A day trip from Cannes to Monaco on the Riviera railway
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Monte Carlo in December sees moderate daytime temperatures of 12°C (54°F) and nighttime lows of 7°C (45°F). Rainfall is fairly high this month at around 89 mm (3.5 in), so pack a rain jacket to stay dry.
December in Monte Carlo 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.
Pick a month to see the average temperature, rainfall and sunshine in Monte Carlo - and find the best time to visit.
50-year average (1976-2025)
Based on our historical records, temperatures in Monte Carlo typically stay consistent throughout December, with daily highs averaging around 12°C (54°F). Nights are cold, with lows around 6°C (43°F).
50-year average (1976-2025)
Average daily rainfall for each day of the month based on long-term records.
Browse day-by-day weather records for Monte Carlo spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
Our historical data for Monte Carlo spans 1976 to 2025, revealing these weather extremes.
Find out more about the weather in Monaco and which places have the best travel conditions in this month. See all of Monaco in December →
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).
The weather can swing between comfortable and chilly in December, so flexibility is key. Pack a variety of tops, at least one warm layer, and both shorts and long pants. This gives you options no matter what the day brings. Expect heavy rainfall, so bring good rain protection and waterproof bags. The water temperature sits at about 15°C (59°F), which is too chilly for most people to enjoy swimming. Leave the swimsuit at home unless you love cold water. Bring sunglasses since you'll have some sunny periods throughout the month
We rated the following activities from 1 (least suitable) to 10 (best) to do.
Temperature Rainfall Sunshine Water Temp
See the full Monte Carlo climate overview or explore weather in Monaco.
Where to go in December - average daytime high across popular destinations.
Need travel inspiration? Check out our bucket list articles and be inspired.
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