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Phuket, Thailand · Equatorial tropical

Phuket in September: go or not?

Mixed period. Phuket in September: 4.9/10.

📅 Data updated: October 2026 🛰️ ERA5 · 10 years 📍 7.88°N · 98.39°E
⚡ This month's verdict
Why not
Phuket · September
4.9
25–29°
Temperature
47%
Rain
4h
Sun
🌴 Tropical☀️ High UV🌧️ Monsoon season
Photo : TRAVELINGVIBE.COM via Unsplash
The month in detail

What to expect in September

In September, Phuket sees 29°C during the day with 3.6h of sunshine per day. With 47% of rainy days, always have indoor alternatives planned.

September ranks 10 out of 12 months in Phuket. Compared to August: 7 pts more rainy days, −1.3h of sun per day.

This month's conditions

What it's like in September

UV index
8 · high
sunscreen and hat advised
Feels like
very humid
24°
Sea
30°C
warm, ideal
Daylight
12.0h of daylight
Air quality
good
AQI 21
Compare

Is September the right month?

The best month in Phuket is January (5.9/10), 1.0 pt higher than September.

See January →See all 12 months →
Book

Plan your trip

Hotels at their lowest outside peak season, highest on comfortable months. Shoulder seasons offer a good price/climate compromise.

🎟️ Activities & tours · Phuket

GetYourGuide selection · free cancellation

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Affiliate link · GetYourGuide
Practical info

What you need to know before you go

Three angles: the country (language, currency, safety, budget), the year-round climate, and the specifics of a tropical stay.

Country · Thailand

🗣️LanguageThai
💶CurrencyThai Baht (฿)
🚗DrivingLeft-hand
🛡️Safety ⓘSafe · 2/5
💰Cost of living ⓘCheap · 2/5

🌡️ Climate

🌍Climate typeEquatorial tropical
📈Climate trend ⓘStable
🔥Hottest monthFebruary · 32°C
❄️Coolest monthSeptember · 29°C
🌧️Rainiest month ⓘOctober · 59%

🏝️ Tropical stay

🌞Dry season ⓘMay → Sep
🌧️Wet season ⓘDec → Mar
🌀Cyclones ⓘNone (equator)
Location

Where is Phuket ?

Global position + regional geographic context.

🌍 World
🔍 Geographic context
Thailand
Equatorial tropical climate with a 5.9 → 4.7 gap between best and worst month. 10 years of ERA5 data to choose by project.
7.88°N · 98.39°E
Questions

Frequently asked questions

What is the best time to visit Phuket?
January is the best month with 30.0°C highs, 24.0°C lows, 7.6h of sunshine and 16.0% rainy days.
How many hours of sunshine does Phuket get in January?
Phuket averages 7.6 sunshine hours per day in January. It is the sunniest month with a climate score of 5.7/10.
What is the rainiest month in Phuket?
October is the most unfavourable month with October has the lowest climate score of the year and the lowest climate score of the year.
What are the temperatures at night in Phuket in January?
In January, overnight lows reach 24.0°C, while afternoon highs average 30.0°C.
Is Phuket good in winter?
In winter (December-February), Phuket scores 5.5/10 on average — Decent period conditions for cultural visits.. The best month overall remains January with a score of 5.7/10.
When should you avoid Phuket?
October is the most difficult month to visit Phuket, with October has the lowest climate score of the year. Climate conditions are at their lowest of the year during this period.
Can you swim in Phuket in September?
In September, the sea averages 30°C in Phuket: warm, ideal. Ideal conditions for swimming and snorkeling.
Do you need sun protection in Phuket in September?
The average UV index reaches 8 in September in Phuket (high), with about 12.0h of daylight. Sunscreen and hat advised.