September weather forecast
Punggol, Singapore

In terms of temperature, September doesn’t show much of a difference compared to August, staying more or less steady at 31.6°C (88.9°F). A decrease in rainfall figures is noticed, making September a favourite among tourists visiting Punggol, Singapore. A comparative analysis with October reveals lower rainfall in September. The daylight and sunshine days observe an insignificant decrease while the average visibility rises, presenting the best of Singapore. The relatively calm wind paves the way for a comfortable, bright, warm September experience in Punggol, Singapore.

Temperature

The arrival of September brings an average high-temperature of a still hot 31.6°C (88.9°F), nearly identical to August's 31.3°C (88.3°F). Punggol's average low-temperature is measured at a warm 25.4°C (77.7°F) during September.

Heat index

In September, the average heat index is estimated at a blistering 40°C (104°F). Implement heightened safety measures - risk of heat exhaustion and heat cramps is increased. Prolonged activity may result in heatstroke.
In terms of the heat index, values are set with light wind and shade conditions in mind. 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 'feels like', is calculated by taking the relative humidity value for a specific location and factoring it into the air temperature reading. A person's impression of weather can be swayed by numerous aspects, among them metabolic variations, pregnancy, and activity levels. Being under direct sunshine can magnify the heat experience, possibly pushing up the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are extremely significant for children. Children often lack awareness of the importance of taking breaks and rehydrating. The feeling of thirst is a late indication of dehydration, so maintaining hydration, especially during long periods of physical activity, is critical.
The human body cools itself through perspiration, as excessive warmth is removed from the body through sweat evaporation. With an abundance of moisture present in the air, the process of evaporation becomes less effective, and the body fails to cool down as it should, leading to the sensation of overheating. As the body gains more heat than it can dissipate, there's a risk of increasing temperatures and resultant overheating.

Humidity

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

Rainfall

In Punggol, Singapore, during September, the rain falls for 19 days and regularly aggregates up to 34mm (1.34") of precipitation. Throughout the year, there are 250.9 rainfall days, and 733mm (28.86") of precipitation is accumulated.

Daylight

In Punggol, 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

September has the most sunshine of the year, with an average of 8.9h of sunshine.

UV index

January through November, with an average maximum UV index of 7, are months with the highest UV index. A UV Index value of 6 to 7 symbolizes a high threat to health from exposure to the Sun's UV rays for the ordinary person.
Note: The UV index of 7 during September leads to these advisories:
Resist overexposure. Safeguarding from solar damage is indispensable. The Sun's UV radiation is most potent between the hours of 10 a.m. and 4 p.m. Try to avoid direct sunlight during this time. Sunglasses providing both UVA and UVB protection are non-negotiable on sunlit days.