May weather forecastCathays, United Kingdom
May weather forecast for Cathays, United Kingdom: The last month of the spring, May, is a moderate month in Cathays, United Kingdom, with an average temperature varying between 8.3°C (46.9°F) and 14.7°C (58.5°F). Transitioning into May, Cathays experiences an average high-temperature of a mild 14.7°C (58.5°F), marking a minor shift from the preceding month.
May
Weather in May
The last month of the spring, May, is a moderate month in Cathays, United Kingdom, with an average temperature varying between 8.3°C (46.9°F) and 14.7°C (58.5°F).Temperature
Transitioning into May, Cathays experiences an average high-temperature of a mild 14.7°C (58.5°F), marking a minor shift from the preceding month. Nighttime temperature experiences an average drop to a frosty 8.3°C (46.9°F) in May.Humidity
The months with the lowest humidity are April and May, with an average relative humidity of 81%.Rainfall
In May, the rain falls for 10.3 days. Throughout May, 15mm (0.59") of precipitation is accumulated. Throughout the year, there are 132.6 rainfall days, and 252mm (9.92") of precipitation is accumulated.Snowfall
In Cathays, snow does not fall in March through October.Daylight
The average length of the day in May is 15h and 38min.On the first day of May in Cathays, sunrise is at 5:43 am and sunset at 8:36 pm. On the last day of the month, sunrise is at 5:01 am and sunset at 9:19 pm BST.
Sunshine
May has the most sunshine of the year, with an average of 8.2h 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 reading of 3 to 5 represents a moderate threat to health from exposure to the Sun's UV radiation for average individuals.Note: In May, a regular UV index of 4 translates into these guidelines:
Heed the precautions - Protecting the skin and eyes from damage is compulsory. Midday is when the Sun's radiation is strongest; avoid prolonged exposure during this time. Safeguard your eyes, ears, and face from sun rays with the aid of a wide-brim hat.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in May
Cathays, 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
Cathays, 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
Cathays, 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
Cathays, 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
Cathays, 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
Cathays, 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
Cathays, 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
Cathays, 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
Cathays, United Kingdom
- Average daylight in May: 15h and 36min
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 12min
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
Cathays, 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
Cathays, 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
Cathays, 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
Cathays, 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).





