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
May
Weather in May
Temperature
The average high-temperature during May registers at a mild 14.7°C (58.5°F), maintaining a close resemblance to the previous month. An average low-temperature of 8.3°C (46.9°F) is observed during May nights.Humidity
The months with the lowest humidity are April and May, with an average relative humidity of 81%.Rainfall
In Roath, in May, it is raining for 10.3 days, with typically 15mm (0.59") of accumulated precipitation. In Roath, during the entire year, the rain falls for 132.6 days and collects up to 252mm (9.92") of precipitation.Snowfall
March through October are months without snowfall.Daylight
In May, the average length of the day is 15h and 38min.On the first day of the month, sunrise is at 5:43 am and sunset at 8:36 pm. On the last day of May, in Roath, sunrise is at 5:01 am and sunset at 9:19 pm BST.
Sunshine
The month with the most sunshine is May, with an average of 8.2h of sunshine.UV index
The months with the highest UV index are May through September, with an average maximum UV index of 4. A UV Index reading of 3 to 5 represents a moderate threat to health from unsafe exposure to UV radiation for the average person.Note: The maximum UV index of 4 during May leads to these instructions:
Undertake protective steps - Preventing sun damage is advised. Direct exposure to the Sun's intense radiation around midday should be avoided for health reasons. In the presence of strong sunlight, it's crucial to wear sunglasses that ward off UVA and UVB rays.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are the temperatures in May?
What is the least humid month?
What is the average humidity in May?
How many days does it rain in May?
When it does not snow?
What is the average length of the day in May?
When is the sunrise / sunset in May?
What month has the most sunshine?
How long on average sun shines in May?
What are the months with the highest UV index?
What is the UV index reading in May?
Average temperature in May
Roath, United Kingdom
- Average high temperature in May: 14.7°C
The warmest month (with the highest average high temperature) is July (19°C).
The month with the lowest average high temperature is January (7.5°C).
- Average low temperature in May: 8.3°C
The month with the highest average low temperature is August (13.3°C).
The coldest month (with the lowest average low temperature) is February (3.9°C).
Average pressure in May
Roath, United Kingdom
- Average pressure in May: 1016.7mbar
The month with the highest atmospheric pressure is September (1016.8mbar).
The month with the lowest atmospheric pressure is November (1010mbar).
Average wind speed in May
Roath, United Kingdom
- Average wind speed in May: 15.9km/h
The windiest month (with the highest average wind speed) is February (22.3km/h).
The calmest months (with the lowest average wind speed) are June and July (15.2km/h).
Average humidity in May
Roath, United Kingdom
- Average humidity in May: 81%
The months with the highest relative humidity are November and December (86%).
The months with the lowest relative humidity are April and May (81%).
Average rainfall in May
Roath, United Kingdom
- Average rainfall in May: 15mm
The wettest months (with the highest rainfall) are August and November (31mm).
The driest month (with the least rainfall) is April (12mm).
Average rainfall days in May
Roath, United Kingdom
- Average rainfall days in May: 10.3 days
The month with the highest number of rainy days is November (13.5 days).
The months with the least rainy days are February and April (9.1 days).
Average snowfall in May
Roath, United Kingdom
- Average snowfall in May: 0mm
The month with the highest snowfall is February (5mm).
The months with the least snowfall are March, April, May, June, July, August, September and October (0mm).
Average snowfall days in May
Roath, United Kingdom
- Average snowfall days in May: 0 days
The month with the highest number of snowfall days is February (1 days).
The months with the least snowfall days are April, May, June, July, August, September and October (0 days).
Average daylight in May /
Average sunshine in May
Roath, United Kingdom
- Average daylight in May: 15h and 4min
The month with the longest days is June (Average daylight: 16h and 36min).
The month with the shortest days is December (Average daylight: 7h and 54min).
- Average sunshine in May: 8h and 1min
The month with the most sunshine is May (Average sunshine: 8h and 12min).
The month with the least sunshine is November (Average sunshine: 3h and 54min).
Average sunshine days in May
Roath, United Kingdom
- Average sunshine days in May: 18.4 days
The month with the most sunshine days is April (19.2 days).
The month with the least sunshine days is November (13.7 days).
Average UV index in May
Roath, United Kingdom
- Average UV index in May: 4
The months with the highest UV index are May, June, July, August and September (UV index 4).
The months with the lowest UV index are January, February, March, November and December (UV index 2).
Average cloud cover in May
Roath, United Kingdom
- Average cloud cover in May: 46
The month with the most cloud cover is November (Cloud cover 61).
The months with the least cloud cover are April and May (Cloud cover 46).
Average visibility in May
Roath, United Kingdom
- Average visibility in May: 9km
The months with the highest visibility are February, March and December (10km).
The months with the lowest visibility are January, April, May, June, July, August, September, October and November (9km).
