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
Merthyr Cynog registers an average high-temperature of a mild 14°C (57.2°F) with the arrival of May, showing minor deviation from the preceding month. The month of May records an average low-temperature of 5.8°C (42.4°F) in Merthyr Cynog, United Kingdom.Humidity
April and May, with an average relative humidity of 85%, are the least humid months.Rainfall
In Merthyr Cynog, during May, the rain falls for 12.9 days and regularly aggregates up to 17mm (0.67") of precipitation. In Merthyr Cynog, United Kingdom, during the entire year, the rain falls for 147.5 days and collects up to 288mm (11.34") of precipitation.Snowfall
May through October are months without snowfall in Merthyr Cynog.Daylight
In Merthyr Cynog, the average length of the day in May is 15h and 43min.On the first day of May, sunrise is at 5:42 am and sunset at 8:39 pm. On the last day of the month, sunrise is at 4:59 am and sunset at 9:23 pm BST.
Sunshine
The month with the most sunshine is May, with an average of 6.3h of sunshine.UV index
May through August, with an average maximum UV index of 4, are months with the highest UV index in Merthyr Cynog. A UV Index reading of 3 to 5 represents a moderate threat to health from exposure to the Sun's UV radiation for the ordinary person.Note: The daily maximum UV index of 4 in May interprets into the following advice:
Preventative actions are necessary - The mandate to avoid skin and eye damage is in place. It's crucial to reduce time in the direct Sun around mid-day due to the intense solar radiation. Select sunglasses that boast both UVA and UVB protection to limit the adverse effects of the sun on the eyes. 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
What are the temperatures in Merthyr Cynog in May?
What are the least humid months in Merthyr Cynog?
What is the average humidity in May in Merthyr Cynog?
How much does it rain in Merthyr Cynog in May?
When it does not snow in Merthyr Cynog?
Does it snow in Merthyr Cynog in May?
What is the average length of the day in May in Merthyr Cynog?
When are sunrise and sunset in May in Merthyr Cynog?
What month has the most sunshine in Merthyr Cynog?
How long on average sun shines in May in Merthyr Cynog?
What is the month with the highest UV index in Merthyr Cynog?
What is the UV index reading in May in Merthyr Cynog?
Average temperature in May
Merthyr Cynog, United Kingdom
- Average high temperature in May: 14°C
The warmest month (with the highest average high temperature) is July (17.6°C).
The month with the lowest average high temperature is January (5.5°C).
- Average low temperature in May: 5.8°C
The month with the highest average low temperature is August (10.3°C).
The coldest month (with the lowest average low temperature) is January (1.1°C).
Average pressure in May
Merthyr Cynog, United Kingdom
- Average pressure in May: 1016.5mbar
The month with the highest atmospheric pressure is May (1016.5mbar).
The month with the lowest atmospheric pressure is November (1009.6mbar).
Average wind speed in May
Merthyr Cynog, United Kingdom
- Average wind speed in May: 14.1km/h
The windiest month (with the highest average wind speed) is February (19km/h).
The calmest months (with the lowest average wind speed) are June and July (12.9km/h).
Average humidity in May
Merthyr Cynog, United Kingdom
- Average humidity in May: 85%
The months with the highest relative humidity are January, November and December (92%).
The months with the lowest relative humidity are April and May (85%).
Average rainfall in May
Merthyr Cynog, United Kingdom
- Average rainfall in May: 17mm
The wettest month (with the highest rainfall) is June (37mm).
The driest month (with the least rainfall) is September (13mm).
Average rainfall days in May
Merthyr Cynog, United Kingdom
- Average rainfall days in May: 12.9 days
The month with the highest number of rainy days is July (15.4 days).
The months with the least rainy days are February and September (9.4 days).
Average snowfall in May
Merthyr Cynog, United Kingdom
- Average snowfall in May: 0mm
The month with the highest snowfall is November (21mm).
The months with the least snowfall are May, June, July, August, September and October (0mm).
Average snowfall days in May
Merthyr Cynog, United Kingdom
- Average snowfall days in May: 0.1 days
The month with the highest number of snowfall days is February (4.8 days).
The months with the least snowfall days are June, July, August, September and October (0 days).
Average daylight in May /
Average sunshine in May
Merthyr Cynog, United Kingdom
- Average daylight in May: 15h and 4min
The month with the longest days is June (Average daylight: 16h and 42min).
The month with the shortest days is December (Average daylight: 7h and 48min).
- Average sunshine in May: 6h and 2min
The month with the most sunshine is May (Average sunshine: 6h and 18min).
The month with the least sunshine is November (Average sunshine: 2h and 54min).
Average sunshine days in May
Merthyr Cynog, United Kingdom
- Average sunshine days in May: 14.3 days
The months with the most sunshine days are March and September (16.2 days).
The month with the least sunshine days is July (10.1 days).
Average UV index in May
Merthyr Cynog, United Kingdom
- Average UV index in May: 4
The months with the highest UV index are May, June, July and August (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
Merthyr Cynog, United Kingdom
- Average cloud cover in May: 60
The month with the most cloud cover is November (Cloud cover 73).
The month with the least cloud cover is April (Cloud cover 59).
Average visibility in May
Merthyr Cynog, United Kingdom
- Average visibility in May: 8km
The months with the highest visibility are January, February, March, April, May, June, July, October, November and December (8km).
The months with the lowest visibility are August and September (7km).
