September weather forecast
Batu Berendam, Malaysia

With the arrival of September in Batu Berendam, weather patterns shift slightly. Rainfall levels are at a lower quantity of 66mm (2.6") and are spread over around 25 rainy days. Sunshine continues to pour down for approximately 9 hours per day, maintaining balance with the steady 12-hour daylight. Though wind speeds are slightly lower, gusts of up to 11.1km/h (6.9mph) show a slight increase from the previous month. Amidst these slight fluctuations, pressure levels remain steady at 1009.6mb.

Temperature

September commences with an average high-temperature of a still hot 30.8°C (87.4°F), showing little deviation from August's 31.1°C (88°F). During the September nights, an average temperature of 25.2°C (77.4°F) is observed.

Heat index

The heat index value during September is calculated to be a fiery hot 38°C (100.4°F). Implement more safety precautions, heat cramps and heat exhaustion may happen. Persistent activity could induce heatstroke.
Keep in mind the heat index values are meant for areas in shade and with light wind. Being under direct sunlight might amplify the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'feels like', is calculated by taking the relative humidity value for a specific location and factoring it into the air temperature reading. Metabolic differences, pregnancy status, and the level of physical activity are additional factors influencing an individual's weather perception. Given the impact of direct sunlight, it's noteworthy that the felt temperature can rise by 15 Fahrenheit (8 Celsius) degrees. Heat index values are especially crucial for babies and toddlers. Young ones often do not realize the necessity to rest and replenish their fluids. Thirst is a delayed indication of dehydration - keeping hydrated, particularly in prolonged physical activity, is crucial.
To prevent overheating and help regulate its internal temperature, the human body sweat and rely on the evaporation to cool down. Higher relative humidity impedes evaporation, thus reducing heat dispersion from the body, culminating in a sensation of overheating. As the body gains more heat than it can dissipate, there's a risk of increasing temperatures and resultant overheating.

Humidity

The months with the lowest humidity are August through October, with an average relative humidity of 74%.

Rainfall

In Batu Berendam, in September, during 24.8 rainfall days, 66mm (2.6") of precipitation is typically accumulated. In Batu Berendam, during the entire year, the rain falls for 299.5 days and collects up to 1046mm (41.18") of precipitation.

Daylight

The average length of the day in September is 12h and 8min.
On the first day of September, sunrise is at 7:06 am and sunset at 7:15 pm. On the last day of the month, sunrise is at 6:57 am and sunset at 7:03 pm +08.

Sunshine

With an average of 9.1h of sunshine, September has the most sunshine of the year.

UV index

January through December, with an average maximum UV index of 7, are months with the highest UV index. January through December, with an average maximum UV index of 7, are months with the lowest UV index. A UV Index of 6 to 7 symbolizes a high threat to health from unsafe exposure to UV radiation for the ordinary person.
Note: In September, the maximum UV index of 7 translates into these guidelines:
Persist with safeguards and heed sun safety doctrines. Keeping sunburn at bay is of prime importance. It's important to stay in the shade and limit exposure to the sun from 10 a.m. to 4 p.m., when UV radiation is most intense, although remember that shade structures may not provide full sun protection. A hat with a broad brim is indispensable, filtering out up to half of UV rays.