Your trips
Organize your trips easily with tabs
New York
Phuket
Any date
+ Search
background

Phuket in September: Weather, Average temperature and Climate

Planning a trip and want to know what the weather in Phuket in September will be like? Take a look at our weather guide for Phuket, based on historical data.
Check flight prices to Phuket on Avionero:
September

Weather in Phuket in September 2025

OK Weather
Warm
🌧️
Rainy
🌊
Very warm water
If you plan to visit Phuket in September, the weather is typically alright, with an average high temperature of +82°F during the day and approximately 0 sunny days. Expect some rainy, though, as there are typically 26 rainy days in the month and around 257 mm of precipitation. The weather is changeable so you may have to pack for every eventuality. Search flights in one click on Avionero.
Good to know:
  • September is usually the coldest month of the year in Phuket;

Average weather

☀️
+82°F
Avg. max. temperature
+73°F
Min.
+95°F
Max.
257 mm
Total precipitation
82%
Avg. humidity
3 m/s
Avg. wind
0 ☀️
Sunny Days
2 ⛅️
Cloudy
26 🌦
Rainy
Our opinion: Phuket has OK weather in September.

Average temperature in Phuket in September

Here are the expected maximum, average and minimum temperatures in Phuket for September based on the historical data.
Last Year
Historical Data

Going from a maximum of +84°F during the day to a minimum of +79°F during the night, the temperature in September averages around +82°F.

The average maximum temperature goes up 33% by the end of the month, compared with the beginning of the month, from +82°F to +84°F.

Is Phuket warm or cold in September?

Phuket is typically warm in September.

Maximum temperatures go down compared to the previous month from +84°F to +82°F. The minimum temperature also goes up from +79°F to +79°F.

It’s generally warm, but pack a long-sleeve shirt for evenings.

September is the coldest month in Phuket, here is the comparison with other months:

Water temperature in Phuket in September

Water in Phuket in September is Very warm. It varies from +82°F to +86°F, with an average of +84°F. Note that the air temperature is lower than the water temperature, averaging around +82°F.

In September, water temperatures are average relative to the rest of the year:

The warmest water temperatures in Phuket are reached in May, when the average sea temperature rises to +87°F. The coldest water temperatures are in January, with an average of +83°F.

Can you swim in Phuket in September?

You can definitely swim in Phuket in September, the water is very warm (+84°F in average), and might even be unpleasant for ones who like it more fresh.
🦭
Cold
Below +61°F
🏄‍♂️
Fresh
61°F - 70°F
🏊
Comfortable
70°F - 77°F
👙
Warm
77°F - 82°F
🔥
Very warm
+82°C and up
Don't forget sunscreen and a hat, it's going to be hot!

Climate in Phuket in September

Phuket weather looks like this, on average, in September and the surrounding months.
AugustSeptemberOctober
Avg. temperature
+84°F+82°F+82°F
Min. temperature
+73°F+73°F+73°F
Max. temperature
+95°F+95°F+97°F
Rainfall
197 mm257 mm269 mm
Wind
4 m/s3 m/s2 m/s
Avg. water temperature
+84°F+84°F+85°F
Humidity
81%82%83%
Air pressure
1008 HPa1009 HPa1009 HPa
Sunny days
000
Cloudy days
521
Rainy days
252625
Snowy days
000

September weather is still as ok as in August. It’s getting colder in September. From +84°F in the day, the average maximum temperature lowers to +82°F. Prepare for more rain. Average rainfall goes from 197 mm to 257 mm. Humidity rises from 81% to 82%. Winds are calmer in comparison to August, going down from 4 m/s to 3 m/s on average. The amount of sunny days stay about the same, averaging 0 sunny days during the month.

October brings much the same weather, it remains ok.

Wind

Wind speed in Phuket in September based on historical data.
Last Year
Historical Data

The average wind speed is 4 m/s getting up to 8 m/s which is a medium breeze. You can feel it, especially getting out of the water.

