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September is one of the easiest months to be in Fiji. The wet season has finished, the humidity drops and the water is clear. If you are planning a trip to the Yasawa Islands in September, here is what to expect from the weather, the water temperature, the wildlife and the small details that make the week more comfortable.
September sits in the middle of the dry season. Days in the Yasawas are usually sunny, with highs around 28 to 30 degrees Celsius, and the southeast trade winds keep the air fresh. Nights are cooler, often around 20 to 22 degrees, so you will want a light layer in the evening. Rain is possible, but it tends to come as a short shower rather than a day of grey. Humidity is far lower than in the summer months, which makes hiking up to a viewpoint or sitting through a village visit much more pleasant.
The trade winds can make for some choppy water on the open channels, and the boat transfers between islands may feel bumpy on a windy day. If you are prone to seasickness, take a tablet before you board the Yasawa Flyer. Our Yasawa Flyer guide explains how the catamaran runs and how island hopping works.
The sea around the Yasawas sits at about 25 to 27 degrees Celsius in September. That is warm enough to snorkel for an hour in just a rash guard, though a thin 2 millimetre top is nice if you get cold easily. Visibility is usually good, often 20 metres or more on the outer reefs, because there is less rain run-off than in the wet season. The best coral gardens are in the shallows around the islands, and the water is often calm in the morning before the wind picks up.
The big draw in this part of Fiji is the manta rays. They feed in the channels between the islands from roughly May to October, so September falls right in the window, and the chance of a morning with mantas below you is good. Reef sharks, turtles, eagle rays and plenty of reef fish are regular sights on any snorkel. Our post on manta ray season in Fiji has more detail on timing and locations.
September also works for the shark dive. Bull sharks gather at the dive sites year-round, and the dry season gives clean water for it. If you are not certified, you can join an introductory dive or watch from the surface. For the full picture, read the shark dive in Fiji without certification. If you are still deciding whether to snorkel or dive at all, Fiji snorkeling vs scuba is a good place to start.
Pack light, because space on the island boats is limited. A few rash guards, board shorts or swimsuits, a sarong, a light long-sleeve shirt for the sun and a thin fleece or hoodie for the evenings is enough. Bring reef-safe sunscreen, a hat, and a dry bag for boat rides. Sandals are fine on the islands, and a pair of reef shoes helps on rocky entries. A waterproof phone case or small action camera lets you take pictures without worrying about salt water. Keep some cash in Fijian dollars for village gifts and small purchases.
Do not forget the cultural side. When you visit a village you will be asked to dress modestly, with shoulders and knees covered, and to remove your hat. Our guide to the Yasawa Islands explains what to expect from village visits and the kava ceremony.
Compared with the peak of summer, September is calmer, drier and cheaper. Compared with the wet season, you give up nothing in comfort. The only real trade-off is the wind, which can make the sea less flat than in the early months of the dry season. For a wider look at the calendar, our post on the best time to visit Fiji for diving, sharks and manta rays covers the whole year.
Our Yasawa Paradise expedition runs from 25 September to 1 October 2027, with a maximum of eight guests. It covers six nights across three Yasawa islands with all meals, the Yasawa Flyer transfers, a manta snorkel, a bull shark dive option, a village visit with a kava ceremony, and photos and videos of the group. It can also be combined with our Tonga expedition, which ends the day before. Have a look at the Yasawa Paradise expedition page for the full plan and current availability.
