September weather forecast
Ranong, Thailand

September rings in the closing stages of the wet season in Ranong. The rainfall average descends to 647mm (25.47"), signalling a gradual retreat from the peak reached in the previous month. This fall in rainfall is coupled with a minor dip in temperature, providing much-needed relief from the monsoon extremities. Despite the slowly subsiding rains, humidity levels remain high, creating a balmy climate. Therefore, September masterfully orchestrates the segue from heavy rains to drier days.

Temperature

August and September, with an average high-temperature of 30.5°C (86.9°F), are the coldest months.

Heat index

The heat index value during September is estimated at an extremely hot 41°C (105.8°F). Adopt additional preventive measures, heat cramps and heat exhaustion are potential outcomes. Prolonged activity may trigger heatstroke.
When referencing the heat index, its values are suitable for shady environments and light breezes. The heat index has the potential to rise by 15 Fahrenheit (8 Celsius) degrees with direct sunshine exposure.
Note: The heat index, also known as 'apparent temperature' or 'real feel', is the outcome of merging air's temperature and its humidity metrics. Factors such as metabolic variation, pregnancy, and physical activity play a role in one's impression of weather. Consider that direct sun exposure can intensify the felt heat, adding potentially 15 Fahrenheit (8 Celsius) degrees to the heat index. Heat index values are extremely significant for babies and toddlers. Young people are generally more susceptible than adults because they perspire less. Furthermore, their proportionally larger skin surface to their petite bodies and the increased heat output from their actions add to the risk.
To prevent overheating and help regulate its internal temperature, the human body sweat and rely on the evaporation to cool down. Excessive relative humidity disturbs the body's typical cooling process by reducing evaporation, leading to a decrease in body cooling rate and an increase in the sensation of warmth. 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 months with the highest humidity are August and September, with an average relative humidity of 86%.

Rainfall

In Ranong, in September, during 26 rainfall days, 647mm (25.47") of precipitation is typically accumulated. In Ranong, during the entire year, the rain falls for 199 days and collects up to 4067mm (160.12") of precipitation.

Daylight

The average length of the day in September is 12h and 11min.
On the first day of September, sunrise is at 06:16 and sunset at 18:34. On the last day of the month, sunrise is at 06:14 and sunset at 18:16 +07.