Warm
Average highs sit around 30°C, giving warm days by monthly-average standards.
Weather Guide
Dover, Delaware, United States Average Monthly Weather
Weather score46Mixed annual avg
Best months: August, July, June
Across the year, average daytime temperatures are around 19°C, sunshine averages 7h per day, and rainfall totals about 1103mm. Sea temperatures average 14°C across the year.
Annual weather
Annual averages
Temp
19°C
Rain
1103mm
Annual total
Sun
7h
Sea
14°C
Weather score
46
Mixed avg
Seasonal climate calendar
TemperatureTemp
RainRain
SunSun
SwimSwim
Weather scoreWeather score
Trip feel
Showers
Rainfall averages 105mm, so some wet days are possible.
Bright
Sunshine averages 8.4h per day, so bright days are a strong part of the month.
Swimmable
Sea temperatures average 25°C, which can work for swimming but may feel fresh.
Map
Weather map
Compare Dover, Delaware, United States with nearby places by weather score, rain, sun, temperature, and swim conditions.
Temperature
August30°C average high
August is one of Dover's warmest months, with daytime heat above the yearly average.
Warmest monthsJune to September
This stretch sets the upper range for average daytime heat.
Rain
August105mm average rain
August is one of Dover's wettest months, so rain is likely to be a major planning factor.
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
August8.4 hours average sun
August is brighter than Dover's yearly average, though the strongest sunshine usually sits closer to the peak months.
Brightest monthsMay to August
This stretch has the strongest sunshine in the monthly averages.
Sea temperature
August25°C average sea
August is one of Dover's warmest sea months, when swimming comfort is usually strongest.
Warmest seaJune to September
Sea temperatures are usually near 21°C in this stretch, so swimming comfort is at its strongest.
Weather score
August77 weather score
August is one of Dover's best weather-score months, combining the strongest overall balance in the yearly averages.
Best weather monthsJune to September
These months have the strongest weather score in the monthly averages.
