Cancun vs Sydney

Based on sunshine hours, rain days, comfortable temperatures, and humidity levels, Sydney edges ahead as the better destination in September. Sydney offers 11 hours of daily sunshine with only 6 rain days, while Cancun sees 10 sunshine hours and 24 rain days.

Cancun can feel quite hot at 29°C, so plan for heat. Sydney is also comfortable at 19°C.

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

Cancun reaches an average high of 29°C (84°F) and drops to 26°C (79°F) at night during September. The daily temperature range is 3°C, meaning relatively stable temperatures from day to night.

Sydney averages 19°C (66°F) for the high and 11°C (52°F) for the low, with a daily range of 8°C. There is a notable 10°C gap between the two cities, so expect a very different feel.

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

Cancun receives approximately 205 mm of rainfall across 24 rain days during September. Rain is frequent, so waterproof gear is essential.

Sydney sees 41 mm over 6 rain days. That makes Sydney the drier option by 18 rain days and 164 mm of total precipitation.

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