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
May observes an average high-temperature of a still refreshing 16.5°C (61.7°F), marking an insignificant difference from April's 14.2°C (57.6°F). Harrow on the Hill's average low-temperature in the month of May is recorded at a chilly 7.9°C (46.2°F).Humidity
The average relative humidity in May in Harrow on the Hill is 77%.Rainfall
In May, the rain falls for 16.5 days. Throughout May, 28mm (1.1") of precipitation is accumulated. Throughout the year, there are 165.8 rainfall days, and 345mm (13.58") of precipitation is accumulated.Snowfall
April through October are months without snowfall.Daylight
In Harrow on the Hill, the average length of the day in May is 15h and 38min.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 Harrow on the Hill, sunrise is at 4:49 am and sunset at 9:08 pm BST.
Sunshine
The average sunshine in May is 7.5h.UV index
In Harrow on the Hill, the average daily maximum UV index in May is 4. A UV Index of 3 to 5 symbolizes a medium health hazard from unsafe exposure to UV radiation for average individuals.Note: The daily high UV index of 4 in May translates into this advice:
Ensure safety - Imperative it is to shield skin and eyes from damage. Considering the Sun's intensity during midday, it's wise to minimize direct exposure. For minimizing sun-related eye damage, always choose sunglasses with UVA and UVB coverage.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are May temperatures in Harrow on the Hill?
What is the average humidity in May in Harrow on the Hill?
How many days does it rain in May in Harrow on the Hill?
When it does not snow in Harrow on the Hill?
What is the average length of the day in May in Harrow on the Hill?
When is the sunrise / sunset in May in Harrow on the Hill?
How long on average sun shines in May in Harrow on the Hill?
What is the UV index intensity in May in Harrow on the Hill?
Average temperature in May
Harrow on the Hill, United Kingdom
- Average high temperature in May: 16.5°C
The warmest month (with the highest average high temperature) is July (21.8°C).
The month with the lowest average high temperature is January (6.7°C).
- Average low temperature in May: 7.9°C
The month with the highest average low temperature is August (13.7°C).
The coldest month (with the lowest average low temperature) is January (1.9°C).
Average pressure in May
Harrow on the Hill, United Kingdom
- Average pressure in May: 1016.8mbar
The month with the highest atmospheric pressure is September (1016.9mbar).
The month with the lowest atmospheric pressure is November (1010.5mbar).
Average wind speed in May
Harrow on the Hill, United Kingdom
- Average wind speed in May: 13.5km/h
The windiest month (with the highest average wind speed) is February (17.6km/h).
The calmest month (with the lowest average wind speed) is July (12.7km/h).
Average humidity in May
Harrow on the Hill, United Kingdom
- Average humidity in May: 77%
The month with the highest relative humidity is December (89%).
The months with the lowest relative humidity are July and August (74%).
Average rainfall in May
Harrow on the Hill, United Kingdom
- Average rainfall in May: 28mm
The wettest month (with the highest rainfall) is June (46mm).
The driest month (with the least rainfall) is January (19mm).
Average rainfall days in May
Harrow on the Hill, United Kingdom
- Average rainfall days in May: 16.5 days
The month with the highest number of rainy days is July (18.4 days).
The month with the least rainy days is February (10.8 days).
Average snowfall in May
Harrow on the Hill, United Kingdom
- Average snowfall in May: 0mm
The month with the highest snowfall is February (16mm).
The months with the least snowfall are April, May, June, July, August, September and October (0mm).
Average snowfall days in May
Harrow on the Hill, United Kingdom
- Average snowfall days in May: 0 days
The month with the highest number of snowfall days is February (2.1 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
Harrow on the Hill, 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 months with the most sunshine are July and August (Average sunshine: 8h and 0min).
The month with the least sunshine is February (Average sunshine: 3h and 42min).
Average sunshine days in May
Harrow on the Hill, United Kingdom
- Average sunshine days in May: 9.8 days
The month with the most sunshine days is December (16.3 days).
The month with the least sunshine days is July (9.3 days).
Average UV index in May
Harrow on the Hill, United Kingdom
- Average UV index in May: 4
The months with the highest UV index are June and 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
Harrow on the Hill, United Kingdom
- Average cloud cover in May: 51
The month with the most cloud cover is February (Cloud cover 61).
The months with the least cloud cover are April and September (Cloud cover 49).
Average visibility in May
Harrow on the Hill, 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).
