Beach town in Southern Province, Sri Lanka
Unawatuna weather by month and the best time to visit
When to go to Unawatuna
Dec–Mar has calm seas and clear water. Apr is hot; May–Nov brings rain, rough surf and the swimming beach closes at times.
Unawatuna weather by month
Average daily high, rainfall and conditions.
- Jan28°95 mm
- Feb29°85 mm
- Mar29°124 mm
- Apr29°221 mm
- May29°243 mm
- Jun28°146 mm
- Jul28°116 mm
- Aug28°139 mm
- Sep28°189 mm
- Oct28°280 mm
- Nov28°334 mm
- Dec28°202 mm
Monthly averages
| Month | High | Low | Rain | Humidity | Conditions |
|---|---|---|---|---|---|
| January | 28°C83°F | 26°C78°F | 95 mm | 78% | Pleasant |
| February | 29°C83°F | 26°C79°F | 85 mm | 77% | Pleasant |
| March | 29°C84°F | 27°C80°F | 124 mm | 78% | Pleasant |
| April | 29°C84°F | 28°C82°F | 221 mm | 81% | Rainy |
| May | 29°C84°F | 28°C82°F | 243 mm | 84% | Rainy |
| June | 28°C83°F | 27°C81°F | 146 mm | 84% | Pleasant |
| July | 28°C82°F | 27°C80°F | 116 mm | 85% | Pleasant |
| August | 28°C82°F | 27°C80°F | 139 mm | 85% | Pleasant |
| September | 28°C82°F | 27°C80°F | 189 mm | 84% | Rainy |
| October | 28°C82°F | 27°C80°F | 280 mm | 84% | Rainy |
| November | 28°C82°F | 26°C80°F | 334 mm | 82% | Very wet |
| December | 28°C83°F | 26°C79°F | 202 mm | 80% | Rainy |
Best months across Sri Lanka
| Place | Best months | Warmest month |
|---|---|---|
| Ella | Jan–Mar, Jul–Aug | Aug (27°C) |
| Colombo | Dec–Mar | Mar (31°C) |
| Kandy | Jan–Apr | Apr (30°C) |
| Galle | Dec–Mar | Mar (29°C) |
| Mirissa | Dec–Mar | Mar (30°C) |
| Weligama | Nov–Mar | Mar (30°C) |
| Arugam Bay | May–Sep | Aug (32°C) |
| Sigiriya | Jan–Mar, Jul–Sep | Apr (32°C) |
| Unawatuna | Dec–Mar | Mar (29°C) |
| Hikkaduwa | Dec–Mar | Mar (29°C) |
| Nuwara Eliya | Feb–Apr, Aug | Mar (20°C) |
| Negombo | Dec–Mar | Mar (31°C) |
| Ahangama | Nov–Mar | Mar (30°C) |
| Hiriketiya | Nov–Mar | Mar (30°C) |
| Trincomalee | May–Sep | Aug (32°C) |
| Bentota | Dec–Apr | Mar (30°C) |
| Tangalle | Dec–Apr | Mar (30°C) |
| Jaffna | Feb–Mar, Jul–Aug | Apr (32°C) |
Quick answers
What is the best month to visit Unawatuna?
Dec–Mar. Dec–Mar has calm seas and clear water. Apr is hot; May–Nov brings rain, rough surf and the swimming beach closes at times.
When is the rainy season in Unawatuna?
Rain peaks in November with about 334 mm. Months with 150 mm or more: Apr–May, Sep–Dec.
What is the hottest month in Unawatuna?
March, with average highs of 29°C (84°F).
How cold does Unawatuna get?
The coolest nights are in January, averaging 26°C (78°F).
More about Unawatuna
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Sources
Climate averages are modelled from NASA POWER (MERRA-2) for 2001–2020 at about 50 km resolution, so coasts and valleys can differ a little. Compiled and reviewed by SoloSquare. How we compile and score this. Spotted something out of date? Tell us.