September weather forecast
Rapu-Rapu, Philippines

The first month of the autumn, September, is still a warm month in Rapu-Rapu, Philippines, with an average temperature fluctuating between 25.6°C (78.1°F) and 29.5°C (85.1°F).

Temperature

Rapu-Rapu notes an average high-temperature of a still moderately hot 29.5°C (85.1°F) in September, hardly diverging from August. During the nights of September, Rapu-Rapu records an average temperature of 25.6°C (78.1°F), a minor drop from daytime peaks.

Heat index

The heat index value during September is estimated at a very hot 36°C (96.8°F). Implement additional safety measures to avoid heat cramps and heat exhaustion. Persistent activity might trigger heatstroke.
Regarding the heat index, one should be aware it's determined by shaded settings and mild winds. Heat index values have the potential to be boosted by 15 Fahrenheit (8 Celsius) degrees due to direct sunlight.
Note: The heat index, also known as 'real feel' or 'apparent temperature', combines both the air temperature and the humidity level to give a perceived human temperature. The impact of temperature is individual, as people's perception of weather may change based on their body mass, height, and physical activity. Exposure to direct sun rays can influence the heat you feel, pushing the heat index up by 15 Fahrenheit (8 Celsius) degrees. Heat index values are extremely vital to babies and toddlers. Young individuals are generally in more danger than adults due to their lower capacity to sweat. Moreover, their large skin surface in relation to their small bodies and the increased heat generation from their activities makes them more vulnerable.
In the face of high temperatures, the human body's reflex is to perspire, leveraging sweat evaporation for cooling. During conditions of high air temperature and humidity (high heat index), the body's ability to perspire is inhibited, increasing the sensation of warmth. Should the body fail to balance its heat gain, the escalating temperature poses health challenges.

Humidity

In September, the average relative humidity in Rapu-Rapu is 80%.

Rainfall

In Rapu-Rapu, Philippines, in September, during 17.1 rainfall days, 74mm (2.91") of precipitation is typically accumulated. Throughout the year, there are 266.9 rainfall days, and 1679mm (66.1") of precipitation is accumulated.

Sea temperature

In Rapu-Rapu, the average seawater temperature in September is 29.3°C (84.7°F).
Note: Water temperature ranging from 25°C (77°F) to 29°C (84.2°F) is seen as very warm and delightful by everyone. During these temperatures, water activities become enjoyable, without causing discomfort for extended periods.

Daylight

In September, the average length of the day in Rapu-Rapu is 12h and 13min.
On the first day of September in Rapu-Rapu, sunrise is at 5:32 am and sunset at 5:55 pm. On the last day of the month, sunrise is at 5:33 am and sunset at 5:34 pm PST.

Sunshine

In Rapu-Rapu, Philippines, the average sunshine in September is 7.5h.

UV index

March through September, with an average maximum UV index of 7, are months with the highest UV index in Rapu-Rapu. A UV Index estimate of 6 to 7 represents a high health hazard from unsafe exposure to UV radiation for the average person.
Note: The UV index of 7 during September translates into the following guidance:
Prevent overexposure. Protection from the sun's harmful effects is needed. The hours from 10 a.m. to 4 p.m. have the most intense UV radiation. As much as possible, limit direct sun exposure during this period. Sun-related eye harm can be minimized with proper sunglasses offering UVA and UVB coverage. Watch out! Sand and water enhance the UV exposure you receive.