September weather forecastGlan, Philippines
September
Weather in September
The first month of the autumn, September, is still a warm month in Glan, Philippines, with temperature in the range of an average low of 23.8°C (74.8°F) and an average high of 28.5°C (83.3°F).Temperature
September experiences an average high-temperature of a still warm 28.5°C (83.3°F), barely different from August's 28.2°C (82.8°F). September notes an average low temperature of 23.8°C (74.8°F) in Glan, subtly down from the daytime highs.Heat index
The heat index for September is computed to be a tropical 33°C (91.4°F). Exercise extra preventive actions, heat cramps and heat exhaustion are plausible. Continuous activity could result in heatstroke.The standards for the heat index are set for locations in shade and under light breezes. Direct sunlight might lead to a heat index increase by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'real feel', measures the perceived warmth when incorporating the humidity present in the air. An individual's perception of weather can be swayed by a variety of elements including metabolic differences, pregnancy status, and their level of physical exertion. Be mindful that being in direct sunlight might mean feeling hotter, with the heat index rising by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values hold particular significance for children. Young children typically face greater hazards than adults because they do not sweat as much. Their larger skin surface in comparison to their little bodies and the high heat production from their active nature compounds their vulnerability.
Humidity
The average relative humidity in September in Glan is 79%.Rainfall
In September, in Glan, the rain falls for 25.9 days. Throughout September, 105mm (4.13") of precipitation is accumulated. Throughout the year, in Glan, Philippines, there are 306.6 rainfall days, and 1410mm (55.51") of precipitation is accumulated.Sea temperature
In Glan, the average seawater temperature in September is 29.1°C (84.4°F).Note: For engaging in any water activities, temperatures from 25°C (77°F) to 29°C (84.2°F) are viewed as outstanding and exceptionally pleasing for prolonged durations.
Daylight
In Glan, the average length of the day in September is 12h and 9min.On the first day of the month, sunrise is at 5:31 am and sunset at 5:45 pm. On the last day of September, sunrise is at 5:26 am and sunset at 5:30 pm PST.
Sunshine
In Glan, the average sunshine in September is 8.6h.UV index
January through June, August through December, 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 hazard from exposure to the Sun's UV rays for the ordinary person.Note: A maximum UV index of 7 in September translates into the following recommendations:
Persist with precautions and heed sun safety advice. Prevention of sunburn is compulsory. Avoid direct exposure to the Sun between 10 a.m. and 4 p.m., the peak period for UV radiation, noting that objects like parasols or canopies might not offer complete sun protection. For holistic sun protection encompassing the eyes, ears, face, and neck, a wide-brim hat is key. Stay vigilant! UV rays get a boost in intensity due to sand and water reflections.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Glan, Philippines
- Average high temperature in September: 28.5°C
The warmest month (with the highest average high temperature) is April (29.7°C).
The month with the lowest average high temperature is August (28.2°C).
- Average low temperature in September: 23.8°C
The month with the highest average low temperature is May (24.8°C).
The coldest months (with the lowest average low temperature) are February, March, July and September (23.8°C).
Average pressure in September
Glan, Philippines
- Average pressure in September: 1009.9mbar
The month with the highest atmospheric pressure is February (1010.3mbar).
The months with the lowest atmospheric pressure are November and December (1008.8mbar).
Average wind speed in September
Glan, Philippines
- Average wind speed in September: 9.3km/h
The windiest month (with the highest average wind speed) is September (9.3km/h).
The calmest month (with the lowest average wind speed) is November (7.2km/h).
Average humidity in September
Glan, Philippines
- Average humidity in September: 79%
The months with the highest relative humidity are June, July and August (81%).
The months with the lowest relative humidity are February and March (77%).
Average rainfall in September
Glan, Philippines
- Average rainfall in September: 105mm
The wettest month (with the highest rainfall) is May (172mm).
The driest month (with the least rainfall) is February (57mm).
Average rainfall days in September
Glan, Philippines
- Average rainfall days in September: 25.9 days
The month with the highest number of rainy days is May (28.6 days).
The month with the least rainy days is February (19.1 days).
Average sea temperature in September
Glan, Philippines
- Average sea temperature in September: 29.1°C
The best month for swimming (with the highest average sea temperature) is October (29.7°C).
The coldest month (with the lowest average sea temperature) is February (28.3°C).
Average daylight in September /
Average sunshine in September
Glan, Philippines
- Average daylight in September: 12h and 12min
The month with the longest days is June (Average daylight: 12h and 30min).
The month with the shortest days is December (Average daylight: 11h and 48min).
- Average sunshine in September: 8h and 36min
The month with the most sunshine is February (Average sunshine: 8h and 54min).
The month with the least sunshine is June (Average sunshine: 7h and 42min).
Average sunshine days in September
Glan, Philippines
- Average sunshine days in September: 3.2 days
The month with the most sunshine days is February (7.5 days).
The month with the least sunshine days is May (1.7 days).
Average UV index in September
Glan, Philippines
- Average UV index in September: 7
The months with the highest UV index are January, February, March, April, May, June, August, September, October, November and December (UV index 7).
The month with the lowest UV index is July (UV index 6).
Average cloud cover in September
Glan, Philippines
- Average cloud cover in September: 40
The month with the most cloud cover is June (Cloud cover 48).
The month with the least cloud cover is February (Cloud cover 31).
Average visibility in September
Glan, Philippines
- Average visibility in September: 10km
The months with the highest visibility are January, February, March, April, June, July, August, September, October, November and December (10km).
The month with the lowest visibility is May (9km).





