Trieste Weather in December

December in Trieste brings low temperatures around 9°C (48°F) during the day, dropping to 3°C (37°F) at night, with quite a bit of rainfall expected, averaging around 127 mm (5 in) for the month.

Rainfall in Trieste in December

Based on our climate data of the past 30 years, about 12 days of rain are anticipated, with 127 mm (5 in) on average. When it rains this month, it tends to come down fairly heavily. Showers can be substantial even if they don't last all day.

Temperature in Trieste in December

December in Trieste brings typical temperatures with highs around 9°C (48°F) and lows of 3°C (37°F). The winter season takes place during December. It stays cool throughout the day, so warm layers are a good idea from morning to evening. With overnight lows of 3°C (37°F), nights are cold. The cold air does make for deep, comfortable sleep if you have enough blankets.

Sunshine in Trieste in December

The month is characterized by fewer sunny days, with roughly 84 hours hours of sunshine. Ideal for those who prefer a cooler, cloudier climate.

Average water temperature in December

The water temperature is only 11°C (52°F) this month — cold enough that most people will want to stay out. Hardy swimmers may manage a quick dip, but it won't be comfortable.

December in Trieste can still be great, but if you prefer pleasant temperatures along with dry and sunny conditions, our weather planner can help you explore other options in the world.

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• January
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For a detailed overview over the year and the best time to visit Italy, check out our Trieste's climate page.

Trieste Temperature in December

Min Temperature 3°C (37°F)  

Max Temperature 9°C (48°F)  

Water Temperature 11°C (52°F) *  

Chance of Rain 41%  

Precipitation 127 mm (5 in)  

Rainy days 12 days  

Humidity 67% *  

Sunshine 84 hours *  

Percentage Sunshine 31% *  

* Data from: Triest, Italy (2 KM, 1 Miles).

What to Wear in Trieste in December

We recommend to layer up for chilly conditions in Trieste in December. You could start with thermal underwear or a good base layer to keep your core warm on the cooler days this month. Maybe also add a sweater or fleece, and top it off with a windproof jacket. High rain levels are expected, so pack waterproof gear and an umbrella or poncho. The water temperature sits at about 11°C (52°F), which is too chilly for most people to enjoy swimming. Leave the swimsuit at home unless you love cold water. Sunglasses aren't essential this month, though you might want them for the occasional bright moment.

What To Do in Trieste in December

We rated the following activities from 1 (least suitable) to 10 (best) to do.

Swimming

4/10

Cycling

4/10

Walking

4/10

Camping

3/10

Outdoor sports

4/10

Select a Month

Check the conditions for any month of the year.

• January
• February
• March
• April

• May
• June
• July
• August

• September
• October
• November
• December

For a detailed overview over the year and the best time to visit Italy, check out our Trieste's climate page.

More climate data for Trieste

Temperature Rainfall Sunshine Humidity Water Temp

See the full Trieste climate overview or explore weather in Italy.