Malaysia Weather, climate and geography
Malaysia weather benefits from a tropical climate with high temperatures and high humidty throughout the year. Daytime temperatures rise above 30°C (86°F) year-round and night-time temperatures rarely drop below 20°C (68°F).
The best time for beach holidays or scuba-diving will depend on which part of Malaysia you intend to visit. The country is affected by the south-west monsoon from May to September and the north-east monsoon from November to March, and different parts of the country have their dry and wet seasons at different times of year.
On the west coast, the wettest months are May to October, while on the east coast, the wettest months are September to December. Kuala Lumpur is wettest from March to April and September to November, while Malaysian Borneo sees its heaviest rainfall between November and February. The best time to visit for dry weather is June and July on the east coast, January and February on the west coast, April in Sabah and June to July in Sarawak.
Lightweight, loose-fitting clothes are sensible at any time of year. To avoid offending local sensibilities, female travellers should wear clothes that cover the legs and upper arms. Note that shorts are rarely worn by adults, except at the beach. Full-length trousers will create a better impression. Because of the rainfall patterns and the vagaries of Malaysia weather, always carry an umbrella.