September weather forecastCastañas, Philippines
September
Weather in September
September, the first month of the autumn in Castañas, is also a moderately hot month, with an average temperature fluctuating between 29.5°C (85.1°F) and 24.1°C (75.4°F).Temperature
The onset of September manifests an average high-temperature of a still warm 29.5°C (85.1°F), demonstrating a minor variation from the preceding month. In Castañas, the expected average low-temperature for September is a still moderately hot 24.1°C (75.4°F).Heat index
The heat index value during September is computed to be a fiery hot 37°C (98.6°F). Incorporate special precautions, risk of heat exhaustion and heat cramps is substantial. Sustained activity could cause heatstroke.For clarity, heat index numbers account for light winds and areas under shade. The heat index might be elevated by 15 Fahrenheit (8 Celsius) degrees due to direct sun exposure.
Note: The heat index, also known as 'real feel' or 'feels like', reflects the feeling of heat when considering both air temperature and humidity. The effect is experienced differently by individuals, hinging on unique characteristics such as body mass, stature, and level of activity. Bear in mind that direct sunshine exposure increases weather impact, and may raise heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values hold particular significance for children. Children often do not understand the need to rest and hydrate. Thirst is a late manifestation of dehydration - therefore, it is essential to stay hydrated, particularly during prolonged physical activities.
The body's natural response to excessive warmth is perspiration, as it allows for cooling through sweat evaporation. When relative humidity is heightened, it slows the rate of evaporation, thereby decreasing the body's ability to shed heat and creating a sensation of overheating. The body faces dehydration threats when its cooling efforts are outpaced by excessive heat gain.
Humidity
The months with the highest humidity in Castañas are July, September through December, with an average relative humidity of 85%.Rainfall
In September, the rain falls for 24.6 days. Throughout September, 133mm (5.24") of precipitation is accumulated. Throughout the year, there are 292.5 rainfall days, and 1308mm (51.5") of precipitation is accumulated.Sea temperature
In September, the average sea temperature in Castañas is 28.7°C (83.7°F).Note: Water surface temperatures from 25°C (77°F) to 29°C (84.2°F) are considered optimal and extremely delightful for long-lasting pleasure in any water activity.
Daylight
In September, the average length of the day in Castañas is 12h and 13min.On the first day of September, sunrise is at 5:42 am and sunset at 6:05 pm. On the last day of the month, sunrise is at 5:43 am and sunset at 5:44 pm PST.
Sunshine
The average sunshine in September is 8.1h.UV index
March through September, 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 unsafe exposure to UV radiation for the average person.Note: A typical high UV index of 7 in September suggests the following recommendations:
Resist overexposure. Safeguarding from solar damage is indispensable. UV radiation from the Sun is most intense between 10 a.m. and 4 p.m. Try to avoid direct sunlight during this period. A wide-brimmed hat is a staple for defending the face, eyes, ears, and neck from the Sun. Be wary! Reflections from sand and water make UV radiation more intense.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Castañas, Philippines
- Average high temperature in September: 29.5°C
The warmest month (with the highest average high temperature) is May (31.1°C).
The month with the lowest average high temperature is January (26.6°C).
- Average low temperature in September: 24.1°C
The months with the highest average low temperature are May and June (25.1°C).
The coldest month (with the lowest average low temperature) is February (22.8°C).
Average pressure in September
Castañas, Philippines
- Average pressure in September: 1008.2mbar
The month with the highest atmospheric pressure is February (1013.1mbar).
The month with the lowest atmospheric pressure is August (1007.7mbar).
Average wind speed in September
Castañas, Philippines
- Average wind speed in September: 7.6km/h
The windiest month (with the highest average wind speed) is January (14.4km/h).
The calmest month (with the lowest average wind speed) is June (6.8km/h).
Average humidity in September
Castañas, Philippines
- Average humidity in September: 85%
The months with the highest relative humidity are July, September, October, November and December (85%).
The month with the lowest relative humidity is April (78%).
Average rainfall in September
Castañas, Philippines
- Average rainfall in September: 133mm
The wettest month (with the highest rainfall) is May (167mm).
The driest month (with the least rainfall) is March (41mm).
Average rainfall days in September
Castañas, Philippines
- Average rainfall days in September: 24.6 days
The month with the highest number of rainy days is December (28.5 days).
The month with the least rainy days is April (20.3 days).
Average sea temperature in September
Castañas, Philippines
- Average sea temperature in September: 28.7°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 (26.7°C).
Average daylight in September /
Average sunshine in September
Castañas, 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 18min).
- Average sunshine in September: 8h and 6min
The month with the most sunshine is May (Average sunshine: 10h and 42min).
The month with the least sunshine is January (Average sunshine: 3h and 48min).
Average sunshine days in September
Castañas, Philippines
- Average sunshine days in September: 3.9 days
The month with the most sunshine days is August (7.9 days).
The month with the least sunshine days is November (0.5 days).
Average UV index in September
Castañas, Philippines
- Average UV index in September: 7
The months with the highest UV index are March, April, May, June, July, August and September (UV index 7).
The months with the lowest UV index are January, February, October, November and December (UV index 6).
Average cloud cover in September
Castañas, Philippines
- Average cloud cover in September: 45
The month with the most cloud cover is January (Cloud cover 66).
The month with the least cloud cover is May (Cloud cover 35).
Average visibility in September
Castañas, Philippines
- Average visibility in September: 9km
The months with the highest visibility are February, March, April and December (10km).
The months with the lowest visibility are January, May, June, July, August, September, October and November (9km).
