Verdict: Fair month
Phuket Weather in September
September runs warm in Phuket, with daily highs around 29°C (84°F) and nights near 25°C (77°F). It's also the wet side of the calendar: rain falls on about 25 days, so build flexibility into plans. September is workable in Phuket if your dates are fixed — just plan around the conditions.
Average high
29°C / 84°F
Average low
25°C / 77°F
Rain days
~25
Precipitation
272 mm
What to pack for Phuket in September
- Summer clothes, plus one light layer for air-con and evenings
- High-SPF sunscreen, sunglasses, and a refillable water bottle
- Rain gear is non-negotiable — expect rain on roughly 25 days
- Quick-dry shoes — downpours are short but heavy
- Comfortable walking shoes — every guide on this site assumes you'll use them
September against the rest of the year
Warmest in Phuket: Mar (33°C / 91°F) · Coolest: Sep (29°C / 84°F) · Wettest: Oct (~28 rain days)
30°
24°
Jan
32°
25°
Feb
33°
25°
Mar
32°
26°
Apr
31°
26°
May
30°
25°
Jun
30°
25°
Jul
30°
25°
Aug
29°
25°
Sep
29°
24°
Oct
29°
24°
Nov
29°
24°
Dec
Daily highs / lows in °C · bars show rain days per month · ERA5 climate normals (2020–2024)