May weather forecastIserlohn, Germany
May
Weather in May
The last month of the spring, May, is a comfortable month in Iserlohn, Germany, with an average temperature ranging between max 17.1°C (62.8°F) and min 7.4°C (45.3°F).Temperature
The onset of May notes an average high-temperature of an enjoyable 17.1°C (62.8°F), subtly shifted from April's 14.3°C (57.7°F). Throughout the month of May, Iserlohn witnesses an average temperature of 7.4°C (45.3°F).Humidity
The average relative humidity in May is 77%.Rainfall
In May, in Iserlohn, the rain falls for 18.4 days. Throughout May, 46mm (1.81") of precipitation is accumulated. Throughout the year, there are 190.8 rainfall days, and 597mm (23.5") of precipitation is accumulated.Snowfall
January through May, October through December are months with snowfall in Iserlohn. May is the last month it regularly snows. During 0.1 snowfall days, in May, Iserlohn aggregates 4mm (0.16") of snow. In Iserlohn, during the entire year, snow falls for 37.4 days and aggregates up to 381mm (15") of snow.Daylight
In May, the average length of the day is 15h and 37min.On the first day of May, sunrise is at 06:00 and sunset at 20:52. On the last day of the month, sunrise is at 05:18 and sunset at 21:35 CEST.
Sunshine
The average sunshine in May in Iserlohn is 8.6h.UV index
The average daily maximum UV index in May in Iserlohn is 4. A UV Index of 3 to 5 symbolizes a moderate threat to health from exposure to the Sun's UV radiation for the ordinary person.Note: The average daily UV index of 4 in May transforms into the following instructions:
Preventative actions are necessary - Suggestions to safeguard against sun damage are in order. Limiting sun exposure during midday hours helps in reducing the harmful effects of UV radiation. Prioritize a wide-brim hat for comprehensive sun defense for your face, neck, eyes, and ears. Be on the lookout! Nearly twofold UV radiation from the Sun can be reflected by snow.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in May
Iserlohn, Germany
- Average high temperature in May: 17.1°C
The warmest months (with the highest average high temperature) are July and August (22.7°C).
The month with the lowest average high temperature is January (3.5°C).
- Average low temperature in May: 7.4°C
The month with the highest average low temperature is August (13.5°C).
The coldest month (with the lowest average low temperature) is January (-0.5°C).
Average pressure in May
Iserlohn, Germany
- Average pressure in May: 1016.2mbar
The month with the highest atmospheric pressure is September (1017.6mbar).
The month with the lowest atmospheric pressure is November (1013.3mbar).
Average wind speed in May
Iserlohn, Germany
- Average wind speed in May: 10.6km/h
The windiest month (with the highest average wind speed) is December (14.7km/h).
The calmest month (with the lowest average wind speed) is August (9.7km/h).
Average humidity in May
Iserlohn, Germany
- Average humidity in May: 77%
The months with the highest relative humidity are January and December (89%).
The month with the lowest relative humidity is August (74%).
Average rainfall in May
Iserlohn, Germany
- Average rainfall in May: 46mm
The wettest month (with the highest rainfall) is December (76mm).
The driest months (with the least rainfall) are April and September (32mm).
Average rainfall days in May
Iserlohn, Germany
- Average rainfall days in May: 18.4 days
The month with the highest number of rainy days is July (18.7 days).
The month with the least rainy days is September (13.2 days).
Average snowfall in May
Iserlohn, Germany
- Average snowfall in May: 4mm
The month with the highest snowfall is January (116mm).
The months with the least snowfall are June, July, August and September (0mm).
Average snowfall days in May
Iserlohn, Germany
- Average snowfall days in May: 0.1 days
The month with the highest number of snowfall days is January (11.1 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in May /
Average sunshine in May
Iserlohn, Germany
- Average daylight in May: 15h and 36min
The month with the longest days is June (Average daylight: 16h and 30min).
The month with the shortest days is December (Average daylight: 7h and 54min).
- Average sunshine in May: 8h and 36min
The month with the most sunshine is August (Average sunshine: 9h and 42min).
The month with the least sunshine is December (Average sunshine: 3h and 30min).
Average sunshine days in May
Iserlohn, Germany
- Average sunshine days in May: 9.5 days
The month with the most sunshine days is September (13.7 days).
The month with the least sunshine days is December (6.6 days).
Average UV index in May
Iserlohn, Germany
- 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, November and December (UV index 2).
Average cloud cover in May
Iserlohn, Germany
- Average cloud cover in May: 46
The month with the most cloud cover is December (Cloud cover 67).
The month with the least cloud cover is August (Cloud cover 38).
Average visibility in May
Iserlohn, Germany
- Average visibility in May: 9km
The months with the highest visibility are April, May, June, July and August (9km).
The months with the lowest visibility are January, February, March, September, October, November and December (8km).








