December is the start of Sri Lanka’s peak tourism season. The west and south coasts are dry and warm, the Cultural Triangle is at its best, whale watching at Mirissa is in full swing, and the south coast surf season is well established. It is also the most expensive month alongside January, particularly during the Christmas and New Year period. Book early and expect crowds at popular sites.
West Coast Dry Season in Full: South Coast and Hill Country at Their Best
The west and south coasts - Colombo, Bentota, Hikkaduwa, Unawatuna, Galle, and Mirissa - enjoy dry, sunny conditions with daytime temperatures of 28–32°C. Humidity drops to around 70%, and rainfall is minimal. Expect 8–9 hours of sunshine daily. Sea conditions are calm, and swimming is safe at most south coast beaches.
The northeast monsoon is active on the east coast. Trincomalee, Batticaloa, and Arugam Bay receive regular rain and rough seas. The east coast is firmly closed for tourism in December. Do not plan east coast beach days.
The Hill Country is cooler and drier than the October–November inter-monsoon period, though occasional showers still occur. Nuwara Eliya daytime temperatures sit around 15–20°C, dropping to 8–12°C at night. Ella is slightly warmer. December is a good month for the Kandy-to-Ella train - visibility is generally clear, and the tea plantations are in excellent condition.
Christmas in Negombo and the South Coast New Year Countdown
Christmas is widely celebrated in Sri Lanka, which has a significant Catholic community concentrated along the west coast, particularly in Negombo. Churches hold midnight masses on Christmas Eve, and Negombo’s streets are decorated with lights and nativity scenes. Colombo’s shopping districts put up Christmas displays. Hotels across the south coast host Christmas dinners and events - these are popular with international visitors and should be reserved ahead.
December’s full moon Poya day is Unduvap Poya, which commemorates the arrival of Sangamitta Theri (daughter of Emperor Ashoka) bringing a sapling of the sacred Bodhi tree to Anuradhapura. The Jaya Sri Maha Bodhi tree in Anuradhapura - grown from that original cutting and considered the oldest historically documented tree in the world - is the focus of ceremonies. Anuradhapura is worth visiting around Unduvap Poya for the temple atmosphere.
Blue Whale Season at Mirissa: Strong Sighting Rates Through December
December is one of the best months for whale watching from Mirissa. Blue whales and sperm whales are regularly spotted 10–15 km offshore. Boats depart early morning (6:30–7:00am) and the trip lasts 3–5 hours. Success rates are high - operators report sightings on the majority of trips. Spinner dolphins appear on nearly every outing.
Book whale watching trips 2–3 days ahead during the Christmas–New Year period, as popular operators fill up. See our best tours in Sri Lanka guide, then Book a December tour in Sri Lanka early - peak season guided activities sell out faster than accommodation. Choose operators with a good safety record and responsible approach to wildlife distance - the better companies maintain a respectful distance from the whales rather than chasing them.
South Coast Surf in Full Swing: Hikkaduwa, Weligama, and Mirissa All Open
The south coast surf season is in strong form. Hikkaduwa delivers consistent reef breaks for intermediate surfers, while Weligama offers forgiving waves ideal for beginners and surf schools. Mirissa and Unawatuna provide additional options. Water temperature is 27–28°C - no wetsuit needed.
Arugam Bay on the east coast is closed for the season. The east coast surf window runs April through October.
Yala Entering Prime Leopard Season: Game Drives Improving Through December
Yala National Park is entering its prime wildlife season. As the dry period progresses, water sources shrink and animals concentrate around the remaining tanks and waterholes. Leopard sighting probability increases through December and peaks in February–May. Yala holds the highest density of leopards per square kilometre of any park in the world. December mornings are the best time for game drives - start at gate opening (6:00am) and spend the first two hours in Block 1.
Udawalawe National Park delivers reliable elephant sightings year-round, and December is no exception. The park is less crowded than Yala and offers a more relaxed safari experience.
Bundala National Park hosts large populations of migratory birds, including greater flamingos. December is an excellent month for birdwatching at Bundala and the Kumana wetlands.
Hill Country Clearing After Monsoon: Best Views Return at Ella and Lipton’s Seat
December is one of the better months for the Hill Country. The inter-monsoon rains have largely passed, and clearer skies return to Ella and Nuwara Eliya. The tea estates are in good condition for visits, and the famous viewpoints - Lipton’s Seat, Little Adam’s Peak, Ella Rock - offer their best visibility of the season. Nuwara Eliya gets cold at night (8–12°C), so pack warm layers if you are staying in the hills.
