September weather forecast
Ciderum, Indonesia

The first month of the spring, September, is still a hot month in Ciderum, Indonesia, with an average temperature fluctuating between 20.9°C (69.6°F) and 31.5°C (88.7°F).

Temperature

September brings a marginal elevation to a still hot 31.5°C (88.7°F) from August's 31.7°C (89.1°F) in Ciderum's average high-temperatures. Ciderum's average low-temperature for the month of September records at a pleasant 20.9°C (69.6°F).

Heat index

For most parts of September, the heat index is computed to be a torrid 39°C (102.2°F). Preventive measures are required to mitigate the risk of heat cramps and heat exhaustion. Continuous activity may precipitate heatstroke.
Evaluating the heat index requires understanding its values in the shade and with gentle winds. Direct sunlight can potentially boost the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'real feel', gives a temperature feeling by integrating air temperature and humidity. A person's impression of weather can be shaped by many aspects, among them metabolic variations, pregnancy, and levels of physical activity. One must note that being under the direct sun can escalate the heat's effects, with the heat index possibly rising by 15 Fahrenheit (8 Celsius) degrees. Heat index values are extremely significant for babies and toddlers. Children are often less aware of the need to rest and re-hydrate. Thirst is a late sign of dehydration - it's vital to remain hydrated, particularly during prolonged physical activities.
When faced with excessive heat, the human body begins to perspire, utilizing the cooling benefits of sweat evaporation. Under high air temperature coupled with high humidity (high heat index), the body's perspiration is reduced, intensifying the sensation of heat. If the body retains more heat than it can expel, the increasing temperature can lead to heat-related conditions.

Humidity

September is the least humid month, with an average relative humidity of 71%.

Rainfall

In Ciderum, in September, it is raining for 20.3 days, with typically 84mm (3.31") of accumulated precipitation. In Ciderum, during the entire year, the rain falls for 305.8 days and collects up to 2855mm (112.4") of precipitation.

Daylight

The average length of the day in September is 12h and 4min.
On the first day of the month, sunrise is at 05:52 and sunset at 17:52. On the last day of September, sunrise is at 05:37 and sunset at 17:47 WIB.

Sunshine

With an average of 9h of sunshine, September has the most sunshine of the year.

UV index

The months with the highest UV index are April, July through October, with an average maximum UV index of 7. A UV Index reading of 6 to 7 represents a high health risk from exposure to the Sun's UV rays for the average person.
Note: The daily high UV index of 7 during September translates into the following recommendations:
Exercise precautions and adapt sun safety practices. Defence against skin and eye affliction is paramount. Limit your exposure to the sun's UV radiation, which is strongest between 10 a.m. and 4 p.m., and note that parasols or canopies may not provide full sun protection. Sun protection is enhanced with clothing that boasts a tight weave yet offers a loose fit.