Hot in Aug
31°C average high
avg high · 23° at night
25°C+ on almost every day
Sri Lanka
Sri Lanka (Colombo) weather in August
Is it warm? Yes. August in Sri Lanka (Colombo) is hot: afternoons average 29°C and nights 25°C. Most days (80%) peak between 28°C and 29°C.
Hot · average high
29°C
25°C or more on almost every day.
- Average low25°overnight
- Sea28°average, 2023–2025
- Rainy days25235 mm in the month
- SkyMostly cloudy84% cloud · 0% clear days
How warm it really gets
Every August afternoon from 2011–2025: 465 days. Most (80%) peaked between 28° and 29°.
August, year by year
The average August high in each year. The warmest, 2023, averaged 29°C; the coolest, 2018, 28°C.
Compared with home
Average August highs. Expect rain on about 25 days (235 mm in a typical month).
- Sri Lanka (Colombo)29°
- London22°
- Manchester19°
- Dublin19°
- Cork19°
- Belfast18°
- Glasgow18°
Warmer in August, not much further
Flying times are estimates from Dublin; Sri Lanka (Colombo) is about 11h 45m.
Hot in Aug
31°C average high
avg high · 22° at night
25°C+ on almost every day
Hot in Aug
31°C average high
avg high · 24° at night
25°C+ on almost every day
Air: ERA5 reanalysis via Open-Meteo, 2011–2025. Sea: Copernicus Marine analysis via Open-Meteo, 2023–2025. Rainy day = 2 mm or more. Clear day = average cloud cover of 30% or less. These are averages of past weather, not a forecast. Methodology