September weather forecastCha-am, Thailand
September
Weather in September
September witnesses the year’s peak rainfall quantity at 165mm (6.5"), affirming the continuation of the monsoon trend in Cha-am. Greenery thrives, adding splendor to the city's aesthetics. While sea temperatures start to recede, they remain high enough to extend the beach season. The climate during this period fuses warmth and high humidity, intensified by the high precipitation and fading sunshine hours.Temperature
The beginning of September denotes an average high temperature of a still hot 32°C (89.6°F), aligning closely with August. An average minimum temperature of 24°C (75.2°F) is recorded during the month of September.Rainfall
In Cha-am, during September, the rain falls for 18 days and regularly aggregates up to 165mm (6.5") of precipitation. Throughout the year, there are 123 rainfall days, and 1182mm (46.54") of precipitation is accumulated.Sea temperature
In September, the average sea temperature in Cha-am is 29°C (84.2°F).Note: Swimming, diving, and other water endeavors at temperatures between 25°C (77°F) and 29°C (84.2°F) are considered enjoyable and satisfying for extended periods without discomfort.
Daylight
The average length of the day in September in Cha-am is 12h and 12min.On the first day of September, sunrise is at 06:09 and sunset at 18:30. On the last day of the month, sunrise is at 06:09 and sunset at 18:10 +07.
Sunshine
June through September, with an average of 5h of sunshine, are months with the least sunshine.UV index
February through October, with an average maximum UV index of 12, are months with the highest UV index in Cha-am. A UV Index reading of 11, and higher, represents an extreme threat to health from unsafe exposure to UV radiation for the average person.Note: During September, 12 as the daily maximum UV index converts into the following advice:
Put into effect every essential safeguard, as unprotected skin and eyes might burn instantly. Stay in the shade and avoid direct Sun exposure from 10 a.m. to 4 p.m., a time when UV radiation is at its strongest, and remember that parasols or canopies do not offer full protection. Loose clothes with a tight weave are optimal for safeguarding yourself against the Sun's rays. Despite the cloud cover, sunscreen with an SPF of at least 30 should be generously applied and reapplied, particularly after a swim or an outdoor workout. Be careful! The Sun's UV radiation is accentuated by reflecting off sand and water.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Cha-am, Thailand
- Average high temperature in September: 32°C
The warmest months (with the highest average high temperature) are April, May and June (33°C).
The months with the lowest average high temperature are January and December (29°C).
- Average low temperature in September: 24°C
The months with the highest average low temperature are April, May, June and August (25°C).
The coldest month (with the lowest average low temperature) is January (20°C).
Average rainfall in September
Cha-am, Thailand
- Average rainfall in September: 165mm
The wettest month (with the highest rainfall) is October (223mm).
The driest month (with the least rainfall) is January (12mm).
Average rainfall days in September
Cha-am, Thailand
- Average rainfall days in September: 18 days
The months with the highest number of rainy days are August and September (18 days).
The months with the least rainy days are January and December (2 days).
Average sea temperature in September
Cha-am, Thailand
- Average sea temperature in September: 29°C
The best months for swimming (with the highest average sea temperature) are April, May and June (30°C).
The coldest months (with the lowest average sea temperature) are January, February and December (28°C).
Average daylight in September /
Average sunshine in September
Cha-am, Thailand
- Average daylight in September: 12h and 12min
The month with the longest days is June (Average daylight: 12h and 54min).
The month with the shortest days is December (Average daylight: 11h and 24min).
- Average sunshine in September: 5h
The months with the most sunshine are January, February, March and December (Average sunshine: 9h).
The months with the least sunshine are June, July, August and September (Average sunshine: 5h).
Average UV index in September
Cha-am, Thailand
- Average UV index in September: 12
The months with the highest UV index are February, March, April, May, June, July, August, September and October (UV index 12).
The month with the lowest UV index is December (UV index 9).





