December · Italy
Best time to visit Trieste in December Weather, crowds & prices
Weather in Trieste in December
Average temperature 6°C, 130 mm of rain, about 0 days with 6+ hours of sunshine and 85% humidity — based on the five most recent complete years of ERA5 data (2021–2025).
December score
3.7/10
Ranked #12 of 12 months
- Avg temp
- 6°C
- Rainfall
- 130 mm
- Humidity
- 85%
- Days with 6h+ sun
- 0
- Crowd Density
- Quiet / Uncrowded
- Average Expenses
- $ · Budget Friendly ($)
December in Trieste scores 3.7/10 for sightseeing and cultural travel - ranked #12 of 12. Expect around 6°C, 130 mm of rain, and roughly 0 days with 6+ hours of sunshine this month.
Trieste faces the Adriatic with Habsburg cafés, a grand piazza on the water, and a Mitteleuropean literary past. Best window: April-June and September-October.
December in Trieste — the hardest end of the year
December averages 6°C (43°F) — jacket weather. Comfortable for walking and museums, too cool for anything water-based.
At 130 mm this is a genuinely wet month: almost no days with 6+ hours of sunshine in total, and outdoor plans need an indoor fallback.
It scores 3.7/10 here, 12th of 12 months, against 8.6/10 in the destination's best month.
Pack a mid-weight jacket, long sleeves and shoes you can walk 15 km in, a proper rain shell rather than an umbrella.
Figure on low-season pricing, with crowds are light for this destination.
Flexible dates? June scores 4.9 points higher here — enough to change the trip.
Frequently asked
- What is the weather like in Trieste in December?
- In December, Trieste averages 6°C, 130 mm of rain, and about 0 days with 6+ hours of sunshine. Its climate-comfort score is 3.7/10.
- Is December a good time to visit Trieste?
- December earns a 3.7/10 climate-comfort score. Use the year-round chart to weigh the weather against your budget and crowd preferences.
- How much does it rain in Trieste in December?
- Expect about 130 mm of rain in December. Average humidity is 85% and there are about 0 days with 6+ hours of sunshine.
Curated in Trieste
Tickets & experiences
Things to do in Trieste
Trieste, Italy. Live activities and tours from GetYourGuide, matched to this destination.