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 reports an average high-temperature of a refreshing 13.2°C (55.8°F), slightly varied from April's 11°C (51.8°F). In the month of May, Greencastle's average low-temperature falls to a chilly 6.3°C (43.3°F).Humidity
In May, the average relative humidity is 84%.Rainfall
In Greencastle, in May, it is raining for 17.3 days, with typically 36mm (1.42") of accumulated precipitation. In Greencastle, during the entire year, the rain falls for 216.1 days and collects up to 529mm (20.83") of precipitation.Snowfall
In Greencastle, snow does not fall in April through October.Daylight
In May, the average length of the day is 16h and 13min.On the first day of the month, sunrise is at 5:45 am and sunset at 9:04 pm. On the last day of May, in Greencastle, sunrise is at 4:55 am and sunset at 9:56 pm IST.
Sunshine
In Greencastle, the average sunshine in May is 6.1h.UV index
May and June, 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 health risk from exposure to the Sun's UV rays for the average person.Note: A maximum high UV index of 4 in May translates into the following recommendations:
Heed the precautions - It is counselled to guard against solar damage. Solar radiation is at its peak intensity during midday, so it's advisable to stay indoors or in the shade. Employ a wide-brim hat for potent defense against up to 50% of UV rays.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the average May temperature in Greencastle?
What is the average humidity in May in Greencastle?
How many days does it rain in May in Greencastle?
When it does not snow in Greencastle?
What is the average length of the day in May in Greencastle?
When is the sunrise / sunset in May in Greencastle?
How long on average sun shines in May in Greencastle?
When is the highest UV index in Greencastle?
What is the UV index intensity in May in Greencastle?
Average temperature in May
Greencastle, Ireland
- Average high temperature in May: 13.2°C
The warmest month (with the highest average high temperature) is July (16.5°C).
The month with the lowest average high temperature is January (6.3°C).
- Average low temperature in May: 6.3°C
The month with the highest average low temperature is August (10.4°C).
The coldest month (with the lowest average low temperature) is February (2.3°C).
Average pressure in May
Greencastle, Ireland
- Average pressure in May: 1015.2mbar
The month with the highest atmospheric pressure is May (1015.2mbar).
The month with the lowest atmospheric pressure is November (1006.6mbar).
Average wind speed in May
Greencastle, Ireland
- Average wind speed in May: 16.4km/h
The windiest month (with the highest average wind speed) is January (21.9km/h).
The calmest month (with the lowest average wind speed) is July (13.8km/h).
Average humidity in May
Greencastle, Ireland
- Average humidity in May: 84%
The months with the highest relative humidity are January, August and December (88%).
The month with the lowest relative humidity is April (82%).
Average rainfall in May
Greencastle, Ireland
- Average rainfall in May: 36mm
The wettest month (with the highest rainfall) is August (60mm).
The driest month (with the least rainfall) is September (29mm).
Average rainfall days in May
Greencastle, Ireland
- Average rainfall days in May: 17.3 days
The month with the highest number of rainy days is August (21.5 days).
The month with the least rainy days is April (15.7 days).
Average snowfall in May
Greencastle, Ireland
- Average snowfall in May: 0mm
The months with the highest snowfall are January and February (21mm).
The months with the least snowfall are April, May, June, July, August, September and October (0mm).
Average snowfall days in May
Greencastle, Ireland
- Average snowfall days in May: 0 days
The month with the highest number of snowfall days is February (2.7 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
Greencastle, Ireland
- Average daylight in May: 16h and 1min
The month with the longest days is June (Average daylight: 17h and 18min).
The month with the shortest days is December (Average daylight: 7h and 12min).
- Average sunshine in May: 6h and 1min
The month with the most sunshine is June (Average sunshine: 6h and 42min).
The month with the least sunshine is January (Average sunshine: 3h and 24min).
Average sunshine days in May
Greencastle, Ireland
- Average sunshine days in May: 10.6 days
The month with the most sunshine days is April (11.1 days).
The month with the least sunshine days is August (6.3 days).
Average UV index in May
Greencastle, Ireland
- Average UV index in May: 4
The months with the highest UV index are May and June (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
Greencastle, Ireland
- Average cloud cover in May: 60
The month with the most cloud cover is July (Cloud cover 68).
The month with the least cloud cover is April (Cloud cover 58).
Average visibility in May
Greencastle, Ireland
- Average visibility in May: 9km
The months with the highest visibility are January, February, March, April, May, June, August, September, October, November and December (9km).
The month with the lowest visibility is July (8km).
