September
Weather in September
September sees the peak of the rainy season in Ko Lanta. Rainfall reaches its annual maximum at 330mm (12.99") spread across 22 days. Subsequent flooding is common during this period, causing widespread saturation of soil and local water bodies. The temperature continues its declining trend, while the shortened daylight discourages outdoor activities. October will see a notable decline in rainfall and a small increase in temperature.
Know that the heat index computations account for shaded terrains and slight winds. Exposure to the direct sun might augment heat index values by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'feels like', quantifies the warmth felt when relative humidity is considered. This effect tends to be personal, with the weather perception differing among individuals due to variations in body mass, height, and exertion. One should be aware that direct sunshine can amplify the perceived temperature, raising the heat index by as much as 15 Fahrenheit (8 Celsius) degrees. Heat index values are quite important for babies and toddlers. Young ones often disregard the necessity to rest and hydrate. Thirst usually indicates advanced dehydration - hence, it is key to stay hydrated, particularly during ongoing physical activities.
Perspiration, followed by sweat evaporation, is the human body's chief method to maintain a balanced temperature. Relative humidity in excess curtails evaporation, therefore reducing heat dissipation from the body, leading to feelings of excess heat. With body temperatures on the rise, inefficient heat shedding can lead to dehydration and its associated complications.
On the first day of the month, sunrise is at 06:15 and sunset at 18:31. On the last day of September, sunrise is at 06:11 and sunset at 18:15 +07.
Temperature
September, recording an average high temperature of 30.8°C (87.4°F) and a low temperature of 24.8°C (76.6°F), is Ko Lanta's coldest month.Heat index
Throughout September, the heat index is computed to be a scorching 42°C (107.6°F). Emphasize additional safety, risk of heat cramps and heat exhaustion is high. Continuous activity might result in heatstroke.Know that the heat index computations account for shaded terrains and slight winds. Exposure to the direct sun might augment heat index values by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'feels like', quantifies the warmth felt when relative humidity is considered. This effect tends to be personal, with the weather perception differing among individuals due to variations in body mass, height, and exertion. One should be aware that direct sunshine can amplify the perceived temperature, raising the heat index by as much as 15 Fahrenheit (8 Celsius) degrees. Heat index values are quite important for babies and toddlers. Young ones often disregard the necessity to rest and hydrate. Thirst usually indicates advanced dehydration - hence, it is key to stay hydrated, particularly during ongoing physical activities.
Perspiration, followed by sweat evaporation, is the human body's chief method to maintain a balanced temperature. Relative humidity in excess curtails evaporation, therefore reducing heat dissipation from the body, leading to feelings of excess heat. With body temperatures on the rise, inefficient heat shedding can lead to dehydration and its associated complications.
Humidity
May through November, with an average relative humidity of 85%, are the most humid months.Rainfall
September is the month with the most rainfall. Rain falls for 22 days and accumulates 330mm (12.99") of precipitation.Daylight
In September, the average length of the day in Ko Lanta is 12h and 10min.On the first day of the month, sunrise is at 06:15 and sunset at 18:31. On the last day of September, sunrise is at 06:11 and sunset at 18:15 +07.
Updated: Jun 28, 2024
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the coldest time of year?
Ko Lanta notes the coldest temperatures in September, with a average high of 30.8°C (87.4°F) and a low of 24.8°C (76.6°F).
How hot is September?
During September, Ko Lanta experiences an average high-temperature of 30.8°C (87.4°F) and a low-temperature of 24.8°C (76.6°F). The average heat index (a.k.a. 'real feel', 'feels like'), which takes the relative humidity and factors it into the air temperature reading, in September is computed to be 42°C (107.6°F).
What are the most humid months?
May through November, with an average relative humidity of 85%, are most humid months.
What is the average humidity in September?
In September, the average relative humidity is 85%.
What is the wettest month?
September is the month with the most rainfall. Rain falls for 22 days and accumulates 330mm (12.99") of precipitation.
How much does it rain in September?
In Ko Lanta, in September, during 22 rainfall days, 330mm (12.99") of precipitation is typically accumulated.
How many hours of daylight does Ko Lanta have in September?
In September, the average day length is 12h and 10min.
When are sunrise and sunset in September in Ko Lanta?
In September, on the first day of the month, sunrise is at 06:15 and sunset at 18:31. On the last day of the month, sunrise is at 06:11 and sunset at 18:15 +07.
Average temperature in September
Ko Lanta, Thailand
- Average high temperature in September: 30.8°C
The warmest month (with the highest average high temperature) is March (34.1°C).
The month with the lowest average high temperature is September (30.8°C).
- Average low temperature in September: 24.8°C
The month with the highest average low temperature is June (25.4°C).
The coldest month (with the lowest average low temperature) is December (23.6°C).
Average humidity in September
Ko Lanta, Thailand
- Average humidity in September: 85%
The months with the highest relative humidity are May, June, July, August, September, October and November (85%).
The month with the lowest relative humidity is February (74%).
Average rainfall in September
Ko Lanta, Thailand
- Average rainfall in September: 330.3mm
The wettest month (with the highest rainfall) is September (330.3mm).
The driest month (with the least rainfall) is January (14.9mm).
Average rainfall days in September
Ko Lanta, Thailand
- Average rainfall days in September: 22 days
The month with the highest number of rainy days is September (22 days).
The month with the least rainy days is February (2 days).
Average daylight in September
Ko Lanta, Thailand
- Average daylight in September: 12h and 1min
The month with the longest days is June (Average daylight: 12h and 36min).
The month with the shortest days is December (Average daylight: 11h and 42min).
