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July is the peak of the Seychelles' south-east monsoon, and on Praslin that means three things at once: the roughest seas of the year, the strongest trade winds - our row carries 30.9 kph - and seaweed in quantity. The forum is precise about where it lands. Grand Anse and Anse Kerlan on Praslin's western side collect it; Cote d'Or is the beach they name as protected from both the wind and the weed, with Beau Vallon the equivalent on Mahe. Water visibility is poor in this season and weak swimmers are told to wear a vest. The compensation is temperature: July is one of the cooler months here, not exceeding 27 or 28C, which our row gives as 25.5C. The record: 24.6C nights, 13.6 precipitation days carrying 70.6mm and a 26.7C sea.

Seychelles forum threads are consistent that January is the rainiest month of the year, and Beau Vallon specifically - on the northern side of Mahé - tends to see more rain and cloud than the island's southern coast, thanks to the northwest trade winds pushing cloud masses in this time of year. Despite that, posters were clear this isn't monsoon-style all-day rain: a typical day mixes real sunshine with rain showers, and most visitors get at least a few solid beach hours daily even in the wettest stretch. The general advice: expect a genuine mix of sun, cloud and rain rather than betting on either extreme.

Forum posters describe mid-March visits as mainly sunny and hot with the occasional full rain day mixed in - Seychelles weather is repeatedly called genuinely unpredictable, with posters noting the islands have real micro-climates that can make conditions differ from one side of Mahe to the other, so no forecast covers every variation. The specific seasonal issue for Beau Vallon in March is dead seaweed washing up on the beach, a recurring nuisance posters say clears up by late April into May, when the ocean also turns calmer with better visibility as temperatures and humidity start to ease. For travelers prioritizing clean sand and clear water over slightly warmer conditions, posters suggest that later window is the better trade-off.