Since Ecuador is home to such a variety of ecosystems, it can be a challenge dressing for the weather! In Quito, nights are often much cooler than day time temperatures, same for other Andean towns. It means you’re going from shorts and sandals during the day, to sweaters or hoodies at night. Temperatures on the coast are frequently 85+F or 30+C. While the coast has a drier climate, the Amazon is a rainforest – so you know what to expect there!
In Quito, where most visitors spend time, the dry months are June, July and August. The rest of the year, it can rain 10-15 days / month, but usually just in short bursts. Temperature-wise, Quito is slightly cooler during those same months and averages highs of 66F / 19C and lows of 60F / 10C throughout the year.