Sri Lanka is a teardrop island off the southern tip of India, small enough to circle by car in a long week but varied enough to feel like several countries: tea-covered highlands, wildlife-rich national parks, ancient Buddhist cities, and beach coasts on three sides. The complication is that Sri Lanka has two monsoons hitting opposite coasts at different times — which means there is always a 'good' coast and always a 'bad' coast.
December to March is the best window for the south and west coasts (Galle, Mirissa, Bentota). May to September is best for the east coast (Trincomalee, Arugam Bay). The cultural triangle and highlands are visitable year-round.
December through March is the high season for the south and west: 30°C days, low rain, calm sea, and the surf and whale-watching seasons in Mirissa. The east coast is in its monsoon — wet and rough. The hill country (Ella, Nuwara Eliya) is cool, often misty, and at its most photogenic.
April is the inter-monsoon — generally hot and dry across the island, with the new-year festivals (Sinhala and Tamil) in mid-month. Sea temperatures peak. The first signs of the southwest monsoon arrive late in the month.
May to September is the southwest monsoon — heavy rain on the south and west coasts, calm sea on the east. This is peak season for the east coast (Arugam Bay surf, Trincomalee diving) and the cultural triangle stays mostly dry. The hill country can be wet.
October is the second inter-monsoon — short heavy storms across the island. November sees the northeast monsoon arrive, ending the east coast season and starting the dry season for the south and west by mid-month.
Two weeks is the classic loop — cultural triangle, hill country, south coast — with time to slow down. One week forces hard choices: usually cultural triangle plus hill country, or hill country plus south coast.
Yes — the civil war ended in 2009 and the country has been stable. The 2022 economic crisis caused fuel shortages but tourism has recovered well.
December to April off Mirissa for blue whales; May to September off Trincomalee for blue and sperm whales. Boats leave at dawn.
Sri Lankan food is significantly spicier than most Indian food. Most restaurants will moderate spice on request; learn to say 'mild' or specify 'no chili'. Hoppers (bowl-shaped pancakes) are the best mild starting point.