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
A minor adjustment in Merthyr Mawr's average high-temperature is noted with the start of May, touching a refreshing 14.6°C (58.3°F) from April's 12.3°C (54.1°F). An average minimum temperature of 8.3°C (46.9°F) marks the month of May in Merthyr Mawr.Humidity
The months with the lowest humidity in Merthyr Mawr are April and May, with an average relative humidity of 81%.Rainfall
In Merthyr Mawr, United Kingdom, during May, the rain falls for 15.3 days and regularly aggregates up to 35mm (1.38") of precipitation. In Merthyr Mawr, during the entire year, the rain falls for 197.2 days and collects up to 669mm (26.34") of precipitation.Snowfall
In Merthyr Mawr, snow does not fall in April through November.Daylight
In Merthyr Mawr, the average length of the day in May is 15h and 38min.On the first day of May, sunrise is at 5:44 am and sunset at 8:38 pm. On the last day of the month, sunrise is at 5:03 am and sunset at 9:21 pm BST.
Sunshine
The month with the most sunshine in Merthyr Mawr is May, with an average of 8h of sunshine.UV index
May through September, with an average maximum UV index of 4, are months with the highest UV index. A UV Index of 3 to 5 symbolizes a medium health hazard from exposure to the Sun's UV radiation for ordinary individuals.Note: A typical high UV index of 4 in May suggests the following recommendations:
Heed the precautions - Suggestions to avoid sunburn are made. Minimize direct exposure to the Sun during midday when its radiation is at its peak. On days when the sun blazes, arm yourself with sunglasses that block UVA and UVB radiation.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are May temperatures in Merthyr Mawr?
What is the least humid month in Merthyr Mawr?
What is the average humidity in May in Merthyr Mawr?
How many days does it rain in May in Merthyr Mawr?
When it does not snow in Merthyr Mawr?
How many hours of daylight does Merthyr Mawr have in May?
What time are sunrise and sunset in May in Merthyr Mawr?
What month has the most sunshine in Merthyr Mawr?
How long on average sun shines in May in Merthyr Mawr?
When is the highest UV index in Merthyr Mawr?
How high is the UV index in May in Merthyr Mawr?
Average temperature in May
Merthyr Mawr, United Kingdom
- Average high temperature in May: 14.6°C
The warmest month (with the highest average high temperature) is July (18.8°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 (13.2°C).
The coldest month (with the lowest average low temperature) is February (4°C).
Average pressure in May
Merthyr Mawr, 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 (1009.9mbar).
Average wind speed in May
Merthyr Mawr, United Kingdom
- Average wind speed in May: 16.4km/h
The windiest month (with the highest average wind speed) is December (23.1km/h).
The calmest month (with the lowest average wind speed) is June (15.5km/h).
Average humidity in May
Merthyr Mawr, United Kingdom
- Average humidity in May: 81%
The month with the highest relative humidity is December (86%).
The months with the lowest relative humidity are April and May (81%).
Average rainfall in May
Merthyr Mawr, United Kingdom
- Average rainfall in May: 35mm
The wettest month (with the highest rainfall) is November (79mm).
The driest month (with the least rainfall) is April (32mm).
Average rainfall days in May
Merthyr Mawr, United Kingdom
- Average rainfall days in May: 15.3 days
The month with the highest number of rainy days is November (19.1 days).
The month with the least rainy days is February (13.9 days).
Average snowfall in May
Merthyr Mawr, United Kingdom
- Average snowfall in May: 0mm
The month with the highest snowfall is December (9mm).
The months with the least snowfall are April, May, June, July, August, September, October and November (0mm).
Average snowfall days in May
Merthyr Mawr, United Kingdom
- Average snowfall days in May: 0 days
The month with the highest number of snowfall days is February (1.3 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
Merthyr Mawr, 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 0min
The month with the most sunshine is May (Average sunshine: 8h and 0min).
The month with the least sunshine is January (Average sunshine: 3h and 36min).
Average sunshine days in May
Merthyr Mawr, United Kingdom
- Average sunshine days in May: 13.5 days
The month with the most sunshine days is May (13.5 days).
The month with the least sunshine days is November (9 days).
Average UV index in May
Merthyr Mawr, 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
Merthyr Mawr, United Kingdom
- Average cloud cover in May: 49
The month with the most cloud cover is November (Cloud cover 64).
The month with the least cloud cover is April (Cloud cover 48).
Average visibility in May
Merthyr Mawr, 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).
