Sri Lanka Colombo Weather in August — Climate Guide
August in Colombo is moderate
August is moderate for Colombo.
August is one of the drier monsoon months in Colombo, with fewer showers and more sunshine than the May-June peak. It averages a warm, humid 30°C/26°C with moderate rainfall (about 110mm).
The headline event is usually the climax of the Kandy Esala Perahera around the Nikini full moon — caparisoned elephants, Kandyan dancers, whip-crackers, and torchbearers parading the streets around the Temple of the Tooth over about ten nights. It's Sri Lanka's most spectacular festival; the exact dates move with the lunar calendar each year, so confirm them and reserve Kandy hotels well ahead, as they fill fast.
Travel score
Colombo August Weather Stats
Avg High
30°C
Avg Low
26°C
Rainy Days
10
110mm total
Sunshine
7.5h
Daily avg
Humidity
77%
muggy
UV Index
11
Extreme
Wind
14 km/h
Gusts 28
Crowds
Moderate
At attractions
August Sunrise & Sunset
Air Quality
PM2.5
20 μg/m³
PM10
38 μg/m³
Status
good
Feels-Like Temperature & Wind
Feels like
Daytime
36°C
Nighttime
28°C
Humidity and wind affect how the actual temperature feels.
Wind
14 km/h
Max gust 28 km/h
Activities Recommended for August
August Travel Pros & Cons
Pros
- Relatively drier monsoon month
- Kandy Esala Perahera climax (full moon)
- East coast still good for beaches/surf
- More sunny windows than mid-monsoon
Cons
- West/south coasts still see showers
- Perahera packs out Kandy hotels
- High humidity
- Festival dates vary — verify yearly
August Events & Festivals
- A relatively drier monsoon month
- Nikini Poya (August full moon)
- Kandy Esala Perahera climaxes (often late July-August) — grandest procession
- East coast still good for beaches and surf
Colombo in August — Full Picture
August is one of the drier monsoon months in Colombo, with fewer showers and more sunshine than the May-June peak. It averages a warm, humid 30°C/26°C with moderate rainfall (about 110mm).
The headline event is usually the climax of the Kandy Esala Perahera around the Nikini full moon — caparisoned elephants, Kandyan dancers, whip-crackers, and torchbearers parading the streets around the Temple of the Tooth over about ten nights. It's Sri Lanka's most spectacular festival; the exact dates move with the lunar calendar each year, so confirm them and reserve Kandy hotels well ahead, as they fill fast.
Colombo is workable, with reasonable weather windows, and the east coast (Arugam Bay surf, Trincomalee) remains good.
Note: showers still come and go, so keep an umbrella close, and book around the Perahera if Kandy is on your route.
What to Wear & What to Pack
Drier monsoon spell — warm and humid around 30°C/26°C with fewer showers and more sun than mid-monsoon. Light clothing, a small umbrella, SPF 50+. A sarong for temples and a layer for air conditioning.
Packing Checklist
Seasonal Weather Overview
Spring (Mar·Apr·May)
31.7°C
25°C
13/mo
Summer (Jun·Jul·Aug)
Current30°C
26°C
12/mo
Autumn (Sep·Oct·Nov)
30°C
24.3°C
16/mo
Winter (Dec·Jan·Feb)
30.7°C
23°C
8.3/mo
Colombo Monthly Weather Comparison
| Month | High | Low | Rain | Sun | Humid | UV | Crowd | Price |
|---|---|---|---|---|---|---|---|---|
| January (Best) | 31° | 23° | 8d·60mm | 8h | 75% | 11 | Busy | Peak |
| February (Best) | 31° | 23° | 6d·70mm | 9h | 73% | 12 | Busy | Peak |
| March (Best) | 32° | 24° | 8d·110mm | 8.5h | 75% | 12 | Busy | Shoulder |
| 32° | 25° | 14d·230mm | 7.5h | 78% | 12 | Moderate | Shoulder | |
| 31° | 26° | 17d·350mm | 6.5h | 80% | 11 | Quiet | Low season | |
| 30° | 26° | 15d·220mm | 6.5h | 79% | 11 | Quiet | Low season | |
| 30° | 26° | 11d·135mm | 7h | 78% | 11 | Moderate | Shoulder | |
| 30° | 26° | 10d·110mm | 7.5h | 77% | 11 | Moderate | Shoulder | |
| 30° | 25° | 12d·160mm | 7h | 78% | 11 | Quiet | Low season | |
| 30° | 24° | 19d·350mm | 6h | 80% | 11 | Quiet | Low season | |
| 30° | 24° | 17d·320mm | 6.5h | 80% | 11 | Moderate | Shoulder | |
| December (Best) | 30° | 23° | 11d·150mm | 7.5h | 77% | 11 | Busy | Peak |
View Other Months
Colombo August Hotel Picks
Frequently Asked Questions
Is August a good time to visit Colombo?
Colombo in August is moderate. Tourist crowds are moderate and flight/hotel prices are shoulder.
What's the average temperature in Colombo in August?
Colombo August averages a high of 30°C and a low of 26°C.
Does it rain much in Colombo in August?
Colombo August averages 110mm of rainfall over about 10 rainy days.
What should I wear in Colombo in August?
Drier monsoon spell — warm and humid around 30°C/26°C with fewer showers and more sun than mid-monsoon. Light clothing, a small umbrella, SPF 50+. A sarong for temples and a layer for air conditioning.
What time are sunrise and sunset in Colombo in August?
Colombo August sunrise is 06:05 and sunset is 18:20, with 12h 15min of daylight.
What's the air quality like in Colombo in August?
Colombo August air quality (AQI) averages 48, rated Good. PM2.5 averages 20μg/m³.
What activities are recommended in Colombo in August?
In August, Colombo is great for Kandy Esala Perahera climax (full moon), East-coast surf and beaches, Cultural Triangle (Sigiriya/Dambulla).
Is August peak season in Colombo?
Colombo August crowds are moderate and prices are shoulder. You can travel relatively comfortably without long queues.
Best Months to Visit Colombo
View Other Months
Why you can trust weather guide
Based in Chiang Mai for 8+ years, with 30+ countries visited across Southeast Asia, Japan, and Europe. Every detail in this guide is primary-source verified as of April 2026, with prices auto-refreshed via live exchange rate APIs. This isn't AI-generated boilerplate — it's written from the perspective of someone who has actually been there.