Weather Comparison
Side-by-side weather comparison for December
| Metric | Buenos Aires | Cape Town | Better |
|---|---|---|---|
| Average HighHigher is warmer | 27°C (81°F)▲ | 24°C (75°F) | Buenos Aires |
| Average LowHigher is milder | 19°C (66°F)▲ | 16°C (61°F) | Buenos Aires |
| Rain DaysFewer is drier | 8 days | 3 days▲ | Cape Town |
| PrecipitationLess is drier | 88 mm | 15 mm▲ | Cape Town |
| Sunshine HoursMore is sunnier | 12h/day | 13h/day▲ | Cape Town |
| HumidityLower is more comfortable | 70% | 70% | Tie |
| UV IndexLower is safer | 9 | 9 | Tie |
| Wind SpeedCalmer is better | 24 km/h▲ | 25 km/h | Buenos Aires |
Based on sunshine hours, rain days, comfortable temperatures, and humidity levels, Cape Town edges ahead as the better destination in December. Cape Town offers 13 hours of daily sunshine with only 3 rain days, while Buenos Aires sees 12 sunshine hours and 8 rain days.
Buenos Aires sits in the comfortable travel range at 27°C. Cape Town is also comfortable at 24°C.
For travelers who prioritize dry weather, Cape Town is the stronger choice in December. Cape Town receives 1 more hour of sunshine per day, which matters for sightseeing and outdoor activities.
Buenos Aires reaches an average high of 27°C (81°F) and drops to 19°C (66°F) at night during December. The daily temperature range is 8°C, meaning moderate variation throughout the day.
Cape Town averages 24°C (75°F) for the high and 16°C (61°F) for the low, with a daily range of 8°C. The 3°C difference is noticeable but not dramatic.
Both cities are in the Southern Hemisphere, so they share the same seasonal pattern in December.
Buenos Aires receives approximately 88 mm of rainfall across 8 rain days during December. You can expect rain roughly every other day.
Cape Town sees 15 mm over 3 rain days. That makes Cape Town the drier option by 5 rain days and 73 mm of total precipitation.
Both cities share similar humidity levels at 70%.
Highs of 27°C, lows of 19°C, 8 rain days
Highs of 24°C, lows of 16°C, 3 rain days
Pack for both: light layers, a light jacket for evenings, sunscreen. These items are useful in either destination during December.
The table below shows average high temperatures and rain days for every month. December is highlighted for quick reference.
| Month | Buenos Aires | Cape Town | ||
|---|---|---|---|---|
| High | Rain | High | Rain | |
| Jan | 28°C | 7d | 26°C | 3d |
| Feb | 27°C | 8d | 26°C | 2d |
| Mar | 25°C | 8d | 25°C | 3d |
| Apr | 21°C | 8d | 22°C | 5d |
| May | 17°C | 7d | 19°C | 7d |
| Jun | 14°C | 7d | 17°C | 10d |
| Jul | 13°C | 7d | 17°C | 9d |
| Aug | 16°C | 7d | 17°C | 9d |
| Sep | 17°C | 7d | 18°C | 7d |
| Oct | 20°C | 10d | 20°C | 5d |
| Nov | 24°C | 8d | 22°C | 5d |
| Dec | 27°C | 8d | 24°C | 3d |
Buenos Aires Weather in December
Full forecast, packing tips, and activities
Cape Town Weather in December
Full forecast, packing tips, and activities