September weather forecastBiliran, Philippines
September
Weather in September
September, the first month of the autumn in Biliran, is also a moderately hot month, with an average temperature varying between 29.4°C (84.9°F) and 25.9°C (78.6°F).Temperature
On starting September, Biliran exhibits an average high-temperature of a still moderately hot 29.4°C (84.9°F), identical to the previous month. September notes an average low temperature of 25.9°C (78.6°F), subtly down from the daytime highs.Heat index
September's average heat index is appraised at a sweltering 36°C (96.8°F). Exercise extra preventive actions, heat cramps and heat exhaustion are plausible. Continuous activity could result in heatstroke.Be advised, the heat index considers values for conditions in shade and with a light breeze. With exposure to direct sunshine, the heat index could climb by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'apparent temperature', binds temperature metrics with humidity values to give a sense of the actual warmth. 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. Keep aware, the sun, when shining directly, can intensify the heat experience, pushing the heat index up by 15 Fahrenheit (8 Celsius) degrees. Heat index values are primarily vital for children. Children often overlook the need for breaks and fluid intake. Thirst is a late-stage sign of dehydration - hence, it is necessary to stay hydrated, especially during extended periods of physical activities.
Perspiration is the human body's physiological response to high temperatures and is an attempt to lower body temperature through evaporation of sweat. Under high air temperature coupled with high humidity (high heat index), the body's perspiration is reduced, intensifying the sensation of heat. Overheating and potential dehydration arise when body heat gain eclipses its release capability.
Humidity
In September, the average relative humidity is 79%.Rainfall
In Biliran, in September, it is raining for 27.5 days, with typically 170mm (6.69") of accumulated precipitation. In Biliran, during the entire year, the rain falls for 266 days and collects up to 1334mm (52.52") of precipitation.Sea temperature
In September, the average sea temperature in Biliran is 29.2°C (84.6°F).Note: For engaging in water activities including swimming and diving, temperatures from 25°C (77°F) to 29°C (84.2°F) are perceived as perfect, providing pleasure for extended durations.
Daylight
In September, the average length of the day is 12h and 11min.On the first day of the month, sunrise is at 5:31 am and sunset at 5:52 pm. On the last day of September, sunrise is at 5:30 am and sunset at 5:32 pm PST.
Sunshine
In September, the average sunshine in Biliran is 8.2h.UV index
The months with the highest UV index are January through December, with an average maximum UV index of 7. January through December, with an average maximum UV index of 7, are months with the lowest UV index in Biliran. A UV Index estimate of 6 to 7 represents a high health vulnerability from unsafe exposure to UV radiation for the average person.Note: The average daily UV index of 7 in September transforms into the following instructions:
Steer clear of overexposure. Fair-skinned individuals can be scorched in less than 20 minutes. Avoid exposure to the Sun and try to stay in the shade between 10 a.m. and 4 p.m., when UV radiation is most potent, but be aware that parasols or canopies may not offer full protection. Always opt for UVA and UVB-resistant sunglasses on radiant days. Caution! The reflection of sand and water significantly increases the intensity of the Sun's UV radiation.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Biliran, 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 (27.8°C).
- Average low temperature in September: 25.9°C
The months with the highest average low temperature are May, June and August (26.3°C).
The coldest months (with the lowest average low temperature) are February and March (24.3°C).
Average pressure in September
Biliran, Philippines
- Average pressure in September: 1008.5mbar
The month with the highest atmospheric pressure is February (1012.1mbar).
The months with the lowest atmospheric pressure are July and August (1008.2mbar).
Average wind speed in September
Biliran, Philippines
- Average wind speed in September: 11.7km/h
The windiest month (with the highest average wind speed) is January (17km/h).
The calmest month (with the lowest average wind speed) is May (8.9km/h).
Average humidity in September
Biliran, Philippines
- Average humidity in September: 79%
The month with the highest relative humidity is January (83%).
The months with the lowest relative humidity are May, June and August (78%).
Average rainfall in September
Biliran, Philippines
- Average rainfall in September: 170mm
The wettest month (with the highest rainfall) is July (182mm).
The driest month (with the least rainfall) is February (32mm).
Average rainfall days in September
Biliran, Philippines
- Average rainfall days in September: 27.5 days
The month with the highest number of rainy days is July (29.1 days).
The month with the least rainy days is February (12.5 days).
Average sea temperature in September
Biliran, Philippines
- Average sea temperature in September: 29.2°C
The best month for swimming (with the highest average sea temperature) is June (29.9°C).
The coldest month (with the lowest average sea temperature) is February (26.8°C).
Average daylight in September /
Average sunshine in September
Biliran, Philippines
- Average daylight in September: 12h and 12min
The month with the longest days is June (Average daylight: 12h and 48min).
The month with the shortest days is December (Average daylight: 11h and 30min).
- Average sunshine in September: 8h and 12min
The month with the most sunshine is June (Average sunshine: 9h and 48min).
The month with the least sunshine is January (Average sunshine: 5h and 6min).
Average sunshine days in September
Biliran, Philippines
- Average sunshine days in September: 1.8 days
The month with the most sunshine days is February (13.8 days).
The month with the least sunshine days is July (1.4 days).
Average UV index in September
Biliran, Philippines
- Average UV index in September: 7
The months with the highest UV index are January, February, March, April, May, June, July, August, September, October, November and December (UV index 7).
The months with the lowest UV index are January, February, March, April, May, June, July, August, September, October, November and December (UV index 7).
Average cloud cover in September
Biliran, Philippines
- Average cloud cover in September: 42
The month with the most cloud cover is January (Cloud cover 55).
The month with the least cloud cover is May (Cloud cover 33).
Average visibility in September
Biliran, 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).
