September weather forecast
Lumban, Philippines

September, the first month of the autumn in Lumban, is still a warm month, with an average temperature fluctuating between 23.1°C (73.6°F) and 29.5°C (85.1°F).

Temperature

The average high-temperature during September registers at a still warm 29.5°C (85.1°F), closely corresponding to the preceding month. Lumban's average low-temperature in September is measured at a still warm 23.1°C (73.6°F).

Heat index

Throughout September, the heat index is estimated at a very hot 38°C (100.4°F). Extra precautions are necessary, heat cramps and heat exhaustion are plausible outcomes. Extended activity could lead to heatstroke.
Be advised, the heat index considers values for conditions in shade and with a light breeze. 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 'apparent temperature', arises from combining readings of air temperature and relative moisture content. The impact of weather on an individual can be subjective, affected by the person's activity and heat perception, which can vary due to elements including wind, clothing, and metabolic differences. 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 particularly relevant to babies and toddlers. Juveniles are regularly less conscious of the need to recuperate and rehydrate. Thirst is a tardy symptom of dehydration - hydration, especially during lengthy physical activities, should be maintained.
Sweat evaporation, driven by perspiration, is the method the human body uses to rid itself of excessive warmth. During high air temperature and humidity (high heat index), the process of perspiration is hindered, intensifying the sensation of heat. As body temperatures escalate without effective heat release, one might face dehydration threats.

Humidity

The months with the highest humidity are July and September, with an average relative humidity of 88%.

Rainfall

In Lumban, during September, the rain falls for 27.4 days and regularly aggregates up to 223mm (8.78") of precipitation. Throughout the year, there are 313.5 rainfall days, and 1700mm (66.93") of precipitation is accumulated.

Daylight

The average length of the day in September in Lumban is 12h and 13min.
On the first day of the month, sunrise is at 5:42 am and sunset at 6:05 pm. On the last day of September, in Lumban, sunrise is at 5:43 am and sunset at 5:44 pm PST.

Sunshine

In September, the average sunshine in Lumban is 7.6h.

UV index

March through May, August and September, with an average maximum UV index of 7, are months with the highest UV index in Lumban. A UV Index value of 6 to 7 symbolizes a high health vulnerability from exposure to the Sun's UV rays for ordinary individuals.
Note: The average daily UV index of 7 in September transforms into the following instructions:
Apply measures and align with sun safety principles. Safeguarding against skin and eye injury is pivotal. 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. Select sunglasses that boast both UVA and UVB protection to limit the adverse effects of the sun on the eyes.