September weather forecast
Bayan Lepas, Malaysia

September, the first month of the autumn in Bayan Lepas, is still a warm month, with an average temperature varying between 29.9°C (85.8°F) and 25.3°C (77.5°F).

Temperature

In September, the average high-temperature is practically the same as in August - a warm 29.9°C (85.8°F). In September, the average low-temperature is 25.3°C (77.5°F).

Heat index

The average heat index in September is computed to be a very hot 36°C (96.8°F). Take extra precautions, as heat cramps and heat exhaustion are possible. Sustained activity may result in heatstroke.
Take into consideration that the heat index values are calculated for shade and light wind conditions. With exposure to direct sunlight, the heat index may be increased by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature', 'felt air temperature', 'real feel', or 'feels like', is what the temperature feels like to the human body when the air temperature is combined with the relative humidity. This effect is individual, with diverse people perceiving weather differently for numerous reasons (clothing, pregnancy, wind), and activity. Bear in mind that direct sunshine exposure increases weather impact, and may raise heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are especially crucial for babies and toddlers. Children are often less aware of the need to rest and re-hydrate. Thirst is a late sign of dehydration - it is vital to remain hydrated, particularly during prolonged physical activities.
To prevent overheating and help regulate its internal temperature, the human body sweat and rely on the evaporation to cool down. Under high air temperature and humidity (high heat index) conditions, perspiration is limited, and the perception of heat is increased. If the body can not disperse the excessive heat and body temperature reaches conditions of hyperthermia, above 37.5°C (99.5°F) to 38.3°C (100.9°F), thermal conditions are potentially life-threatening.

Humidity

In Bayan Lepas, the average relative humidity in September is 76%.

Rainfall

In Bayan Lepas, during September, the rain falls for 25.9 days and regularly aggregates up to 104mm (4.09") of precipitation. In Bayan Lepas, during the entire year, the rain falls for 281.9 days and collects up to 1180mm (46.46") of precipitation.

Daylight

In Bayan Lepas, the average length of the day in September is 12h and 9min.
On the first day of the month, sunrise is at 7:12 am and sunset at 7:25 pm. On the last day of September, sunrise is at 7:06 am and sunset at 7:11 pm +08.

Sunshine

In September, the average sunshine is 8.7h.

UV index

The months with the highest UV index are January through December, with an average maximum UV index of 7. The months with the lowest UV index in Bayan Lepas are January through December, with an average maximum UV index of 7. A UV Index of 6 to 7 symbolizes a high threat to health from exposure to the Sun's UV radiation for ordinary individuals.
Note: The average daily UV index of 7 in September transform into the following instructions:
Take precautions and adopt sun safety practices. Protection against sunburn is obliged. Seek shade and minimize exposure to direct Sun in a period between 10 a.m. and 4 p.m. when UV radiation is most intense; keep in mind that shade structures like parasols or canopies do not provide perfect sun protection. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes.