September weather forecast
Cirebon, Indonesia

Cirebon gears up for a slight rise in rainfall as September rolls around. The climate lingers in the comfort zones of tropical cities. Despite a hint of more rainfall, there's an ample amount of sunshine permeating through the city. Beach outings are still appealing in September, thanks to the gradually rising sea temperature. The start of the new academic year aligns with the changing weather, ushering in a whiff of fresh beginnings through the city.

Temperature

The onset of September brings with it an average high-temperature of a hot 30.6°C (87.1°F), showing a negligible variation from the month before. September witnesses an average nighttime temperature of 22.6°C (72.7°F) in Cirebon.

Heat index

During September, the heat index is calculated to be a torrid 37°C (98.6°F). Adopt enhanced safety measures, heat exhaustion and heat cramps could occur. Continuous activity may induce heatstroke.
The metrics for the heat index are tailored for both shady environments and light winds. Direct sunlight exposure may cause a 15 Fahrenheit (8 Celsius) degrees rise in the heat index.
Note: The heat index, also known as 'real feel' or 'felt air temperature', is a measure that combines air temperature and relative humidity into a single value that indicates how hot the weather feels. The effect is experienced differently by individuals, hinging on unique characteristics such as body mass, stature, and level of activity. 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 especially vital to children. 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.
Perspiration is the human body's physiological response to high temperatures and is an attempt to lower body temperature through evaporation of sweat. Relative humidity in excess curtails evaporation, therefore reducing heat dissipation from the body, leading to feelings of excess heat. As the body accumulates more heat than it can release, body temperature goes up, increasing the risk of heat-related health issues.

Humidity

September and October, with an average relative humidity of 71%, are the least humid months in Cirebon.

Rainfall

In September, in Cirebon, Indonesia, the rain falls for 10.7 days. Throughout September, 22mm (0.87") of precipitation is accumulated. Throughout the year, in Cirebon, Indonesia, there are 244.1 rainfall days, and 1216mm (47.87") of precipitation is accumulated.

Sea temperature

In Cirebon, the average seawater temperature in September is 28.3°C (82.9°F).
Note: For water activities like swimming, diving, and more, temperatures ranging between 25°C (77°F) and 29°C (84.2°F) offer superior comfort and enjoyment for lengthy durations.

Daylight

In September, the average length of the day is 12h and 4min.
On the first day of September, sunrise is at 05:46 and sunset at 17:45. On the last day of the month, sunrise is at 05:30 and sunset at 17:40 WIB.

Sunshine

July through September, with an average of 9.7h of sunshine, are months with the most sunshine in Cirebon.

UV index

The months with the highest UV index in Cirebon are January through December, with an average maximum UV index of 7. January through December, with an average maximum UV index of 7, are months with the lowest UV index in Cirebon. A UV Index estimate of 6 to 7 represents a high health risk from exposure to the Sun's UV radiation for ordinary individuals.
Note: The daily maximum UV index of 7 in September interprets into the following advice:
Avoid overexposure. Fair-skinned individuals can burn in under 20 minutes. 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. Safeguard your eyes, ears, and face from sun rays with the aid of a wide-brim hat. Caution! The mirror effect of sand and water ups the UV radiation strength.