May weather forecastCastleknock, Ireland
May
Weather in May
May, the last month of the spring in Castleknock, is a moderate month, with an average temperature fluctuating between 6.8°C (44.2°F) and 13.5°C (56.3°F).Temperature
As May takes hold, the average high-temperature is a refreshing 13.5°C (56.3°F), nearly mirroring that of the previous month. Castleknock experiences a nighttime temperature average of 6.8°C (44.2°F) during May.Humidity
March through May, with an average relative humidity of 85%, are the least humid months in Castleknock.Rainfall
In May, in Castleknock, the rain falls for 19 days. Throughout May, 34mm (1.34") of precipitation is accumulated. Throughout the year, there are 209.2 rainfall days, and 564mm (22.2") of precipitation is accumulated.Snowfall
In Castleknock, snow does not fall in April through October.Daylight
In May, the average length of the day in Castleknock is 15h and 55min.On the first day of May, sunrise is at 5:49 am and sunset at 8:55 pm. On the last day of the month, sunrise is at 5:03 am and sunset at 9:42 pm IST.
Sunshine
The months with the most sunshine in Castleknock are April and May, with an average of 6.7h of sunshine.UV index
The months with the highest UV index in Castleknock are May, June and August, with an average maximum UV index of 4. A UV Index value of 3 to 5 symbolizes a medium vulnerability from unprotected exposure to Sun's UV rays for ordinary individuals.Note: In May, the maximum UV index of 4 suggests this advice:
Preventative actions are necessary - Recommendations to ward off sunburn are given. Midday is when the Sun's radiation is strongest; avoid prolonged exposure during this time. Opt for tightly woven and loose clothing to enhance protection from the Sun.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in May
Castleknock, Ireland
- Average high temperature in May: 13.5°C
The warmest month (with the highest average high temperature) is July (17.3°C).
The month with the lowest average high temperature is January (7°C).
- Average low temperature in May: 6.8°C
The month with the highest average low temperature is July (11.2°C).
The coldest month (with the lowest average low temperature) is February (2.5°C).
Average pressure in May
Castleknock, Ireland
- Average pressure in May: 1016mbar
The month with the highest atmospheric pressure is May (1016mbar).
The month with the lowest atmospheric pressure is November (1008.3mbar).
Average wind speed in May
Castleknock, Ireland
- Average wind speed in May: 15.5km/h
The windiest month (with the highest average wind speed) is January (21.1km/h).
The calmest months (with the lowest average wind speed) are June and July (13.6km/h).
Average humidity in May
Castleknock, Ireland
- Average humidity in May: 85%
The month with the highest relative humidity is December (90%).
The months with the lowest relative humidity are March, April and May (85%).
Average rainfall in May
Castleknock, Ireland
- Average rainfall in May: 34mm
The wettest month (with the highest rainfall) is August (71mm).
The driest month (with the least rainfall) is April (30mm).
Average rainfall days in May
Castleknock, Ireland
- Average rainfall days in May: 19 days
The month with the highest number of rainy days is August (24.2 days).
The month with the least rainy days is February (13.6 days).
Average snowfall in May
Castleknock, Ireland
- Average snowfall in May: 0mm
The month with the highest snowfall is February (19mm).
The months with the least snowfall are April, May, June, July, August, September and October (0mm).
Average snowfall days in May
Castleknock, Ireland
- Average snowfall days in May: 0 days
The month with the highest number of snowfall days is February (2.4 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
Castleknock, Ireland
- Average daylight in May: 15h and 54min
The month with the longest days is June (Average daylight: 16h and 54min).
The month with the shortest days is December (Average daylight: 7h and 36min).
- Average sunshine in May: 6h and 42min
The months with the most sunshine are April and May (Average sunshine: 6h and 42min).
The months with the least sunshine are February, October and November (Average sunshine: 3h and 54min).
Average sunshine days in May
Castleknock, Ireland
- Average sunshine days in May: 9.5 days
The month with the most sunshine days is January (13.2 days).
The month with the least sunshine days is August (3.4 days).
Average UV index in May
Castleknock, Ireland
- Average UV index in May: 4
The months with the highest UV index are May, June and August (UV index 4).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover in May
Castleknock, Ireland
- Average cloud cover in May: 57
The month with the most cloud cover is July (Cloud cover 64).
The month with the least cloud cover is April (Cloud cover 55).
Average visibility in May
Castleknock, Ireland
- Average visibility in May: 9km
The months with the highest visibility are January, February, March, April, May, June, October, November and December (9km).
The months with the lowest visibility are July, August and September (8km).
