Pattaya 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: November – April
What is the weather like in Pattaya in September?
In September, Pattaya is hot: daytime highs average 30 °C, and even at night it stays warm at around 26 °C. The sea averages 29.4 °C – almost as warm as a bath. Expect around 5 hours of sunshine a day. It is the rainy season: rain falls on about 21 days, totalling 190 mm. On about 11 days the thermometer climbs to 30 °C or more. The air is often humid and muggy. All in all, September is a good month for a holiday in Pattaya.
September compared
How the weather changes from August to October. Tap a month to open it.
| AugustAug | SeptemberSep | OctoberOct | |
|---|---|---|---|
| Score | 70 | 66 | 69 |
| Day | 30° | 30° | 30° |
| Night | 26° | 26° | 25° |
| Sea | 30° | 29° | 30° |
| Sun | 6 h | 5 h | 6 h |
| Rain days | 17 | 21 | 23 |
More details for September
- Daylight
- 12 h 13 min06:05 – 18:18
- UV index
- 13 · extremeclear sky, noon (estimate)
- Muggy days
- 30 daysdew point 18 °C or more
- Wind
- 15 km/haverage daily peak
- Cloud cover
- 90 %on average
- Hot days
- 11 days30 °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
- Water bottle – drink plenty
- Insect repellent
- Rain jacket or umbrella
Pattaya in September: quick answers
Is Pattaya hot in September?
Yes. In September, Pattaya is hot: daytime highs average 30 °C and nights stay around 26 °C. On about 11 days the thermometer climbs to 30 °C or more.
Can you swim in Pattaya in September?
Yes. In September the sea averages 29.4 °C – almost as warm as a bath.
Does it rain much in Pattaya in September?
It rains often – on about 21 days, adding up to 190 mm.
Pattaya month by month
The whole year in PattayaAll destinations: Thailand
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)