The average wind speed in Phuket is gradually decreasing during September, going from 8 m/s to 2 m/s over the course of the month.

Rain

Amount of rainfall in mm during September in Phuket based on historical data.
Last Year
Historical Data
Typically, there is a 73% chance of rain on an average day in September, with total rainfall of approximately 410 mm. The maximum amount of rainfall per day is around 58 mm, which is considered heavy rain. September is a pretty wet month with over 22 rainy days, so don’t forget to pack an umbrella, raincoat, and a pair of wellies.
September is one of the rainiest months in Phuket, here is a comparison with other months, total mm:
Phuket wettest month is October, where a typical day has a 81% chance of precipitation and 269 mm of rainfall per day. February, on the other hand, is the driest month with a mere 41% chance of precipitation and 29 mm of rainfall per day.

How was the weather last September in Phuket?

This is the weather in Phuket in September 2023:
1 September
🌧️
+82°F
2 September
🌧️
+82°F
3 September
🌧️
+83°F
4 September
🌧️
+83°F
5 September
☁️
+84°F
6 September
☁️
+84°F
7 September
☁️
+84°F
8 September
☁️
+84°F
9 September
☁️
+84°F
10 September
☁️
+82°F
11 September
☁️
+84°F
12 September
☁️
+84°F
13 September
☁️
+84°F
14 September
☁️
+84°F
15 September
☁️
+83°F
16 September
🌧️
+83°F
17 September
☁️
+84°F
18 September
☁️
+83°F
19 September
☁️
+84°F
20 September
☁️
+84°F
21 September
🌧️
+83°F
22 September
🌧️
+81°F
23 September
🌧️
+82°F
24 September
🌧️
+83°F
25 September
🌧️
+83°F
26 September
🌧️
+82°F
27 September
☁️
+82°F
28 September
☁️
+83°F
29 September
☁️
+83°F
30 September
☁️
+84°F
In September 2023 Phuket had 0 sunny days, 19 cloudy days, and 11 rainy days. The average maximum temperature was +82°F, with an absolute maximum of +84°F and a minimum of +81°F. The average humidity was 83%, with a maximum of 100% and a minimum of 72%. The average wind speed was 4 m/s, with a maximum of 10 m/s and a minimum of 0 m/s.
Are you planning a trip in September?

Climate Change Over the Years

This is how Phuket climate has changed over the last 43 years.

The climate in Phuket in September has not changed that much over the last 43 years.

The average temperature was the lowest in 1994 (+82°F) and the highest in 2019 (+91°F). The driest year was 1981 with only 1340 mm of rainfall, and the wettest year was 2017 with 2500 mm.

FAQ

Frequently asked questions about the weather in Phuket in September:

Is September a good time to visit Phuket?

It’s always a good time to visit Phuket, but the weather is changeable in September, so plan a mix of indoor and outdoor activities and exploring, and pack for every eventuality.

Can you sunbathe in Phuket in September?

September is warm in Phuket. You may enjoy some beach or pool time in the day, but pack something a tad warmer for the evening.

Can you swim in Phuket in September?

Yes, you can swim in Phuket in September, the water is very warm, with temperature averaging at +84°F, but it's important to manage hydration and sun exposure.

Is Phuket rainy in September?

Phuket is often rainy in September. You may get a bit damp when outside, so pack an umbrella, and maybe even a raincoat.

Is it sunny in Phuket in September?

Usually, it’s not very sunny in Phuket in September, often it’s pretty cloudy. Pack for any eventuality; layering can help reduce the number of bulky items needed.

Other cities in Thailand

Check out the weather for other cities in Thailand.

Monthly weather in Phuket

Source of the data

For this page, we’ve looked at the typical weather in Phuket, based on historical hourly weather data from January 1, 1979, to December 31, 2023.

For past dates, we show actual recorded data at the location at that time. Forecasts are based on recorded weather during that day of the year, averaged over the total years for which we have records (unless stated otherwise). The daily temperature is the highest recorded temperature in the shadow during that day.