Cool
Average highs are around 9°C, so pack for cooler days.
March verdict
Letterkenny, Ireland in March
Weather score15Poor
Poor for holiday weather
Average highs are around 9°C, so pack for cooler days. Sunshine averages 3h per day, so this is not one of the brighter months. Rainfall averages 98mm, so some wet days are possible.
March weather
Monthly averages
Temp
9°C
Rain
98mm
Sun
3h
Sea
9°C
Weather score
15
Poor
Seasonal climate calendar
TemperatureTemp
RainRain
SunSun
SwimSwim
Weather scoreWeather score
Trip feel
Showers
Rainfall averages 98mm, so some wet days are possible.
Limited sun
Sunshine averages 3h per day, so this is not one of the brighter months.
Cool sea
Sea temperatures average 9°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
March9°C average high
March is on the cooler side of Letterkenny's year, useful if you prefer less intense daytime heat.
Warmest monthsJune to September
This stretch sets the upper range for average daytime heat.
Rain
March98mm average rain
March sits near Letterkenny's yearly rainfall average, so rain is a normal planning factor rather than an outlier.
Driest monthsFebruary to August
This is the drier part of the year, when outdoor plans usually need less weather flexibility.
Sun
March3 hours average sun
March sits close to Letterkenny's yearly sunshine average, so it is a middle-of-the-pack month for bright days.
Brightest monthsApril to June
This stretch has the strongest sunshine in the monthly averages.
Sea temperature
March9°C average sea
March is one of the coolest sea months, so the water may feel fresher than in peak months.
Warmest seaJuly to September
Sea temperatures are usually near 15°C in this stretch, so swimming comfort is at its strongest.
Weather score
March15 weather score
March scores below Letterkenny's yearly average, so the weather trade-offs are more noticeable.
Best weather monthsApril to August
These months have the strongest weather score in the monthly averages.
