September weather forecastSan Rafael, Philippines

Weather in September

September, the first month of the autumn in San Rafael, is also a hot month, with an average temperature ranging between max 30.8°C (87.4°F) and min 25.7°C (78.3°F).

Temperature

In the transition from August to September, San Rafael reports an average high-temperature of a still tropical 30.8°C (87.4°F), indicating a close resemblance to the prior month. September's nights observe an average temperature of 25.7°C (78.3°F).

Heat index

In September, the heat index is estimated at a blistering 40°C (104°F). Adopt extra safety steps, risk of heat exhaustion and heat cramps is notable. Sustained activity might cause heatstroke.
Heat index specifics point out values are for conditions of shade and a slight breeze. Direct exposure to sunshine could lead to a heat index increase by 15 Fahrenheit (8 Celsius) degrees.
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 individual's temperature perception can be influenced by numerous factors such as metabolic variations, physical activity, and clothing. Keep in mind that direct sunshine exposure can amplify the weather's effects, possibly increasing the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are largely significant for babies and toddlers. In general, younger individuals are at greater risk than adults because they tend to sweat less. Also, having a larger skin surface to body size ratio and greater heat production due to their active behavior contribute to this danger.
Perspiring is a crucial mechanism for the human body, allowing it to release excessive warmth through evaporating sweat. An elevated level of relative humidity hinders evaporation, leading to decreased heat elimination from the body, inducing a sensation of excess heat. Overheating risks increase with rising body temperatures, especially if heat release isn't efficient.

Humidity

In San Rafael, the average relative humidity in September is 79%.

Rainfall

In San Rafael, during September, the rain falls for 26.8 days and regularly aggregates up to 228mm (8.98") of precipitation. Throughout the year, there are 210.3 rainfall days, and 1382mm (54.41") of precipitation is accumulated.

Daylight

In San Rafael, Philippines, the average length of the day in September is 12h and 13min.
On the first day of the month, sunrise is at 5:43 am and sunset at 6:08 pm. On the last day of September, in San Rafael, Philippines, sunrise is at 5:45 am and sunset at 5:46 pm PST.

Sunshine

In San Rafael, the average sunshine in September is 8.2h.

UV index

The months with the highest UV index in San Rafael 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 San Rafael. A UV Index of 6 to 7 symbolizes a high health risk from exposure to the Sun's UV rays for the ordinary person.
Note: In September, the average maximum UV index of 7 translates into the following recommendations:
Use protective steps and abide by sun safety guidelines. Safeguarding against skin and eye harm is necessary. From 10 a.m. to 4 p.m., when UV radiation is at its strongest, limit direct exposure to the Sun and note that shade structures may not provide full sun protection. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects.