September weather forecast
Nong Khai, Thailand

September, the first month of the autumn in Nong Khai, is still a hot month, with temperature in the range of an average high of 31.9°C (89.4°F) and an average low of 24.1°C (75.4°F).

Temperature

The advent of September brings an average high-temperature of a still tropical 31.9°C (89.4°F), exhibiting minor difference from the previous month. Throughout September, Nong Khai records an average temperature of 24.1°C (75.4°F) at night.

Heat index

Throughout September, the heat index is computed to be a blazing hot 45°C (113°F). Stay watchful: Heat exhaustion along with heat cramps are likely. Ongoing effort may cause heatstroke.
One should consider that heat index numbers are for shaded settings and light wind. Exposure to direct sunshine can increase heat index values by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'felt air temperature', gives an indication of how one might feel in terms of heat after considering humidity. The influence of weather is personal, differing among individuals based on variations in body mass, stature, and the degree of physical exertion. When exposed to direct sunlight, it's possible for the heat index to increase by as much as 15 Fahrenheit (8 Celsius) degrees. Heat index values are highly critical for babies and toddlers. Youngsters generally face more threats than adults given their lesser ability to sweat. Coupled with their larger skin surface relative to their small bodies and higher heat production due to their activities, they are more endangered.
When faced with excessive heat, the human body begins to perspire, utilizing the cooling benefits of sweat evaporation. With higher relative humidity, the rate of evaporation is reduced, resulting in increased heat retention in the body compared to drier air. Overheating and potential dehydration arise when body heat gain eclipses its release capability.

Humidity

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

Rainfall

In Nong Khai, in September, it is raining for 18 days, with typically 257mm (10.12") of accumulated precipitation. Throughout the year, in Nong Khai, Thailand, there are 126 rainfall days, and 1608mm (63.31") of precipitation is accumulated.

Daylight

The average length of the day in September is 12h and 14min.
On the first day of September, sunrise is at 05:54 and sunset at 18:23. On the last day of the month, sunrise is at 05:59 and sunset at 17:58 +07.

Sunshine

June through September, with an average of 5h of sunshine, are months with the least sunshine.

UV index

March through September, with an average maximum UV index of 12, are months with the highest UV index in Nong Khai. A UV Index estimate of 11, and higher, represents an extreme health hazard from exposure to the Sun's UV radiation for average individuals.
Note: In September, a daily UV index of 12 turns into the following recommendations:
Carry out all important precautions, unprotected skin could get burns in no time. Avoid exposure to the Sun and try to stay in the shade between 10 a.m. and 4 p.m., when UV radiation is most potent, but be aware that parasols or canopies may not offer full protection. Arm yourself against UV rays' harm with protective apparel and UV-filtering shades. Prompt application of a broad-spectrum sunscreen, SPF 30+, is necessary after a swim or an outdoor workout and it should be re-applied every two hours.