Bintan is very close to the Equator. Hence, tropical climate is dominant all through the year with two distinct seasons. IRONMAN 70.3 Bintan is taking place during the dry southwest monsoon (which runs from June to October).
The island has an “insular character” with a constant temperature averaging at 26 °C. The temperatures reported vary between 21 °C and 32 °C. March to early November is the dry season with clear sunny days. Humidity ranges from 61 to 96 percent.
Sea temperature is 29 °C all year around.
On race day sunrise is at 5:59am and sunset at 6:10pm. Remember that sun cream!
Tidal changes are very moderate during the swim phase. Hence, minimal currents and swell are expected.