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
Ystradgynlais starts May with an average high-temperature of a mild 14.2°C (57.6°F), a minor shift from April's 12°C (53.6°F). Ystradgynlais records a steady low-temperature average of 8°C (46.4°F) during May.Humidity
The average relative humidity in May in Ystradgynlais is 82%.Rainfall
The month with the least rainfall in Ystradgynlais is May, when the rain falls for 14.1 days and typically collects 31mm (1.22") of precipitation.Snowfall
April through November are months without snowfall in Ystradgynlais.Daylight
In May, the average length of the day in Ystradgynlais is 15h and 40min.On the first day of May in Ystradgynlais, sunrise is at 5:44 am and sunset at 8:39 pm. On the last day of the month, sunrise is at 5:02 am and sunset at 9:23 pm BST.
Sunshine
With an average of 8.1h of sunshine, May has the most sunshine of the year in Ystradgynlais.UV index
The months with the highest UV index are May through September, with an average maximum UV index of 4. A UV Index of 3 to 5 symbolizes a moderate health risk from exposure to the Sun's UV rays for average individuals.Note: The daily high UV index of 4 during May translates into the following recommendations:
Prioritize safety - The need to safeguard skin and eyes from harm is emphasized. To prevent harmful UV exposure, minimize direct contact with the Sun around midday. For a sun-safe wardrobe, go for clothes that are tightly woven and generously sized.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the usual temperature for Ystradgynlais in May?
What is the average humidity in May in Ystradgynlais?
What is the driest month in Ystradgynlais?
How much does it rain in Ystradgynlais in May?
When it does not snow in Ystradgynlais?
How many hours of daylight does Ystradgynlais have in May?
When is the sunrise / sunset in May in Ystradgynlais?
What month has the most sunshine in Ystradgynlais?
How long on average sun shines in May in Ystradgynlais?
When is the highest UV index in Ystradgynlais?
What is the UV index reading in May in Ystradgynlais?
Average temperature in May
Ystradgynlais, United Kingdom
- Average high temperature in May: 14.2°C
The warmest month (with the highest average high temperature) is July (18.2°C).
The months with the lowest average high temperature are January and February (7.3°C).
- Average low temperature in May: 8°C
The month with the highest average low temperature is August (12.9°C).
The coldest month (with the lowest average low temperature) is February (3.8°C).
Average pressure in May
Ystradgynlais, United Kingdom
- Average pressure in May: 1016.7mbar
The months with the highest atmospheric pressure are May and September (1016.7mbar).
The month with the lowest atmospheric pressure is November (1009.8mbar).
Average wind speed in May
Ystradgynlais, United Kingdom
- Average wind speed in May: 15.8km/h
The windiest month (with the highest average wind speed) is December (22.4km/h).
The calmest month (with the lowest average wind speed) is June (14.9km/h).
Average humidity in May
Ystradgynlais, United Kingdom
- Average humidity in May: 82%
The months with the highest relative humidity are January and December (87%).
The month with the lowest relative humidity is April (81%).
Average rainfall in May
Ystradgynlais, United Kingdom
- Average rainfall in May: 31mm
The wettest months (with the highest rainfall) are November and December (66mm).
The driest month (with the least rainfall) is May (31mm).
Average rainfall days in May
Ystradgynlais, United Kingdom
- Average rainfall days in May: 14.1 days
The month with the highest number of rainy days is November (17 days).
The month with the least rainy days is September (12.6 days).
Average snowfall in May
Ystradgynlais, United Kingdom
- Average snowfall in May: 0mm
The month with the highest snowfall is January (12mm).
The months with the least snowfall are April, May, June, July, August, September, October and November (0mm).
Average snowfall days in May
Ystradgynlais, United Kingdom
- Average snowfall days in May: 0 days
The month with the highest number of snowfall days is January (2 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).
Average daylight in May /
Average sunshine in May
Ystradgynlais, 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 6min).
The month with the least sunshine is January (Average sunshine: 3h and 42min).
Average sunshine days in May
Ystradgynlais, United Kingdom
- Average sunshine days in May: 14 days
The month with the most sunshine days is September (14.4 days).
The month with the least sunshine days is July (10.3 days).
Average UV index in May
Ystradgynlais, 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, November and December (UV index 2).
Average cloud cover in May
Ystradgynlais, United Kingdom
- Average cloud cover in May: 47
The month with the most cloud cover is December (Cloud cover 63).
The months with the least cloud cover are April and May (Cloud cover 47).
Average visibility in May
Ystradgynlais, United Kingdom
- Average visibility in May: 9km
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (9km).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (9km).
