September weather forecast
Selapajang, Indonesia

The first month of the spring, September, is still a hot month in Selapajang, Indonesia, with an average temperature varying between 23.7°C (74.7°F) and 31.8°C (89.2°F).

Temperature

With the onset of September, the average high-temperature registers at a still tropical 31.8°C (89.2°F), subtly different from August's 31.3°C (88.3°F). Throughout September, Selapajang records an average temperature of 23.7°C (74.7°F) at night.

Heat index

September's average heat index is computed to be a blisteringly hot 40°C (104°F). Apply extra caution, heat cramps and heat exhaustion could happen. Heatstroke might occur with long-duration activity.
Take into consideration that the heat index values are calculated for shade and light wind conditions. If exposed to direct sunlight, the heat index could climb by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'felt air temperature', measures the perceived warmth when incorporating the humidity present in the air. One's perception of temperature is subjective, varying based on their activity and individual heat perception, influenced by factors like wind, clothing, and metabolic variations. It is essential to be conscious of the fact that direct sunlight can intensify the felt heat, leading to an elevation in the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly meaningful for babies and toddlers. Young ones often ignore the need to take a break and drink fluids. Thirst is a late-stage symptom of dehydration - hence, maintaining hydration, particularly during extended physical activities, is crucial.
To achieve cooling, the human body employs perspiration, relying on the subsequent evaporation of sweat. When the air holds a significant amount of moisture, the efficiency of the evaporation process is decreased, preventing the body from cooling down efficiently, leading to the sensation of overheating. As the body gains more heat than it can dissipate, there's a risk of increasing temperatures and resultant overheating.

Humidity

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

Rainfall

In Selapajang, during September, the rain falls for 17.2 days and regularly aggregates up to 55mm (2.17") of precipitation. In Selapajang, during the entire year, the rain falls for 292.5 days and collects up to 1468mm (57.8") of precipitation.

Daylight

In Selapajang, the average length of the day in September is 12h and 4min.
On the first day of September in Selapajang, Indonesia, sunrise is at 05:54 and sunset at 17:54. On the last day of the month, sunrise is at 05:39 and sunset at 17:48 WIB.

Sunshine

The average sunshine in September is 9.1h.

UV index

February through December, with an average maximum UV index of 7, are months with the highest UV index in Selapajang. A UV Index reading of 6 to 7 represents a high health vulnerability from unprotected exposure to Sun's UV rays for the average person.
Note: A daily maximum UV index of 7 in September translates into the following instructions:
Resist extreme sun exposure. Guarding against solar damage is essential. Try to minimize direct Sun exposure between 10 a.m. and 4 p.m., the peak period for UV radiation. Also note that objects like parasols or canopies might not provide complete sun protection. Shield yourself from the harmful effects of UV radiation with sun-protective attire, a hat, and quality sunglasses.