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Bangrak Beach Weather in September

September in Bangrak Beach typically sees daytime highs of 30°C (86°F) and nighttime lows of 27°C (81°F). Rainfall is also possible this month, so it's worth packing an umbrella.

Rainfall in Bangrak Beach in September

The climate data from previous years indicates about 18 days of rain, averaging 166 mm (6.5 in) for the month. Expect frequent rainfall this month, and not just light drizzle. When it rains, it tends to come down hard.

Temperature in Bangrak Beach in September

September in Bangrak Beach brings typical temperatures with highs around 30°C (86°F) and lows of 27°C (81°F). This kind of day-to-night contrast is typical for this time of year. Nights are warm at 27°C (81°F), which can make sleeping uncomfortable. Keeping windows open or using a fan can help. A cold shower before bed is also a good way to cool down.

Sunshine in Bangrak Beach in September

With about 145 hours of sunshine, the area enjoys a nice balance of sun and overcast, creating a pleasant environment.

Average water temperature in September

At 29°C (84°F), the water is very warm — more like a heated pool than the sea. Great for those who like warm water, though some may find it less refreshing on a hot day.

Should you favor a climate that's both dry and comfortably warm, January and February typically offer the most agreeable circumstances. If you're seeking pleasant, dry and sunny weather somewhere else in the world, our weather planner can help you explore other options.

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Check the conditions for any month of the year.

For a detailed overview over the year and the best time to visit Thailand, check out our Bangrak Beach's climate page.

Bangrak Beach Temperature in September

Min TemperatureMin Temperature 27°C (81°F)  
Max TemperatureMax Temperature 30°C (86°F)  
Water TemperatureWater Temperature 29°C (84°F) *  
Chance of RainChance of Rain 58%  
PrecipitationPrecipitation 166 mm (6.5 in)  
Rainy daysRainy days 18 days  
HumidityHumidity 79% *  
SunshineSunshine 145 hours *  
Percentage SunshinePercentage Sunshine *  
* Data from: Koh Samui, Thailand (12 KM, 7 Miles).

Daily Historical Temperatures

48-year average (1976-2025)

Based on our historical records, temperatures in Bangrak Beach typically stay consistent throughout September, with daily highs averaging around 30°C (86°F). Nights are warm, with lows around 26°C (79°F).

Average temperatures in September

Daily Historical Precipitation

48-year average (1976-2025)

Average daily rainfall for each day of the month based on long-term records.

Average precipitation in September

Historical weather for Bangrak Beach in September

Browse day-by-day weather records for Bangrak Beach spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.

Bangrak Beach historical weather extremes in September

Based on 39 years of weather observations (1986-2025), these are the most extreme conditions recorded in Bangrak Beach.

  • On September 13, 2005, temperatures climbed to 38°C (100°F), marking the warmest September day on record.
  • The coldest September day was on September 18, 1995, with a maximum of 26°C (79°F).
  • Bangrak Beach registered its coldest September night on September 25, 2012, with temperatures dropping to 20°C (68°F).

Best Places in Thailand in September

Find out more about the weather in Thailand and which places have the best travel conditions in this month. See all of Thailand in September →

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Legend perfect weather pleasant tolerable unpleasant poor
Perfect weather is subjective. On this map perfect weather has been defined with temperatures between 20°C (68°F) and 29°C (84°F) and not too much precipitation (less than 90 mm (3.5 in) a month).

What to Wear in Bangrak Beach in September

Warm but pleasant conditions in Bangrak Beach in September. Focus on lightweight, maybe with natural fabrics, cotton blend shirts, comfortable shorts, and breathable footwear. A light cover-up for sun protection is smart too. It's going to pour! Pack a good poncho and prepare for very wet conditions. With water temperatures around 29°C (84°F), swimming conditions are excellent. Pack your swimsuit, goggles, and maybe some water shoes. Sunglasses could come in handy during the sunnier parts of your trip.

What To Do in Bangrak Beach in September

We rated the following activities from 1 (least suitable) to 10 (best) to do.

Swimming
7/10
Cycling
7/10
Walking
7/10
Camping
7/10
Outdoor sports
7/10

Select a Month

Check the conditions for any month of the year.

For a detailed overview over the year and the best time to visit Thailand, check out our Bangrak Beach's climate page.

More climate data for Bangrak Beach