Colombo Weather in August
Sri Lanka · Tropical climate · Data averaged from 2020-01-01 to 2024-12-31 (5 years)
August in Colombo sees average temperatures ranging from a low of 25.1°C (77.2°F) to a high of 28.6°C (83.5°F), with a mean of 26.7°C (80.1°F). Compared to the annual average of 26.7°C (80.1°F), this month is in line with the yearly norm. Precipitation averages 256.6mm, making it approximately 7.0mm wetter than the monthly average of 249.0mm. The city receives an average of 9.6 hours of sunshine per day during August, with relative humidity averaging 85.2%. Wind speeds reach an average maximum of 19.6 km/h. For travelers, this month offers a temperature experience in Colombo, with wetter-than-average conditions compared to the rest of the year.
Colombo's tropical climate is warm and humid year-round, with two monsoon seasons. I've tracked the rainfall patterns and found that the city receives most of its rain from May to August and October to January. The best time for visiting is January to April, when the weather is drier and the coastal attractions are most enjoyable.
August vs Adjacent Months
| Metric | July | August | September |
|---|---|---|---|
| Mean Temp | 26.9°C (80.4°F) | 26.7°C (80.1°F) | 26.5°C (79.7°F) |
| Rainfall | 250.4mm | 256.6mm | 341.1mm |
| Sunshine | 9.3 hrs | 9.6 hrs | 8.6 hrs |
| Humidity | 85.5% | 85.2% | 86.1% |
| Wind | 20.1 km/h | 19.6 km/h | 19.3 km/h |
| Rainy Days | 30.0 | 30.2 | 30.0 |
Seasonal Context
August falls in Summer in the Northern Hemisphere. Summer brings the warmest conditions of the year with the longest daylight hours. For travelers visiting Colombo in August, the data indicates mixed conditions based on the combination of temperature, precipitation, and daylight hours.
Frequently Asked Questions
What is the average temperature in Colombo in August?
The average temperature in Colombo during August ranges from 25.1°C (77.2°F) to 28.6°C (83.5°F), with a mean of 26.7°C (80.1°F).
How much does it rain in Colombo in August?
Colombo receives an average of 256.6mm of precipitation in August, spread across approximately 30.2 rainy days.
What should I pack for Colombo in August?
Based on August weather data, pack lightweight, breathable clothing, sunscreen, and a hat. Rain gear is essential — this month averages 256.6mm of precipitation.
Is August a good time to visit Colombo?
August is a month with challenging conditions. Plan activities carefully and stay hydrated.
Other Months for Colombo
Cities with Similar August Climate (Tropical)
Data Source: Open-Meteo historical archive (2020-01-01 to 2024-12-31). Daily measurements aggregated into monthly climate normals. Coordinates: 6.93°, 79.85°. Timezone: Asia/Colombo. Last updated: 2026-07-30.