Climate averages 1991–2020
Phuket weather
in September.
A warm, very wet month: the 11th warmest and the wettest of the year.
Long-term climate patterns, not a forecast for a particular trip.
September is a warm month in Phuket: daytime highs average 27.8°C and nights cool to about 25.7°C. By daytime temperature it is the 11th warmest of the 12 months.
Expect about 311 mm of rain on roughly 25 days, which makes September a very wet month (the wettest month of the year). Daylight, from sunrise to sunset, lasts about 12 h 10 min on an average September day.
The nearest other city in this atlas is Surat Thani (173 km away). In September its highs average 30.2°C, 2.4°C warmer than Phuket, with 154 mm of rain.
Among the 46 cities listed in Thailand, Phuket ranks 46th of 46 for the warmest September highs and 45th of 46 for the driest September (rainfall, lowest first). The mean September high of those 46 cities is 30.3°C; Phuket is 2.5°C cooler than that mean.
From September to October, average highs fall by 0.1°C to 27.7°C, and monthly rainfall falls from 311 mm to 306 mm.
The annual picture
September in context
Monthly rainfall
Average total · mmAverages from hourly ERA5 reanalysis data. Actual weather varies from year to year. How these numbers are calculated
Every month, side by side
Phuket climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 28.4°C25.4°C | 25.4°C | 45 | 6.9 | 11.712 h |
| February | 28.9°C25.9°C | 25.9°C | 21 | 4.1 | 11.912 h |
| March | 29.3°C26.4°C | 26.4°C | 78 | 10.4 | 12.112 h |
| April | 29.4°C26.7°C | 26.7°C | 125 | 17.9 | 12.312 h |
| May | 28.9°C26.6°C | 26.6°C | 266 | 25.1 | 12.512 h |
| June | 28.7°C26.6°C | 26.6°C | 257 | 22.6 | 12.613 h |
| July | 28.3°C26.3°C | 26.3°C | 253 | 23.5 | 12.513 h |
| August | 28.1°C26.2°C | 26.2°C | 276 | 23.7 | 12.412 h |
| September, selected | 27.8°C25.7°C | 25.7°C | 311 | 24.9 | 12.212 h |
| October | 27.7°C25.3°C | 25.3°C | 306 | 27.3 | 12.012 h |
| November | 27.9°C25.5°C | 25.5°C | 184 | 20.3 | 11.812 h |
| December | 28.1°C25.4°C | 25.4°C | 81 | 11.4 | 11.712 h |
Rainfall is the average of the 30 separate monthly totals. A rain day is a local calendar day with at least 1 mm of precipitation. Daylight is the calculated sunrise-to-sunset length, not measured sunshine.
Compare places
September in nearby cities
- Surat Thani in SeptemberThailand · 173 kmHigh 30.2°C · Low 23.9°C · 154 mm rain
- Nakhon Si Thammarat in SeptemberThailand · 183 kmHigh 30.1°C · Low 23.8°C · 149 mm rain
- Ban Mai in SeptemberThailand · 249 kmHigh 30.1°C · Low 25.5°C · 123 mm rain
- Hat Yai in SeptemberThailand · 249 kmHigh 30.4°C · Low 24.2°C · 164 mm rain
- Alor Setar in SeptemberMalaysia · 293 kmHigh 29.4°C · Low 24.2°C · 259 mm rain
- Pendang in SeptemberMalaysia · 312 kmHigh 29.5°C · Low 23.8°C · 254 mm rain
- Lhokseumawe in SeptemberIndonesia · 331 kmHigh 29.1°C · Low 24.8°C · 92 mm rain
- Kota Kuala Muda in SeptemberMalaysia · 336 kmHigh 29.5°C · Low 24.6°C · 242 mm rain
Read the numbers correctly
Climate, not a promise.
These patterns help compare months. They cannot tell you the weather on a specific day of your trip.
Sources, method and limitsHow these numbers are made (what the highs, lows and rain days mean, the sources and the model cell used for Phuket) is explained once on the Phuket year overview and on the Sources, method and limits page.