September weather forecast
Boon Lay, Singapore

The weather in Boon Lay continues its gradual transition into the wet season in September. There's a decrease in rainfall to 75mm (2.95"), marking the driest month of the year. However, the persistently warm temperature and moderate wind speed ensure the city’s typical tropical climate is in place. The overall frequency of rain is also less, presenting residents with more opportunities to indulge in outdoor activities. While daylight hours taper off slightly, they do not affect routine activities drastically.

Temperature

The arrival of September in Boon Lay sees a recorded average high-temperature of a still tropical 30.7°C (87.3°F), showing little divergence from the previous month's conditions. Boon Lay encounters a negligible difference from daytime peaks throughout the September nights, with a low-temperature average of 25.8°C (78.4°F).

Heat index

The heat index for September is evaluated at a fiery hot 38°C (100.4°F). Use additional protective measures, heat cramps and heat exhaustion are possible outcomes. Continuous activity might lead to heatstroke.
Note that heat index values are valued for light wind and location in the shade. With direct sunlight, the heat index could increase by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'real feel', gauges the sensation of temperature factoring in the air's moisture content. Additional elements including metabolic differences, the level of physical activity, and attire have a role in shaping the individual's temperature perception. When directly under the sun, the weather's impact can intensify, possibly boosting the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are highly critical to babies and toddlers. Children often overlook the necessity for resting and fluid replenishment. Thirst is a late sign of dehydration - thus, it is critical to stay hydrated, especially during extended periods of physical activities.
The natural method the human body uses to remove excess heat is by perspiring and letting sweat evaporate. When the level of relative humidity is elevated, evaporation diminishes, causing more warmth to be retained in the body than in dry air. When body temperature rises due to excess heat gain beyond its removal capability, one might experience heat-related disorders.

Humidity

The average relative humidity in September in Boon Lay is 74%.

Rainfall

September is the month with the least rainfall in Boon Lay. Rain falls for 25.4 days and accumulates 75mm (2.95") of precipitation.

Daylight

In September, the average length of the day in Boon Lay is 12h and 7min.
On the first day of September in Boon Lay, Singapore, sunrise is at 07:00 and sunset at 19:09. On the last day of the month, sunrise is at 06:51 and sunset at 18:58 +08.

Sunshine

With an average of 9h of sunshine, September has the most sunshine of the year.

UV index

The months with the highest UV index are January through December, with an average maximum UV index of 7. January through December, with an average maximum UV index of 7, are months with the lowest UV index in Boon Lay. A UV Index estimate of 6 to 7 represents a high health vulnerability from unsafe exposure to UV radiation for the ordinary person.
Note: A maximum UV index of 7 in September translates into the following recommendations:
Fend off overexposure. Sun protection is vital. Try to minimize direct Sun exposure between 10 a.m. and 4 p.m., the peak period for UV radiation. Also note that objects like parasols or canopies might not provide complete sun protection. Clothes that are both tight-knit and comfortably loose are prime choices for sun protection.