May weather forecastTrefriw, United Kingdom
May
Weather in May
The last month of the spring, May, is also a fresh month in Trefriw, United Kingdom, with an average temperature varying between 12.9°C (55.2°F) and 8.1°C (46.6°F).Temperature
May's arrival brings an average high-temperature of a still cool 12.9°C (55.2°F), slightly deviating from April's 10.5°C (50.9°F). Trefriw registers a subtle dip to an average of 8.1°C (46.6°F) during the nights of May.Humidity
April and May, with an average relative humidity of 81%, are the least humid months in Trefriw.Rainfall
The month with the least rainfall in Trefriw is May, when the rain falls for 16.9 days and typically collects 31mm (1.22") of precipitation.Snowfall
In Trefriw, snow does not fall in May through October.Daylight
In Trefriw, the average length of the day in May is 15h and 52min.On the first day of May in Trefriw, sunrise is at 5:40 am and sunset at 8:44 pm. On the last day of the month, sunrise is at 4:55 am and sunset at 9:31 pm BST.
Sunshine
The months with the most sunshine in Trefriw are May and June, with an average of 7.7h 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 value of 3 to 5 symbolizes a moderate health risk from exposure to the Sun's UV radiation for average individuals.Note: The maximum UV index, 4 during May, leads to the following recommendations:
Exercise caution. Those with pale skin may experience burns in less than half an hour. The Sun's UV radiation is especially harmful around midday, so reduce exposure and stay safe. Prioritize a wide-brim hat for comprehensive sun defense for your face, neck, eyes, and ears.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in May
Trefriw, United Kingdom
- Average high temperature in May: 12.9°C
The warmest month (with the highest average high temperature) is July (16.9°C).
The month with the lowest average high temperature is January (6.8°C).
- Average low temperature in May: 8.1°C
The month with the highest average low temperature is August (12.8°C).
The coldest month (with the lowest average low temperature) is January (3.8°C).
Average pressure in May
Trefriw, United Kingdom
- Average pressure in May: 1016.2mbar
The month with the highest atmospheric pressure is May (1016.2mbar).
The month with the lowest atmospheric pressure is November (1008.8mbar).
Average wind speed in May
Trefriw, United Kingdom
- Average wind speed in May: 16.3km/h
The windiest month (with the highest average wind speed) is December (23.8km/h).
The calmest month (with the lowest average wind speed) is June (14.4km/h).
Average humidity in May
Trefriw, United Kingdom
- Average humidity in May: 81%
The months with the highest relative humidity are January and August (85%).
The months with the lowest relative humidity are April and May (81%).
Average rainfall in May
Trefriw, United Kingdom
- Average rainfall in May: 31mm
The wettest month (with the highest rainfall) is November (68mm).
The driest month (with the least rainfall) is May (31mm).
Average rainfall days in May
Trefriw, United Kingdom
- Average rainfall days in May: 16.9 days
The month with the highest number of rainy days is December (22.5 days).
The month with the least rainy days is February (15.8 days).
Average snowfall in May
Trefriw, United Kingdom
- Average snowfall in May: 0mm
The month with the highest snowfall is February (21mm).
The months with the least snowfall are May, June, July, August, September and October (0mm).
Average snowfall days in May
Trefriw, United Kingdom
- Average snowfall days in May: 0 days
The month with the highest number of snowfall days is February (3.3 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
Trefriw, United Kingdom
- Average daylight in May: 15h and 54min
The month with the longest days is June (Average daylight: 16h and 54min).
The month with the shortest days is December (Average daylight: 7h and 36min).
- Average sunshine in May: 7h and 42min
The months with the most sunshine are May and June (Average sunshine: 7h and 42min).
The month with the least sunshine is November (Average sunshine: 3h and 36min).
Average sunshine days in May
Trefriw, United Kingdom
- Average sunshine days in May: 11 days
The months with the most sunshine days are March and May (11 days).
The month with the least sunshine days is November (5.2 days).
Average UV index in May
Trefriw, 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
Trefriw, United Kingdom
- Average cloud cover in May: 49
The month with the most cloud cover is December (Cloud cover 65).
The month with the least cloud cover is May (Cloud cover 49).
Average visibility in May
Trefriw, United Kingdom
- Average visibility in May: 9km
The months with the highest visibility are March, September and October (10km).
The months with the lowest visibility are January, February, April, May, June, July, August, November and December (9km).
