Weather in Sri Lanka for August 2025
In general, the average temperature in Sri Lanka at the beginning of August is 28.9 °C. As the month progressed, temperatures tended to slightly decrease, reaching an average of 28.6 °C by the end of August.
Sri Lanka experiences an exceptionally high level of rainfall in August, with more than 24 rainy days on average.
Is August a good time to visit Sri Lanka? check out the best time to travel to Sri Lanka page.
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Sri Lanka in August average weather
| Mon. | Tue. | Wed. | Thu. | Fri. | Sat. | Sun. |
|---|---|---|---|---|---|---|
| 1  30° | 2 29° | 3 29° | ||||
| 4  28° | 5 28° | 6 29° | 7 29° | 8 29° | 9 29° | 10 28° |
| 11 28° | 12 28° | 13 29° | 14 28° | 15 29° | 16 29° | 17 28° |
| 18 28° | 19  28° | 20 28° | 21 28° | 22 28° | 23 29° | 24 29° |
| 25 29° | 26 30° | 27 30° | 28 29° | 29  28° | 30 27° | 31 27° |
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Temperatures trend during August in Sri Lanka
August weather day by day
| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| 1 Aug. | Patchy rain possible | 30° /25° | 3.1 mm | 7 | |
| 2 Aug. | Patchy rain possible | 29° /25° | 6.5 mm | 6 | |
| 3 Aug. | Patchy rain possible | 29° /25° | 5.1 mm | 6 | |
| 4 Aug. | Moderate or heavy rain shower | 28° /25° | 5.2 mm | 6 | |
| 5 Aug. | Moderate or heavy rain shower | 28° /24° | 14.5 mm | 6 | |
| 6 Aug. | Patchy rain possible | 29° /25° | 5.8 mm | 6 | |
| 7 Aug. | Patchy rain possible | 29° /25° | 1.7 mm | 6 | |
| 8 Aug. | Moderate or heavy rain shower | 29° /25° | 5.5 mm | 6 | |
| 9 Aug. | Moderate or heavy rain shower | 29° /25° | 8.2 mm | 6 | |
| 10 Aug. | Patchy rain possible | 28° /25° | 30.8 mm | 6 | |
| 11 Aug. | Patchy rain possible | 28° /25° | 14 mm | 6 | |
| 12 Aug. | Moderate or heavy rain shower | 28° /25° | 17.9 mm | 6 | |
| 13 Aug. | Patchy rain possible | 29° /24° | 22.3 mm | 6 | |
| 14 Aug. | Moderate or heavy rain shower | 28° /24° | 40 mm | 6 | |
| 15 Aug. | Moderate or heavy rain shower | 29° /25° | 5.3 mm | 6 | |
| 16 Aug. | Patchy rain possible | 29° /25° | 15.7 mm | 6 | |
| 17 Aug. | Patchy rain possible | 28° /25° | 18.5 mm | 6 | |
| 18 Aug. | Moderate or heavy rain shower | 28° /25° | 19.6 mm | 6 | |
| 19 Aug. | Heavy rain at times | 28° /25° | 14 mm | 7 | |
| 20 Aug. | Moderate or heavy rain shower | 28° /25° | 19.2 mm | 6 | |
| 21 Aug. | Patchy rain possible | 28° /24° | 46 mm | 7 | |
| 22 Aug. | Patchy rain possible | 28° /24° | 2.5 mm | 6 | |
| 23 Aug. | Moderate or heavy rain shower | 29° /25° | 7.1 mm | 6 | |
| 24 Aug. | Patchy rain possible | 29° /25° | 5.5 mm | 7 | |
| 25 Aug. | Light rain shower | 29° /25° | 8.1 mm | 7 | |
| 26 Aug. | Light rain shower | 30° /26° | 4.2 mm | 7 | |
| 27 Aug. | Light rain shower | 30° /25° | 9.3 mm | 7 | |
| 28 Aug. | Light rain shower | 29° /25° | 23.7 mm | 6 | |
| 29 Aug. | Torrential rain shower | 28° /25° | 50.9 mm | 6 | |
| 30 Aug. | Torrential rain shower | 27° /25° | 59.2 mm | 6 | |
| 31 Aug. | Moderate or heavy rain shower | 27° /24° | 34.8 mm | 6 | |
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Guide for Sri Lanka in August
In August, Sri Lanka experiences varied weather conditions at the beginning and end of the month. At the start of August, the weather in Sri Lanka is generally warm and humid, with temperatures ranging from 27° to 31° in the coastal areas and slightly cooler temperatures in the central highlands.
The coastal regions may also experience occasional showers and thunderstorms, particularly in the afternoons, due to the southwest monsoon.
By the end of August, the weather in Sri Lanka begins to transition, with the southwest monsoon gradually subsiding. The temperatures remain warm, ranging from 26° to 30° in the coastal areas, while the central highlands experience slightly cooler temperatures.
The frequency of rainfall decreases towards the end of the month, leading to more stable and drier conditions across the country.
Overall, August in Sri Lanka offers a mix of warm temperatures, high humidity, and the possibility of occasional showers, especially at the beginning of the month.
Travelers visiting Sri Lanka during this time should be prepared for warm and humid weather, with the chance of intermittent rainfall, particularly in the coastal regions.
Sri Lanka in August - FAQ
What to pack to Sri Lanka in August?
As you prepare for your trip to Sri Lanka in August, it's important to consider the typical weather patterns for the time of year. Below is a carefully tailored packing list to ensure that your time in Sri Lanka, during August, is comfortable and enjoyable, regardless of the weather conditions.
- Clothing
- Lightweight Clothing: T-shirts, blouses, shorts, skirts
- Rain Gear: Lightweight, waterproof clothing
- Footwear
- Waterproof Shoes
- Sandals/Flip-flops: Comfortable for warm climates
- Accessories
- Sunglasses: For sun protection
- Sun Hats: Wide-brimmed hats for sun protection in warm weather
- Umbrellas/Raincoats: For rainy days
- Personal Items
- Sunscreen: High SPF for sunny destinations
- Lip Balm with SPF: To protect against chapped lips
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