September weather forecastDumanjug, Philippines
September
Weather in September
September, the first month of the autumn in Dumanjug, is also a moderately hot month, with temperature in the range of an average high of 29.9°C (85.8°F) and an average low of 25.1°C (77.2°F).Temperature
The initiation of September records an average high-temperature of a moderately hot 29.9°C (85.8°F), displaying a near consistency with the previous month. Dumanjug documents an average low-temperature of 25.1°C (77.2°F) for the nights of September.Heat index
The heat index in September is estimated at a sweltering 37°C (98.6°F). Undertake additional precautions, heat cramps and heat exhaustion could happen. Heatstroke could occur from sustained activity.Records show heat index calculations are tailored for shaded regions and mild winds. A rise in the heat index by 15 Fahrenheit (8 Celsius) degrees may result from direct sunlight exposure.
Note: The heat index, also known as 'real feel' or 'feels like', is a value derived by merging air temperature with the humidity to convey how the climate feels. A person's impression of weather can be swayed by numerous aspects, among them metabolic variations, pregnancy, and activity levels. 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 are highly critical to babies and toddlers. In general, children are more at risk than adults because they sweat less. Furthermore, the large skin surface compared to their small bodies and the high heat production due to their actions contribute to this vulnerability.
The human body has a built-in cooling mechanism through perspiration; evaporating sweat dissipates the excess heat. With high air temperature and humidity (high heat index) conditions, sweat production is restricted, leading to an amplified perception of heat. Exceeding the body's heat disposal threshold results in a rise in body temperature and potential thermal disorders.
Humidity
The average relative humidity in September is 77%.Rainfall
In Dumanjug, in September, it is raining for 18.5 days, with typically 68mm (2.68") of accumulated precipitation. In Dumanjug, during the entire year, the rain falls for 242 days and collects up to 945mm (37.2") of precipitation.Sea temperature
In Dumanjug, in September, the average water temperature is 29.2°C (84.6°F).Note: For any water activity, temperatures between 25°C (77°F) and 29°C (84.2°F) are deemed excellent and extremely satisfying for enduring periods.
Daylight
The average length of the day in September is 12h and 11min.On the first day of the month, sunrise is at 5:36 am and sunset at 5:55 pm. On the last day of September, in Dumanjug, sunrise is at 5:34 am and sunset at 5:37 pm PST.
Sunshine
The average sunshine in September is 8.4h.UV index
February through December, with an average maximum UV index of 7, are months with the highest UV index in Dumanjug. A UV Index value of 6 to 7 symbolizes a high health risk from unprotected exposure to Sun's UV rays for average individuals.Note: In September, the average maximum UV index of 7 translates into the following recommendations:
Shun overexposure. Protection from sun ravages is indispensable. 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. By wearing a generously brimmed hat, you can cut UV radiation exposure significantly. Stay alert! Reflective properties of sand and water amplify the Sun's UV radiation.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Dumanjug, Philippines
- Average high temperature in September: 29.9°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: 25.1°C
The month with the highest average low temperature is May (26.3°C).
The coldest month (with the lowest average low temperature) is February (23.9°C).
Average pressure in September
Dumanjug, Philippines
- Average pressure in September: 1009.1mbar
The month with the highest atmospheric pressure is February (1011.4mbar).
The months with the lowest atmospheric pressure are July and August (1008.8mbar).
Average wind speed in September
Dumanjug, Philippines
- Average wind speed in September: 10.7km/h
The windiest month (with the highest average wind speed) is January (16.6km/h).
The calmest months (with the lowest average wind speed) are May and June (8.1km/h).
Average humidity in September
Dumanjug, Philippines
- Average humidity in September: 77%
The month with the highest relative humidity is January (82%).
The month with the lowest relative humidity is May (74%).
Average rainfall in September
Dumanjug, Philippines
- Average rainfall in September: 68mm
The wettest month (with the highest rainfall) is December (120mm).
The driest month (with the least rainfall) is April (36mm).
Average rainfall days in September
Dumanjug, Philippines
- Average rainfall days in September: 18.5 days
The month with the highest number of rainy days is January (24.1 days).
The month with the least rainy days is April (16.3 days).
Average sea temperature in September
Dumanjug, Philippines
- Average sea temperature in September: 29.2°C
The best month for swimming (with the highest average sea temperature) is June (29.8°C).
The coldest month (with the lowest average sea temperature) is February (26.8°C).
Average daylight in September /
Average sunshine in September
Dumanjug, Philippines
- Average daylight in September: 12h and 12min
The month with the longest days is June (Average daylight: 12h and 42min).
The month with the shortest days is December (Average daylight: 11h and 36min).
- Average sunshine in September: 8h and 24min
The month with the most sunshine is June (Average sunshine: 10h and 24min).
The month with the least sunshine is January (Average sunshine: 5h and 6min).
Average sunshine days in September
Dumanjug, Philippines
- Average sunshine days in September: 9.9 days
The month with the most sunshine days is August (11.4 days).
The month with the least sunshine days is November (3.5 days).
Average UV index in September
Dumanjug, Philippines
- Average UV index in September: 7
The months with the highest UV index are February, March, April, May, June, July, August, September, October, November and December (UV index 7).
The month with the lowest UV index is January (UV index 6).
Average cloud cover in September
Dumanjug, Philippines
- Average cloud cover in September: 40
The month with the most cloud cover is January (Cloud cover 53).
The month with the least cloud cover is April (Cloud cover 30).
Average visibility in September
Dumanjug, 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).





