September weather forecastGapo, Philippines
September
Weather in September
September, the first month of the autumn in Gapo, is still a warm month, with temperature in the range of an average high of 29.4°C (84.9°F) and an average low of 25.3°C (77.5°F).Temperature
The transition from August to September sees average high-temperatures adjusting to a still warm 29.4°C (84.9°F), from a not significantly different 29.6°C (85.3°F). During the month of September, Gapo's average nighttime temperature closely mirrors its daytime counterpart, at a still warm 25.3°C (77.5°F).Heat index
The heat index in September is appraised at a fiery hot 36°C (96.8°F). Take more preventive steps, risk of heat exhaustion and heat cramps is elevated. Long activity may culminate in heatstroke.Understand that the heat index values take into account shaded locations and mild winds. Heat index values may surge by up to 15 Fahrenheit (8 Celsius) degrees in the presence of direct sunlight.
Note: The heat index, also known as 'apparent temperature' or 'feels like', measures the perceived warmth when incorporating the humidity present in the air. The impact of weather on an individual can be subjective, affected by the person's activity and heat perception, which can vary due to elements including wind, clothing, and metabolic differences. Direct exposure to the sun's rays can enhance the felt temperature, increasing the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are especially vital to children. Young children are generally more endangered than adults, as they usually less sweat. And also, due to larger skin surface relative to their small bodies and higher heat production as a result of their activity.
The human body normally cools itself by perspiration, as evaporated sweat carries heat away from the body. An upsurge in relative humidity affects normal body cooling mechanisms by slowing evaporation, hence reducing the rate at which the body cools and intensifying the perception of heat. With body temperatures on the rise, inefficient heat shedding can lead to dehydration and its associated complications.
Humidity
In Gapo, the average relative humidity in September is 82%.Rainfall
In Gapo, during September, the rain falls for 22.7 days and regularly aggregates up to 142mm (5.59") of precipitation. In Gapo, during the entire year, the rain falls for 253 days and collects up to 1276mm (50.24") of precipitation.Daylight
In September, the average length of the day is 12h and 12min.On the first day of the month, sunrise is at 5:34 am and sunset at 5:56 pm. On the last day of September, in Gapo, sunrise is at 5:34 am and sunset at 5:35 pm PST.
Sunshine
In Gapo, the average sunshine in September is 8h.UV index
The months with the highest UV index are February through November, with an average maximum UV index of 7. A UV Index reading of 6 to 7 represents a high health risk from exposure to the Sun's UV rays for average individuals.Note: The UV index of 7 during September leads to these advisories:
Continue precautions and advocate sun safety advice. Deterrence of sunburn is indispensable. Avoid direct sunlight between the hours of 10 a.m. and 4 p.m., when UV radiation is at its peak. Keep in mind that shade structures may not provide complete protection. Limit sun-induced ocular harm with sunglasses that feature UVA and UVB filtration.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Gapo, Philippines
- Average high temperature in September: 29.4°C
The warmest month (with the highest average high temperature) is May (30.9°C).
The month with the lowest average high temperature is January (26.8°C).
- Average low temperature in September: 25.3°C
The month with the highest average low temperature is June (25.9°C).
The coldest month (with the lowest average low temperature) is February (23.5°C).
Average pressure in September
Gapo, Philippines
- Average pressure in September: 1008.1mbar
The month with the highest atmospheric pressure is February (1012.9mbar).
The month with the lowest atmospheric pressure is August (1007.7mbar).
Average wind speed in September
Gapo, Philippines
- Average wind speed in September: 11km/h
The windiest month (with the highest average wind speed) is January (15.5km/h).
The calmest month (with the lowest average wind speed) is May (8.5km/h).
Average humidity in September
Gapo, Philippines
- Average humidity in September: 82%
The months with the highest relative humidity are January and December (84%).
The month with the lowest relative humidity is May (78%).
Average rainfall in September
Gapo, Philippines
- Average rainfall in September: 142mm
The wettest month (with the highest rainfall) is December (212mm).
The driest month (with the least rainfall) is April (27mm).
Average rainfall days in September
Gapo, Philippines
- Average rainfall days in September: 22.7 days
The month with the highest number of rainy days is December (25.8 days).
The month with the least rainy days is April (15.3 days).
Average daylight in September /
Average sunshine in September
Gapo, Philippines
- Average daylight in September: 12h and 12min
The month with the longest days is June (Average daylight: 12h and 54min).
The month with the shortest days is December (Average daylight: 11h and 24min).
- Average sunshine in September: 8h and 0min
The month with the most sunshine is May (Average sunshine: 10h and 54min).
The month with the least sunshine is January (Average sunshine: 4h and 30min).
Average sunshine days in September
Gapo, Philippines
- Average sunshine days in September: 6.4 days
The month with the most sunshine days is May (12.8 days).
The month with the least sunshine days is December (3.1 days).
Average UV index in September
Gapo, 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
Gapo, Philippines
- Average cloud cover in September: 42
The month with the most cloud cover is January (Cloud cover 59).
The month with the least cloud cover is May (Cloud cover 29).
Average visibility in September
Gapo, 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).





