September weather forecastTrece Martires, Philippines
September
Weather in September
September, the first month of the autumn in Trece Martires, is also a moderately hot month, with an average temperature varying between 24.7°C (76.5°F) and 29.4°C (84.9°F).Temperature
In September, the average high-temperature registers at a still warm 29.4°C (84.9°F), nearly identical to August's 29.3°C (84.7°F). Trece Martires sustains an average of approximately a still moderately hot 24.7°C (76.5°F) during September nights, with little variation from daytime highs.Heat index
The average heat index in September is calculated to be a fiery hot 37°C (98.6°F). Implement more preventive measures, heat cramps and heat exhaustion are probable. Heatstroke might result from extended activity.It is noted that heat index values are ascertained for locations in the shade and with gentle breezes. Direct sunlight has the potential to heighten heat index values by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'apparent temperature', is calculated by taking the relative humidity value for a specific location and factoring it into the air temperature reading. One's perception of weather can be shaped by other factors, involving metabolic differences, pregnancy, and physical exertion. With the sun shining directly, it's crucial to understand that it can increase the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values remain especially vital for babies and toddlers. Typically, children face more danger than adults as they usually perspire less. Their larger skin surface relative to their small bodies and increased heat output from their activities enhance their risk.
The body's inherent cooling system operates through perspiration, wherein evaporating sweat offsets excessive heat. When there is an excess of moisture in the atmosphere, the efficiency of the evaporation process is lessened, leading to less efficient body cooling and a sensation of overheating. Excessive heat gain, when not shed effectively by the body, can result in increasing body temperatures and related hazards.
Humidity
July through September, with an average relative humidity of 84%, are the most humid months.Rainfall
In Trece Martires, in September, it is raining for 23 days, with typically 56mm (2.2") of accumulated precipitation. In Trece Martires, during the entire year, the rain falls for 174.4 days and collects up to 414mm (16.3") of precipitation.Daylight
In September, the average length of the day is 12h and 13min.On the first day of September, sunrise is at 5:44 am and sunset at 6:08 pm. On the last day of the month, sunrise is at 5:46 am and sunset at 5:46 pm PST.
Sunshine
In September, the average sunshine is 8.2h.UV index
February through June, August through November, with an average maximum UV index of 7, are months with the highest UV index. A UV Index of 6 to 7 symbolizes a high health hazard from exposure to the Sun's UV rays for the average person.Note: The maximum daily UV index, 7 in September, converts into the following recommendations:
Take precautions and utilize sun safety practices. Protection against skin and eye damage is required. Seek shade and minimize exposure to direct Sun in a period between 10 a.m. and 4 p.m. when UV radiation is most intense; keep in mind that shade structures like parasols or canopies do not provide perfect sun protection. Sunglasses that ward off UVA and UVB rays play a pivotal role in reducing solar eye damage.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Trece Martires, Philippines
- Average high temperature in September: 29.4°C
The warmest month (with the highest average high temperature) is May (32.4°C).
The month with the lowest average high temperature is January (28°C).
- Average low temperature in September: 24.7°C
The month with the highest average low temperature is May (25.8°C).
The coldest month (with the lowest average low temperature) is February (23°C).
Average pressure in September
Trece Martires, Philippines
- Average pressure in September: 1008.2mbar
The month with the highest atmospheric pressure is February (1013mbar).
The month with the lowest atmospheric pressure is August (1007.7mbar).
Average wind speed in September
Trece Martires, Philippines
- Average wind speed in September: 8.9km/h
The windiest month (with the highest average wind speed) is January (13.9km/h).
The calmest month (with the lowest average wind speed) is May (7.5km/h).
Average humidity in September
Trece Martires, Philippines
- Average humidity in September: 84%
The months with the highest relative humidity are July, August and September (84%).
The month with the lowest relative humidity is April (72%).
Average rainfall in September
Trece Martires, Philippines
- Average rainfall in September: 56mm
The wettest month (with the highest rainfall) is August (97mm).
The driest month (with the least rainfall) is February (2mm).
Average rainfall days in September
Trece Martires, Philippines
- Average rainfall days in September: 23 days
The month with the highest number of rainy days is July (25.4 days).
The month with the least rainy days is February (4.3 days).
Average daylight in September /
Average sunshine in September
Trece Martires, Philippines
- Average daylight in September: 12h and 12min
The month with the longest days is June (Average daylight: 13h and 0min).
The month with the shortest days is December (Average daylight: 11h and 18min).
- Average sunshine in September: 8h and 12min
The month with the most sunshine is April (Average sunshine: 11h and 24min).
The month with the least sunshine is January (Average sunshine: 5h and 48min).
Average sunshine days in September
Trece Martires, Philippines
- Average sunshine days in September: 3.4 days
The month with the most sunshine days is March (25.2 days).
The month with the least sunshine days is September (3.4 days).
Average UV index in September
Trece Martires, Philippines
- Average UV index in September: 7
The months with the highest UV index are February, March, April, May, June, August, September, October and November (UV index 7).
The months with the lowest UV index are January, July and December (UV index 6).
Average cloud cover in September
Trece Martires, Philippines
- Average cloud cover in September: 46
The months with the most cloud cover are July and August (Cloud cover 50).
The month with the least cloud cover is April (Cloud cover 26).
Average visibility in September
Trece Martires, Philippines
- Average visibility in September: 10km
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (10km).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (10km).





