Cool
Average highs are around 7°C, so pack for cooler days.
December verdict
Poor for holiday weather
Average highs are around 7°C, so pack for cooler days. Sunshine averages 3.1h per day, so this is not one of the brighter months. Rainfall averages 85mm, so some wet days are possible.
Monthly averages
Temp
7°C
Rain
85mm
Sun
3.1h
Sea
15°C
Weather score
20
Poor
Cool
Average highs are around 7°C, so pack for cooler days.
Showers
Rainfall averages 85mm, so some wet days are possible.
Limited sun
Sunshine averages 3.1h per day, so this is not one of the brighter months.
Cool sea
Sea temperatures average 15°C, so the water can feel cool.
Map
Compare Sulmona, Italy with nearby places by weather score, rain, sun, temperature, and swim conditions.
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.
December85mm average rain
December is wetter than Sulmona's yearly average, so flexible plans matter more.
Driest monthsJanuary to September and December
This is the drier part of the year, when outdoor plans usually need less weather flexibility.
December3.1 hours average sun
December is one of Sulmona's cloudier months, so sunshine-led plans are less reliable.
Brightest monthsJune to August
This stretch has the strongest sunshine in the monthly averages.
December15°C average sea
December is below Sulmona's yearly sea-temperature average, so swimming can feel fresher.
Warmest seaJuly to September
Sea temperatures are usually near 26°C in this stretch, so swimming comfort is at its strongest.
December20 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 monthsJuly to August
These months have the strongest weather score in the monthly averages.