Late spring has louder waterfalls; late summer flows are more subdued.

A lot quieter.

In most tropical island chains, late spring (May–June) is still part of the wet season or the tail end of it. Rain is more frequent, streams are full, and waterfalls are thundering. By late summer (August–September), the dry season is in full swing — water flow drops noticeably, and many smaller falls shrink to a trickle or even go dry.

The sound difference is obvious: spring is a roar, summer is a whisper. If you’re hiking to see waterfalls or planning a swim in natural pools, spring gives you the dramatic show. Summer offers more stable weather and easier hiking, but the water features won’t be as impressive.

Adjust your expectations accordingly.