Cool
Average highs are around 13°C, so pack for cooler days.
May verdict
Letterkenny, Ireland in May
Weather score23Poor
Poor for holiday weather
Average highs are around 13°C, so pack for cooler days. Sunshine averages 5.4h per day, enough for a balanced month. Rainfall averages 82mm, so some wet days are possible.
May weather
Monthly averages
Temp
13°C
Rain
82mm
Sun
5.4h
Sea
11°C
Weather score
23
Poor
Seasonal climate calendar
TemperatureTemp
RainRain
SunSun
SwimSwim
Weather scoreWeather score
Trip feel
Showers
Rainfall averages 82mm, so some wet days are possible.
Some sun
Sunshine averages 5.4h per day, enough for a balanced month.
Cool sea
Sea temperatures average 11°C, so the water can feel cool.
Map
Weather map
Compare Letterkenny, Ireland with nearby places by weather score, rain, sun, temperature, and swim conditions.
Temperature
May13°C average high
May is close to Letterkenny's yearly temperature average, giving a typical read on daytime heat.
Warmest monthsJune to September
This stretch sets the upper range for average daytime heat.
Rain
May82mm average rain
May sits on the drier side of Letterkenny's year, which helps with sightseeing and transfers.
Driest monthsFebruary to August
This is the drier part of the year, when outdoor plans usually need less weather flexibility.
Sun
May5.4 hours average sun
May is one of Letterkenny's sunniest months, with some of the strongest bright-day conditions in the yearly averages.
Brightest monthsApril to June
This stretch has the strongest sunshine in the monthly averages.
Sea temperature
May11°C average sea
May is close to Letterkenny's yearly sea-temperature average, so swimming comfort is fairly typical.
Warmest seaJuly to September
Sea temperatures are usually near 15°C in this stretch, so swimming comfort is at its strongest.
Weather score
May23 weather score
May scores above Letterkenny's yearly average, so the overall weather mix is stronger than most months.
Best weather monthsApril to August
These months have the strongest weather score in the monthly averages.
