Phuket in September
In September, Phuket averages 31°C (88°F) during the day and 25°C (77°F) at night, with frequent rain — about 22 days of the month see precipitation (375 mm total).
ShoulderConditions are warm and beach-friendly. Expect daily rain or showers, often in heavy bursts.
September is one of the wetter and less comfortable months in Phuket. If your dates are flexible, consider a different time of year.
How September compares to the rest of the year in Phuket
September is one of the coolest months in Phuket (11th of 12) and one of the wettest months (1st of 12). Daytime temperature runs 1°C below the annual average (32°C). September runs roughly the same as August (31°C) and stays flat into October.
September sunrise & sunset in Phuket
Times shown for Phuket local time (Asia/Bangkok), calculated for the 15th of September. They shift by a few minutes day to day across the month.
Photography light in Phuket — September
Golden-hour and blue-hour windows for the 15th of September, in Phuket's local time. Use these for soft warm light (golden) or cool architectural twilight (blue).
📅 When to book — Phuket in September
Travel writers usually only tell you when to go. Here's when to book flights and lodging for the best mix of price and availability, based on September's tier (Shoulder) and Phuket's popularity.
Crowds & pricing — September in Phuket
Phuket is in a shoulder season month — fewer crowds, slightly lower prices, and a calmer atmosphere than peak weeks. Most major sights stay open with normal hours, though a handful of seasonal restaurants or boat trips may run reduced schedules. Many regulars consider these months the best time to visit because you trade a small amount of weather reliability for a much more pleasant on-the-ground experience.
Sun & mosquito risk — September in Phuket
UV is a clear-sky sea-level estimate — clouds, altitude, and reflective surfaces (snow, water) shift it ±30%. Mosquito risk is climate-derived only; for current disease advisories (dengue, malaria, zika) check the CDC or WHO travel pages before your trip.
Sea temperature in Phuket — September
Across the year Phuket's sea swings from 29.1°C (January) to 31.8°C (May) — September sits at 29.7°C.
Phuket in other months
| Month | Avg high | Avg low | Rainfall | Rain days | Snow days |
|---|---|---|---|---|---|
| January | 32°C / 90°F | 23°C / 73°F | 20 mm | 3 | — |
| February | 33°C / 91°F | 24°C / 75°F | 30 mm | 3 | — |
| March | 33°C / 91°F | 25°C / 77°F | 55 mm | 6 | — |
| April | 33°C / 91°F | 25°C / 77°F | 155 mm | 11 | — |
| May | 32°C / 90°F | 25°C / 77°F | 295 mm | 19 | — |
| June | 31°C / 88°F | 25°C / 77°F | 250 mm | 19 | — |
| July | 31°C / 88°F | 25°C / 77°F | 275 mm | 21 | — |
| August | 31°C / 88°F | 25°C / 77°F | 285 mm | 19 | — |
| September | 31°C / 88°F | 25°C / 77°F | 375 mm | 22 | — |
| October | 31°C / 88°F | 24°C / 75°F | 290 mm | 20 | — |
| November | 32°C / 90°F | 24°C / 75°F | 175 mm | 13 | — |
| December | 32°C / 90°F | 23°C / 73°F | 55 mm | 6 | — |
Other cities with similar September weather
🌍 See the full ranked list of climate twins for Phuket in September →
Frequently asked questions
How hot is Phuket in September?
In September, Phuket averages a high of 31°C (88°F) and a low of 25°C (77°F) — generally hot.
Does it rain a lot in Phuket in September?
September is quite rainy in Phuket, with about 22 rainy days on average.
Is September a good time to visit Phuket?
September is hot but on the rainy side. It suits travelers who are comfortable with hot weather; check the month-by-month ranking to compare it against the rest of the year.
What should I pack for Phuket in September?
Pack lightweight, breathable clothing, sunglasses and sunscreen, plus a compact umbrella or rain jacket. See the full September packing list for Phuket for a complete, climate-based checklist.
Check the live 10-day forecast and sunrise/sunset.