Cool
Average highs are around 18°C, so pack for cooler days.
August verdict
Portmeirion, United Kingdom in August
Weather score35Poor
Poor for holiday weather
Average highs are around 18°C, so pack for cooler days. Sunshine averages 5.1h per day, enough for a balanced month. Rainfall averages 135mm, so some wet days are possible.
August weather
Monthly averages
Temp
18°C
Rain
135mm
Sun
5.1h
Weather score
35
Poor
Seasonal climate calendar
TemperatureTemp
RainRain
SunSun
Weather scoreWeather score
Trip feel
Showers
Rainfall averages 135mm, so some wet days are possible.
Some sun
Sunshine averages 5.1h per day, enough for a balanced month.
Map
Weather map
Compare Portmeirion, United Kingdom with nearby places by weather score, rain, sun, temperature, and swim conditions.
Temperature
August18°C average high
August is one of Portmeirion's hottest months, so shade and slower afternoons matter.
Warmest monthsJune to September
This stretch sets the upper range for average daytime heat.
Rain
August135mm average rain
August sits near Portmeirion's yearly rainfall average, so rain is a normal planning factor rather than an outlier.
Driest monthsFebruary and April to July
This is the drier part of the year, when outdoor plans usually need less weather flexibility.
Sun
August5.1 hours average sun
August is brighter than Portmeirion's yearly average, though the strongest sunshine usually sits closer to the peak months.
Brightest monthsApril to August
This stretch has the strongest sunshine in the monthly averages.
Weather score
August35 weather score
August scores above Portmeirion'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.
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