Triest Weather in December

In Triest, December brings low daytime temperatures around 9°C (48°F), with nights cooling to 3°C (37°F). Expect quite a bit of rainfall this month.

Rainfall in Triest in December

Expect around 12 days of rain based on historical data, with 127 mm (5 in) 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 Triest in December

Daytime temperatures in Triest reach 9°C (48°F) in December, dropping to 3°C (37°F) at night. Experience the winter season in December. Temperatures remain on the cold side all day. A proper warm jacket is worth having, not just for evenings. At 3°C (37°F) overnight, it gets properly cold after dark. On the bright side, cold nights tend to make for excellent sleeping conditions.

Sunshine in Triest in December

The month has fewer sunny days, with around 84 hours of sunshine.

Average water temperature in December

The water sits at 11°C (52°F) this month, which is well below what most people consider swimmable. Wetsuits help, but expect it to still feel cold.

Our weather planner can help you find worldwide destinations with pleasant weather during this period. July typically offers the best weather for Triest.

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

Triest Temperature in December

Min Temperature 3°C (37°F)  

Max Temperature 9°C (48°F)  

Water Temperature 11°C (52°F)  

Chance of Rain 40%  

Precipitation 127 mm (5 in)  

Rainy days 12 days  

Humidity 67%  

Sunshine 84 hours  

Percentage Sunshine 31%  

What to Wear in Triest in December

Dress warmly and in layers for your trip to Triest in December. A good base layer system works wonders. Start with good thermal underwear, add something warm like a fleece sweater, then finish with a waterproof jacket on top. Expect heavy rainfall, so bring good rain protection and waterproof bags. With water temperatures around 11°C (52°F), the water is quite cold for swimming. You can skip the swimwear unless you're particularly tough. With limited sunshine expected, sunglasses aren't a priority for packing.

What To Do in Triest 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 Triest's climate page.

More climate data for Triest

Temperature Rainfall Sunshine Humidity Water Temp

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