September weather forecast
Calmay, Philippines

September, the first month of the autumn in Calmay, is also a hot month, with an average temperature fluctuating between 23.9°C (75°F) and 30.7°C (87.3°F).

Temperature

As Calmay transitions into September, the average high-temperature stands at a still tropical 30.7°C (87.3°F), offering little variation from the preceding month. An average low-temperature of 23.9°C (75°F) is observed during the September nights.

Heat index

September's average heat index is calculated to be a blistering 41°C (105.8°F). Take greater precautions, heat exhaustion and heat cramps may be expected. Heatstroke could result from lengthy activity.
Data suggests that the heat index is set for environments in shade and with a light wind. Direct exposure to sunlight could raise the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'feels like', blends air temperature and moisture content to represent the felt temperature to humans. One's perception of temperature can vary depending on physical activity and individual heat sensitivity, influenced by factors like wind, attire, and metabolic variations. Recognize that direct exposure to the sun can escalate the heat effect, potentially adding 15 Fahrenheit (8 Celsius) degrees to the heat index. Heat index values are quite important for children. Children often miss understanding the importance of rest and rehydration. Thirst usually appears late during dehydration - therefore, maintaining hydration, particularly during long physical activities, is essential.
Perspiration is the body's default response to elevated temperatures, as it promotes the evaporation of sweat to achieve cooling. With a lot of moisture in the air, the evaporation process is not as effective, and the body does not cool down as efficiently, creating a perception of overheating. When body heat isn't effectively managed, risks of dehydration and overheating amplify.

Humidity

The most humid month in Calmay is September, with an average relative humidity of 83%.

Rainfall

In Calmay, during September, the rain falls for 25.1 days and regularly aggregates up to 180mm (7.09") of precipitation. In Calmay, Philippines, during the entire year, the rain falls for 187.6 days and collects up to 1079mm (42.48") of precipitation.

Daylight

In Calmay, the average length of the day in September is 12h and 14min.
On the first day of September, sunrise is at 5:45 am and sunset at 6:11 pm. On the last day of the month, sunrise is at 5:48 am and sunset at 5:48 pm PST.

Sunshine

The average sunshine in September in Calmay is 9.2h.

UV index

January through December, with an average maximum UV index of 7, are months with the highest UV index. The months with the lowest UV index in Calmay are January through December, with an average maximum UV index of 7. A UV Index value of 6 to 7 symbolizes a high health hazard from unprotected exposure to Sun's UV rays for the average person.
Note: In September, the average maximum UV index of 7 translates into the following recommendations:
Endorse precautions and be consistent with sun safety guidelines. Preventing sunburn is paramount. Avoid direct sunlight between the hours of 10 a.m. and 4 p.m., when UV radiation is at its peak. Keep in mind that shade structures may not provide complete protection. Experience reduced UV exposure by about half when donning a wide-brim hat.