Contents
- Weather in January
- Frequently asked questions
- Average temperature in January
- Average pressure in January
- Average wind speed in January
- Average humidity in January
- Average rainfall in January
- Average rainfall days in January
- Average snowfall in January
- Average snowfall days in January
- Average daylight in January
- Average sunshine in January
- Average sunshine days in January
- Average UV index in January
- Average cloud cover in January
- Average visibility in January
Weather in January
Temperature
The transition from December to January sees average high-temperatures adjusting to a still wintry 1.3°C (34.3°F), from a not significantly different 3.5°C (38.3°F). Nights in January cool down in Björby, indicating a minor disparity from daytime highs with an average low-temperature of -0.8°C (30.6°F).Humidity
In January, the average relative humidity in Björby is 82%.Rainfall
In January, in Björby, Finland, the rain falls for 5.6 days. Throughout January, 19mm (0.75") of precipitation is accumulated. In Björby, Finland, during the entire year, the rain falls for 116.3 days and collects up to 274mm (10.79") of precipitation.Snowfall
Months with snowfall in Björby are January through May, October through December. January is the month with the most snowfall in Björby. Snow falls for 10.1 days and accumulates 44mm (1.73") of snow.Daylight
The average length of the day in January is 6h and 48min.On the first day of January, sunrise is at 09:44 and sunset at 15:41. On the last day of the month, sunrise is at 08:57 and sunset at 16:47 EET.
Sunshine
The months with the least sunshine are January and December, with an average of 2.2h of sunshine.UV index
The months with the lowest UV index in Björby are January through March, with an average maximum UV index of 1. A UV Index reading of 2, and below, represents a minimal health vulnerability from exposure to the Sun's UV rays for average individuals.Note: An average UV index of 1 in January transforms into this advice:
For the majority, extended sun exposure is not of great concern. Infants and people with sensitive skin must always be protected. The Sun's most harmful UV rays are emitted around midday; avoid staying outdoors for long during this time. A wide-brimmed hat is a shield, deflecting up to 50% of harmful UV radiation from eyes. Observe! Snow reflection can nearly intensify the Sun's UV radiation twofold.
Frequently asked questions
How cold is January in Björby?
What is the average humidity in January in Björby?
How much does it rain in Björby in January?
When does it snow the most in Björby?
How many days does it snow in January in Björby?
What is the average length of the day in January in Björby?
When are sunrise and sunset in January in Björby?
What are the months with the least sunshine in Björby?
How long on average sun shines in January in Björby?
What is the month with the lowest UV index in Björby?
What is the UV index intensity in January in Björby?
Average temperature in January
Björby, Finland
- Average high temperature in January: 1.3°C
The warmest month (with the highest average high temperature) is August (17.6°C).
The month with the lowest average high temperature is February (0.5°C).
- Average low temperature in January: -0.8°C
The month with the highest average low temperature is August (15.9°C).
The coldest month (with the lowest average low temperature) is February (-1.5°C).
Average pressure in January
Björby, Finland
- Average pressure in January: 1010.9mbar
The month with the highest atmospheric pressure is May (1014.9mbar).
The month with the lowest atmospheric pressure is December (1007.4mbar).
Average wind speed in January
Björby, Finland
- Average wind speed in January: 30.1km/h
The windiest month (with the highest average wind speed) is December (31.7km/h).
The calmest month (with the lowest average wind speed) is July (20km/h).
Average humidity in January
Björby, Finland
- Average humidity in January: 82%
The month with the highest relative humidity is February (84%).
The months with the lowest relative humidity are August and October (78%).
Average rainfall in January
Björby, Finland
- Average rainfall in January: 19mm
The wettest month (with the highest rainfall) is October (32mm).
The driest month (with the least rainfall) is April (11mm).
Average rainfall days in January
Björby, Finland
- Average rainfall days in January: 5.6 days
The month with the highest number of rainy days is August (14.2 days).
The month with the least rainy days is February (3.8 days).
Average snowfall in January
Björby, Finland
- Average snowfall in January: 44mm
The month with the highest snowfall is January (44mm).
The months with the least snowfall are June, July, August and September (0mm).
Average snowfall days in January
Björby, Finland
- Average snowfall days in January: 10.1 days
The month with the highest number of snowfall days is January (10.1 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in January /
Average sunshine in January
Björby, Finland
- Average daylight in January: 6h and 5min
The month with the longest days is June (Average daylight: 18h and 48min).
The month with the shortest days is December (Average daylight: 6h and 0min).
- Average sunshine in January: 2h and 1min
The month with the most sunshine is July (Average sunshine: 12h and 0min).
The months with the least sunshine are January and December (Average sunshine: 2h and 12min).
Average sunshine days in January
Björby, Finland
- Average sunshine days in January: 12.2 days
The month with the most sunshine days is May (20.5 days).
The month with the least sunshine days is December (11.1 days).
Average UV index in January
Björby, Finland
- Average UV index in January: 1
The month with the highest UV index is July (UV index 5).
The months with the lowest UV index are January, February and March (UV index 1).
Average cloud cover in January
Björby, Finland
- Average cloud cover in January: 71
The month with the most cloud cover is January (Cloud cover 71).
The months with the least cloud cover are July and August (Cloud cover 35).
Average visibility in January
Björby, Finland
- Average visibility in January: 9km
The months with the highest visibility are April, May, June, July, August, September and October (10km).
The months with the lowest visibility are January, February, March, November and December (9km).
Björby, Finland
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