Weather in Seychelles in August

How August compares

August is the 12th warmest month of the year in Seychelles and ranks 121st of 134 destinations we compare for August - see where else is hot in August. Against London's average high of 21.4°C in August, Seychelles is 4.3°C warmer by day and 11.2°C warmer at night.

Daytime and night-time in August

The typical August day in Seychelles peaks at 25.7°C, but that is an average: the warmest 10% of days reach 26.4°C or more. About 92% of days top 25°C. Nights average 24.7°C; one night in ten drops to 24.1°C or lower, so pack a layer for evenings. Between 1991 and 2020 the hottest August day here reached 27.3°C (1997-08-30) and the coldest night 23.0°C (1992-08-31).

Rain in August

Wet (more than 8 rainy days): about 13 days with 1 mm or more, 62 mm in total. Year to year it varies a lot - the wettest August was 1999 with 199 mm, the driest 2002 with 15 mm. Humidity averages 83%.

Sea temperature in August

The sea averages 26.2°C - warm enough to swim (22°c+). Depending on the year it ranges from 25.4°C to 27.0°C. For the warmest sea here, come in April (29.8°C).

Sunshine and daylight

Around 3.7 hours of sunshine a day (estimated from cloud cover), 11.8 hours of daylight: the sun rises about 06:24 and sets about 18:22 local time in mid-August. Average cloud cover is 68%.

Is August a good time to visit Seychelles?

It is a reasonable choice: hot days but expect showers. The best months for Seychelles on our scoring are July, February, April; months averaging 25°C or more: Jan, Feb, Mar, Apr, May, Jun, Jul, Aug, Sep, Oct, Nov, Dec.

Warm days, humid evenings

August is Seychelles' coolest month by average daytime temperature, though that does not mean cool weather in practical terms. Nights average 24.7°C, so there is little relief from the warmth after dark. With humidity at 83%, breathable clothing will be more useful than heavy layers, and a room with cooling is worth prioritising if you struggle to sleep in muggy conditions. Days reach 25°C on 92% of occasions, while reaching 30°C is not typical of the figures here. This suits travellers who dislike very high temperatures, but humidity can still make walking uncomfortable. Keep plans flexible and take breaks when the warmth feels tiring.

Expect rain breaks, not constant sunshine

The main compromise is the balance between daylight and sunshine. August has about 3.7 hours of sunshine within 11.8 hours of daylight, so do not picture clear skies throughout the day. Rain on about 13 days makes a lightweight waterproof and somewhere dry to keep your belongings sensible additions to your bag. That figure does not tell you how long each wet spell lasts, so it is not a reason to write off whole days either. Leave room to rearrange outdoor plans rather than tying every activity to a fixed time. August is less convincing if your main aim is uninterrupted sunbathing.

Good swimming temperatures, with a long journey to weigh up

The sea is a stronger reason to choose August than the sunshine. At 26.2°C on average, it is warm enough for swimming rather than a bracing dip, with a year-to-year range of 25°C to 27°C. Water temperature alone cannot tell you about conditions on the day, so check local advice before entering the sea. From London, the flight takes about 10 h 54 min, making this a long-haul choice for warmth rather than exceptional heat. It makes most sense if swimming and warm evenings matter more to you than clear skies, and you are comfortable adapting plans around wet weather.