Palau has a tropical climate with an annual mean temperature of 82 °F (28 °C). Rainfall is heavy throughout the year, averaging 150 inches (3,800 mm). The average humidity is 82% and although rain falls more frequently between July and October, there is still much sunshine. Typhoons are rare, as Palau is outside the main typhoon zone. The most recent typhoon that struck Palau was Typhoon Haiyan during the 2013 Pacific typhoon season. A mandatory evacuation was issued for Kayangel. A storm surge damaged several houses. Despite residents' refusal to evacuate safely, no fatalities or major injuries were reported.