May weather forecastHämeenlinna, Finland
May
Weather in May
May introduces Hämeenlinna to the heart of spring. The city experiences a noticeable rise in temperatures, sunlight, and a surge in atmospheric pressure. The rather mild landscape is then permeated with a youthful fragrance, characteristic to the spring season. Rainfall increases to 33mm (1.3"), nourishing the thirsty land and sparking a proliferation of greenery. Strikingly, instances of snow are practically non-existent, paving the way for verdant landscapes and vibrant hues of blooming flowers. However, the humidity levels also peak, indicating the approaching summers.Temperature
In May, the meteorological conditions in Hämeenlinna markedly change with the average high-temperature ascending from a frosty 7.5°C (45.5°F) in April to a moderate 15.7°C (60.3°F). Hämeenlinna observes an average nighttime low-temperature of 5.8°C (42.4°F) during the month of May.Humidity
With an average relative humidity of 66%, May is the least humid month.Rainfall
In Hämeenlinna, Finland, during May, the rain falls for 13 days and regularly aggregates up to 33mm (1.3") of precipitation. Throughout the year, there are 129.3 rainfall days, and 403mm (15.87") of precipitation is accumulated.Snowfall
Months with snowfall in Hämeenlinna are January through May, October through December. May is the last month it regularly snows in Hämeenlinna. During 0.7 snowfall days, in May, Hämeenlinna aggregates 18mm (0.71") of snow. Throughout the year, in Hämeenlinna, there are 90.6 snowfall days, and 766mm (30.16") of snow is accumulated.Daylight
In May, the average length of the day is 17h and 27min.On the first day of the month, sunrise is at 05:12 and sunset at 21:25. On the last day of May, sunrise is at 04:01 and sunset at 22:38 EEST.
Sunshine
The average sunshine in May is 9.2h.UV index
In May, the average daily maximum UV index is 4. A UV Index reading of 3 to 5 represents a moderate threat to health from unprotected exposure to Sun's UV rays for the average person.Note: The maximum UV index of 4 during May translates into these guidelines:
Prioritize safety - Suggestions to prevent sun damage are offered. The Sun's harshest UV rays are around midday; it's wise to seek shade and limit time outdoors. For excellent sun protection for the eyes, ears, face, and neck, consider a wide-brim hat. Take precaution! The reflection from snow can almost double the UV radiation of the Sun.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in May
Hämeenlinna, Finland
- Average high temperature in May: 15.7°C
The warmest month (with the highest average high temperature) is July (21.8°C).
The month with the lowest average high temperature is January (-4.4°C).
- Average low temperature in May: 5.8°C
The month with the highest average low temperature is July (12.1°C).
The coldest month (with the lowest average low temperature) is January (-8.5°C).
Average pressure in May
Hämeenlinna, Finland
- Average pressure in May: 1014.8mbar
The month with the highest atmospheric pressure is May (1014.8mbar).
The month with the lowest atmospheric pressure is December (1008mbar).
Average wind speed in May
Hämeenlinna, Finland
- Average wind speed in May: 10.5km/h
The windiest month (with the highest average wind speed) is December (12km/h).
The calmest month (with the lowest average wind speed) is August (9.6km/h).
Average humidity in May
Hämeenlinna, Finland
- Average humidity in May: 66%
The month with the highest relative humidity is February (95%).
The month with the lowest relative humidity is May (66%).
Average rainfall in May
Hämeenlinna, Finland
- Average rainfall in May: 33mm
The wettest month (with the highest rainfall) is July (54mm).
The driest months (with the least rainfall) are March and April (25mm).
Average rainfall days in May
Hämeenlinna, Finland
- Average rainfall days in May: 13 days
The month with the highest number of rainy days is July (18.1 days).
The month with the least rainy days is February (3.3 days).
Average snowfall in May
Hämeenlinna, Finland
- Average snowfall in May: 18mm
The month with the highest snowfall is January (157mm).
The months with the least snowfall are June, July, August and September (0mm).
Average snowfall days in May
Hämeenlinna, Finland
- Average snowfall days in May: 0.7 days
The month with the highest number of snowfall days is January (18.6 days).
The months with the least snowfall days are June, July and August (0 days).
Average daylight in May /
Average sunshine in May
Hämeenlinna, Finland
- Average daylight in May: 17h and 30min
The month with the longest days is June (Average daylight: 19h and 6min).
The month with the shortest days is December (Average daylight: 5h and 42min).
- Average sunshine in May: 9h and 12min
The month with the most sunshine is June (Average sunshine: 11h and 12min).
The month with the least sunshine is December (Average sunshine: 1h and 24min).
Average sunshine days in May
Hämeenlinna, Finland
- Average sunshine days in May: 15.9 days
The month with the most sunshine days is May (15.9 days).
The month with the least sunshine days is March (9.4 days).
Average UV index in May
Hämeenlinna, Finland
- Average UV index in May: 4
The month with the highest UV index is 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
Hämeenlinna, Finland
- Average cloud cover in May: 47
The months with the most cloud cover are January and February (Cloud cover 80).
The months with the least cloud cover are May, June, July and August (Cloud cover 47).
Average visibility in May
Hämeenlinna, 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).
