The first month of the autumn, September
, is still a tropical month in Chaiyaphum
, with average temperature varying between 24.1°C (75.4°F) and 32°C (89.6°F).
In September, the average high-temperature is almost the same as in August
- a still hot 32°C (89.6°F). In Chaiyaphum, in September, the average low-temperature is 24.1°C (75.4°F).
The average heat index is computed to be an extremely hot 44.8°C (112.6°F). Beware
: Heat cramps and heat exhaustion are very likely. Heatstroke is imminent with prolonged activity.
Take into consideration that the heat index values are calculated for shade and light wind conditions. With exposure to direct sunlight, the heat index may be increased by up to 15 Fahrenheit (8 Celsius) degrees.Note
: The heat index, also known as 'feels like', 'felt air temperature', 'real feel', or 'apparent temperature', combines air temperature and relative humidity to represent a human perceived temperature equivalent. This effect is subjective, depending on the activity and individual's heat perception influenced by various reasons (pregnancy, wind, clothing). Be aware that direct exposure to sunlight increases heat impact and may raise the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly important for children. Children are often less aware of the need to rest and re-hydrate. Thirst is a late sign of dehydration - it is vital to remain hydrated, particularly during prolonged physical activities.
The human body normally cools itself by perspiration, as evaporated sweat carries heat away from the body. With a lot of moisture in the air, the evaporation process is not as effective, and the body does not cool down as efficiently, creating a perception of overheating. If the body can not disperse the excessive heat and body temperature reaches conditions of hyperthermia, above 37.5°C (99.5°F) to 38.3°C (100.9°F), thermal conditions are potentially life-threatening.
September is the most humid month in Chaiyaphum, with an average relative humidity of 81%.
The month with the most rainfall in Chaiyaphum is September when the rain falls for 19 days and typically aggregates up to 230mm (9.06") of precipitation.
In Chaiyaphum, the average length of the day in September is 12.2h.