How popular is this flight route?

Flights from San Juan to Cancun have been viewed 182 times in the past calendar month.

Is San Juan weather warmer or cooler than Cancun?

Expect the weather to be around 90 °F on average in August. As the temperature peaks, try to get your plans done early, as flight price and availability will have an impact on your travels. The climate in Cancun is generally the same as in San Juan.