Contents
- Weather in April
- Frequently asked questions
- Average temperature in April
- Average pressure in April
- Average wind speed in April
- Average humidity in April
- Average rainfall in April
- Average rainfall days in April
- Average snowfall in April
- Average snowfall days in April
- Average daylight in April
- Average sunshine in April
- Average sunshine days in April
- Average UV index in April
- Average cloud cover in April
- Average visibility in April
April
Weather in April
Temperature
The shift into April uncovers an average high-temperature of a still cold 3.9°C (39°F), subtly different from the previous month. A consistent average low-temperature of 1.9°C (35.4°F), with a minor variance from the daytime highs, is noted during the nights of April.Humidity
In April, the average relative humidity is 82%.Rainfall
The month with the least rainfall is April, when the rain falls for 8.8 days and typically collects 12mm (0.47") of precipitation.Snowfall
January through May, October through December are months with snowfall. In April, it is snowing for 2 days. Throughout April, 8mm (0.31") of snow is accumulated. Throughout the year, there are 38.5 snowfall days, and 160mm (6.3") of snow is accumulated.Daylight
In April, the average length of the day is 14h and 37min.On the first day of April, sunrise is at 06:59 and sunset at 20:20. On the last day of the month, sunrise is at 05:35 and sunset at 21:31 EEST.
Sunshine
The average sunshine in April is 8.6h.UV index
In Karlby, the average daily maximum UV index in April is 2. A UV Index of 2, and less, symbolizes a minimal health vulnerability from exposure to the Sun's UV rays for the ordinary person.Note: The maximum UV index of 2 during April translates into these guidelines:
Despite most people tolerating extended sun exposure, it is critical to always protect those with sensitive skin, infants, and children. The mid-day Sun emits the most powerful UV radiation, so seek shade and minimize exposure. Employ a wide-brim hat for potent defense against up to 50% of UV rays. Keep in mind! Snow's reflective quality can nearly double the intensity of the Sun's UV radiation.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How cold is it in April?
What is the average humidity in April?
What is the driest month?
How much does it rain in April?
How much does it snow in Karlby in April?
What is the average length of the day in April?
What time are sunrise and sunset in April?
How many hours of sunshine does Karlby have in April?
What is the UV index intensity in April?
Average temperature in April
Karlby, Finland
- Average high temperature in April: 3.9°C
The warmest month (with the highest average high temperature) is August (18.1°C).
The month with the lowest average high temperature is February (0.3°C).
- Average low temperature in April: 1.9°C
The month with the highest average low temperature is August (16.3°C).
The coldest month (with the lowest average low temperature) is February (-1.7°C).
Average pressure in April
Karlby, Finland
- Average pressure in April: 1014mbar
The month with the highest atmospheric pressure is May (1015mbar).
The month with the lowest atmospheric pressure is December (1007.8mbar).
Average wind speed in April
Karlby, Finland
- Average wind speed in April: 23.7km/h
The windiest month (with the highest average wind speed) is December (34.1km/h).
The calmest month (with the lowest average wind speed) is July (21.2km/h).
Average humidity in April
Karlby, Finland
- Average humidity in April: 82%
The months with the highest relative humidity are February and March (84%).
The months with the lowest relative humidity are August, September and October (78%).
Average rainfall in April
Karlby, Finland
- Average rainfall in April: 12mm
The wettest month (with the highest rainfall) is September (38mm).
The driest month (with the least rainfall) is April (12mm).
Average rainfall days in April
Karlby, Finland
- Average rainfall days in April: 8.8 days
The month with the highest number of rainy days is August (14.8 days).
The month with the least rainy days is February (5.8 days).
Average snowfall in April
Karlby, Finland
- Average snowfall in April: 8mm
The month with the highest snowfall is January (41mm).
The months with the least snowfall are June, July, August and September (0mm).
Average snowfall days in April
Karlby, Finland
- Average snowfall days in April: 2 days
The month with the highest number of snowfall days is January (10.3 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in April /
Average sunshine in April
Karlby, Finland
- Average daylight in April: 14h and 4min
The month with the longest days is June (Average daylight: 18h and 42min).
The month with the shortest days is December (Average daylight: 6h and 6min).
- Average sunshine in April: 8h and 4min
The month with the most sunshine is July (Average sunshine: 12h and 0min).
The month with the least sunshine is December (Average sunshine: 2h and 0min).
Average sunshine days in April
Karlby, Finland
- Average sunshine days in April: 17.8 days
The month with the most sunshine days is May (19.3 days).
The month with the least sunshine days is December (8.9 days).
Average UV index in April
Karlby, Finland
- Average UV index in April: 2
The month with the highest UV index is July (UV index 5).
The months with the lowest UV index are January, February, March and December (UV index 1).
Average cloud cover in April
Karlby, Finland
- Average cloud cover in April: 43
The months with the most cloud cover are January and December (Cloud cover 71).
The months with the least cloud cover are July and August (Cloud cover 33).
Average visibility in April
Karlby, Finland
- Average visibility in April: 10km
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).
