Cool
Average highs are around 18°C, so pack for cooler days.
August verdict
Belfast, Northern Ireland, United Kingdom in August
Weather score31Poor
Poor for holiday weather
Average highs are around 18°C, so pack for cooler days. Sunshine averages 4.7h per day, so this is not one of the brighter months. Rainfall averages 89mm, so some wet days are possible.
August weather
Monthly averages
Temp
18°C
Rain
89mm
Sun
4.7h
Sea
14°C
Weather score
31
Poor
Seasonal climate calendar
TemperatureTemp
RainRain
SunSun
SwimSwim
Weather scoreWeather score
Trip feel
Showers
Rainfall averages 89mm, so some wet days are possible.
Limited sun
Sunshine averages 4.7h 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 Belfast, Northern Ireland, United Kingdom with nearby places by weather score, rain, sun, temperature, and swim conditions.
Temperature
August18°C average high
August is one of Belfast's hottest months, so shade and slower afternoons matter.
Warmest monthsJune to September
This stretch sets the upper range for average daytime heat.
Rain
August89mm average rain
August is wetter than Belfast's yearly average, so flexible plans matter more.
Driest monthsFebruary to August
This is the drier part of the year, when outdoor plans usually need less weather flexibility.
Sun
August4.7 hours average sun
August is brighter than Belfast's yearly average, though the strongest sunshine usually sits closer to the peak months.
Brightest monthsApril to July
This stretch has the strongest sunshine in the monthly averages.
Sea temperature
August14°C average sea
August is one of Belfast's warmest sea months, when swimming comfort is usually strongest.
Warmest seaJuly to October
Sea temperatures are usually near 13°C in this stretch, so swimming comfort is at its strongest.
Weather score
August31 weather score
August scores above Belfast's yearly average, so the overall weather mix is stronger than most months.
Best weather monthsJune to August
These months have the strongest weather score in the monthly averages.
