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
Weather in May
Temperature
With the onset of May, the average high-temperature registers at a still refreshing 16.8°C (62.2°F), subtly different from April's 14.1°C (57.4°F). May witnesses an average nighttime temperature of 8.1°C (46.6°F).Humidity
The average relative humidity in May in Greenwich is 76%.Rainfall
In Greenwich, in May, it is raining for 13.4 days, with typically 21mm (0.83") of accumulated precipitation. In Greenwich, during the entire year, the rain falls for 148.8 days and collects up to 306mm (12.05") of precipitation.Snowfall
May through October are months without snowfall in Greenwich.Daylight
In Greenwich, the average length of the day in May is 15h and 38min.On the first day of May in Greenwich, sunrise is at 5:30 am and sunset at 8:23 pm. On the last day of the month, sunrise is at 4:48 am and sunset at 9:06 pm BST.
Sunshine
In Greenwich, the average sunshine in May is 7.4h.UV index
In May, the average daily maximum UV index is 4. A UV Index estimate of 3 to 5 represents a medium health hazard from unsafe exposure to UV radiation for the ordinary person.Note: The daily maximum UV index of 4 in May interprets into the following advice:
Take precautions. Light skin individuals may get burned in less than 30 minutes. Around midday, solar radiation is most harmful; hence, exposure should be limited. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes.
Frequently asked questions
What is the average May temperature in Greenwich?
What is the average humidity in May in Greenwich?
How many days does it rain in May in Greenwich?
When it does not snow in Greenwich?
Does it snow in Greenwich in May?
How many hours of daylight does Greenwich have in May?
What time are sunrise and sunset in May in Greenwich?
How long on average sun shines in May in Greenwich?
What is the UV index reading in May in Greenwich?
Average temperature in May
Greenwich, United Kingdom
- Average high temperature in May: 16.8°C
The warmest month (with the highest average high temperature) is July (22.3°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 (14.3°C).
The coldest month (with the lowest average low temperature) is January (2.1°C).
Average pressure in May
Greenwich, 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 (1010.6mbar).
Average wind speed in May
Greenwich, United Kingdom
- Average wind speed in May: 13.5km/h
The windiest month (with the highest average wind speed) is February (17.4km/h).
The calmest month (with the lowest average wind speed) is September (12.7km/h).
Average humidity in May
Greenwich, United Kingdom
- Average humidity in May: 76%
The month with the highest relative humidity is December (88%).
The month with the lowest relative humidity is August (72%).
Average rainfall in May
Greenwich, United Kingdom
- Average rainfall in May: 21mm
The wettest month (with the highest rainfall) is June (33mm).
The driest month (with the least rainfall) is April (17mm).
Average rainfall days in May
Greenwich, United Kingdom
- Average rainfall days in May: 13.4 days
The month with the highest number of rainy days is July (15.9 days).
The month with the least rainy days is September (9.6 days).
Average snowfall in May
Greenwich, United Kingdom
- Average snowfall in May: 0mm
The month with the highest snowfall is February (17mm).
The months with the least snowfall are May, June, July, August, September and October (0mm).
Average snowfall days in May
Greenwich, United Kingdom
- Average snowfall days in May: 0 days
The month with the highest number of snowfall days is February (3.5 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
Greenwich, 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 2min
The month with the most sunshine is August (Average sunshine: 7h and 54min).
The month with the least sunshine is February (Average sunshine: 3h and 30min).
Average sunshine days in May
Greenwich, United Kingdom
- Average sunshine days in May: 13.7 days
The month with the most sunshine days is September (18 days).
The month with the least sunshine days is July (12.5 days).
Average UV index in May
Greenwich, 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, March, November and December (UV index 2).
Average cloud cover in May
Greenwich, United Kingdom
- Average cloud cover in May: 52
The month with the most cloud cover is February (Cloud cover 62).
The months with the least cloud cover are August and September (Cloud cover 49).
Average visibility in May
Greenwich, 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).
Greenwich, United Kingdom
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