Mild
Average highs are around 21°C, so days are mild rather than hot.
Weather Guide
Best months: July, August, June
Across the year, average daytime temperatures are around 20°C, sunshine averages 6.3h per day, and rainfall totals about 560mm. Sea temperatures average 19°C across the year.

Annual averages
Temp
20°C
Rain
560mm
Annual total
Sun
6.3h
Sea
19°C
Weather score
49
Mixed avg
Mild
Average highs are around 21°C, so days are mild rather than hot.
Drier
Rainfall averages 69mm, which is relatively low for holiday planning.
Some sun
Sunshine averages 5.6h per day, enough for a balanced month.
Cool sea
Sea temperatures average 21°C, so the water can feel cool.
Map
Compare Porto Ercole, Italy with nearby places by weather score, rain, sun, temperature, and swim conditions.
October21°C average high
October is close to Porto Ercole's yearly temperature average, giving a typical read on daytime heat.
Warmest monthsJune to September
This stretch sets the upper range for average daytime heat.
October69mm average rain
October is one of Porto Ercole's wettest months, so rain is likely to be a major planning factor.
Driest monthsJune to August
This is the drier part of the year, when outdoor plans usually need less weather flexibility.
October5.6 hours average sun
October is below Porto Ercole's yearly sunshine average, so bright-day planning is less reliable than in peak months.
Brightest monthsJune to August
This stretch has the strongest sunshine in the monthly averages.
October21°C average sea
October is close to Porto Ercole's yearly sea-temperature average, so swimming comfort is fairly typical.
Warmest seaJuly to September
Sea temperatures are usually near 25°C in this stretch, so swimming comfort is at its strongest.
October50 weather score
October sits close to Porto Ercole's yearly weather-score average, giving a typical overall read on the month.
Best weather monthsJune to August
These months have the strongest weather score in the monthly averages.