September weather forecast
Batu Caves, Malaysia

The first month of the autumn, September, is still a hot month in Batu Caves, Malaysia, with temperature in the range of an average low of 23.2°C (73.8°F) and an average high of 32.2°C (90°F).

Temperature

The average high-temperature for September is a still tropical 32.2°C (90°F), closely aligning with the temperature of the preceding month. Throughout September, an average low-temperature of 23.2°C (73.8°F) is experienced.

Heat index

For most parts of September, the heat index is computed to be a blisteringly hot 43°C (109.4°F). Be cautious: Heat exhaustion along with heat cramps are predicted. Heatstroke is a possible consequence of continuous physical effort.
Consider that heat index readings are for situations in the shade and light wind. A rise in the heat index by 15 Fahrenheit (8 Celsius) degrees may result from direct sunlight exposure.
Note: The heat index, also known as 'real feel' or 'feels like', determines the feeling of heat when you account for the relative humidity. An individual's perception of weather can be influenced by a variety of factors including metabolic differences, being pregnant, and their degree of physical exertion. Direct exposure to the sun's rays can enhance the felt temperature, increasing the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values hold particular significance for children. Young children typically face greater hazards than adults because they do not sweat as much. Their larger skin surface in comparison to their little bodies and the high heat production from their active nature compounds their vulnerability.
The physiological way the human body responds to excessive heat is by inducing perspiration, using sweat evaporation as a cooling mechanism. When relative humidity increases, the body's capacity to evaporate heat decreases, leading to a heightened sense of warmth. Elevated heat gain compared to the body's release capability poses risks of dehydration and potential overheating.

Humidity

In Batu Caves, the average relative humidity in September is 74%.

Rainfall

The month with the least rainfall is September, when the rain falls for 23.3 days and typically collects 62mm (2.44") of precipitation.

Daylight

In September, the average length of the day is 12h and 8min.
On the first day of the month, sunrise is at 7:07 am and sunset at 7:18 pm. On the last day of September, in Batu Caves, sunrise is at 7:00 am and sunset at 7:05 pm +08.

Sunshine

In Batu Caves, Malaysia, the average sunshine in September is 8.7h.

UV index

The months with the highest UV index in Batu Caves, Malaysia, are January through October and December, with an average maximum UV index of 7. A UV Index reading of 6 to 7 represents a high health vulnerability from unsafe exposure to UV radiation for average individuals.
Note: The average daily UV index of 7 in September transforms into the following instructions:
Resist extreme sun exposure. Guarding against solar damage is essential. 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. Always opt for UVA and UVB-resistant sunglasses on radiant days.