September weather forecast
Ciaul, Indonesia

September, the first month of the spring in Ciaul, is also a hot month, with an average temperature ranging between min 23.5°C (74.3°F) and max 31.6°C (88.9°F).

Temperature

September's average high-temperature is a still hot 31.6°C (88.9°F), maintaining a close comparison with August's 31.3°C (88.3°F). September sees the temperature falling to a mean low of 23.5°C (74.3°F).

Heat index

The average heat index in September is calculated to be a scorching 40°C (104°F). Exercise special caution, heat exhaustion and heat cramps are probable. Prolonged activity may induce heatstroke.
Heat index's context suggests values are appropriate for shady areas and slight breezes. Heat index values may surge by up to 15 Fahrenheit (8 Celsius) degrees in the presence of direct sunlight.
Note: The heat index, also known as 'real feel' or 'feels like', is a metric representing the sensation of warmth when air temperature and moisture come together. One's perception of weather can be shaped by other factors, involving metabolic differences, pregnancy, and physical exertion. Keep in mind that direct sunshine exposure can amplify the weather's effects, possibly increasing the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are primarily vital for 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.
Sweat evaporation plays a crucial role in cooling the human body, a process enabled by perspiration. In high relative humidity, the body's ability to evaporate heat is diminished, resulting in a heightened feeling of warmth. With body temperatures on the rise, inefficient heat shedding can lead to dehydration and its associated complications.

Humidity

The months with the lowest humidity are September and October, with an average relative humidity of 71%.

Rainfall

In Ciaul, in September, it is raining for 16 days, with typically 47mm (1.85") of accumulated precipitation. Throughout the year, there are 291.3 rainfall days, and 1460mm (57.48") of precipitation is accumulated.

Daylight

In September, the average length of the day is 12h and 4min.
On the first day of the month, sunrise is at 05:55 and sunset at 17:55. On the last day of September, in Ciaul, Indonesia, sunrise is at 05:40 and sunset at 17:50 WIB.

Sunshine

With an average of 9.3h of sunshine, September has the most sunshine of the year.

UV index

February through December, with an average maximum UV index of 7, are months with the highest UV index in Ciaul. A UV Index reading of 6 to 7 represents a high health risk from exposure to the Sun's UV radiation for the average person.
Note: A maximum high daily UV index of 7 during September translates into the following directions:
Act on precautions and pay attention to sun safety recommendations. Avoidance of sunburn is obligatory. Make an effort to avoid direct sun exposure between 10 a.m. and 4 p.m., the peak period for UV radiation, and note that objects like parasols or canopies might not offer full sun protection. Limit sun-induced ocular harm with sunglasses that feature UVA and UVB filtration.