Very hot in Oct
33°C average high
avg high · 23° at night
25°C+ on almost every day · often 35°C+
Sri Lanka
Sri Lanka (Colombo) weather in October
Is it warm? Yes. October in Sri Lanka (Colombo) is hot: afternoons average 29°C and nights 24°C. Most days (80%) peak between 28°C and 30°C.
Hot · average high
29°C
25°C or more on almost every day.
- Average low24°overnight
- Sea29°average, 2023–2025
- Rainy days25381 mm in the month
- SkyMostly cloudy83% cloud · 1% clear days
How warm it really gets
Every October afternoon from 2011–2025: 465 days. Most (80%) peaked between 28° and 30°.
October, year by year
The average October high in each year. The warmest, 2025, averaged 30°C; the coolest, 2022, 28°C.
Compared with home
Average October highs. Expect rain on about 25 days (381 mm in a typical month).
- Sri Lanka (Colombo)29°
- London15°
- Dublin14°
- Cork14°
- Manchester14°
- Belfast13°
- Glasgow12°
Warmer in October, not much further
Flying times are estimates from Dublin; Sri Lanka (Colombo) is about 11h 45m.
Hot in Oct
32°C average high
avg high · 20° at night
25°C+ on almost every day
Hot in Oct
30°C average high
avg high · 23° 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