Chanthaburi
Thailand
Long-term weather forecast
Long-term weather forecast

September weather forecast and climate
Chanthaburi, Thailand

September, the first month of the autumn, in Chanthaburi, is still a tropical month, with average temperature ranging between min 24.4°C (75.9°F) and max 31.4°C (88.5°F).

Temperature

In September, the average high-temperature is relatively the same as in August - a still tropical 31.4°C (88.5°F). In Chanthaburi, the average low-temperature is 24.4°C (75.9°F).

Heat index

In September, the average heat index is calculated to an extremely hot 44.6°C (112.3°F). Be wary - heat exhaustion and heat cramps are highly anticipated. With continued activity, heatstroke is very likely.
Take into consideration that the heat index values are calculated for shade and light wind conditions. Exposure to direct sunshine can increase heat index values by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature', 'real feel', 'feels like', or 'apparent temperature', is a calculated temperature value of how hot it feels when the moisture in the air is factored in. This effect is subjective, depending on the activity and individual's heat perception influenced by various reasons (wind, metabolic differences, clothing). Bear in mind that direct sunshine exposure increases weather impact, and may raise heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are especially crucial for babies and toddlers. Young children are generally more endangered than adults, as they usually less sweat. And also, due to larger skin surface relative to their small bodies and higher heat production as a result of their activity.
To prevent overheating and help regulate its internal temperature, the human body sweat and rely on the evaporation to cool down. High relative humidity reduces the evaporation rate, resulting in a lower heat removal rate from the body, causing the perception of being overheated. When heat gain surpasses the level the body can shed, body temperature begins to increase, and consequently, overheating and dehydration can occur, with varying severity.

Humidity

The most humid month in Chanthaburi is September, with an average relative humidity of 86%.

Rainfall

In Chanthaburi, during 25 rainfall days, 497.6mm (19.6") of precipitation is typically accumulated. Throughout the year, in Chanthaburi, there are 171 rainfall days, and 2994.2mm (117.9") of precipitation is accumulated.

Daylight

In September, the average length of the day is 12.2h.

What is the temperature in September in Chanthaburi?

In September, in Chanthaburi, the average high-temperature is 31.4°C (88.5°F), and the average low-temperature is 24.4°C (75.9°F). In September, the average heat index (a.k.a. 'felt air temperature', 'real feel'), that calculates temperature value influenced by the moisture in the air, is estimated at 44.6°C (112.3°F).

What is the most humid month in Chanthaburi?

With an average relative humidity of 86%, September is the most humid month in Chanthaburi.

What is the average humidity in September in Chanthaburi?

In September, the average relative humidity in Chanthaburi is 86%.

How many days does it rain in September in Chanthaburi?

In Chanthaburi, in September, during 25 rainfall days, 497.6mm (19.6") of precipitation is typically accumulated.

How many hours of daylight does Chanthaburi have in September?

The average length of the day in September is 12.2h.
Average temperature in September - Chanthaburi, Thailand
  • Average high temperature in September: 31.4°C

The warmest month (with the highest average high temperature) is April (33.9°C).
The month with the lowest average high temperature is August (31.2°C).

  • Average low temperature in September: 24.4°C

Months with the highest average low temperature are May and June (25.1°C).
The coldest month (with the lowest average low temperature) is December (21.4°C).

Average humidity in September - Chanthaburi, Thailand
  • Average humidity in September: 86%

The month with the highest relative humidity is September (86%).
The month with the lowest relative humidity is December (66%).

Average rainfall in September - Chanthaburi, Thailand
  • Average rainfall in September: 497.6mm

The wettest month (with the highest rainfall) is June (512.6mm).
The driest month (with the lowest rainfall) is December (6.8mm).

Average rainfall days in September - Chanthaburi, Thailand
  • Average rainfall days in September: 25 days

The month with the highest number of rainy days is August (26 days).
Months with the lowest number of rainy days are January and December (2 days).

Average daylight in September - Chanthaburi, Thailand
  • Average daylight in September: 12.2h

The month with the longest days is June (Average daylight: 12.9h).
The month with shortest days is December (Average daylight: 11.4h).