Trieste, ItalyQuick decision
When to visit Trieste?
🌞 Best time overall
June
🌡️ Optimal temperature
18°C–27°C in June
🌧 Least rain
30% rainy days in June
🌧 Wettest month
December (37%)
📅 Best score
8.8/10
By trip type
Best time by type of trip
Historic cafésYear-round — San Marco, Antico Torinese: Italy's coffee capital.
Miramare CastleYear-round — Habsburg palace by the sea, botanical gardens.
Barcola & Grotta GiganteJun–Sep — local swimming, world's largest tourist cave.
Karst osmizeYear-round — rural Karst taverns, jota triestina, local wines.
Monthly climate data
Trieste weather month by month
| Month | Min °C | Max °C | Rainy days (%) | Precip. mm/d | Sun h/d | Score |
|---|---|---|---|---|---|---|
| 🌫️ January | 2°C | 9°C | 34% | 3.4 | 7.2h | 4.3/10 |
| 🌦️ February | 4°C | 11°C | 36% | 3.9 | 8.6h | 4.8/10 |
| ⛅ March | 6°C | 14°C | 32% | 3.4 | 10.7h | 6.8/10 |
| ⛅ April | 9°C | 17°C | 32% | 3.2 | 12.0h | 7.1/10 |
| 🌦️ May | 13°C | 21°C | 50% | 5.2 | 12.7h | 7.3/10 |
| 🌤️ June | 18°C | 27°C | 30% | 3.0 | 14.0h | 8.8/10 |
| 🌤️ July | 20°C | 29°C | 29% | 3.4 | 14.0h | 8.6/10 |
| 🌤️ August | 21°C | 29°C | 25% | 3.0 | 13.0h | 8.6/10 |
| 🌤️ September | 17°C | 24°C | 37% | 6.3 | 11.7h | 7.7/10 |
| 🌤️ October | 13°C | 19°C | 37% | 5.7 | 9.7h | 7.1/10 |
| 🌦️ November | 8°C | 14°C | 45% | 6.3 | 7.2h | 4.5/10 |
| 🌦️ December | 4°C | 10°C | 37% | 4.0 | 6.5h | 4.2/10 |
Ideal
Fair
Challenging climate
Source: Open-Meteo · 10 years
Seasonal breakdown
What to expect each season
🌸 Spring (Mar–May) — Good time
Average 17°C, 38% rainy days, 11.8h sunshine/day. Score: 7.1/10.
☀️ Summer (Jun–Aug) — Excellent time
Average 28°C, 28% rainy days, 13.7h sunshine/day. Score: 8.7/10.
🍂 Autumn (Sep–Nov) — Acceptable
Average 19°C, 40% rainy days, 9.5h sunshine/day. Score: 6.4/10.
❄️ Winter (Dec–Feb) — Challenging climate
Average 10°C, 36% rainy days, 7.4h sunshine/day. Score: 4.4/10.
Accommodation
Find a place to stay in Trieste
Check availability during the recommended period
Tip : March, April offer a good weather/price balance — decent score with fewer crowds.
Search on Hotels.comActivities & tours
Activities and tours in Trieste
Guided tours, skip-the-line tickets and local experiences.
Browse activities on GetYourGuide
Flights
Find a flight to Trieste
Compare flights from all airlines.
Search flights
Monthly weather
Detailed weather by month
FAQ
Frequently asked questions
June is ideal with 30% rainy days and 27°C.
December is the wettest month with 37% rainy days.
Yes, June is the best month with an average of 27°C.
In winter, the average score is 4.4/10. Difficult period — prefer the peak season.
Also explore
Destinations with similar climate
SloveniaWeather rankings
Compare destinations by weather
Best in EuropeGuides & comparisons