May weather forecastSumiswald, Switzerland
May
Weather in May
The last month of the spring, May, is a refreshing month in Sumiswald, Switzerland, with an average temperature varying between 5.4°C (41.7°F) and 16.3°C (61.3°F).Temperature
Sumiswald starts May with an average high-temperature of an enjoyable 16.3°C (61.3°F), hinting at a minimal fluctuation from April. Sumiswald registers a consistent average low-temperature of 5.4°C (41.7°F) during May.Humidity
In Sumiswald, the average relative humidity in May is 80%.Rainfall
In Sumiswald, in May, during 20.1 rainfall days, 96mm (3.78") of precipitation is typically accumulated. In Sumiswald, during the entire year, the rain falls for 158.6 days and collects up to 789mm (31.06") of precipitation.Snowfall
Months with snowfall in Sumiswald are January through May, October through December. May is the last month it regularly snows in Sumiswald, Switzerland. During 1.1 snowfall days, in May, Sumiswald aggregates 29mm (1.14") of snow. In Sumiswald, during the entire year, snow falls for 59.1 days and aggregates up to 1284mm (50.55") of snow.Daylight
In May, the average length of the day in Sumiswald is 15h and 5min.On the first day of the month, sunrise is at 06:12 and sunset at 20:39. On the last day of May, in Sumiswald, sunrise is at 05:37 and sunset at 21:15 CEST.
Sunshine
In May, the average sunshine is 9h.UV index
In May, the average daily maximum UV index in Sumiswald is 4. A UV Index of 3 to 5 symbolizes a medium vulnerability from exposure to the Sun's UV rays for ordinary individuals.Note: The maximum UV index of 4 during May leads to these instructions:
Act with care - The need to guard against sun damage is communicated. To prevent harmful UV exposure, minimize direct contact with the Sun around midday. Using UVA and UVB-protective sunglasses and sun-protective clothing is effective against UV radiation. Forewarned is forearmed! The Sun's UV radiation can be almost doubled in intensity by snow reflection.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in May
Sumiswald, Switzerland
- Average high temperature in May: 16.3°C
The warmest month (with the highest average high temperature) is July (22.5°C).
The month with the lowest average high temperature is January (2.3°C).
- Average low temperature in May: 5.4°C
The month with the highest average low temperature is July (11.4°C).
The coldest month (with the lowest average low temperature) is February (-4.3°C).
Average pressure in May
Sumiswald, Switzerland
- Average pressure in May: 1016.2mbar
The month with the highest atmospheric pressure is December (1021mbar).
The month with the lowest atmospheric pressure is April (1015.6mbar).
Average wind speed in May
Sumiswald, Switzerland
- Average wind speed in May: 7.5km/h
The windiest month (with the highest average wind speed) is March (8.6km/h).
The calmest month (with the lowest average wind speed) is August (6.1km/h).
Average humidity in May
Sumiswald, Switzerland
- Average humidity in May: 80%
The months with the highest relative humidity are January and February (87%).
The month with the lowest relative humidity is July (77%).
Average rainfall in May
Sumiswald, Switzerland
- Average rainfall in May: 96mm
The wettest month (with the highest rainfall) is June (99mm).
The driest month (with the least rainfall) is September (37mm).
Average rainfall days in May
Sumiswald, Switzerland
- Average rainfall days in May: 20.1 days
The month with the highest number of rainy days is May (20.1 days).
The month with the least rainy days is February (8.4 days).
Average snowfall in May
Sumiswald, Switzerland
- Average snowfall in May: 29mm
The month with the highest snowfall is January (269mm).
The months with the least snowfall are June, July, August and September (0mm).
Average snowfall days in May
Sumiswald, Switzerland
- Average snowfall days in May: 1.1 days
The month with the highest number of snowfall days is February (12.6 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in May /
Average sunshine in May
Sumiswald, Switzerland
- Average daylight in May: 15h and 6min
The month with the longest days is June (Average daylight: 15h and 48min).
The month with the shortest days is December (Average daylight: 8h and 36min).
- Average sunshine in May: 9h and 0min
The month with the most sunshine is August (Average sunshine: 10h and 18min).
The month with the least sunshine is January (Average sunshine: 5h and 6min).
Average sunshine days in May
Sumiswald, Switzerland
- Average sunshine days in May: 9 days
The month with the most sunshine days is October (17.4 days).
The month with the least sunshine days is June (8.3 days).
Average UV index in May
Sumiswald, Switzerland
- 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, October, November and December (UV index 2).
Average cloud cover in May
Sumiswald, Switzerland
- Average cloud cover in May: 45
The month with the most cloud cover is February (Cloud cover 48).
The month with the least cloud cover is August (Cloud cover 32).
Average visibility in May
Sumiswald, Switzerland
- Average visibility in May: 8km
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (8km).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (8km).





