Cool
Average highs are around 8°C, so pack for cooler days.
December verdict
Arranmore, Ireland in December
Weather score8Poor
Poor for holiday weather
Average highs are around 8°C, so pack for cooler days. Sunshine averages 1h per day, so this is not one of the brighter months. Rainfall averages 177mm, so some wet days are possible.
December weather
Monthly averages
Temp
8°C
Rain
177mm
Sun
1h
Sea
10°C
Weather score
8
Poor
Seasonal climate calendar
TemperatureTemp
RainRain
SunSun
SwimSwim
Weather scoreWeather score
Trip feel
Showers
Rainfall averages 177mm, so some wet days are possible.
Limited sun
Sunshine averages 1h per day, so this is not one of the brighter months.
Cool sea
Sea temperatures average 10°C, so the water can feel cool.
Map
Weather map
Compare Arranmore, Ireland with nearby places by weather score, rain, sun, temperature, and swim conditions.
Temperature
December8°C average high
December has some of the coolest average daytime highs of the year, so pack for fresher conditions.
Warmest monthsJune to September
This stretch sets the upper range for average daytime heat.
Rain
December177mm average rain
December is one of Arranmore's wettest months, so rain is likely to be a major planning factor.
Driest monthsFebruary and April to July
This is the drier part of the year, when outdoor plans usually need less weather flexibility.
Sun
December1 hour average sun
December is one of Arranmore's cloudier months, so sunshine-led plans are less reliable.
Brightest monthsApril to June
This stretch has the strongest sunshine in the monthly averages.
Sea temperature
December10°C average sea
December is below Arranmore's yearly sea-temperature average, so swimming can feel fresher.
Warmest seaJuly to September
Sea temperatures are usually near 15°C in this stretch, so swimming comfort is at its strongest.
Weather score
December8 weather score
December is one of the weakest weather-score months, when the overall mix is less favourable than the rest of the year.
Best weather monthsApril to August
These months have the strongest weather score in the monthly averages.
