Contents
- Weather in May
- Frequently asked questions
- Average temperature in May
- Average pressure in May
- Average wind speed in May
- Average humidity in May
- Average rainfall in May
- Average rainfall days in May
- Average snowfall in May
- Average snowfall days in May
- Average daylight in May
- Average sunshine in May
- Average sunshine days in May
- Average UV index in May
- Average cloud cover in May
- Average visibility in May
Weather in May
Temperature
The arrival of May in Riihimäki brings an increase in high-temperatures, moving from a chilly 7.8°C (46°F) in April to a refreshing 15.7°C (60.3°F). In Riihimäki, the May nights cool down to an average low of 6°C (42.8°F).Humidity
The least humid month is May, with an average relative humidity of 67%.Rainfall
In Riihimäki, in May, it is raining for 10.8 days, with typically 29mm (1.14") of accumulated precipitation. In Riihimäki, during the entire year, the rain falls for 117.8 days and collects up to 373mm (14.69") of precipitation.Snowfall
Months with snowfall in Riihimäki are January through May, October through December. May is the last month it regularly snows in Riihimäki. During 0.9 snowfall days, in May, Riihimäki aggregates 27mm (1.06") of snow. In Riihimäki, Finland, during the entire year, snow falls for 102.9 days and aggregates up to 1059mm (41.69") of snow.Daylight
The average length of the day in May in Riihimäki is 17h and 23min.On the first day of May, sunrise is at 05:12 and sunset at 21:23. On the last day of the month, sunrise is at 04:02 and sunset at 22:34 EEST.
Sunshine
In Riihimäki, the average sunshine in May is 9.5h.UV index
In Riihimäki, the average daily maximum UV index in May is 4. A UV Index reading of 3 to 5 represents a moderate threat to health from exposure to the Sun's UV radiation for average individuals.Note: The UV index of 4 in May translates into these instructions:
Take precautions - Protection against sun damage is advised. To avoid the Sun's strongest rays, limit exposure around the mid-day period. Sun-related eye harm can be minimized with proper sunglasses offering UVA and UVB coverage. Be watchful! The reflection of snow can enhance the intensity of the Sun's UV radiation nearly double.
Frequently asked questions
What is the average May temperature in Riihimäki?
What is the least humid month in Riihimäki?
What is the average humidity in May in Riihimäki?
How much does it rain in Riihimäki in May?
What is the last month it snows in Riihimäki?
What is the average length of the day in May in Riihimäki?
When is the sunrise / sunset in May in Riihimäki?
How long on average sun shines in May in Riihimäki?
How high is the UV index in May in Riihimäki?
Average temperature in May
Riihimäki, Finland
- Average high temperature in May: 15.7°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 May: 6°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 May
Riihimäki, Finland
- Average pressure in May: 1014.9mbar
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 May
Riihimäki, Finland
- Average wind speed in May: 10km/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 May
Riihimäki, Finland
- Average humidity in May: 67%
The month with the highest relative humidity is February (95%).
The month with the lowest relative humidity is May (67%).
Average rainfall in May
Riihimäki, Finland
- Average rainfall in May: 29mm
The wettest month (with the highest rainfall) is December (44mm).
The driest month (with the least rainfall) is August (18mm).
Average rainfall days in May
Riihimäki, Finland
- Average rainfall days in May: 10.8 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 May
Riihimäki, Finland
- Average snowfall in May: 27mm
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 May
Riihimäki, Finland
- Average snowfall days in May: 0.9 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 May /
Average sunshine in May
Riihimäki, Finland
- Average daylight in May: 17h and 2min
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 May: 9h and 3min
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 May
Riihimäki, Finland
- Average sunshine days in May: 18.5 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 May
Riihimäki, Finland
- Average UV index in May: 4
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 May
Riihimäki, Finland
- Average cloud cover in May: 44
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 May
Riihimäki, Finland
- Average visibility in May: 9km
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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