September weather forecast
Seletar, Singapore

September marks an eventual decrease in heat with the longest sunshine duration of the year at 8.9 hours per day extending sunlight activities. This month the average low temperature drops to 25.4°C (77.7°F) and the rainfall is moderate. The winds blow at regular speeds creating a comfortable atmosphere for enjoying strolls in the park. Despite being the month with the lowest rainfall, occasional showers break the monotony of the sun, keeping the weather pleasant. High visibility and low humidity conditions allow tourists to explore the cityscape without discomfort during this time.

Temperature

The arrival of September denotes a barely perceptible change in the average high-temperatures to a still hot 31.6°C (88.9°F) from August's 31.3°C (88.3°F). Seletar reports an average low-temperature of 25.4°C (77.7°F) during the nights of September.

Heat index

The average heat index in September is evaluated at a blisteringly hot 40°C (104°F). Incorporate additional preventive steps, heat exhaustion and heat cramps are possible. Long-lasting activity may cause heatstroke.
Note that heat index values are valued for light wind and location in the shade. Direct exposure to sunshine could lead to a heat index increase by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'real feel', is a composite of temperature and humidity figures to convey how warm it feels. Elements such as metabolic variations, pregnancy, and physical exertion can influence one's weather perception. Keep in mind that direct sunshine exposure can amplify the weather's effects, possibly increasing the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are primarily vital for children. Youngsters generally face more threats than adults given their lesser ability to sweat. Coupled with their larger skin surface relative to their small bodies and higher heat production due to their activities, they are more endangered.
Evaporation of sweat is the main factor behind the cooling effect of perspiration in the human body. With high air temperature and humidity (high heat index) conditions, sweat production is restricted, leading to an amplified perception of heat. When body temperature rises due to excess heat gain beyond its removal capability, one might experience heat-related disorders.

Humidity

With an average relative humidity of 73%, September is the least humid month in Seletar.

Rainfall

In Seletar, Singapore, in September, it is raining for 19 days, with typically 34mm (1.34") of accumulated precipitation. Throughout the year, in Seletar, there are 250.9 rainfall days, and 733mm (28.86") of precipitation is accumulated.

Daylight

In Seletar, the average length of the day in September is 12h and 7min.
On the first day of the month, sunrise is at 07:00 and sunset at 19:08. On the last day of September, sunrise is at 06:51 and sunset at 18:57 +08.

Sunshine

The month with the most sunshine is September, with an average of 8.9h of sunshine.

UV index

The months with the highest UV index in Seletar are January through November, with an average maximum UV index of 7. A UV Index value of 6 to 7 symbolizes a high health hazard from exposure to the Sun's UV radiation for average individuals.
Note: A typical high UV index of 7 in September suggests the following recommendations:
Adopt measures and apply sun safety strategies. Shielding from skin and eye damage is necessary. The Sun's UV radiation is at its strongest between the hours of 10 a.m. and 4 p.m. Minimize direct exposure to the sun during this period. Shield yourself from the harmful effects of UV radiation with sun-protective attire, a hat, and quality sunglasses.