September · Thailand
Best time to visit Phuket in September Weather, crowds & prices
Weather in Phuket in September
Average temperature 28°C, 409 mm of rain, about 17 days with 6+ hours of sunshine and 83% humidity — based on the five most recent complete years of ERA5 data (2021–2025).
September score
5.8/10
Ranked #11 of 12 months
- Avg temp
- 28°C
- Rainfall
- 409 mm
- Humidity
- 83%
- Days with 6h+ sun
- 17
- Crowd Density
- Quiet / Uncrowded
- Average Expenses
- $ · Budget Friendly ($)
September in Phuket scores 5.8/10 for beach and coastal travel - ranked #11 of 12. Expect around 28°C, 409 mm of rain, and roughly 17 days with 6+ hours of sunshine this month.
Phuket’s Andaman beaches and island-hopping shine brightest in the dry, calm window from January through March.
September in Phuket — middling scores, decent value
Days in September average 28°C (82°F) and humidity near 83% — front-load outdoor plans before the heat builds and treat the middle of the day as indoor time.
Expect monsoon-level rainfall at 409 mm: only about 17 days with 6+ hours of sunshine across the month, and stretches of heavy rain are normal.
That is 5.8/10 on the same scale — 11th of 12 months, versus 8.4/10 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.
Budget for low-season pricing, and crowds are light for this destination.
If your dates are flexible, January is materially better in Phuket — 2.6 points higher on the same scale.
Frequently asked
- What is the weather like in Phuket in September?
- In September, Phuket averages 28°C, 409 mm of rain, and about 17 days with 6+ hours of sunshine. Its climate-comfort score is 5.8/10.
- Is September a good time to visit Phuket?
- September earns a 5.8/10 climate-comfort score. Use the year-round chart to weigh the weather against your budget and crowd preferences.
- How much does it rain in Phuket in September?
- Expect about 409 mm of rain in September. Average humidity is 83% and there are about 17 days with 6+ hours of sunshine.
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