Khao Lak weather in September
Temperature, sea and sunshine in September: long-term averages from 30 years of weather data, not a forecast.
Holiday weather in September
Good
Best time to visit: January – March
What is the weather like in Khao Lak in September?
In September, Khao Lak is hot: daytime highs average 28 °C, and even at night it stays warm at around 24 °C. The sea averages 28.8 °C – lovely and warm for swimming. Expect around 5 hours of sunshine a day. It is the rainy season: rain falls on about 26 days, totalling 297 mm. The air is often humid and muggy. All in all, September is a good month for a holiday in Khao Lak.
September compared
How the weather changes from August to October. Tap a month to open it.
| AugustAug | SeptemberSep | OctoberOct | |
|---|---|---|---|
| Score | 68 | 66 | 66 |
| Day | 28° | 28° | 28° |
| Night | 25° | 24° | 24° |
| Sea | 29° | 29° | 29° |
| Sun | 6 h | 5 h | 5 h |
| Rain days | 26 | 26 | 29 |
More details for September
- Daylight
- 12 h 11 min06:17 – 18:28
- UV index
- 13 · extremeclear sky, noon (estimate)All months
- Muggy days
- 30 daysdew point 18 °C or more
- Wind
- 15 km/haverage daily peak
- Cloud cover
- 89 %on average
- Hot days
- 1 day30 °C or more
- Time zone
- UTC+7Asia/Bangkok
How the score comes together
- Temperatureweight 35 %100 %
- Seaweight 25 %100 %
- Sunshineweight 20 %32 %
- Few rainy daysweight 20 %0 %
Each factor is rated from 0 to 100 % and weighted for the travel style “Sun, sea & sand”.
What to pack in September
- Swimwear
- Sunscreen
- Sunglasses & sun hat
- Light, breathable clothes
- Insect repellent
- Rain jacket or umbrella
Khao Lak in September: quick answers
Is Khao Lak hot in September?
Yes. In September, Khao Lak is hot: daytime highs average 28 °C and nights stay around 24 °C. On about 1 days the thermometer climbs to 30 °C or more.
Can you swim in Khao Lak in September?
Yes. In September the sea averages 28.8 °C – lovely and warm for swimming.
Does it rain much in Khao Lak in September?
It rains often – on about 26 days, adding up to 297 mm.
Khao Lak month by month
The whole year in Khao LakAll destinations: ThailandWhere to go in September
Climate averages 1996–2025, not a forecast. Data: Copernicus ERA5 / ERA5-Land via Open-Meteo.com (CC BY 4.0), NOAA OISST, GeoNames (CC BY 4.0)