What to expect in Sri Lanka in December
December is one of the best times to visit Sri Lanka. Expect 30° / 22°, the biggest crowds of the year and prices close to the yearly average.
Sri Lanka weather in December
Typical conditions in Sri Lanka during December, based on long-run climate normals rather than any single year. Treat it as a planning guide, not a forecast.
| Average high | 30°C 86°F |
|---|---|
| Average low | 22°C 72°F |
| Rainfall | Moderate 50/100 |
| Sea temperature | 28°C 82°F |
| Daylight | 11 h 40 min |
| How it feels | Hot — midday shade matters |
Average highs sit around 30°C with lows near 22°C. Rainfall is moderate; the odd shower is likely.
Crowds & demand
Crowd levels are High for Sri Lanka — the biggest crowds of the year.
Prices & value
This month counts as shoulder season: prices close to the yearly average.
What to pack
Lightweight, breathable clothes, strong sun protection and a refillable bottle — highs near 30°C make midday heat the main constraint.
What it costs
Costs in December sit around the yearly average for Sri Lanka — neither a bargain nor a squeeze. Booking a few weeks out is usually enough. Compared with the most expensive month of the year, you are looking at roughly 8% less.
Who this month suits
- Travellers who want the most reliable weather
- Anyone travelling on a budget
- Families tied to school holidays
Events & what’s on
No major festivals fall in December, so the destination feels like its everyday self.
Sri Lanka in December compared with nearby months
If your dates are flexible by a few weeks, this is what shifting them actually buys you.
| Month | Temp | Crowds | Price | Score |
|---|---|---|---|---|
| October | 29° / 23° | Low | $ | 66 |
| November | 29° / 22° | Low | $ | 63 |
| December · This month | 30° / 22° | High | $$ | 46 |
| January | 30° / 22° | High | $$$ | 46 |
| February | 31° / 22° | High | $$$ | 45 |
These months score higher for Sri Lanka on the same blend of weather, crowds and price. Same destination, better odds.
Or go somewhere else in December
If the destination is negotiable but the month is not, these places are at their best in December.
Figures are climate normals and modelled estimates — a planning guide, not a forecast. We separate fact, estimate and recommendation. Updated October 2026
