The tropical climate of Malaysia allows bird watching to be a year-round activity. Of course, visitors will have to keep the rainy season in mind when planning excursions and take along rain gear or a poncho.

The majorities of caves are limestone and are above ground level. These include Gua Kelam in Perlis, Gua Tempurung and Kundu in Perak, Batu Caves in Selangor and scattered caves around Lake Kenyir in Terengganu and Gua Ikan in Kuala Krai, Kelantan.

Jungle trekking can take an hour or two or as many as you wish. The choice is up to the nature adventurer.

Although many mountains, especially those located in the national parks, have overnightcamping facilities and provide some equipment for rental, it is always wise to plan ahead and make a few enquiries for bookings, weather conditions and other current information.

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Lembing mines in Pahang is a safe though challenging route and anglers may like to pack their rods for some fishing as well. The Endau Rompin area in Johor is a more trying route and a group expedition is strongly recommended since a lone vehicle may encounter difficulties.

Heavy rains in December and March affect currents and visibility at certain sites. Terengganu's Pulau Redang and Pulau Perhentian as well as Pulau Tioman in Pahang are the sites most affected. The atoll of Layang-Layang in Sabah is closed from November to March due to high waves and torrential rain.

Rafting sites in Peninsular Malaysia are easily accessible by car or bus. The Selangor River is reached via Kuala Kubu Bharu.