September weather forecast
Gemurung, Indonesia

The first month of the spring, September, is still a tropical month in Gemurung, Indonesia, with temperature in the range of an average high of 31.7°C (89.1°F) and an average low of 24.4°C (75.9°F).

Temperature

The dawn of September sees an average high-temperature of a still tropical 31.7°C (89.1°F), subtly contrasting with August's 30.8°C (87.4°F). During September, Gemurung records an average temperature of 24.4°C (75.9°F) at night.

Heat index

During September, the heat index is calculated to be a very hot 38°C (100.4°F). Apply extra caution, heat cramps and heat exhaustion could happen. Heatstroke might occur with long-duration activity.
Heat index values are typically calculated for conditions of shade and a light breeze. A direct sunlight exposure may boost the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'real feel', blends air temperature and moisture content to represent the felt temperature to humans. One's weather perception can be influenced by a range of factors including metabolic differences, being pregnant, and their level of physical activity. Direct sun exposure is noteworthy in its ability to escalate the felt temperature, potentially adding 15 Fahrenheit (8 Celsius) degrees to the heat index. Heat index values are primarily vital for children. Children often fail to recognize the requirement to rest and rehydrate. Thirst, being a late symptom of dehydration, underlines the importance of maintaining hydration, especially during ongoing physical activities.
Humans rely on perspiration as a cooling mechanism, wherein the evaporating sweat counteracts excessive warmth. With high air temperature and humidity (high heat index) conditions, sweat production is restricted, leading to an amplified perception of heat. Overheating risks increase with rising body temperatures, especially if heat release isn't efficient.

Humidity

In September, the average relative humidity is 65%.

Rainfall

In Gemurung, in September, during 4.1 rainfall days, 8mm (0.31") of precipitation is typically accumulated. Throughout the year, in Gemurung, Indonesia, there are 187.8 rainfall days, and 839mm (33.03") of precipitation is accumulated.

Daylight

In September, the average length of the day is 12h and 4min.
On the first day of September in Gemurung, sunrise is at 05:29 and sunset at 17:28. On the last day of the month, sunrise is at 05:13 and sunset at 17:23 WIB.

Sunshine

August through October, with an average of 9.9h of sunshine, are months with the most sunshine in Gemurung.

UV index

January through December, with an average maximum UV index of 7, are months with the highest UV index in Gemurung. January through December, with an average maximum UV index of 7, are months with the lowest UV index in Gemurung, Indonesia. A UV Index of 6 to 7 symbolizes a high threat to health from unprotected exposure to Sun's UV rays for average individuals.
Note: The daily maximum UV index of 7 in September interprets into the following advice:
Sidestep overexposure. Individuals with fair complexions risk burning in fewer than 20 minutes. Minimize exposure to direct sunlight and seek shade from 10 a.m. to 4 p.m., when UV radiation is most intense, but remember that shade structures may not offer complete protection. For optimum UV protection, wear sun-resistant attire complemented with a hat and quality shades.