Trebinje Weather in December

Trebinje in December averages 10°C (50°F) during the day and 3°C (37°F) at night. December is part of the rainy season, and falls within the winter season, so frequent rainfall is typical.

Rainfall in Trebinje in December

As part of the rainy season, Trebinje sees around 13 days of rain in December, with an average of 206 mm (8.1 in). Rainy season showers here are typically intense, often clearing quickly but coming down hard while they last.

Temperature in Trebinje in December

If you're visiting Trebinje in December, expect highs of 10°C (50°F) and overnight lows around 3°C (37°F). During December, you'll experience the winter season. Expect a cold feel throughout the day, not just in the mornings and evenings. Warm layers are essential. Nights fall to 3°C (37°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 Trebinje in December

The area experiences a moderate amount of sunshine, with approximately 125 hours of sunlight expected. Even though this month is part of the rainy season, you could still see the sun every now and then.

Average water temperature in December

With water at 16°C (61°F), it's on the cooler side. Keen swimmers won't be put off, but those who prefer warm water may find it less enjoyable.

If you're looking for dry conditions and comfortable temperatures, December may not be the ideal month to visit Trebinje. Our weather planner can help you explore destinations with more pleasant weather conditions.

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

Trebinje Temperature in December

Min Temperature 3°C (37°F)  

Max Temperature 10°C (50°F)  

Water Temperature 16°C (61°F) *  

Chance of Rain 44%  

Precipitation 206 mm (8.1 in)  

Rainy days 13 days  

Humidity 60% *  

Sunshine 125 hours *  

Percentage Sunshine 35% *  

* Data from: Dubrovnik, Croatia (20 KM, 12 Miles).

Daily Historical Temperatures

50-year average (1976-2025)

Based on our historical records, temperatures in Trebinje typically stay consistent throughout December, with daily highs averaging around 10°C (50°F). Nights are cold, with lows typically ranging from 4°C (39°F) to 7°C (45°F).

Average temperatures in December

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Daily Historical Precipitation

50-year average (1976-2025)

Average daily rainfall for each day of the month based on long-term records.

Average precipitation in December

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‹ January February March April May June July August September October November December ›

Historical weather for Trebinje in December

Browse day-by-day weather records for Trebinje spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.

Historical weather Temperatures Precipitation

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‹ January February March April May June July August September October November December ›

Trebinje historical weather extremes in December

The extremes listed below come from historical weather data collected in Trebinje from 1976 through 2025.

• The hottest December day on record in Trebinje reached 20°C (68°F) (December 5, 1979).
• Trebinje experienced its chilliest December day on December 30, 2014, reaching only 0°C (32°F).
• Nighttime temperatures dropped to -8°C (18°F) on December 10, 1991, marking the coldest December night on record.

What to Wear in Trebinje 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. Heavy rain is guaranteed, please bring a good poncho and waterproof everything! With water temperatures around 16°C (61°F), the water is quite cold for swimming. You can skip the swimwear unless you're particularly tough. Bring sunglasses since you'll have some sunny periods throughout the month

What To Do in Trebinje in December

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

Swimming

5/10

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 Bosnia and Herzegovina, check out our Trebinje's climate page.

More climate data for Trebinje

Temperature Rainfall Sunshine Humidity Water Temp

See the full Trebinje climate overview or explore weather in Bosnia and Herzegovina.