Cool
Average highs are around 8°C, so pack for cooler days.
December verdict
Poor for holiday weather
Average highs are around 8°C, so pack for cooler days. Sunshine averages 3h per day, so this is not one of the brighter months. Rainfall averages 115mm, so some wet days are possible.
Monthly averages
Temp
8°C
Rain
115mm
Sun
3h
Sea
13°C
Weather score
19
Poor
Cool
Average highs are around 8°C, so pack for cooler days.
Showers
Rainfall averages 115mm, so some wet days are possible.
Limited sun
Sunshine averages 3h 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 Nova Gorica, Slovenia with nearby places by weather score, rain, sun, temperature, and swim conditions.
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.
December115mm average rain
December sits near Nova Gorica's yearly rainfall average, so rain is a normal planning factor rather than an outlier.
Driest monthsJanuary to March, July, and December
This is the drier part of the year, when outdoor plans usually need less weather flexibility.
December3 hours average sun
December is one of Nova Gorica's cloudier months, so sunshine-led plans are less reliable.
Brightest monthsJune to August
This stretch has the strongest sunshine in the monthly averages.
December13°C average sea
December is below Nova Gorica's yearly sea-temperature average, so swimming can feel fresher.
Warmest seaJune to September
Sea temperatures are usually near 23°C in this stretch, so swimming comfort is at its strongest.
December19 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.