Sri Lanka Weather in August
On the west and south coast it is warm and rainy, with highs of 83°F (28°C) and the sea at 82°F (28°C). On the east coast it is hot and mostly dry, with highs of 93°F (34°C) and the sea at 84°F (29°C). In the hill country it is warm and showery, with highs of 81°F (27°C). Rating: Good — most comfortable on the east coast.
Goodcomfortable overall, but days are very hot, on the east coast
Climate normals checked September 29, 2026 · Source: Open-Meteo (ERA5) · How we calculate
Sri Lanka weather in August by region
| Region | Day high | Night low | Sea | Rainy days | Rainfall | Humidity |
|---|---|---|---|---|---|---|
| West & south coastBentota, Hikkaduwa, Galle | 83°F (28°C) | 77°F (25°C) | 82°F (28°C) | 29 | 10.3 in (262 mm) | 86% |
| East coastTrincomalee, Pasikudah | 93°F (34°C) | 79°F (26°C) | 84°F (29°C) | 12 | 2.8 in (70 mm) | 69% |
| Hill countryKandy, Nuwara Eliya | 81°F (27°C) | 70°F (21°C) | — | 21 | 5.4 in (138 mm) | 83% |
Flight time from the US
We're still checking flight times from JFK, LAX and SFO to Sri Lanka. This block will show them once our flight data is ready.
Other months in Sri Lanka
- Jan85°FJanuary: Good
- Feb86°FFebruary: Good
- Mar87°FMarch: Excellent
- Apr91°FApril: Excellent
- May92°FMay: Mixed
- Jun94°FJune: Good
- Jul94°FJuly: Good
- Aug93°FAugust: Good
- Sep92°FSeptember: Mixed
- Oct88°FOctober: Mixed
- Nov84°FNovember: Off-season
- Dec84°FDecember: Mixed
Excellent Good Mixed Off-season
Sri Lanka in August: FAQ
What's the weather like in Sri Lanka in August?
On the west and south coast it is warm and rainy, with highs of 83°F (28°C) and the sea at 82°F (28°C). On the east coast it is hot and mostly dry, with highs of 93°F (34°C) and the sea at 84°F (29°C). In the hill country it is warm and showery, with highs of 81°F (27°C).
Is August a good time to visit Sri Lanka?
We rate August as Good. Yes — most comfortable on the east coast, with highs of 93°F (34°C) and about 2.8 in (70 mm) of rain.
Is August rainy season in Sri Lanka?
Driest on the east coast, with about 2.8 in (70 mm) of rain and 12 rainy days. On the west and south coast: 10.3 in (262 mm).
How does Sri Lanka in August compare to September?
September rates Mixed, August rates Good. In the best region, August brings highs of 93°F (34°C) and 2.8 in (70 mm) of rain; September brings 92°F (34°C) and 3.9 in (100 mm).
Where the data comes from
- Air temperature, rainfall, humidity — ERA5 reanalysis (Copernicus / ECMWF) via Open-Meteo, averaged over 2015–2024. Each region uses one point: the resort or city in its caption.
- Sea temperature — Open-Meteo Marine, average sea surface temperature for 2023–2026 (the source has no longer record yet).
- Rainy days — days with at least 1 mm (0.04 in) of rain. Reanalysis picks up light rain more often than weather stations, so treat this as an upper bound.
- Month rating — one rule for every destination, based on three factors: day highs (ideal 75–91°F / 24–33°C), monthly rainfall (ideal under 80 mm / 3.1 in) and, for beach regions, sea temperature (ideal 77°F / 25°C or warmer). All ideal means Excellent; one slightly weaker factor means Good. Mixed means heavy rain (150 mm / 5.9 in or more), highs above 97°F (36°C) or a sea below 70°F (21°C). Off-season means highs of 100°F (38°C) or more, cold below 54°F (12°C), over 350 mm (13.8 in) of rain, or several problems at once. A country's rating follows its best region, so check the regional table.
Checked September 29, 2026. Climate normals are refreshed yearly and the notes every 90 days. These are long-term averages, not a forecast: any given year can differ.
