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
Weather in April
Temperature
April's arrival in Riihimäki, Finland, coincides with a temperature rise, moving from March's icy 0.7°C (33.3°F) to a frosty 7.8°C (46°F). Throughout April, the average low-temperature records at an icy 0.2°C (32.4°F).Humidity
The average relative humidity in April is 79%.Rainfall
In April, the rain falls for 12.9 days. Throughout April, 26mm (1.02") of precipitation is accumulated. Throughout the year, there are 117.8 rainfall days, and 373mm (14.69") of precipitation is accumulated.Snowfall
Months with snowfall in Riihimäki are January through May, October through December. In Riihimäki, in April, snow falls for 6.3 days, with typically accumulated 63mm (2.48") of snow. Throughout the year, in Riihimäki, there are 102.9 snowfall days, and 1059mm (41.69") of snow is accumulated.Daylight
The average length of the day in April is 14h and 42min.On the first day of April in Riihimäki, sunrise is at 06:42 and sunset at 20:06. On the last day of the month, sunrise is at 05:15 and sunset at 21:20 EEST.
Sunshine
The average sunshine in April in Riihimäki, Finland, is 6.3h.UV index
The average daily maximum UV index in April in Riihimäki is 3. A UV Index reading of 3 to 5 represents a medium health hazard from unprotected exposure to Sun's UV rays for average individuals.Note: The UV index of 3 during April leads to these advisories:
Preventative actions are necessary - Recommendations to ward off sunburn are given. The most potent solar radiation is around mid-day, so one should minimize exposure to direct sunlight during this period. To mitigate harm from sun exposure, pick sunglasses offering UVA and UVB defense. Be alert! Nearly double the UV rays from the Sun can be reflected by snow.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the usual temperature for Riihimäki in April?
What is the average humidity in April in Riihimäki?
How many days does it rain in April in Riihimäki?
How much does it snow in Riihimäki in April?
How many hours of daylight does Riihimäki have in April?
What time are sunrise and sunset in April in Riihimäki?
How long on average sun shines in April in Riihimäki?
What is the UV index reading in April in Riihimäki?
Average temperature in April
Riihimäki, Finland
- Average high temperature in April: 7.8°C
The warmest month (with the highest average high temperature) is July (22.2°C).
The month with the lowest average high temperature is January (-3.8°C).
- Average low temperature in April: 0.2°C
The month with the highest average low temperature is July (12.4°C).
The coldest month (with the lowest average low temperature) is January (-8.3°C).
Average pressure in April
Riihimäki, Finland
- Average pressure in April: 1013.4mbar
The month with the highest atmospheric pressure is May (1014.9mbar).
The month with the lowest atmospheric pressure is December (1008.3mbar).
Average wind speed in April
Riihimäki, Finland
- Average wind speed in April: 9.9km/h
The windiest month (with the highest average wind speed) is December (11.4km/h).
The calmest month (with the lowest average wind speed) is August (9.1km/h).
Average humidity in April
Riihimäki, Finland
- Average humidity in April: 79%
The month with the highest relative humidity is February (95%).
The month with the lowest relative humidity is May (67%).
Average rainfall in April
Riihimäki, Finland
- Average rainfall in April: 26mm
The wettest month (with the highest rainfall) is December (44mm).
The driest month (with the least rainfall) is August (18mm).
Average rainfall days in April
Riihimäki, Finland
- Average rainfall days in April: 12.9 days
The month with the highest number of rainy days is November (13.5 days).
The month with the least rainy days is February (4.2 days).
Average snowfall in April
Riihimäki, Finland
- Average snowfall in April: 63mm
The month with the highest snowfall is February (229mm).
The months with the least snowfall are June, July, August and September (0mm).
Average snowfall days in April
Riihimäki, Finland
- Average snowfall days in April: 6.3 days
The month with the highest number of snowfall days is January (22.2 days).
The months with the least snowfall days are June, July and August (0 days).
Average daylight in April /
Average sunshine in April
Riihimäki, Finland
- Average daylight in April: 14h and 4min
The month with the longest days is June (Average daylight: 19h and 0min).
The month with the shortest days is December (Average daylight: 5h and 48min).
- Average sunshine in April: 6h and 2min
The month with the most sunshine is June (Average sunshine: 11h and 42min).
The month with the least sunshine is December (Average sunshine: 1h and 30min).
Average sunshine days in April
Riihimäki, Finland
- Average sunshine days in April: 12.3 days
The month with the most sunshine days is June (20.8 days).
The month with the least sunshine days is February (6.5 days).
Average UV index in April
Riihimäki, Finland
- Average UV index in April: 3
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, November and December (UV index 1).
Average cloud cover in April
Riihimäki, Finland
- Average cloud cover in April: 59
The months with the most cloud cover are January and February (Cloud cover 78).
The month with the least cloud cover is August (Cloud cover 42).
Average visibility in April
Riihimäki, Finland
- Average visibility in April: 8km
The months with the highest visibility are May, June and July (9km).
The months with the lowest visibility are January and February (5km).
Riihimäki, Finland
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