August · Thailand
Best time to visit Koh Tao in August Weather, crowds & prices
Weather in Koh Tao in August
Average temperature 29°C, 217 mm of rain, about 23 days with 6+ hours of sunshine and 81% humidity — based on the five most recent complete years of ERA5 data (2021–2025).
August score
6.8/10
Ranked #6 of 12 months
- Avg temp
- 29°C
- Rainfall
- 217 mm
- Humidity
- 81%
- Days with 6h+ sun
- 23
- Crowd Density
- Moderate Crowds
- Average Expenses
- $$ · Moderate Cost ($$)
August in Koh Tao scores 6.8/10 for beach and coastal travel - an above-average month (#6 of 12). Expect around 29°C, 217 mm of rain, and roughly 23 days with 6+ hours of sunshine this month.
Ko Tao is Thailand's dive-cert island-compact coves, training reefs, and a backpacker nightlife pocket in Mae Haad. Best window: the drier months outside peak monsoon.
August in Koh Tao — middling scores, decent value
Days in August average 29°C (84°F) and humidity near 81% — front-load outdoor plans before the heat builds and treat the middle of the day as indoor time.
This is the year's wettest stretch at 217 mm, but with about 23 days with 6+ hours of sunshine it is not a total loss; an indoor fallback covers the risk.
That is 6.8/10 on the same scale — 6th of 12 months, versus 9.2/10 for the best month here.
Pack the lightest breathable clothing you own, a hat, and more water than feels necessary, a proper rain shell rather than an umbrella.
Expect mid-season pricing, and crowds are moderate.
If your dates are flexible, March is materially better in Koh Tao — 2.4 points higher on the same scale.
Frequently asked
- What is the weather like in Koh Tao in August?
- In August, Koh Tao averages 29°C, 217 mm of rain, and about 23 days with 6+ hours of sunshine. Its climate-comfort score is 6.8/10.
- Is August a good time to visit Koh Tao?
- August earns a 6.8/10 climate-comfort score. Use the year-round chart to weigh the weather against your budget and crowd preferences.
- How much does it rain in Koh Tao in August?
- Expect about 217 mm of rain in August. Average humidity is 81% and there are about 23 days with 6+ hours of sunshine.
Curated in Koh Tao
Tickets & experiences
Things to do in Koh Tao
Koh Tao, Thailand. Live activities and tours from GetYourGuide, matched to this destination.