Cool
Average highs are around 8°C, so pack for cooler days.
December verdict
Dover, Delaware, United States in December
Weather score25Poor
Poor for holiday weather
Average highs are around 8°C, so pack for cooler days. Sunshine averages 4.7h per day, so this is not one of the brighter months. Rainfall averages 91mm, so some wet days are possible.
December weather
Monthly averages
Temp
8°C
Rain
91mm
Sun
4.7h
Sea
7°C
Weather score
25
Poor
Seasonal climate calendar
TemperatureTemp
RainRain
SunSun
SwimSwim
Weather scoreWeather score
Trip feel
Showers
Rainfall averages 91mm, 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 7°C, so the water can feel cool.
Map
Weather map
Compare Dover, Delaware, United States 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
December91mm average rain
December sits near Dover's yearly rainfall average, so rain is a normal planning factor rather than an outlier.
Driest monthsJanuary to July and September to December
This is the drier part of the year, when outdoor plans usually need less weather flexibility.
Sun
December4.7 hours average sun
December is one of Dover's cloudier months, so sunshine-led plans are less reliable.
Brightest monthsMay to August
This stretch has the strongest sunshine in the monthly averages.
Sea temperature
December7°C average sea
December is below Dover's yearly sea-temperature average, so swimming can feel fresher.
Warmest seaJune to September
Sea temperatures are usually near 21°C in this stretch, so swimming comfort is at its strongest.
Weather score
December25 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 monthsJune to September
These months have the strongest weather score in the monthly averages.
