September · Thailand
Best time to visit Khao Sok National Park in September Weather, crowds & prices
Weather in Khao Sok National Park in September
Average temperature 25°C, 407 mm of rain, about 15 days with 6+ hours of sunshine and 92% humidity — based on the five most recent complete years of ERA5 data (2021–2025).
September score
4.1/10
Ranked #9 of 12 months
- Avg temp
- 25°C
- Rainfall
- 407 mm
- Humidity
- 92%
- Days with 6h+ sun
- 15
- Crowd Density
- Quiet / Uncrowded
- Average Expenses
- $ · Budget Friendly ($)
September in Khao Sok National Park scores 4.1/10 for nature and wildlife travel - ranked #9 of 12. Expect around 25°C, 407 mm of rain, and roughly 15 days with 6+ hours of sunshine this month.
Khao Sok is southern Thailand's ancient rainforest of Cheow Lan lake floating bungalows and hornbill calls. Best window: the drier months outside peak monsoon.
September in Khao Sok National Park: expect compromises
Trail conditions at 25°C (77°F) favour early starts and shaded routes in September; midday is for water breaks, not for exposed climbs.
Expect monsoon-level rainfall at 407 mm: only about 15 days with 6+ hours of sunshine across the month, and stretches of heavy rain are normal.
That is 4.1/10 on the same scale — 9th of 12 months, versus 7.5/10 for the best month here.
Pack light clothing, a hat and real sun protection, a proper rain shell rather than an umbrella, footwear you can get muddy.
Budget for low-season pricing, and crowds are light for this destination.
If your dates are flexible, January is materially better in Khao Sok National Park — 3.4 points higher on the same scale.
Frequently asked
- What is the weather like in Khao Sok National Park in September?
- In September, Khao Sok National Park averages 25°C, 407 mm of rain, and about 15 days with 6+ hours of sunshine. Its climate-comfort score is 4.1/10.
- Is September a good time to visit Khao Sok National Park?
- September earns a 4.1/10 climate-comfort score. Use the year-round chart to weigh the weather against your budget and crowd preferences.
- How much does it rain in Khao Sok National Park in September?
- Expect about 407 mm of rain in September. Average humidity is 92% and there are about 15 days with 6+ hours of sunshine.
Curated in Khao Sok National Park
Tickets & experiences
Things to do in Khao Sok National Park
Khao Sok National Park, Thailand. Live activities and tours from GetYourGuide, matched to this destination.