and 24min).
The month with the least sunshine is December (Average sunshine: 1h and 54min).
Average sunshine days in December
Kerava, Finland
- Average sunshine days in December: 14.3 days
The month with the most sunshine days is May (21.9 days).
The month with the least sunshine days is November (11.1 days).
Average UV index in December
Kerava, Finland
- Average UV index in December: 1
The month with the highest UV index is July (UV index 5).
The months with the lowest UV index are January, February, March, November and December (UV index 1).
Average cloud cover in December
Kerava, Finland
- Average cloud cover in December: 75
The months with the most cloud cover are February and December (Cloud cover 75).
The months with the least cloud cover are July and August (Cloud cover 37).
Average visibility in December
Kerava, Finland
- 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 February and March (7km).
