SeasonMapBentota weather in December
Sri Lanka
December in Bentota: sweltering, soaked, with muggy air — fine if you can take 20 rainy days.
#6 of 12 months in Bentota · #579 of 1383 destinations to visit in December · comfort 75/100 (tier B)
Updated September 2026 · climate normals from ERA5 reanalysis
Traveller notes on Bentota in December
No notes yet. Open Bentota on the map to add the first one.
Bentota climate normals — December
| Daytime high | 29°C / 84°F | 🔥 sweltering |
|---|---|---|
| Nighttime low | 24°C / 75°F | |
| Feels like (high) | 35°C / 95°F | |
| Sea temperature | 29°C / 84°F | ♨️ bath-warm |
| Rainfall | 206 mm / 8.1 in | ⛈ soaked |
| Rainy days | 20 days | |
| Humidity | 83% | 💦 very humid |
| Dew point | 23°C / 73°F | |
| Sunshine | 9.3 h/day | |
| Daylight | 11.8 h | |
| Wind | 8 km/h / 5 mph | |
| Air quality (US AQI) | 73 | 🙂 moderate |
Monthly averages from ERA5 reanalysis. AQI is the mean US Air Quality Index for the month.
Crowds in Bentota in December
How busy the place itself is — school and mass holidays, the months an editor tagged, and how sought-after the weather makes them. Never part of the comfort score.
Peak crowdsSouthwest coast beach season, Year-end break in Sri Lanka, school holidays in 5 of the markets that fill it(estimated)
Peak crowdsBusyShoulder seasonQuiet
Best months for Bentota's weather
Ranked by this destination's own climate comfort score across the year — a different thing from how busy it gets (see Crowds above).
Fair weatherBentota's weather peaks January–March, best around February.
Best weatherFair weatherToughest weather
What's on in Bentota in December
Recurring seasonal events, natural spectacles, closures and holidays — curated and sourced.
- Rule
Poya days
1 Jan – 31 DecClosuresEvery full moon is a civil holiday and the sale of alcohol is prohibited islandwide, hotel bars included. There are thirteen or fourteen a year, so one will land on most trips. Source ↗
- Season
Southwest coast beach season
1 Dec – 31 Mar · usuallyDry seasonCrowdedBook earlyThe rains ease and the sea flattens enough for the river-mouth watersports operators to run every day. This is when the resort strip is full and priced accordingly, with the peak over Christmas and New Year.
Nearby, and something's on
Within 300 km of Bentota — a day trip or a short hop — with something on this month. Never part of the comfort score.
Where is Bentota?
Bentota in December — FAQ
- Is December a good time to visit Bentota?
- December in Bentota: sweltering, soaked, with muggy air — fine if you can take 20 rainy days. It ranks #6 of 12 months for Bentota on SeasonMap's comfort score (75/100).
- What is the weather like in Bentota in December?
- In December, Bentota averages a daily high of 29°C and a low of 23.9°C, with about 205.8 mm of rain over roughly 19.6 rainy days.
- What is the air quality in Bentota in December?
- Bentota has a mean US Air Quality Index of about 73 in December.
Other months in Bentota
Compare Bentota in December
Warmer or cooler than Bentota in December
Similar destinations in South Asia — December
Within 300 km: Colombo's Blue whales off Mirissa around 1 Nov – 15 Apr, and Mirissa's Blue whale season on 1 Nov – 15 Apr.