April weather forecastPosio, Finland
April weather for Posio, Finland: The months with the least rainfall in Posio are January and April Rain falls for 8 days and accumulates 31mm (1.22") of rain. In Posio, during April, snow falls for 20.2 days and regularly aggregates up to 175mm (6.89") of snow.
April
Weather in April
April in Posio, Finland, is an icy spring month, with an average temperature fluctuating between -4.4°C (24.1°F) and 1.4°C (34.5°F).Temperature
The shift into April brings a slight increase in the average high-temperature, moving from a subzero cold -3.5°C (25.7°F) in March to a wintry 1.4°C (34.5°F). An average nighttime temperature of -4.4°C (24.1°F) is witnessed throughout April.Humidity
In April, the average relative humidity in Posio is 94%.Rainfall
January and April are months with the least rain when the rain falls for 8 days and typically aggregates up to 31mm (1.22") of rain.Snowfall
January through June, September through December are months with snowfall. In Posio, during April, snow falls for 20.2 days and regularly aggregates up to 175mm (6.89") of snow. In Posio, during the entire year, snow falls for 154.7 days and aggregates up to 1613mm (63.5") of snow.Daylight
In Posio, the average length of the day in April is 15h and 28min.On the first day of the month, sunrise is at 06:18 and sunset at 20:03. On the last day of April, sunrise is at 04:24 and sunset at 21:44 EEST.
Sunshine
In April, the average sunshine in Posio is 3.3h.UV index
The months with the lowest UV index are January through April, October through December, with an average maximum UV index of 1. A UV Index reading of 2, and below, represents a minimal health vulnerability from unprotected exposure to Sun's UV rays for the average person.Note: The daily maximum UV index of 1 in April interprets into the following advice:
Many can withstand an hour in the sun without burning, yet children must always have protection against sunlight. For health reasons, it's advisable to reduce direct sun exposure during peak hours around midday. Wearing a wide-brim hat can block approximately 50% of UV radiation, protecting the eyes. Heed this! Snow reflection can almost augment the UV radiation of the sun by double.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in April
Posio, Finland
- Average high temperature in April: 1.4°C
The warmest month (with the highest average high temperature) is July (19.2°C).
The month with the lowest average high temperature is January (-8.4°C).
- Average low temperature in April: -4.4°C
The month with the highest average low temperature is July (10.3°C).
The coldest month (with the lowest average low temperature) is January (-13.8°C).
Average pressure in April
Posio, Finland
- Average pressure in April: 1011.4mbar
The month with the highest atmospheric pressure is May (1014.4mbar).
The month with the lowest atmospheric pressure is December (1006.1mbar).
Average wind speed in April
Posio, Finland
- Average wind speed in April: 11.4km/h
The windiest month (with the highest average wind speed) is November (12.9km/h).
The calmest month (with the lowest average wind speed) is July (10.5km/h).
Average humidity in April
Posio, Finland
- Average humidity in April: 94%
The month with the highest relative humidity is January (97%).
The month with the lowest relative humidity is June (70%).
Average rainfall in April
Posio, Finland
- Average rainfall in April: 31mm
The wettest month (with the highest rainfall) is July (57mm).
The driest months (with the least rainfall) are January and April (31mm).
Average rainfall days in April
Posio, Finland
- Average rainfall days in April: 8 days
The month with the highest number of rainy days is August (18.4 days).
The month with the least rainy days is February (1.3 days).
Average snowfall in April
Posio, Finland
- Average snowfall in April: 175mm
The month with the highest snowfall is December (283mm).
The months with the least snowfall are July and August (0mm).
Average snowfall days in April
Posio, Finland
- Average snowfall days in April: 20.2 days
The month with the highest number of snowfall days is December (24.5 days).
The month with the least snowfall days is July (0 days).
Average daylight in April /
Average sunshine in April
Posio, Finland
- Average daylight in April: 15h and 30min
The month with the longest days is July (Average daylight: 20h and 18min).
The month with the shortest days is December (Average daylight: 3h and 6min).
- Average sunshine in April: 3h and 18min
The month with the most sunshine is July (Average sunshine: 10h and 36min).
The month with the least sunshine is December (Average sunshine: 0h and 42min).
Average sunshine days in April
Posio, Finland
- Average sunshine days in April: 5.3 days
The month with the most sunshine days is July (11.6 days).
The month with the least sunshine days is April (5.3 days).
Average UV index in April
Posio, Finland
- Average UV index in April: 1
The months with the highest UV index are June, July and August (UV index 4).
The months with the lowest UV index are January, February, March, April, October, November and December (UV index 1).
Average cloud cover in April
Posio, Finland
- Average cloud cover in April: 80
The month with the most cloud cover is February (Cloud cover 85).
The month with the least cloud cover is July (Cloud cover 51).
Average visibility in April
Posio, Finland
- Average visibility in April: 5km
The months with the highest visibility are June and July (9km).
The months with the lowest visibility are January, February, March, April and December (5km).





