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 sea temperature 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
The transition into May is marked with an average high-temperature of a still fresh 12.6°C (54.7°F), showing an insignificant shift from April's 10.3°C (50.5°F). A steady low-temperature average of 8.3°C (46.9°F) is logged in Dún Laoghaire during May, reflecting a modest dip from daytime readings.Humidity
The average relative humidity in May is 83%.Rainfall
The month with the least rainfall is May, when the rain falls for 16.1 days and typically collects 27mm (1.06") of precipitation.Snowfall
April through October are months without snowfall.Sea temperature
In Dún Laoghaire, Ireland, in May, the average water temperature is 10.4°C (50.7°F).Note: It is advised against swimming in 10.4°C (50.7°F) when it drops below 10°C (50°F). Such temperatures can cause extreme cold shock, leading to hyperventilation.
Daylight
The average length of the day in May is 15h and 54min.On the first day of May, sunrise is at 5:48 am and sunset at 8:54 pm. On the last day of the month, sunrise is at 5:03 am and sunset at 9:41 pm IST.
Sunshine
The month with the most sunshine in Dún Laoghaire is May, with an average of 8h of sunshine.UV index
The months with the highest UV index are May through September, with an average maximum UV index of 4. A UV Index reading of 3 to 5 represents a moderate threat to health from unsafe exposure to UV radiation for the average person.Note: The maximum UV index of 4 during May translates into these guidelines:
Take precautions - Protection against sun damage is advised. The midday Sun can be harmful due to its potent UV radiation; seek shade and reduce exposure. A wide-brimmed hat is a staple for defending the face, eyes, ears, and neck from the Sun.
Frequently asked questions
What are May temperatures in Dún Laoghaire?
What is the average humidity in May in Dún Laoghaire?
What is the driest month in Dún Laoghaire?
How many days does it rain in May in Dún Laoghaire?
When it does not snow in Dún Laoghaire?
How cold is the water in May in Dún Laoghaire?
How many hours of daylight does Dún Laoghaire have in May?
When is the sunrise / sunset in May in Dún Laoghaire?
What month has the most sunshine in Dún Laoghaire?
How long on average sun shines in May in Dún Laoghaire?
When is the highest UV index in Dún Laoghaire?
How high is the UV index in May in Dún Laoghaire?
Average temperature in May
Dún Laoghaire, Ireland
- Average high temperature in May: 12.6°C
The warmest months (with the highest average high temperature) are July and August (16.9°C).
The months with the lowest average high temperature are January and February (7.8°C).
- Average low temperature in May: 8.3°C
The month with the highest average low temperature is August (12.7°C).
The coldest month (with the lowest average low temperature) is February (4.4°C).
Average pressure in May
Dún Laoghaire, 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
Dún Laoghaire, Ireland
- Average wind speed in May: 18.1km/h
The windiest month (with the highest average wind speed) is December (25.9km/h).
The calmest month (with the lowest average wind speed) is July (15.9km/h).
Average humidity in May
Dún Laoghaire, Ireland
- Average humidity in May: 83%
The month with the highest relative humidity is July (86%).
The month with the lowest relative humidity is March (82%).
Average rainfall in May
Dún Laoghaire, Ireland
- Average rainfall in May: 27mm
The wettest month (with the highest rainfall) is November (71mm).
The driest month (with the least rainfall) is May (27mm).
Average rainfall days in May
Dún Laoghaire, Ireland
- Average rainfall days in May: 16.1 days
The month with the highest number of rainy days is July (20.4 days).
The months with the least rainy days are March and September (14.9 days).
Average snowfall in May
Dún Laoghaire, Ireland
- Average snowfall in May: 0mm
The month with the highest snowfall is December (9mm).
The months with the least snowfall are April, May, June, July, August, September and October (0mm).
Average snowfall days in May
Dún Laoghaire, Ireland
- Average snowfall days in May: 0 days
The months with the highest number of snowfall days are January and February (1.3 days).
The months with the least snowfall days are April, May, June, July, August, September and October (0 days).
Average sea temperature in May
Dún Laoghaire, Ireland
- Average sea temperature in May: 10.4°C
The best month for swimming (with the highest average sea temperature) is August (14.9°C).
The coldest month (with the lowest average sea temperature) is March (8.4°C).
Average daylight in May /
Average sunshine in May
Dún Laoghaire, Ireland
- Average daylight in May: 15h and 5min
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: 8h and 0min
The month with the most sunshine is May (Average sunshine: 8h and 0min).
The month with the least sunshine is November (Average sunshine: 4h and 18min).
Average sunshine days in May
Dún Laoghaire, Ireland
- Average sunshine days in May: 11 days
The month with the most sunshine days is April (11.7 days).
The month with the least sunshine days is July (7.2 days).
Average UV index in May
Dún Laoghaire, Ireland
- Average UV index in May: 4
The months with the highest UV index are May, June, July, August and September (UV index 4).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover in May
Dún Laoghaire, Ireland
- Average cloud cover in May: 49
The months with the most cloud cover are February and November (Cloud cover 56).
The month with the least cloud cover is September (Cloud cover 48).
Average visibility in May
Dún Laoghaire, Ireland
- Average visibility in May: 9km
The months with the highest visibility are January, March, October and November (10km).
The months with the lowest visibility are February, April, May, June, July, August, September and December (9km).
Dún Laoghaire, Ireland
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