How do the monsoons work in Sri Lanka?
Sri Lanka has two monsoons, so there is always a dry coast. The south-west monsoon brings rain to the south and west coasts from about May to August, easing in September, while the east is dry. The north-east monsoon brings rain to the east and north from about November to January, while the south and west are dry.
October and November sit between monsoons: showers can fall anywhere, usually in the afternoon. Mornings are often clear, so plan outdoor sights early.
When is the south and west coast at its best?
December to April: the south and west coasts and the hill country are at their best. Galle, Mirissa, Unawatuna, Ella and Kandy all shine, with calm sea from Galle to Tangalle in January and whales off Mirissa until April.
December opens the peak season, so book beds ahead. Afternoon showers start late in April, and from May to August the sea is rough and rain falls most afternoons; swim only where the flag is green.
When is the east coast dry?
May to September: the east coast is dry and calm. Go to Arugam Bay for surf, Trincomalee and Nilaveli for beaches, and Pasikuda for swimming.
The dry season opens in March, when Trincomalee and Jaffna are dry and quiet. Arugam Bay’s surf season starts in April and peaks around July, Pigeon Island is good for snorkelling in the hot, dry months, and September is the last full dry month before the north-east rains settle in during November.
What is the weather like in the hill country and the cultural triangle?
The hill country is at its best from December to April, with cooler air and clearer mornings. Mist and showers can arrive at any time of year around Nuwara Eliya and Horton Plains, so start walks early and pack a rain jacket.
In the middle of the year, while the coast is wet, the hills above Kandy are often drier. Kandy’s Esala Perahera, the island’s best-known procession, falls around August; its dates follow the lunar calendar, so check each year.
The cultural triangle (Sigiriya, Dambulla, Polonnaruwa, Anuradhapura) is hot and mostly dry all year. Start early: by midday the rock and the stone paths are very hot.
How should I plan my trip around the weather?
Pick your coast by month: the south and west from December to April, the east from May to September. In October and November, plan sights for the morning and keep afternoons flexible.
Rain often comes as a heavy afternoon shower rather than a grey day, so a trip in the wetter months can still work, especially inland. The Srilor monsoon board shows which coast is dry in any month.
Questions people ask
Is there a bad time to visit Sri Lanka?
Not really, because one coast is always dry. Match your beach to the month: the south and west from December to April, the east from May to September.
When is monsoon season in Sri Lanka?
There are two. The south-west monsoon wets the south and west coasts from about May to August, easing in September, and the north-east monsoon brings rain to the east and north from about November to January.
Does it rain in Sri Lanka’s cultural triangle?
Less than elsewhere. Sigiriya, Dambulla, Polonnaruwa and Anuradhapura are hot and mostly dry all year, though showers are possible between the monsoons in October and November.
Can I visit Sri Lanka in October or November?
Yes. Showers can fall anywhere, usually in the afternoon, and mornings are often clear. The south coast’s dry season opens in late November.