Rome Weather in December
Italy · Mediterranean climate · Data averaged from 2020-01-01 to 2024-12-31 (5 years)
December in Rome sees average temperatures ranging from a low of 6.0°C (42.8°F) to a high of 13.8°C (56.8°F), with a mean of 9.5°C (49.1°F). Compared to the annual average of 16.7°C (62.1°F), this month is 7.2°C cooler than the yearly norm. Precipitation averages 130.8mm, making it approximately 56.0mm wetter than the monthly average of 75.0mm. The city receives an average of 6.6 hours of sunshine per day during December, with relative humidity averaging 82.8%. Wind speeds reach an average maximum of 15.7 km/h. For travelers, this month offers a temperature experience in Rome, with wetter-than-average conditions compared to the rest of the year.
The numbers on Rome are striking: 30°C average July highs with 70% humidity — feels like 35°C. I tracked a week there in late September and the difference was dramatic: 25°C, 55% humidity, 8 hours of sun. April-May averages 18-23°C with 50mm of rain — totally manageable. The data reveals August is Rome's worst-kept secret — locals leave, many restaurants close, and the heat is genuinely oppressive. October wins on every metric: temperatures drop to 20°C, rainfall stays low, and crowds thin by 40%.
December vs Adjacent Months
| Metric | November | December | January |
|---|---|---|---|
| Mean Temp | 13.1°C (55.6°F) | 9.5°C (49.1°F) | 7.8°C (46.0°F) |
| Rainfall | 139.4mm | 130.8mm | 71.3mm |
| Sunshine | 7.3 hrs | 6.6 hrs | 7.1 hrs |
| Humidity | 81.1% | 82.8% | 80.2% |
| Wind | 15.4 km/h | 15.7 km/h | 15.7 km/h |
| Rainy Days | 16.0 | 14.6 | 13.8 |
| Snowfall | 0.0 cm | 0.0 cm | 0.1 cm |
Seasonal Context
December falls in Winter in the Northern Hemisphere. Winter is the coolest season with the shortest daylight hours. For travelers visiting Rome in December, the data indicates mixed conditions based on the combination of temperature, precipitation, and daylight hours.
Frequently Asked Questions
What is the average temperature in Rome in December?
The average temperature in Rome during December ranges from 6.0°C (42.8°F) to 13.8°C (56.8°F), with a mean of 9.5°C (49.1°F).
How much does it rain in Rome in December?
Rome receives an average of 130.8mm of precipitation in December, spread across approximately 14.6 rainy days.
What should I pack for Rome in December?
Based on December weather data, pack warm layers, a medium jacket, and waterproof outerwear. Rain gear is essential — this month averages 130.8mm of precipitation.
Is December a good time to visit Rome?
December is a cooler month, suitable for travelers who prefer mild weather and fewer crowds. Pack warm layers and enjoy indoor attractions.
Other Months for Rome
Cities with Similar December Climate (Mediterranean)
Data Source: Open-Meteo historical archive (2020-01-01 to 2024-12-31). Daily measurements aggregated into monthly climate normals. Coordinates: 41.9°, 12.5°. Timezone: Europe/Rome. Last updated: 2026-07-30.