September weather forecast
Santo Tomas, Philippines

September, the first month of the autumn in Santo Tomas, is also a moderately hot month, with an average temperature ranging between max 29.5°C (85.1°F) and min 23.2°C (73.8°F).

Temperature

As September takes hold, the average high-temperature is a still moderately hot 29.5°C (85.1°F), nearly mirroring that of the previous month. During September, Santo Tomas experiences an average low-temperature of 23.2°C (73.8°F) at night.

Heat index

The heat index in September is appraised at a very hot 38°C (100.4°F). Heightened safety actions are necessary, heat cramps and heat exhaustion are probable. Persistent activity may lead to heatstroke.
In reference to the heat index, it's for places in shade and with a slight wind. Direct exposure to sunshine could lead to a heat index increase by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'feels like', is a composite of temperature and humidity figures to convey how warm it feels. Factors including metabolic differences, physical activity, and clothing are additional elements that influence the individual's temperature experience. Direct sunlight exposure should be noted as it has the potential to increase the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values hold particular importance for children. Kids often lack the knowledge about the necessity to take breaks and consume liquids. Thirst, as a late symptom of dehydration, necessitates the maintenance of hydration, particularly during enduring physical activities.
The body's innate mechanism to counteract overheating is through perspiration, as it leverages the cooling effects of sweat evaporation. With a high level of moisture in the air, the evaporation process becomes less efficient, preventing the body from cooling down efficiently and resulting in a sensation of overheating. As body temperatures escalate without effective heat release, one might face dehydration threats.

Humidity

The months with the highest humidity in Santo Tomas are July, September, October and December, with an average relative humidity of 87%.

Rainfall

In September, the rain falls for 26.5 days. Throughout September, 192mm (7.56") of precipitation is accumulated. In Santo Tomas, during the entire year, the rain falls for 300.8 days and collects up to 1601mm (63.03") of precipitation.

Daylight

In September, the average length of the day is 12h and 13min.
On the first day of September, sunrise is at 5:43 am and sunset at 6:06 pm. On the last day of the month, sunrise is at 5:44 am and sunset at 5:45 pm PST.

Sunshine

In September, the average sunshine in Santo Tomas is 7.5h.

UV index

The months with the highest UV index in Santo Tomas are March through June, August and September, with an average maximum UV index of 7. A UV Index of 6 to 7 symbolizes a high health hazard from exposure to the Sun's UV rays for average individuals.
Note: The UV index of 7 in September translates into these instructions:
Stick with precautions and abide by sun safety procedures. Evading sunburn is essential. The Sun's UV radiation is most potent between 10 a.m. and 4 p.m. Try to limit direct exposure to the Sun during this period. On days when the sun blazes, arm yourself with sunglasses that block UVA and UVB radiation.