Osp Weather in December

December in Osp sees daytime temperatures around 9°C (48°F) and lows of 2°C (36°F) at night. With around 122 mm (4.8 in) of rainfall expected, it's worth packing a rain jacket.

Rainfall in Osp in December

Historically, the month has about 13 days of rain, averaging 122 mm (4.8 in) in total. The rain this month tends to fall in heavier spells rather than light drizzle. When it rains, showers can be significant.

Temperature in Osp in December

If you're visiting Osp in December, expect highs of 9°C (48°F) and overnight lows around 2°C (36°F). December is part of winter. It stays cool throughout the day, so warm layers are a good idea from morning to evening. Nights fall to 2°C (36°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 Osp in December

The area experiences limited sunny days, amounting to roughly 84 hours of sunshine. This makes it perfect for those who lean towards cooler, cloudier settings rather than intense sunlit days.

Average water temperature in December

At 11°C (52°F), the water is too cold for most people to swim comfortably. A wetsuit is pretty much essential if you plan to go in.

December in Osp 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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For a detailed overview over the year and the best time to visit Slovenia, check out our Osp's climate page.

Osp Temperature in December

Min Temperature 2°C (36°F)  

Max Temperature 9°C (48°F)  

Water Temperature 11°C (52°F) *  

Chance of Rain 42%  

Precipitation 122 mm (4.8 in)  

Rainy days 13 days  

Humidity 67% *  

Sunshine 84 hours *  

Percentage Sunshine 31% *  

* Data from: Triest, Italy (12 KM, 7 Miles).

What to Wear in Osp in December

Cold weather calls for smart layering in December. A thermal base layer makes a huge difference in staying warm. Add a wool sweater or fleece, then a wind-resistant outer jacket. Prepare for significant rainfall with proper waterproof clothing and shoes. Expect water temperatures of around 11°C (52°F), which is definitely too cold for comfortable swimming. Your luggage space is better used for other items. Sunglasses aren't essential this month, though you might want them for the occasional bright moment.

What To Do in Osp 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 Slovenia, check out our Osp's climate page.

More climate data for Osp

Temperature Rainfall Sunshine Humidity Water Temp

See the full Osp climate overview or explore weather in Slovenia.