Cool
Average highs are around 7°C, so pack for cooler days.
December verdict
Seil, United Kingdom in December
Weather score6Poor
Poor for holiday weather
Average highs are around 7°C, so pack for cooler days. Sunshine averages 0.8h per day, so this is not one of the brighter months. Rainfall averages 210mm, so showers are a real planning factor.
December weather
Monthly averages
Temp
7°C
Rain
210mm
Sun
0.8h
Sea
10°C
Weather score
6
Poor
Seasonal climate calendar
TemperatureTemp
RainRain
SunSun
SwimSwim
Weather scoreWeather score
Trip feel
Wet
Rainfall averages 210mm, so showers are a real planning factor.
Limited sun
Sunshine averages 0.8h 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 Seil, United Kingdom with nearby places by weather score, rain, sun, temperature, and swim conditions.
Temperature
December7°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
December210mm average rain
December is one of Seil'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
December0.8 hours average sun
December is one of Seil's cloudier months, so sunshine-led plans are less reliable.
Brightest monthsApril to July
This stretch has the strongest sunshine in the monthly averages.
Sea temperature
December10°C average sea
December is close to Seil's yearly sea-temperature average, so swimming comfort is fairly typical.
Warmest seaJuly to October
Sea temperatures are usually near 13°C in this stretch, so swimming comfort is at its strongest.
Weather score
December6 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.
