Colombo weather in September
Monthly temperatures, rain, humidity, what to wear and what to pack — 2024–2025 historical average
Colombo September weather at a glance
In September, Colombo averages 27°C, with typical highs of 29.1°C and lows of 25°C. The historical average is 30 wet days and 84% humidity.
Colombo September temperature & humidity
Colombo September rain & wet days
Pack a light rain jacket, waterproof pouch and quick-dry shoes. Keep an indoor stop available between outdoor activities.
What to wear in Colombo in September
Choose breathable summer clothes and pack sun protection. Rain is frequent at roughly 30 days in the month; pack a rain jacket and water-resistant shoes. High humidity makes quick-dry clothing and a spare top especially useful.
- DaytimeBreathable short sleeves, hat and sunscreen · average high 29.1°C
- Morning & eveningLight layer for air-conditioned rooms · average low 25°C
- FootwearComfortable walking shoes; quick-dry footwear for rainy days.
Packing essentials
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Colombo September sunrise & sunset times
2026 September · Local time (Asia/Colombo)
| Date | Sunrise | Sunset | Daylight |
|---|---|---|---|
| 2026-09-01 | 06:03 | 18:18 | 12h 15m |
| 2026-09-15 | 06:01 | 18:11 | 12h 9m |
| 2026-09-30 | 05:59 | 18:03 | 12h 4m |
For sunset photos, arrive before the listed sunset time. Clouds, mountains and buildings can change when the sun becomes visible or disappears.
Calculated for the city coordinates with daylight saving applied. SunCalc · tz-lookup
Colombo travel updates
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Best months to visit Colombo
Bar height shows our simple weather-comfort score, not a safety rating; colour shows temperature.
September weather by year
Daily weather in 2025
Daily high and low temperatures; blue labels show precipitation
Frequently asked questions
What is Colombo weather like in September?
In September, Colombo averages 27°C, with typical highs of 29.1°C and lows of 25°C. The historical average is 30 wet days and 84% humidity. Our weather-comfort rating for this month is challenging.
Does it rain a lot in Colombo in September?
There are about 30 wet days in September. Pack a rain jacket and water-resistant shoes.
What should I wear in Colombo in September?
Choose breathable summer clothes and pack sun protection. Rain is frequent at roughly 30 days in the month; pack a rain jacket and water-resistant shoes. High humidity makes quick-dry clothing and a spare top especially useful.
What are the best months to visit Colombo?
No months meet the A or B threshold in our temperature-and-precipitation score. Compare the monthly values with your planned activities.
Where can I check Colombo weather in September in real time?
Check local webcams for the view right now and a local weather service for today’s forecast. Monthly temperatures here are historical averages.
What time are sunrise and sunset in Colombo in September?
On 2026-09-15, calculated sunrise is 06:01 and sunset is 18:11 in local time (Asia/Colombo). Times vary by date and terrain.
Colombo weather by month
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Open-Meteo (CC BY 4.0) · 2024–2025 historical data, aggregated and rounded by this site. Not a forecast or long-term climate normal. Calculation method and limitations