Sistiana Weather in December

December in Sistiana averages 9°C (48°F) during the day and 4°C (39°F) at night. Quite a bit of rainfall is typical this month, with around 133 mm (5.2 in) on average. An umbrella is a good idea.

Rainfall in Sistiana in December

Climate statistics over the past 30 years suggest around 12 days of rain, with 133 mm (5.2 in) average for the month. When showers do arrive, they tend to be on the heavier side. Worth being prepared even if rain days are not that numerous.

Temperature in Sistiana in December

December in Sistiana brings typical temperatures with highs around 9°C (48°F) and lows of 4°C (39°F). December marks the winter season. Temperatures remain on the cold side all day. A proper warm jacket is worth having, not just for evenings. Nights fall to 4°C (39°F), which is cold enough to feel it indoors too. A good thick duvet makes all the difference for a comfortable night's sleep.

Sunshine in Sistiana in December

The area sees fewer sunny days, with a projection of about 84 hours of sunshine. This reduced sunlight makes it ideal for those who prefer overcast conditions over bright sunny days.

Average water temperature in December

With water temperatures around 11°C (52°F), swimming isn't really an option for most visitors. The cold sets in quickly and a wetsuit won't fully solve it.

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

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

Sistiana Temperature in December

Min Temperature 4°C (39°F)  

Max Temperature 9°C (48°F)  

Water Temperature 11°C (52°F) *  

Chance of Rain 40%  

Precipitation 133 mm (5.2 in)  

Rainy days 12 days  

Humidity 67% *  

Sunshine 84 hours *  

Percentage Sunshine 31% *  

* Data from: Triest, Italy (15 KM, 9 Miles).

What to Wear in Sistiana in December

Dress warmly and in layers for your trip to Sistiana 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 Sistiana 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 Sistiana's climate page.

More climate data for Sistiana

Temperature Rainfall Sunshine Humidity Water Temp

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