September weather forecast
Calawis, Philippines

The first month of the autumn, September, is also a moderately hot month in Calawis, Philippines, with an average temperature ranging between max 29.9°C (85.8°F) and min 24.1°C (75.4°F).

Temperature

Calawis records an average high-temperature of a still warm 29.9°C (85.8°F) in September, closely mirroring the climate of the previous month. Calawis's nights in September experience an average temperature drop to a still warm 24.1°C (75.4°F).

Heat index

The heat index for September is computed to be a torrid 38°C (100.4°F). Adopt extra preventive measures, the occurrence of heat cramps and heat exhaustion is likely. Heatstroke may follow extended activity.
Always consider that heat index estimations are for light winds and places in the shade. The presence of direct sunlight can raise the heat index values by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'felt air temperature', embodies the combination of air temperature and moisture content to illustrate perceived heat. The influence of weather is personal, differing among individuals based on variations in body mass, stature, and the degree of physical exertion. In the direct sunlight, the weather's impact can be amplified, possibly boosting the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are largely significant for babies and toddlers. Children frequently underestimate the necessity to rest and hydrate. Thirst is a late sign of dehydration - thus, it is vital to stay hydrated, particularly during lengthy physical exercises.
Sweat evaporation plays a crucial role in cooling the human body, a process enabled by perspiration. When there is an excess of moisture in the atmosphere, the efficiency of the evaporation process is lessened, leading to less efficient body cooling and a sensation of overheating. Exceeding the body's heat disposal threshold results in a rise in body temperature and potential thermal disorders.

Humidity

July through September, with an average relative humidity of 83%, are the most humid months in Calawis, Philippines.

Rainfall

In September, in Calawis, Philippines, the rain falls for 25.4 days. Throughout September, 187mm (7.36") of precipitation is accumulated. Throughout the year, in Calawis, there are 250.5 rainfall days, and 1347mm (53.03") of precipitation is accumulated.

Daylight

In September, the average length of the day is 12h and 13min.
On the first day of September, sunrise is at 5:42 am and sunset at 6:07 pm. On the last day of the month, sunrise is at 5:44 am and sunset at 5:45 pm PST.

Sunshine

The average sunshine in September is 8.3h.

UV index

The months with the highest UV index in Calawis are February through October, with an average maximum UV index of 7. A UV Index reading of 6 to 7 represents a high threat to health from exposure to the Sun's UV radiation for the average person.
Note: An average UV index of 7 in September transforms into this advice:
Adopt measures and apply sun safety strategies. Shielding from skin and eye damage is necessary. Limit your direct sun exposure, especially between 10 a.m. and 4 p.m., when UV radiation is strongest. Shade structures might not provide complete sun protection. It's wise to wear UVA and UVB-blocking sunglasses when the sun shines brightly.