Mirissa Weather in September

Warm and pleasant, with frequent heavy rain. Average highs of 28°C and lows of 25°C, with around 27 rainy days expected throughout the month.

While September isn't our top-rated month for Mirissa, it has its own appeal — typically lower prices, fewer crowds, and a more local feel.

Average high

28°C

Average low

25°C

Rainy days

27 days

Best months to visit

Year-round

What to do in Mirissa in September

Whatever the weather, Mirissa rewards curious visitors. Here are some of the best ways to spend your time:

Whale watching boat trips departing at dawn (November-April) for blue whales Snorkeling on nearby reefs for tropical fish, rays, and sea turtles Swimming in calm bay waters or surfing nearby Weligama break Eating fresh tuna and cuttlefish caught that morning at beach shacks Watching sunset over the bay from cliff-top restaurants and bars Staying in huts or guesthouses ranging from budget to boutique luxury

What to pack for September

Light layers work well — T-shirts and shorts for the day, a light jacket for evenings. Comfortable walking shoes are a must. Bring a compact umbrella just in case.