September weather forecast
Isabel, Philippines

September, the first month of the autumn in Isabel, is also a moderately hot month, with an average temperature varying between 25.8°C (78.4°F) and 29.6°C (85.3°F).

Temperature

The high-temperature average in September for Isabel, Philippines, is a still warm 29.6°C (85.3°F), staying closely aligned with August's conditions. Isabel notes an average temperature descent to a still warm 25.8°C (78.4°F) in September, a small shift from its daytime peak.

Heat index

September's average heat index is appraised at a very hot 36°C (96.8°F). Implement additional cautionary measures, heat cramps and heat exhaustion could occur. Prolonged activity might induce heatstroke.
Thinking about the heat index, one should account for its values in shaded areas with gentle breezes. The heat index may scale up by 15 Fahrenheit (8 Celsius) degrees with direct sun exposure.
Note: The heat index, also known as 'real feel' or 'felt air temperature', is an aggregate value of air's warmth and moisture to show the human-felt temperature. A person's impression of weather can be swayed by numerous aspects, among them metabolic variations, pregnancy, and activity levels. Under direct sun rays, the felt temperature might be heightened, with the heat index increasing by 15 Fahrenheit (8 Celsius) degrees. Heat index values are extremely significant for babies and toddlers. Juveniles often do not understand the need to recuperate and rehydrate. Thirst is a delayed symptom of dehydration - hence, it is vital to maintain hydration, particularly during ongoing physical activities.
The human body normally cools itself by perspiration. Excessive warmth is eliminated from the body by evaporation of sweat. An elevated level of relative humidity hinders evaporation, leading to decreased heat elimination from the body, inducing a sensation of excess heat. Potential thermal conditions emerge as the body's heat gain outpaces its cooling mechanisms.

Humidity

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

Rainfall

In September, the rain falls for 24 days. Throughout September, 75mm (2.95") of precipitation is accumulated. Throughout the year, there are 250 rainfall days, and 824mm (32.44") of precipitation is accumulated.

Sea temperature

In September, the average sea temperature is 29.2°C (84.6°F).
Note: Between 25°C (77°F) and 29°C (84.2°F), water temperature is typically considered very warm and pleasurable by everyone. Water activities at these temperatures are enjoyable for extended periods without discomfort.

Daylight

In September, the average length of the day is 12h and 11min.
On the first day of the month, sunrise is at 5:32 am and sunset at 5:51 pm. On the last day of September, sunrise is at 5:30 am and sunset at 5:33 pm PST.

Sunshine

In Isabel, the average sunshine in September is 8.3h.

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. A UV Index of 6 to 7 symbolizes a high health vulnerability from unprotected exposure to Sun's UV rays for the ordinary person.
Note: The maximum daily UV index, 7 in September, converts into the following recommendations:
Follow precautions and abide by sun safety rules. Deterrence of sunburn is imperative. 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. Clothes that are both tight-knit and comfortably loose are prime choices for sun protection. Attention! The reflection of both water and sand can increase the intensity of UV rays.