September weather forecast
Mandaon, Philippines

September, the first month of the autumn in Mandaon, is also a moderately hot month, with an average temperature ranging between min 27.2°C (81°F) and max 29.4°C (84.9°F).

Temperature

September denotes a minimal variation in the average high-temperature to a still warm 29.4°C (84.9°F) from August's 29.5°C (85.1°F). September's average low-temperature is a still warm 27.2°C (81°F), reflecting a minor difference from the day's peak temperatures.

Heat index

September's mean heat index is appraised at a sweltering 35°C (95°F). Adopt extra safety steps, risk of heat exhaustion and heat cramps is notable. Sustained activity might cause heatstroke.
Know that the heat index computations account for shaded terrains and slight winds. Direct sunlight can cause a surge in the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'feels like', is a calculation that merges air temperature and relative humidity to depict the sensation of warmth. This effect is personal, influenced by the individual's physical activity and heat sensitivity, shaped by factors including wind, attire, and metabolic variations. Understand that direct sun rays can influence the weather's impact, leading to an increase in the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly relevant to children. Children often fail to recognize the requirement to rest and rehydrate. Thirst, being a late symptom of dehydration, underlines the importance of maintaining hydration, especially during ongoing physical activities.
To prevent overheating and help regulate its internal temperature, the human body sweat and rely on the evaporation to cool down. A surge in relative humidity can disrupt the body's normal cooling function by slowing evaporation, hence reducing the rate at which the body cools and intensifying the perception of heat. If the body retains more heat than it can expel, the increasing temperature can lead to heat-related conditions.

Humidity

In Mandaon, the average relative humidity in September is 77%.

Rainfall

In September, in Mandaon, the rain falls for 22.8 days. Throughout September, 131mm (5.16") of precipitation is accumulated. In Mandaon, during the entire year, the rain falls for 231.1 days and collects up to 1214mm (47.8") of precipitation.

Sea temperature

In Mandaon, the average seawater temperature in September is 28.8°C (83.8°F).
Note: Temperatures between 25°C (77°F) and 29°C (84.2°F) are ideal for swimming, diving, and similar water activities, ensuring pleasure and comfort for extended periods without feeling uneasy.

Daylight

In Mandaon, the average length of the day in September is 12h and 12min.
On the first day of the month, sunrise is at 5:36 am and sunset at 5:57 pm. On the last day of September, sunrise is at 5:35 am and sunset at 5:37 pm PST.

Sunshine

In Mandaon, 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 value of 6 to 7 symbolizes a high health risk from exposure to the Sun's UV radiation for average individuals.
Note: In September, the maximum UV index of 7 suggests these recommendations:
Endorse precautions and be consistent with sun safety guidelines. Preventing sunburn is paramount. The Sun's UV radiation is most potent between 10 a.m. and 4 p.m. Try to limit direct exposure to the Sun during this period. Arm yourself against UV rays' harm with protective apparel and UV-filtering shades. Be on guard! The reflective nature of sand and water boosts UV exposure.