Sydney vs Cancun

Based on sunshine hours, rain days, comfortable temperatures, and humidity levels, Sydney edges ahead as the better destination in December. Sydney offers 11 hours of daily sunshine with only 9 rain days, while Cancun sees 10 sunshine hours and 11 rain days.

Sydney sits in the comfortable travel range at 24°C. Cancun is also comfortable at 26°C.

For travelers who prioritize dry weather, Sydney is the stronger choice in December. Sydney receives 1 more hour of sunshine per day, which matters for sightseeing and outdoor activities.

Sydney reaches an average high of 24°C (75°F) and drops to 18°C (64°F) at night during December. The daily temperature range is 6°C, meaning relatively stable temperatures from day to night.

Cancun averages 26°C (79°F) for the high and 23°C (73°F) for the low, with a daily range of 3°C. The 2°C difference is noticeable but not dramatic.

Sydney is in the Southern Hemisphere while Cancun is in the Northern Hemisphere. This means they experience opposite seasons, which explains any large temperature difference.

Sydney receives approximately 55 mm of rainfall across 9 rain days during December. You can expect rain roughly every other day.

Cancun sees 53 mm over 11 rain days. That makes Sydney the drier option by 2 rain days and 2 mm of total precipitation.

Humidity also differs: Sydney averages 70% while Cancun sits at 78%. Cancun will feel muggier, especially at higher temperatures.