Most Expensive Month: Christmas–New Year Window Books Out Months Ahead
December is the most expensive month for Sri Lanka tourism, matched only by January. Hotel rates on the south coast reach their annual peak, often 50–100% above low-season prices. The Christmas–New Year window (roughly December 22 to January 5) is the single most expensive and crowded period. Galle Fort boutique hotels, Mirissa beach properties, and popular Ella guesthouses book out months in advance.
Budget options exist in the Cultural Triangle (Sigiriya, Dambulla, Polonnaruwa), where prices are lower and crowds thinner than on the coast. Kandy is also more affordable than the southern beach strip. For south coast accommodation, booking 3–4 months ahead is essential for the holiday period.
Flights to Colombo are at their annual peak in December. Book as early as possible for the best fares.
Where to Focus in December
The full classic circuit is at its best. Colombo (one or two nights), Cultural Triangle (Sigiriya, Dambulla), Kandy (Temple of the Tooth), train to Ella through the tea country, then south to Mirissa (whale watching) and Galle (fort, beaches). Two weeks covers it comfortably. If time is shorter, prioritise the south coast and Cultural Triangle - these are the highlights that benefit most from December’s dry conditions.
See the best time to visit Sri Lanka for a full seasonal comparison.
New Year’s Eve and Christmas on the South Coast
Christmas and New Year are peak events on the south coast. Galle Fort fills with international visitors and several of the boutique hotels within the fort walls run ticketed Christmas dinners and New Year’s Eve parties - these sell out in October and November. Unawatuna beach is the most relaxed option for NYE: bars and beach restaurants put on informal gatherings, with fireworks visible from the bay around midnight.
Mirissa gets lively over the Christmas–New Year period. The beach strip of bars and restaurants stays open late, and New Year’s Eve sees fireworks launched from the point. It is loud and fun rather than sophisticated - good if that suits you, worth knowing if it does not.
Colombo NYE centres on the Colombo City area, with large fireworks displays visible from the Galle Face Green promenade. Hotels on Galle Face - such as the Galle Face Hotel and Cinnamon Grand - host formal dinner events. The Beira Lake waterfront is also popular. In practice, most international visitors on New Year’s Eve are south of Colombo, on the coast.
Negombo, a historically Catholic fishing town 30km north of the airport, holds Christmas Eve masses at St Mary’s Church and the streets are decorated with lights. If you are flying in on December 23–24 and want to experience a Sri Lankan Christmas before heading south, Negombo is the most straightforward stop.
Cultural Triangle in December
Sigiriya, Dambulla, Polonnaruwa, and Anuradhapura are all in excellent condition in December. The wet-season humidity has dropped and the reservoir-fed plains around Anuradhapura are green without being waterlogged. The Sigiriya Lion Rock frescoes are best viewed early morning before the sun hits them directly - the light is better and the approach path is cooler. Gates open at 7:00am; aim to arrive by 7:30am.
Dambulla Cave Temple is best visited early morning or late afternoon when tour group numbers thin. The Kandy to Dambulla road (A9) is straightforward by bus (around LKR 200) or tuk-tuk for the short leg from Dambulla town. Polonnaruwa’s ruins are best explored by bicycle - rental available from guesthouses near the museum for approximately LKR 500 per day.
Anuradhapura is one of the most atmospheric sites in Sri Lanka in December, particularly around Unduvap Poya when the Jaya Sri Maha Bodhi tree is the focus of ceremonies. The ancient city covers a large area - hire a tuk-tuk driver for the day (LKR 2,000–3,000) to cover the main ruins efficiently.
Plan Your Trip
December runs the classic circuit at peak: one night in Colombo, Sigiriya (gates open 7am - arrive early to beat tour groups and the heat), Dambulla Cave Temple, train from Kandy through the tea country to Ella, then south to Mirissa for whale watching (blue whale sightings on the majority of trips) and Galle Fort. Book whale watching 2–3 days ahead over the Christmas–New Year period. If Unduvap Poya falls during your trip, Anuradhapura’s Jaya Sri Maha Bodhi ceremonies are worth the detour north. For NYE, Unawatuna beach is the most relaxed option; Galle Fort boutique hotel parties sell out in October - book now if that’s the goal. Yala leopard game drives improve through December; morning entry at 6am in Block 1 gives the best probability. South coast accommodation for Christmas–New Year must be reserved 3–4 months ahead.
Flights to Sri Lanka - peak season fares, book early. Travel insurance before you book. Get an eSIM for arrival. Book accommodation on Booking.com - Mirissa and Galle Fort fill for Christmas weeks months in advance.