Rangiroa in July

April through November offers the most reliable weather, with trade winds keeping temperatures comfortable and rainfall minimal. This is peak season, so expect higher prices and advance booking requirements. The diving is excellent year-round, but visibility peaks during the dry season months. December through March brings more rain and humidity, plus the occasional tropical depression. But here's the upside: accommodation prices drop significantly, sometimes by 30-40%. The lagoon stays warm for swimming year-round at 26-28°C (79-82°F). Manta ray season runs from December to April, making the wet season worth considering for serious divers. Wind patterns affect lagoon conditions — the southeast trades from May to October create choppier conditions on the ocean side but calmer lagoon waters. For photography, the light is most dramatic during the shoulder months of April-May and October-November. Avoid French school holidays in July-August and December-January when domestic tourism peaks and everything books solid.