Cool
Average highs are around 14°C, so pack for cooler days.
Weather Guide
Killarney, Ireland Average Monthly Weather
Weather score19Poor annual avg
Best months: July, June, August
Across the year, average daytime temperatures are around 13°C, sunshine averages 3.5h per day, and rainfall totals about 1371mm. Sea temperatures average 12°C across the year.
Annual weather
Annual averages
Temp
13°C
Rain
1371mm
Annual total
Sun
3.5h
Sea
12°C
Weather score
19
Poor avg
Seasonal climate calendar
TemperatureTemp
RainRain
SunSun
SwimSwim
Weather scoreWeather score
Trip feel
Showers
Rainfall averages 140mm, so some wet days are possible.
Limited sun
Sunshine averages 2.6h per day, so this is not one of the brighter months.
Cool sea
Sea temperatures average 14°C, so the water can feel cool.
Map
Weather map
Compare Killarney, Ireland with nearby places by weather score, rain, sun, temperature, and swim conditions.
Temperature
October14°C average high
October is close to Killarney'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
October140mm average rain
October is wetter than Killarney's yearly average, so flexible plans matter more.
Driest monthsApril to August
This is the drier part of the year, when outdoor plans usually need less weather flexibility.
Sun
October2.6 hours average sun
October is below Killarney's yearly sunshine average, so bright-day planning is less reliable than in peak months.
Brightest monthsApril to July
This stretch has the strongest sunshine in the monthly averages.
Sea temperature
October14°C average sea
October sits in the warmer sea-temperature season, usually making swimming easier to enjoy.
Warmest seaJuly to September
Sea temperatures are usually near 15°C in this stretch, so swimming comfort is at its strongest.
Weather score
October13 weather score
October scores below Killarney's yearly average, so the weather trade-offs are more noticeable.
Best weather monthsJune to August
These months have the strongest weather score in the monthly averages.
