Month by month
| Month | Afternoon | Sea | Rain | Verdict |
|---|---|---|---|---|
| January | 12.3 °C | 15.2 °C | 8 days | Possible, with trade-offs |
| February | 13.6 °C | 14.4 °C | 9 days | Possible, with trade-offs |
| March | 15.1 °C | 14.2 °C | 9 days | Possible, with trade-offs |
| April | 17.9 °C | 15.4 °C | 7 days | Possible, with trade-offs |
| May | 21.4 °C | 18.1 °C | 10 days | Pleasant — a good time to go |
| June | 26.5 °C | 22.3 °C | 6 days | Ideal — one of the best times of year |
| July | 30 °C | 25.5 °C | 2 days | Ideal — one of the best times of year |
| August | 30.1 °C | 26 °C | 4 days | Ideal — one of the best times of year |
| September | 25.8 °C | 24.2 °C | 8 days | Ideal — one of the best times of year |
| October | 21.5 °C | 21.5 °C | 11 days | Pleasant — a good time to go |
| November | 16.9 °C | 19.2 °C | 13 days | Possible, with trade-offs |
| December | 13.7 °C | 16.6 °C | 9 days | Possible, with trade-offs |
Before you go
Three things to check once you have picked your dates.
Entry
Italy is in the European Union. Entry rules depend on your nationality — check before booking.
Safety
No specific restrictions
Usual precautions apply.
Official advice updated 11 August 2026
Health
Recommended vaccinations, water quality, mosquitoes: advice depends on the country and the season. Some vaccines need time before departure.
Beau Fixe is not a safety or health authority. These notes summarise public advisories and link to their source; only the competent authorities are authoritative. Alert levels: Foreign, Commonwealth & Development Office (gov.uk), Open Government Licence v3.0.
FAQ
Can you swim in Monte Argentario in December?
The sea averages 16.6°C in December — too cold for most swimmers.
How hot is Monte Argentario in December?
Expect 13.7°C in the afternoon and 7.1°C at night, averaged over the last 10 years.
Does it rain a lot in Monte Argentario in December?
Around 9 days with rain (≥ 1 mm) in the month — 30% of days.