September weather forecast
Chumphon, Thailand

As rains begin to subside a notch in September, the weather in Chumphon starts showing signs of the impending dry spell. The atmospheric conditions remain decidedly tropical, dominated by warmth and moisture. The period marks the end of peak rainfall while introducing the city dwellers to the slightly lower daily temperatures of autumn. The city witnesses a marginal dip in overall precipitation, tallying at 178mm (7.01") across 19 days of rainfall.

Temperature

The advent of September sees an average high temperature of a still hot 31.6°C (88.9°F) in Chumphon, matching the August's conditions. In September, the nighttime temperature lowers to an average of 24.1°C (75.4°F).

Heat index

During September, the heat index is estimated at a blistering 44°C (111.2°F). Remain cautious: Heat cramps along with heat exhaustion are foreseeable. Ongoing activity may precipitate heatstroke.
For clarity, heat index numbers account for light winds and areas under shade. Under direct sunshine, the heat index values might be elevated by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'felt air temperature', is a numerical representation of warmth when taking temperature and moisture levels into account. This effect is personal, influenced by the individual's physical activity and heat sensitivity, shaped by factors including wind, attire, and metabolic variations. Given the impact of direct sunlight, it's noteworthy that the felt temperature can rise by 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.
In response to overheating, the human body perspires to cool down, mainly through the evaporation of sweat. In situations of high air temperature combined with high humidity (significant heat index), the body's ability to perspire is reduced, heightening the sense of warmth. With body temperatures on the rise, inefficient heat shedding can lead to dehydration and its associated complications.

Humidity

In Chumphon, the average relative humidity in September is 83%.

Rainfall

In Chumphon, in September, it is raining for 19 days, with typically 178mm (7.01") of accumulated precipitation. Throughout the year, there are 172 rainfall days, and 1873mm (73.74") of precipitation is accumulated.

Daylight

In Chumphon, the average length of the day in September is 12h and 11min.
On the first day of the month, sunrise is at 06:13 and sunset at 18:32. On the last day of September, in Chumphon, sunrise is at 06:11 and sunset at 18:14 +07.