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
January
Weather in January
Temperature
The temperature hits its lowest levels in January and February, recording an average high-temperature of -1.5°C (29.3°F).Humidity
In January, the average relative humidity is 89%.Rainfall
In January, the rain falls for 6.2 days. Throughout January, 30mm (1.18") of precipitation is accumulated. Throughout the year, there are 135.2 rainfall days, and 422mm (16.61") of precipitation is accumulated.Snowfall
Months with snowfall in Köyliö are January through May, October through December. In Köyliö, in January, during 12 snowfall days, 87mm (3.43") of snow is typically accumulated. In Köyliö, during the entire year, snow falls for 58.1 days and aggregates up to 382mm (15.04") of snow.Daylight
In Köyliö, the average length of the day in January is 6h and 34min.On the first day of January, sunrise is at 09:43 and sunset at 15:24. On the last day of the month, sunrise is at 08:54 and sunset at 16:33 EET.
Sunshine
The months with the least sunshine in Köyliö are January and December, with an average of 2.1h of sunshine.UV index
January through March and December, with an average maximum UV index of 1, are months with the lowest UV index. A UV Index estimate of 2, and below, represents a low health risk from exposure to the Sun's UV rays for the ordinary person.Note: The UV index of 1 during January leads to these advisories:
Most individuals face no significant issues with extended sun exposure, but it is always essential to protect children, babies, and those with sensitive skin. Considering the Sun's intensity during midday, it's wise to minimize direct exposure. Select sunglasses that boast both UVA and UVB protection to limit the adverse effects of the sun on the eyes. Be cautious! The UV radiation from the Sun can be magnified almost twofold by snow reflection.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are the coldest months in Köyliö?
How cold is it in Köyliö in January?
What is the average humidity in January in Köyliö?
How many days does it rain in January in Köyliö?
How many days does it snow in January in Köyliö?
What is the average length of the day in January in Köyliö?
When is the sunrise / sunset in January in Köyliö?
What are the months with the least sunshine in Köyliö?
How many hours of sunshine does Köyliö have in January?
What are the months with the lowest UV index in Köyliö?
What is the UV index reading in January in Köyliö?
Average temperature in January
Köyliö, Finland
- Average high temperature in January: -1.5°C
The warmest month (with the highest average high temperature) is July (19.7°C).
The months with the lowest average high temperature are January and February (-1.5°C).
- Average low temperature in January: -4.7°C
The month with the highest average low temperature is August (14°C).
The coldest month (with the lowest average low temperature) is February (-5°C).
Average pressure in January
Köyliö, Finland
- Average pressure in January: 1010.6mbar
The month with the highest atmospheric pressure is May (1014.8mbar).
The month with the lowest atmospheric pressure is December (1006.9mbar).
Average wind speed in January
Köyliö, Finland
- Average wind speed in January: 19km/h
The windiest month (with the highest average wind speed) is December (20.7km/h).
The calmest month (with the lowest average wind speed) is July (14.5km/h).
Average humidity in January
Köyliö, Finland
- Average humidity in January: 89%
The month with the highest relative humidity is February (91%).
The month with the lowest relative humidity is May (71%).
Average rainfall in January
Köyliö, Finland
- Average rainfall in January: 30mm
The wettest month (with the highest rainfall) is July (56mm).
The driest month (with the least rainfall) is April (21mm).
Average rainfall days in January
Köyliö, Finland
- Average rainfall days in January: 6.2 days
The month with the highest number of rainy days is July (15.8 days).
The month with the least rainy days is February (4.3 days).
Average snowfall in January
Köyliö, Finland
- Average snowfall in January: 87mm
The month with the highest snowfall is March (88mm).
The months with the least snowfall are June, July, August and September (0mm).
Average snowfall days in January
Köyliö, Finland
- Average snowfall days in January: 12 days
The month with the highest number of snowfall days is March (13 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in January /
Average sunshine in January
Köyliö, Finland
- Average daylight in January: 6h and 4min
The month with the longest days is June (Average daylight: 19h and 12min).
The month with the shortest days is December (Average daylight: 5h and 42min).
- Average sunshine in January: 2h and 1min
The month with the most sunshine is June (Average sunshine: 12h and 18min).
The months with the least sunshine are January and December (Average sunshine: 2h and 6min).
Average sunshine days in January
Köyliö, Finland
- Average sunshine days in January: 12.6 days
The month with the most sunshine days is June (16.8 days).
The month with the least sunshine days is December (10.7 days).
Average UV index in January
Köyliö, Finland
- Average UV index in January: 1
The months with the highest UV index are June and July (UV index 5).
The months with the lowest UV index are January, February, March and December (UV index 1).
Average cloud cover in January
Köyliö, 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 36).
Average visibility in January
Köyliö, Finland
- Average visibility in January: 8km
The months with the highest visibility are May, June, July, August and September (10km).
The months with the lowest visibility are January, February and March (8km).
