September weather forecast
George Town, Malaysia

September in George Town records the year's lowest mean wind speed of 6.1km/h (3.8mph). Despite the reduced breeze, the city continues to enjoy sustained daylight hours, allowing tourists to partake in outdoor activities. That said, a dip in sea temperature and lessened sunshine hours suggest the onset of the cooler season. The city experiences increased rainfall, marking the beginning of the wettest quarter of the year. September is the onset of a much welcome fresher climate, aided by slightly cooler temperatures.

Temperature

The transition into September shows a subtle variation to a still hot 30.7°C (87.3°F) from August's 31.2°C (88.2°F) in the average high-temperature. In the month of September, George Town records a consistent average low-temperature of 24.7°C (76.5°F).

Heat index

September's mean heat index is computed to be a sweltering 39°C (102.2°F). Greater preventive actions are needed, heat exhaustion and heat cramps are likely. Persistent activity could provoke heatstroke.
Heat index evaluations are typically in the context of light winds and shaded environments. Heat index values can rise by 15 Fahrenheit (8 Celsius) degrees when in direct sunlight.
Note: The heat index, also known as 'felt air temperature' or 'apparent temperature', offers an insight into how hot it feels when we factor in moisture content. The influence of weather is personal, differing among a variety of individuals based on differences in body mass, stature, and the level of physical activity. Take note that direct exposure to the sun can increase the felt temperature, possibly adding 15 Fahrenheit (8 Celsius) degrees to the heat index. Heat index values are quite important for babies and toddlers. Young ones are generally at greater risk than adults due to their limited sweating ability. In addition, their large skin surface relative to their small bodies and higher heat production from their activities add to their vulnerability.
The body's self-cooling mechanism is rooted in perspiration, where evaporating sweat cools down excessive warmth. Under conditions of increased relative humidity, the evaporation rate lessens, causing the body to retain more heat than under less humid conditions. When heat uptake goes beyond the body's cooling mechanisms, there's a surge in body temperature, posing health risks.

Humidity

In George Town, the average relative humidity in September is 77%.

Rainfall

In George Town, in September, during 27.1 rainfall days, 126mm (4.96") of precipitation is typically accumulated. In George Town, during the entire year, the rain falls for 302.5 days and collects up to 1490mm (58.66") of precipitation.

Sea temperature

In George Town, in September, the average water temperature is 29.5°C (85.1°F).
Note: Between the temperatures of 25°C (77°F) and 29°C (84.2°F), water is considered very warm, providing pleasure in water activities without discomfort over lengthy periods.

Daylight

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, in George Town, sunrise is at 7:06 am and sunset at 7:10 pm +08.

Sunshine

The average sunshine in September in George Town is 8.6h.

UV index

January through December, with an average maximum UV index of 7, are months with the highest UV index in George Town. January through December, with an average maximum UV index of 7, are months with the lowest UV index. A UV Index reading of 6 to 7 represents a high health hazard from unsafe exposure to UV radiation for the average person.
Note: The UV index of 7 in September translates into these instructions:
Implement preventive steps and embrace sun safety standards. Protection from skin and eye distress is compulsory. Avoid direct Sun exposure and seek shade from 10 a.m. to 4 p.m., the period of highest UV radiation. Remember, however, that not all shade structures offer full protection. Limit sun-induced ocular harm with sunglasses that feature UVA and UVB filtration. Heads up! UV intensity is amplified by reflections from water and sand.