If it helps, cooler months in the Phils is between Dec and Feb. But it does occasionally rain in the forest. This is follwed by high light/temp and drier spell from March to May. Rainy season starts in June. In higher elevations, the temp can go lower by 10 to 20 F, so 50F is possible. A lot of tropical fruits follow this cycle. They flower in April and develop their fruits by May when rain starts again.
This was before but global warming has change this climate. Now these fruit trees do not know when to flower. Some of them flowers during fall now. Some just don't.