September weather forecast
Sai Ngam, Thailand

The first month of the autumn, September, is still a hot month in Sai Ngam, Thailand, with an average temperature fluctuating between 30.8°C (87.4°F) and 23.5°C (74.3°F).

Temperature

The arrival of September sees an average high-temperature of a still hot 30.8°C (87.4°F), hardly diverging from August's 30.6°C (87.1°F). Sai Ngam records an average temperature drop to a warm 23.5°C (74.3°F) in September.

Heat index

The heat index for September is estimated at a blistering 42°C (107.6°F). Take additional safety steps, risk of heat exhaustion and heat cramps is notable. Prolonged activity may cause heatstroke.
Be advised, the heat index considers values for conditions in shade and with a light breeze. The presence of direct sunlight can raise the heat index values by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'felt air temperature', is a measure that combines air temperature and relative humidity into a single value that indicates how hot the weather feels. Depending on the activity and the individual's heat perception, which may vary due to factors including wind, clothing, and metabolic variations, this effect remains subjective. The sun, when shining directly, can have a significant impact on the perceived temperature, increasing the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are of high significance for children. Children frequently underestimate the importance of resting and drinking fluids. Thirst is a symptom of advanced dehydration - hence the need to hydrate regularly, especially during protracted physical exercises.
In response to overheating, the human body perspires to cool down, mainly through the evaporation of sweat. An increase in relative humidity retards evaporation, subsequently reducing the body's heat removal rate and leading to a sensation of being overly warm. Overheating can ensue when the body accumulates more heat than it can release, and dehydration severity may vary.

Humidity

September is the most humid month in Sai Ngam, with an average relative humidity of 84%.

Rainfall

In Sai Ngam, Thailand, during September, the rain falls for 27.5 days and regularly aggregates up to 168mm (6.61") of precipitation. Throughout the year, in Sai Ngam, there are 209.2 rainfall days, and 1112mm (43.78") of precipitation is accumulated.

Daylight

The average length of the day in September is 12h and 14min.
On the first day of the month, sunrise is at 06:07 and sunset at 18:33. On the last day of September, in Sai Ngam, sunrise is at 06:10 and sunset at 18:10 +07.

Sunshine

The average sunshine in September in Sai Ngam is 7.8h.

UV index

The average daily maximum UV index in September is 7. A UV Index estimate of 6 to 7 represents a high threat to health from exposure to the Sun's UV rays for ordinary individuals.
Note: An average UV index of 7 in September transforms into this advice:
Avoid overexposure. Fair-skinned individuals can burn in under 20 minutes. Stay in the shade and limit direct Sun exposure from 10 a.m. to 4 p.m., a time when UV radiation is particularly strong. Remember, however, that shade structures may not provide complete protection. A hat with a generous brim can prevent nearly 50% of UV rays from reaching your eyes.