Operator Checklist

• If you want the highest odds of consistent dive days, prioritize Sabah and build around Semporna plus a few days in Kota Kinabalu and TARP as an easy warm-up. If your trip is beach-first, plan Peninsular east coast islands between roughly March and October and expect many places to scale back in the rougher monsoon months. For a December escape with shorter transfers, look at Langkawi and Payar Marine Park, then add Sabah if you want more serious diving.

Conditions Fallback

• If you want the highest odds of consistent dive days, prioritize Sabah and build around Semporna plus a few days in Kota Kinabalu and TARP as an easy warm-up. If your trip is beach-first, plan Peninsular east coast islands between roughly March and October and expect many places to scale back in the rougher monsoon months. For a December escape with shorter transfers, look at Langkawi and Payar Marine Park, then add Sabah if you want more serious diving.