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Colombo Weather in August, Sri Lanka

Slide and Tap Other Months

  • What is Average Temperature?
    The average high temperature and the average low temperature for that month, on a daily basis, divided by 2 equals the average temperature for that month

    Temperature

    28°C
    82°F
  • What is Average High Low Temperature?
    The sum of high temperatures/low temperatures divided by the number of days in that month, recorded daily

    High Temperature

    30°C
    86°F
  • What is Average High Low Temperature?
    The sum of high temperatures/low temperatures divided by the number of days in that month, recorded daily

    Low Temperature

    25°C
    77°F
  • What is Average Day Temperature?
    The average temperature recorded between sunrise and sunset

    Day Temperature

    28°C
    83°F
  • What is Average Night Temperature?
    The average temperature recorded between sunset and sunrise

    Night Temperature

    27°C
    81°F
  • What is Average Sea Temperature?
    Average daily sea temperatures and divided by the number of days in the month. Sea Temperatures are taken from buoys, ships and even satellites can calculate sea temperature based on energy that is radiated from the sea's surface

    Sea Temperature

    28°C
    82°F
  • What are Average Daily Sunshine Hours?
    Total sunshine hours for the month, divided by the number of days in the month. Sunshine hours are taken with a sunshine recorder, either a Campbell-Stokes recorder or an Eppley Pyreheliometer

    Sunshine Hours

    7 hours
  • What is Average Rainfall?
    The amount of mm in rain for that month divided by the number of days, and the number of days that it rains during that month on average, over a given period of years

    Rainfall Days

    9 days
  • What is Average Rainfall?
    The amount of mm in rain for that month divided by the number of days, and the number of days that it rains during that month on average, over a given period of years

    Rainfall

    114 mm

August, 2025

Sun
Mon
Tue
Wed
Thu
Fri
1 Avg 28º 82º
Sat
2 Avg 28º 82º
3 Avg 28º 82º
4 Avg 28º 82º
5 Avg 28º 82º
6 Avg 28º 82º
7 Avg 28º 82º
8 Avg 27º 81º
9 Avg 27º 81º
10 Avg 27º 81º
11 Avg 27º 81º
12 Avg 27º 81º
13 Avg 27º 81º
14 Avg 27º 81º
15 Avg 27º 81º
16 Avg 27º 81º
17 Avg 27º 81º
18 Avg 27º 81º
19 Avg 27º 81º
20 Avg 27º 81º
21 Avg 27º 81º
22 Avg 28º 82º
23 Avg 28º 82º
24 Avg 28º 82º
25 Avg 27º 81º
26 Avg 27º 81º
27 Avg 28º 82º
28 Avg 27º 81º
29 Avg 27º 81º
30 Avg 27º 81º
31 Avg 27º 81º
Forecast
Avg Historical Daily Average

What's the weather like in Colombo in August

The month of August is an excellent one to visit Colombo. The capital city of Sri Lanka receives relatively few tourists in August, therefore, rates are lower and the city's streets aren't cramped with tourists. This makes it easier for one to tour and discover the city. 

Colombo enjoys a tropical climate and the month of August is no exception. Although it is a relatively dry month, it comes just before the second rainy season which begins in September. Therefore, tourist should expect some rainfall towards the end of the month. 

Temperature

August has relatively high temperatures averaging 28°C (roughly 82°F). It's average high temperatures are around 30°C (86°F) and it receives low temperatures averaging 25°C (77°F).

Rainfall

August also receives about 114 mm of rainfall, and has an average of 11 rainy days.

Sunshine Hours

However, the month still receives around 7 hours of sun a day. 

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Things to do in Colombo in August

August is an extremely important month in Sri Lanka. Usually, the KandyEsala festival that begins in late July will still be going on. The festival, which is held to pray for rain and to celebrate Sri Lanka's greatest treasure, the Buddha's tooth, goes on for ten days. The festivities increase in momentum and size until the final day. 

It is interesting to note that Sri Lanka has gone to war with both India and China over the tooth. There are also a number of stories that surround the tooth, with one of them claiming that the Portuguese once took the tooth away, destroyed it and scattered the remnants in the sea, but it reformed and flew back to Sri Lanka. 

Whether the story is true or false, it provides both the Citizens of the island nation and tourists with a marvelous festival, which is often referred to as Asia's most glamorous festival. 

Colombo Events August

Food Festival


7 Aug 2026
9 Aug 2026

Colombo Food & Spice Festival – Galle Face Green 🍲

Food stalls, spice vendors and regional culinary exhibitors gather along Galle Face Green for this outdoor festival. Visitors sample Sri Lankan snack foods, curries and desserts, while demonstrations show spice blending and traditional preparation methods. Evening sessions include music and seating areas overlooking the waterfront.


Tourism meeting


14 Aug 2026
16 Aug 2026

Sri Lanka Travel & Tourism Expo – BMICH Exhibition 🗺

Tourism boards, travel agencies and hospitality operators showcase destinations, tour packages and cultural experiences. Visitors explore themed booths, view promotional films and speak with representatives from national parks, coastal resorts and heritage sites. The expo includes cultural displays and presentations on Sri Lanka’s tourism offerings.


Book Fair


21 Aug 2026
23 Aug 2026

International Book Exhibition – BMICH 🗓

This exhibition brings together publishers, booksellers and educational suppliers offering fiction, textbooks, children’s literature and educational materials. Visitors browse booths arranged in large exhibition halls, attend author meet-ups and join storytelling sessions. Schools and families form a major part of the audience during the three-day event.