September brings about a gradual decline in the rainfall, compared to the heavy showers of
August. This shift in weather leads to shorter showers, escalating the appeal of
Mae Hong Son. Even though there's a slight decrease in sunshine hours, days are still long and full of light. The city experiences a blend of warmth and cool breezes, making it a wonderful time to admire Mae Hong Son. A walk along the city's paths in the post-rain ambiance is a soothing experience worth experiencing.
Temperature
The advent of September in Mae Hong Son denotes an average high-temperature of a still hot 32.8°C (91°F), subtly different from August's 32°C (89.6°F). In September, the average low-temperature in Mae Hong Son records at a warm 23°C (73.4°F) during the nights.
Heat index
The heat index for September is calculated to be a burning hot 49°C (120.2°F).
Heed: Expect heat cramps and heat exhaustion. Continued action may cause heatstroke.
Understand that the heat index values take into account shaded locations and mild winds. The heat index values could be amplified by up to 15 Fahrenheit (8 Celsius) degrees in direct sunlight.
Note: The heat index, also known as 'apparent temperature' or 'feels like', is an indicator that blends the effects of temperature and humidity to depict perceived warmth. Elements of metabolic variation, physical activity, and clothing contribute to the effect of temperature on an individual. When you're directly under the sun's rays, remember that the heat index may surge by 15 Fahrenheit (8 Celsius) degrees. Heat index values are extremely significant for babies and toddlers. Young children are more at risk than adults since they tend to sweat less. Moreover, their large skin surface in proportion to their small bodies and the high heat production due to their activities contribute to their vulnerability.
The physiological way the human body responds to excessive heat is by inducing perspiration, using sweat evaporation as a cooling mechanism. Under conditions of high relative humidity, the rate of evaporation decreases. This results in the body retaining more heat than under conditions of dry air. When heat surpasses the body's release mechanisms, dehydration and overheating risks become pronounced.
Humidity
August and September, with an average relative humidity of 83%, are the most humid months in Mae Hong Son.
Rainfall
In Mae Hong Son,
Thailand, during September, the rain falls for 20 days and regularly aggregates up to 199mm (7.83") of precipitation. In Mae Hong Son, during the entire year, the rain falls for 138 days and collects up to 1292mm (50.87") of precipitation.
Daylight
In Mae Hong Son, the average length of the day in September is 12h and 15min.
On the first day of the month, sunrise is at 06:13 and sunset at 18:43. On the last day of September, in Mae Hong Son, sunrise is at 06:18 and sunset at 18:17 +07.
Sunshine
The months with the least sunshine in Mae Hong Son are
June through September, with an average of 5h of sunshine.
UV index
The months with the highest UV index in Mae Hong Son are
March through September, with an average maximum UV index of 12. A UV Index of 11, and more, symbolizes an extreme health hazard from exposure to the Sun's UV radiation for ordinary individuals.
Note: A maximum high UV index of 12 in September translates into the following recommendations:
Implement all key precautions. Warding off sun damage is critical. 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. Clothes that are both tight-knit and comfortably loose are prime choices for sun protection. Broad-spectrum SPF 30+ sunscreen must be generously applied and reapplied every two hours or post any outdoor activity or swim.