Colombo weather in July
Temperature, sea and sunshine in July: long-term averages from 30 years of weather data, not a forecast.
Holiday weather in July
Fair
Best time to visit: January
What is the weather like in Colombo in July?
In July, Colombo is hot: daytime highs average 29 °C, and even at night it stays warm at around 25 °C. The sea averages 27.8 °C – lovely and warm for swimming. Expect around 5 hours of sunshine a day. It is the rainy season: rain falls on about 29 days, totalling 232 mm. The air is often humid and muggy. All in all, July is a so-so month for a holiday in Colombo.
July compared
How the weather changes from June to August. Tap a month to open it.
More details for July
- Daylight
- 12 h 29 min06:02 – 18:31
- UV index
- 13 · extremeclear sky, noon (estimate)All months
- Muggy days
- 31 daysdew point 18 °C or more
- Wind
- 17 km/haverage daily peak
- Cloud cover
- 86 %on average
- Hot days
- 1 day30 °C or more
- Time zone
- UTC+5:30Asia/Colombo
How the score comes together
- Temperatureweight 50 %80 %
- Sunshineweight 20 %38 %
- Few rainy daysweight 30 %0 %
Each factor is rated from 0 to 100 % and weighted for the travel style “City break”.
What to pack in July
- Swimwear
- Sunscreen
- Sunglasses & sun hat
- Light, breathable clothes
- Insect repellent
- Rain jacket or umbrella
Colombo in July: quick answers
Is Colombo hot in July?
Yes. In July, Colombo is hot: daytime highs average 29 °C and nights stay around 25 °C.
Can you swim in Colombo in July?
Yes. In July the sea averages 27.8 °C – lovely and warm for swimming.
Does it rain much in Colombo in July?
It rains often – on about 29 days, adding up to 232 mm.
Colombo month by month
The whole year in ColomboAll destinations: Sri LankaWhere to go in JulySea temperature in July
Climate averages 1996–2025, not a forecast. Data: Copernicus ERA5 / ERA5-Land via Open-Meteo.com (CC BY 4.0), NOAA OISST, WMO 1991–2020 (NOAA NCEI), GeoNames (CC BY 4.0)