September weather forecastMangahan, Philippines
September
Weather in September
The first month of the autumn, September, is still a hot month in Mangahan, Philippines, with an average temperature varying between 25°C (77°F) and 30.5°C (86.9°F).Temperature
September's presence marks an average high-temperature of a still hot 30.5°C (86.9°F), subtly varied from August's 30.2°C (86.4°F). Mangahan reports a consistent average low-temperature of 25°C (77°F) throughout September nights.Heat index
In September, the heat index is calculated to be a very hot 39°C (102.2°F). Adopt extra safety steps, risk of heat exhaustion and heat cramps is notable. Sustained activity might cause heatstroke.It is worth noting that heat index values are gauged for conditions in the shade and light breezes. Direct exposure to sunlight could raise the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'felt air temperature', measures the perceived warmth when incorporating the humidity present in the air. The perception of temperature can be subjective, varying based on activity and individual heat sensitivity, influenced by factors like wind, attire, and metabolic variations. It is essential to realize that direct sunlight can escalate the perceived temperature, increasing the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are extremely significant for children. Kids are usually more vulnerable than adults, given their lesser sweating ability. Along with their larger skin surface relative to their small stature and the excess heat due to their activity, their risk is amplified.
To prevent overheating and help regulate its internal temperature, the human body sweat and rely on the evaporation to cool down. Under conditions of high relative humidity, the rate of evaporation decreases. This results in the body retaining more heat than under conditions of dry air. The body faces dehydration threats when its cooling efforts are outpaced by excessive heat gain.
Humidity
In Mangahan, the average relative humidity in September is 80%.Rainfall
In September, the rain falls for 22.9 days. Throughout September, 129mm (5.08") of precipitation is accumulated. Throughout the year, in Mangahan, there are 203.7 rainfall days, and 849mm (33.43") of precipitation is accumulated.Daylight
In September, the average length of the day in Mangahan is 12h and 13min.On the first day of the month, sunrise is at 5:43 am and sunset at 6:07 pm. On the last day of September, in Mangahan, Philippines, sunrise is at 5:45 am and sunset at 5:45 pm PST.
Sunshine
The average sunshine in September in Mangahan, Philippines, is 8.3h.UV index
February through November, with an average maximum UV index of 7, are months with the highest UV index. A UV Index reading of 6 to 7 represents a high health vulnerability from unprotected exposure to Sun's UV rays for average individuals.Note: In September, a daily maximum UV index of 7 leads to the following instructions:
Take precautions against overexposure. Protection against sun damage is needed. Avoid direct Sun exposure from 10 a.m. to 4 p.m., a period when UV radiation is most intense, and remember that not all shade structures provide full protection. A hat with a broad brim is indispensable, filtering out up to half of UV rays.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Mangahan, Philippines
- Average high temperature in September: 30.5°C
The warmest month (with the highest average high temperature) is May (33°C).
The month with the lowest average high temperature is January (27.9°C).
- Average low temperature in September: 25°C
The month with the highest average low temperature is May (26.2°C).
The coldest month (with the lowest average low temperature) is February (22.9°C).
Average pressure in September
Mangahan, Philippines
- Average pressure in September: 1008.2mbar
The month with the highest atmospheric pressure is February (1013.4mbar).
The month with the lowest atmospheric pressure is August (1007.6mbar).
Average wind speed in September
Mangahan, Philippines
- Average wind speed in September: 8.3km/h
The windiest month (with the highest average wind speed) is January (12.3km/h).
The calmest month (with the lowest average wind speed) is May (7.5km/h).
Average humidity in September
Mangahan, Philippines
- Average humidity in September: 80%
The months with the highest relative humidity are July and August (81%).
The month with the lowest relative humidity is April (72%).
Average rainfall in September
Mangahan, Philippines
- Average rainfall in September: 129mm
The wettest month (with the highest rainfall) is July (157mm).
The driest month (with the least rainfall) is February (14mm).
Average rainfall days in September
Mangahan, Philippines
- Average rainfall days in September: 22.9 days
The month with the highest number of rainy days is July (24.1 days).
The month with the least rainy days is February (8.8 days).
Average daylight in September /
Average sunshine in September
Mangahan, 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 18min
The month with the most sunshine is April (Average sunshine: 11h and 24min).
The month with the least sunshine is January (Average sunshine: 6h and 0min).
Average sunshine days in September
Mangahan, Philippines
- Average sunshine days in September: 6.3 days
The month with the most sunshine days is April (12.6 days).
The month with the least sunshine days is July (6.2 days).
Average UV index in September
Mangahan, Philippines
- Average UV index in September: 7
The months with the highest UV index are February, March, April, May, June, July, August, September, October and November (UV index 7).
The months with the lowest UV index are January and December (UV index 6).
Average cloud cover in September
Mangahan, Philippines
- Average cloud cover in September: 45
The month with the most cloud cover is August (Cloud cover 50).
The month with the least cloud cover is April (Cloud cover 25).
Average visibility in September
Mangahan, Philippines
- Average visibility in September: 9km
The months with the highest visibility are February, March, April, May, June, November and December (10km).
The months with the lowest visibility are January, July, August, September and October (9km).





