The month in detail
What to expect in December
Winter in Trieste is cool (10°C during the day). Days are short (2.9h of sunshine) but the city reveals a different side. Rain risk remains low (25% of days), leaving good room for outdoor activities.
December ranks 11 out of 12 months in Trieste. Compared to November: −4°C daytime, 10 pts fewer rainy days.
This month's conditions
What it's like in December
UV index
2 · low
no protection needed
Feels like
dry air
3°
Sea
10°C
cold, for the brave
Daylight
8.5h of daylight
Air quality
good
AQI 28
Compare
Is December the right month?
The best month in Trieste is July (8.9/10), 4.9 pts higher than December.
Book
Plan your trip
Hotels at their lowest outside peak season, highest on comfortable months. Shoulder seasons offer a good price/climate compromise.
Stay
Hotels & rentals · Trieste
Expedia →
Activities
Tours, tickets, experiences
See ↓
Flights
Multi-airline comparator
Kiwi →
🎟️ Activities & tours · Trieste
GetYourGuide selection · free cancellation
Practical info
What you need to know before you go
Three angles: the country (language, currency, safety, budget), the year-round climate, and the specifics of a beach holiday.
Country · Italy
🗣️LanguageItalian
💶CurrencyEuro (€)
🚗DrivingRight-hand
🛡️Safety ⓘVery safe · 1/5
💰Cost of living ⓘModerate · 3/5
🌡️ Climate
🌍Climate typeTemperate oceanic
📈Climate trend ⓘStable
🔥Hottest monthJuly · 29°C
❄️Coolest monthJanuary · 9°C
🌧️Rainiest month ⓘNovember · 35%
🏖️ Beach holiday
📅Peak seasonJuin → Sept
🏖️Swell (Sept–Mar) ⓘModérée
🛂VisaSchengen · 90 days
Explore
Other destinations in December
If December doesn't convince you for this destination, compare with others.
Location
Where is Trieste ?
Global position + regional geographic context.
🌍 World
🔍 Geographic context
ItalyTemperate oceanic climate with a 8.9 → 4.0 gap between best and worst month. 10 years of ERA5 data to choose by project.
45.65°N · 13.78°E
Questions
Frequently asked questions
What is the best time to visit Trieste?
July is the best month with 29.0°C highs, 20.0°C lows, 9.6h of sunshine and 19.0% rainy days. The months of July & August offer comparable conditions.
How many hours of sunshine does Trieste get in July?
Trieste averages 9.6 sunshine hours per day in July. It is the sunniest month with a climate score of 8.5/10.
What is the rainiest month in Trieste?
January is the most unfavourable month with January has the lowest climate score of the year and the lowest climate score of the year.
What are the temperatures at night in Trieste in July?
In July, overnight lows reach 20.0°C, while afternoon highs average 29.0°C.
Is Trieste good in winter?
In winter (December-February), Trieste scores 4.0/10 on average — Difficult period — prefer the peak season.. The best month overall remains July with a score of 8.5/10.
When should you avoid Trieste?
January is the most difficult month to visit Trieste, with January has the lowest climate score of the year. Climate conditions are at their lowest of the year during this period.
Can you swim in Trieste in December?
In December, the sea averages 10°C in Trieste: cold, for the brave. Best left to hardened swimmers or those with a wetsuit.
Do you need sun protection in Trieste in December?
The average UV index reaches 2 in December in Trieste (low), with about 8.5h of daylight. No protection needed.