Seychelles is close to the equator so warm weather is prominent year-round, though often overly humid. The average temperature is 84°F (29°C) and the sea breeze not much less. Despite this heat, the islands are usually breezy, which tempers conditions on the beaches somewhat. The best time to visit is generally May/June through September/October.
Being tropical—meaning warm, cool and dry followed by hot and wet as opposed to defined seasons—the Seychelles can be visited at any time to enjoy the sun. Just avoid the November-March northwest monsoon to be sure to miss the worst of the rain. The drier, cooler southeast monsoon (May through September) is more pleasant and thus high season. April and October are shoulder months and less predictable.
Luckily, the Seychelles does not endure hurricanes, with the worst weather coming by way of tropical storms around January/February. Even at this time—which is the warmest part of the year—tropical storms are not the norm, with daily showers being par for the course. The benefit of this set-up, which typically happens in the late afternoon is that it cools the air considerably.
Evenings are cooler in the Seychelles, with lower humidity and typically calming breezes, but the sun remains powerful year-round. Tourists should always pack high-numbered sun block, especially if they have kids. It is widely available for purchase, although is more expensive than back home. Lightweight, cotton clothing is your best bet at any time, but consider a light coat if visiting November-March.
Best Time to Visit Seychelles
The weather is driest and the most pleasant between May and October and this is when most people visit. Be aware, however, that hotels are full to capacity and more expensive. Although there is more chance of rain during the northwest monsoon (November through March), many North Americans still visit at this time to escape freezing winters making it also quite busy during the winter period with not much deviation in hotel prices. Cheaper rates can often be found February through April.
The best times for scuba diving are April/May and October/November, although visibility is good year-round, as is water temperature. For marlin fishing, the best catches are found October through December.