Weather Comparison
Side-by-side weather comparison for December
| Metric | Cape Town | Buenos Aires | Better |
|---|---|---|---|
| Average HighHigher is warmer | 24°C (75°F) | 25°C (77°F)▲ | Buenos Aires |
| Average LowHigher is milder | 16°C (61°F) | 17°C (63°F)▲ | Buenos Aires |
| Rain DaysFewer is drier | 3 days▲ | 6 days | Cape Town |
| PrecipitationLess is drier | 15 mm▲ | 70 mm | Cape Town |
| Sunshine HoursMore is sunnier | 13h/day▲ | 7h/day | Cape Town |
| HumidityLower is more comfortable | 70% | 65%▲ | Buenos Aires |
| UV IndexLower is safer | 9 | 9 | Tie |
| Wind SpeedCalmer is better | 25 km/h | 15 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 7 sunshine hours and 6 rain days.
Cape Town sits in the comfortable travel range at 24°C. Buenos Aires is also comfortable at 25°C.
For travelers who prioritize dry weather, Cape Town is the stronger choice in December. Cape Town receives 6 more hours of sunshine per day, which matters for sightseeing and outdoor activities.
Cape Town reaches an average high of 24°C (75°F) and drops to 16°C (61°F) at night during December. The daily temperature range is 8°C, meaning moderate variation throughout the day.
Buenos Aires averages 25°C (77°F) for the high and 17°C (63°F) for the low, with a daily range of 8°C. The two cities feel quite similar in terms of temperature.
Both cities are in the Southern Hemisphere, so they share the same seasonal pattern in December.
Cape Town receives approximately 15 mm of rainfall across 3 rain days during December. Rain is occasional, so a light rain jacket should suffice.
Buenos Aires sees 70 mm over 6 rain days. That makes Cape Town the drier option by 3 rain days and 55 mm of total precipitation.
Humidity also differs: Cape Town averages 70% while Buenos Aires sits at 65%. Cape Town will feel muggier, especially at higher temperatures.
Highs of 24°C, lows of 16°C, 3 rain days
Highs of 25°C, lows of 17°C, 6 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 | Cape Town | Buenos Aires | ||
|---|---|---|---|---|
| High | Rain | High | Rain | |
| Jan | 26°C | 3d | 23°C | 6d |
| Feb | 26°C | 2d | 20°C | 5d |
| Mar | 25°C | 3d | 16°C | 4d |
| Apr | 22°C | 5d | 11°C | 3d |
| May | 19°C | 7d | 8°C | 3d |
| Jun | 17°C | 10d | 7°C | 3d |
| Jul | 17°C | 9d | 8°C | 3d |
| Aug | 17°C | 9d | 11°C | 3d |
| Sep | 18°C | 7d | 16°C | 4d |
| Oct | 20°C | 5d | 20°C | 5d |
| Nov | 22°C | 5d | 23°C | 6d |
| Dec | 24°C | 3d | 25°C | 6d |
Cape Town Weather in December
Full forecast, packing tips, and activities
Buenos Aires Weather in December
Full forecast, packing tips, and activities