September weather forecast
Unisan, Philippines

September, the first month of the autumn in Unisan, is still a warm month, with an average temperature ranging between max 29.8°C (85.6°F) and min 26°C (78.8°F).

Temperature

September notes an average high-temperature of a moderately hot 29.8°C (85.6°F), subtly differing from August's 30.2°C (86.4°F). Unisan's average temperature during the nights of September is recorded at a still warm 26°C (78.8°F).

Heat index

For September, the heat index is estimated at a sweltering 37°C (98.6°F). More safety actions are required, heat exhaustion and heat cramps are probable. Long-term activity may precipitate heatstroke.
Note that heat index values are valued for light wind and location in the shade. A rise of up to 15 Fahrenheit (8 Celsius) degrees in the heat index could result from direct sunlight.
Note: The heat index, also known as 'feels like' or 'felt air temperature', reflects the feeling of heat when considering both air temperature and humidity. An individual's perception of weather can be swayed by a variety of elements including metabolic differences, pregnancy status, and their level of physical exertion. Should you be directly under the sun, anticipate a possible increase in the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values hold great significance to children. Typically, children face more danger than adults as they usually perspire less. Their larger skin surface relative to their small bodies and increased heat output from their activities enhance their risk.
When temperatures rise, the human body turns to perspiration, using the cooling power of evaporating sweat. Under high air temperature and humidity (high heat index) conditions, perspiration is limited, and the perception of heat is increased. The body is at risk of dehydration and related complications when it fails to shed excessive heat.

Humidity

In Unisan, the average relative humidity in September is 81%.

Rainfall

In September, the rain falls for 27 days. Throughout September, 182mm (7.17") of precipitation is accumulated. In Unisan, during the entire year, the rain falls for 295.7 days and collects up to 1738mm (68.43") of precipitation.

Sea temperature

In Unisan, the average seawater temperature in September is 28.7°C (83.7°F).
Note: Water temperatures between 25°C (77°F) and 29°C (84.2°F) are regarded as highly pleasant, making all water activities enjoyable without any discomfort over long durations.

Daylight

The average length of the day in September in Unisan is 12h and 13min.
On the first day of the month, sunrise is at 5:40 am and sunset at 6:03 pm. On the last day of September, in Unisan, sunrise is at 5:41 am and sunset at 5:42 pm PST.

Sunshine

In September, the average sunshine in Unisan is 8.5h.

UV index

February through September, with an average maximum UV index of 7, are months with the highest UV index in Unisan. A UV Index of 6 to 7 symbolizes a high health vulnerability from unprotected exposure to Sun's UV rays for the average person.
Note: The maximum daily UV index of 7 in September converts into the following recommendations:
Persist in precautions and follow sun safety policies. Keeping sunburn at bay is imperative. Stay in the shade and limit direct Sun exposure from 10 a.m. to 4 p.m., a time when UV radiation is particularly strong. Remember, however, that shade structures may not provide complete protection. In bright sunlight, prioritize sunglasses that grant protection from UVA and UVB radiation. Warning! The reflection of sand and water increases the UV dose.