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
Watford marks the onset of May with an average high-temperature of a still refreshing 16.1°C (61°F), a subtle shift from April's 13.8°C (56.8°F). Throughout the month of May, Watford observes an average nighttime temperature of 7.3°C (45.1°F).Humidity
In May, the average relative humidity in Watford is 80%.Rainfall
In May, in Watford, the rain falls for 12.6 days. Throughout May, 15mm (0.59") of precipitation is accumulated. Throughout the year, in Watford, United Kingdom, there are 140.9 rainfall days, and 239mm (9.41") of precipitation is accumulated.Snowfall
April through November are months without snowfall.Daylight
In Watford, United Kingdom, the average length of the day in May is 15h and 40min.On the first day of the month, sunrise is at 5:31 am and sunset at 8:25 pm. On the last day of May, in Watford, United Kingdom, sunrise is at 4:49 am and sunset at 9:09 pm BST.
Sunshine
The average sunshine in May in Watford is 7.5h.UV index
The average daily maximum UV index in May is 4. A UV Index reading of 3 to 5 represents a moderate health risk from exposure to the Sun's UV rays for the average person.Note: In May, the maximum UV index of 4 suggests this advice:
Exercise prevention - Precautions against solar damage are endorsed. To guard against the harmful effects of the Sun, minimize exposure during midday. Experience reduced UV exposure by about half when donning a wide-brim hat.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are May temperatures in Watford?
What is the average humidity in May in Watford?
How many days does it rain in May in Watford?
When it does not snow in Watford?
How many hours of daylight does Watford have in May?
What time are sunrise and sunset in May in Watford?
How long on average sun shines in May in Watford?
How high is the UV index in May in Watford?
Average temperature in May
Watford, United Kingdom
- Average high temperature in May: 16.1°C
The warmest month (with the highest average high temperature) is July (21.6°C).
The month with the lowest average high temperature is January (6.4°C).
- Average low temperature in May: 7.3°C
The month with the highest average low temperature is August (13.1°C).
The coldest month (with the lowest average low temperature) is January (1.6°C).
Average pressure in May
Watford, 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 (1010.4mbar).
Average wind speed in May
Watford, United Kingdom
- Average wind speed in May: 13.6km/h
The windiest month (with the highest average wind speed) is February (18.1km/h).
The calmest month (with the lowest average wind speed) is July (12.8km/h).
Average humidity in May
Watford, United Kingdom
- Average humidity in May: 80%
The month with the highest relative humidity is December (90%).
The months with the lowest relative humidity are July and August (77%).
Average rainfall in May
Watford, United Kingdom
- Average rainfall in May: 15mm
The wettest month (with the highest rainfall) is June (31mm).
The driest month (with the least rainfall) is April (13mm).
Average rainfall days in May
Watford, United Kingdom
- Average rainfall days in May: 12.6 days
The month with the highest number of rainy days is July (14.2 days).
The months with the least rainy days are February and September (9.3 days).
Average snowfall in May
Watford, United Kingdom
- Average snowfall in May: 0mm
The month with the highest snowfall is February (12mm).
The months with the least snowfall are April, May, June, July, August, September, October and November (0mm).
Average snowfall days in May
Watford, United Kingdom
- Average snowfall days in May: 0 days
The month with the highest number of snowfall days is February (2.3 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
Watford, 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: 7h and 3min
The month with the most sunshine is July (Average sunshine: 8h and 0min).
The month with the least sunshine is February (Average sunshine: 3h and 48min).
Average sunshine days in May
Watford, United Kingdom
- Average sunshine days in May: 13.3 days
The month with the most sunshine days is September (17.4 days).
The month with the least sunshine days is August (12.7 days).
Average UV index in May
Watford, United Kingdom
- Average UV index in May: 4
The month with the highest UV index is July (UV index 5).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover in May
Watford, United Kingdom
- Average cloud cover in May: 51
The month with the most cloud cover is November (Cloud cover 61).
The months with the least cloud cover are April and September (Cloud cover 49).
Average visibility in May
Watford, United Kingdom
- Average visibility in May: 9km
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October and December (9km).
The month with the lowest visibility is November (8km).
