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Mostar Weather in December
December in Mostar averages 8°C (46°F) during the day and 0°C (32°F) at night. December is part of the rainy season, with around 202 mm (8 in) of snow/rainfall and frequent showers.
Rainfall in Mostar in December
As part of the rainy season, Mostar sees around 13 days of rain in December, with an average of 202 mm (8 in). Rainy season showers here are typically intense, often clearing quickly but coming down hard while they last.
Temperature in Mostar in December
Daytime highs in Mostar in December reach 8°C (46°F), with nights around 0°C (32°F). Winter occurs in December. Temperatures remain on the cold side all day. A proper warm jacket is worth having, not just for evenings. With overnight lows of 0°C (32°F), temperatures fall below freezing at night. An extra thick blanket can make a real difference if your accommodation runs cold.
Sunshine in Mostar in December
The month brings about 112 hours of sunlight, offering a comfortable mix of sun and rainy moments.December in Mostar 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.
Mostar Temperature in December
Min Temperature
0°C (32°F)
Max Temperature
8°C (46°F)
Chance of Rain
45%
Precipitation
202 mm (8 in)
Rainy days
13 days
Humidity
67%
Sunshine
112 hours
Percentage Sunshine
Mostar Weather by Month
Pick a month to see the average temperature, rainfall and sunshine in Mostar - and find the best time to visit.
Daily Historical Temperatures
48-year average (1976-2025)
Based on our historical records, temperatures in Mostar typically stay consistent throughout December, with daily highs averaging around 8°C (46°F). Nights are very cold, with lows typically ranging from -3°C (27°F) to 1°C (34°F).
Average temperatures in December
Daily Historical Precipitation
48-year average (1976-2025)
Average daily rainfall for each day of the month based on long-term records.
Average precipitation in December
Historical weather records for Mostar in December
Browse day-by-day weather records for Mostar spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
Mostar historical weather extremes in December
Based on 30 years of weather observations (1995-2025), these are the most extreme conditions recorded in Mostar.
- The warmest day in December was on December 2, 2023, with a maximum of 20°C (68°F).
- The coldest December day was on December 29, 1995, with a maximum of -3°C (27°F).
Best Places in Bosnia and Herzegovina in December
Find out more about the weather in Bosnia and Herzegovina and which places have the best travel conditions in this month. See all of Bosnia and Herzegovina in December →
perfect weather
pleasant
tolerable
unpleasant
poor
Perfect weather is subjective. On this map perfect weather has been defined with temperatures between 20°C (68°F) and 29°C (84°F) and not too much precipitation (less than 90 mm (3.5 in) a month).
What to Wear in Mostar in December
Dress warmly and in layers for your trip to Mostar 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. It's going to pour! Pack a good poncho and prepare for very wet conditions. Bring sunglasses since you'll have some sunny periods throughout the month
What To Do in Mostar in December
We rated the following activities from 1 (least suitable) to 10 (best) to do.
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Swimming5/10 -
Cycling4/10 -
Walking4/10 -
Camping1/10 -
Outdoor sports4/10
Mostar 3-Day Forecast
More climate data for Mostar
Temperature Rainfall Sunshine Humidity
See the full Mostar climate overview or explore weather in Bosnia and Herzegovina.
Popular in December
Where to go in December - average daytime high across popular destinations.
Neum
12°C (54°F) Međugorje10°C (50°F) Trebinje10°C (50°F) Mostar8°C (46°F) Banja Luka
7°C (45°F) Visoko6°C (43°F) Jahorina4°C (39°F) Sarajevo5°C (41°F) Bucket list
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