May weather forecastDundrum, United Kingdom
May
Weather in May
May, the last month of the spring in Dundrum, is another cool month, with an average temperature ranging between min 7.8°C (46°F) and max 12.7°C (54.9°F).Temperature
The onset of May marks an average high-temperature of a still cool 12.7°C (54.9°F), hardly differing from April's 10.2°C (50.4°F). Dundrum logs an average low-temperature of 7.8°C (46°F) during the nights of May, subtly lower than its daytime highs.Humidity
The months with the lowest humidity in Dundrum are March through May, with an average relative humidity of 83%.Rainfall
May is the month with the least rainfall. Rain falls for 15.7 days and accumulates 32mm (1.26") of precipitation.Snowfall
April through October are months without snowfall.Sea temperature
In May, the average sea temperature is 10.2°C (50.4°F).Note: Dipping into 10.2°C (50.4°F) below 10°C (50°F) is possible with the right protection; absent that, anticipate cold shock and hampered breathing. Swimming momentarily at 13°C (55.4°F) can be jarring.
Daylight
In May, the average length of the day is 16h and 3min.On the first day of the month, sunrise is at 5:44 am and sunset at 8:56 pm. On the last day of May, in Dundrum, sunrise is at 4:56 am and sunset at 9:45 pm BST.
Sunshine
In May, the average sunshine in Dundrum is 7.3h.UV index
The average daily maximum UV index in May in Dundrum is 3. A UV Index reading of 3 to 5 represents a medium vulnerability from exposure to the Sun's UV radiation for the ordinary person.Note: In May, the maximum UV index of 3 transforms into these recommendations:
Be cautious. Those with fair skin can be subjected to burns in fewer than 30 minutes. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. Stay sun-safe with clothing that is both closely woven and worn loosely.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in May
Dundrum, United Kingdom
- Average high temperature in May: 12.7°C
The warmest months (with the highest average high temperature) are July and August (16.6°C).
The month with the lowest average high temperature is February (7.1°C).
- Average low temperature in May: 7.8°C
The months with the highest average low temperature are July and August (12.1°C).
The coldest month (with the lowest average low temperature) is February (3.9°C).
Average pressure in May
Dundrum, United Kingdom
- Average pressure in May: 1015.7mbar
The month with the highest atmospheric pressure is May (1015.7mbar).
The month with the lowest atmospheric pressure is November (1007.6mbar).
Average wind speed in May
Dundrum, United Kingdom
- Average wind speed in May: 17.4km/h
The windiest month (with the highest average wind speed) is December (24.4km/h).
The calmest month (with the lowest average wind speed) is July (15km/h).
Average humidity in May
Dundrum, United Kingdom
- Average humidity in May: 83%
The month with the highest relative humidity is August (87%).
The months with the lowest relative humidity are March, April and May (83%).
Average rainfall in May
Dundrum, United Kingdom
- Average rainfall in May: 32mm
The wettest month (with the highest rainfall) is November (68mm).
The driest month (with the least rainfall) is May (32mm).
Average rainfall days in May
Dundrum, United Kingdom
- Average rainfall days in May: 15.7 days
The month with the highest number of rainy days is July (19.4 days).
The month with the least rainy days is September (11.5 days).
Average snowfall in May
Dundrum, United Kingdom
- Average snowfall in May: 0mm
The month with the highest snowfall is January (9mm).
The months with the least snowfall are April, May, June, July, August, September and October (0mm).
Average snowfall days in May
Dundrum, United Kingdom
- Average snowfall days in May: 0 days
The month with the highest number of snowfall days is February (2 days).
The months with the least snowfall days are April, May, June, July, August, September and October (0 days).
Average sea temperature in May
Dundrum, United Kingdom
- Average sea temperature in May: 10.2°C
The best month for swimming (with the highest average sea temperature) is August (14.8°C).
The coldest month (with the lowest average sea temperature) is March (8.2°C).
Average daylight in May /
Average sunshine in May
Dundrum, United Kingdom
- Average daylight in May: 16h and 0min
The month with the longest days is June (Average daylight: 17h and 6min).
The month with the shortest days is December (Average daylight: 7h and 24min).
- Average sunshine in May: 7h and 18min
The month with the most sunshine is June (Average sunshine: 7h and 48min).
The months with the least sunshine are January and February (Average sunshine: 3h and 54min).
Average sunshine days in May
Dundrum, United Kingdom
- Average sunshine days in May: 13.2 days
The month with the most sunshine days is September (15.7 days).
The month with the least sunshine days is July (9.2 days).
Average UV index in May
Dundrum, United Kingdom
- Average UV index in May: 3
The months with the highest UV index are June, 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
Dundrum, United Kingdom
- Average cloud cover in May: 52
The months with the most cloud cover are January and February (Cloud cover 60).
The month with the least cloud cover is April (Cloud cover 51).
Average visibility in May
Dundrum, United Kingdom
- Average visibility in May: 9km
The months with the highest visibility are February, March, September, October, November and December (10km).
The months with the lowest visibility are January, April, May, June, July and August (9km).
