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 lowest temperatures are recorded in January, with averages reaching a high of -7.7°C (18.1°F) and a low of -12.7°C (9.1°F).Humidity
The months with the highest humidity are January, February and December, with an average relative humidity of 96%.Rainfall
In Jonku, Finland, during January, the rain falls for 2.7 days and regularly aggregates up to 37mm (1.46") of precipitation. Throughout the year, there are 134 rainfall days, and 527mm (20.75") of precipitation is accumulated.Snowfall
January through June, September through December are months with snowfall. In Jonku, in January, snow falls for 22.2 days, with typically accumulated 252mm (9.92") of snow. Throughout the year, there are 133.6 snowfall days, and 1512mm (59.53") of snow is accumulated.Daylight
The average length of the day in January is 5h and 5min.On the first day of the month, sunrise is at 10:23 and sunset at 14:05. On the last day of January, sunrise is at 09:05 and sunset at 15:43 EET.
Sunshine
The average sunshine in January is 1.1h.UV index
The months with the lowest UV index are January through March, October through December, with an average maximum UV index of 1. A UV Index estimate of 2, and below, represents a low threat to health from exposure to the Sun's UV radiation for ordinary individuals.Note: A daily maximum UV index of 1 in January translates into the following instructions:
Long-term sun exposure is typically not a concern for most. However, those with sensitive skin, infants, and children must always have protection. The Sun's most harmful UV rays are emitted around midday; avoid staying outdoors for long during this time. For holistic sun protection encompassing the eyes, ears, face, and neck, a wide-brim hat is key. Remember this! The UV radiation of the Sun can be nearly doubled by the reflective properties of snow.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are the coldest months?
How cold is January?
What is the most humid month?
What is the average humidity in January?
How much does it rain in January?
How much does it snow in January?
What is the average length of the day in January?
What time are sunrise and sunset in January?
How long on average sun shines in January?
When is the lowest UV index?
What is the UV index intensity in January?
Average temperature in January
Jonku, Finland
- Average high temperature in January: -7.7°C
The warmest month (with the highest average high temperature) is July (20.7°C).
The month with the lowest average high temperature is January (-7.7°C).
- Average low temperature in January: -12.7°C
The month with the highest average low temperature is July (11°C).
The coldest month (with the lowest average low temperature) is January (-12.7°C).
Average pressure in January
Jonku, Finland
- Average pressure in January: 1009.9mbar
The month with the highest atmospheric pressure is May (1014.1mbar).
The month with the lowest atmospheric pressure is December (1005.7mbar).
Average wind speed in January
Jonku, Finland
- Average wind speed in January: 11.4km/h
The windiest month (with the highest average wind speed) is February (11.7km/h).
The calmest month (with the lowest average wind speed) is July (9.5km/h).
Average humidity in January
Jonku, Finland
- Average humidity in January: 96%
The months with the highest relative humidity are January, February and December (96%).
The month with the lowest relative humidity is June (69%).
Average rainfall in January
Jonku, Finland
- Average rainfall in January: 37mm
The wettest month (with the highest rainfall) is July (66mm).
The driest month (with the least rainfall) is April (29mm).
Average rainfall days in January
Jonku, Finland
- Average rainfall days in January: 2.7 days
The month with the highest number of rainy days is August (18.6 days).
The month with the least rainy days is February (2.6 days).
Average snowfall in January
Jonku, Finland
- Average snowfall in January: 252mm
The month with the highest snowfall is March (284mm).
The months with the least snowfall are July and August (0mm).
Average snowfall days in January
Jonku, Finland
- Average snowfall days in January: 22.2 days
The month with the highest number of snowfall days is December (23.5 days).
The months with the least snowfall days are July and August (0 days).
Average daylight in January /
Average sunshine in January
Jonku, Finland
- Average daylight in January: 5h and 1min
The month with the longest days is June (Average daylight: 22h and 0min).
The month with the shortest days is December (Average daylight: 3h and 42min).
- Average sunshine in January: 1h and 1min
The month with the most sunshine is July (Average sunshine: 11h and 30min).
The month with the least sunshine is December (Average sunshine: 0h and 42min).
Average sunshine days in January
Jonku, Finland
- Average sunshine days in January: 9.1 days
The month with the most sunshine days is October (12 days).
The month with the least sunshine days is April (6.8 days).
Average UV index in January
Jonku, 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, March, October, November and December (UV index 1).
Average cloud cover in January
Jonku, Finland
- Average cloud cover in January: 81
The months with the most cloud cover are January and December (Cloud cover 81).
The month with the least cloud cover is July (Cloud cover 47).
Average visibility in January
Jonku, Finland
- Average visibility in January: 5km
The months with the highest visibility are May, June and July (9km).
The months with the lowest visibility are January, February, March, April and December (5km).
