Cool
Average highs are around 15°C, so pack for cooler days.
August verdict
Poor for holiday weather
Average highs are around 15°C, so pack for cooler days. Sunshine averages 4.2h per day, so this is not one of the brighter months. Rainfall averages 110mm, so some wet days are possible.
Monthly averages
Temp
15°C
Rain
110mm
Sun
4.2h
Sea
13°C
Weather score
22
Poor
Cool
Average highs are around 15°C, so pack for cooler days.
Showers
Rainfall averages 110mm, so some wet days are possible.
Limited sun
Sunshine averages 4.2h per day, so this is not one of the brighter months.
Cool sea
Sea temperatures average 13°C, so the water can feel cool.
Map
Compare Lewis, United Kingdom with nearby places by weather score, rain, sun, temperature, and swim conditions.
August15°C average high
August is one of Lewis' hottest months, so shade and slower afternoons matter.
Warmest monthsJune to September
This stretch sets the upper range for average daytime heat.
August110mm average rain
August sits on the drier side of Lewis' year, which helps with sightseeing and transfers.
Driest monthsFebruary and April to August
This is the drier part of the year, when outdoor plans usually need less weather flexibility.
August4.2 hours average sun
August sits close to Lewis' 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.
August13°C average sea
August is one of Lewis' 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.
August22 weather score
August scores above Lewis' yearly average, so the overall weather mix is stronger than most months.
Best weather monthsApril to August
These months have the strongest weather score in the monthly averages.