September is much cooler than the previous two months. The minimum temperature is 19 °C (66 °F) and the maximum temperature is 27 °C (81 °F). During the day, summer clothing is enough, but in the evening wear a long-sleeve shirt as it gets cool. Ultraviolet radiation is very strong, so wear sunscreen with SPF 20 and PA++ to protect your skin.
The weather is clean and clear, so September is the best time to enjoy the autumn scenery.