September weather forecastGulun, Indonesia

September

Weather in September

September, the first month of the spring in Gulun, is a tropical month, with an average temperature varying between 21.5°C (70.7°F) and 30.3°C (86.5°F).

Temperature

Gulun commences September with an average high-temperature of a tropical 30.3°C (86.5°F), maintaining a close resemblance to the previous month. Gulun experiences a mean temperature of 21.5°C (70.7°F) during September nights.

Heat index

September's average heat index is calculated to be a sweltering 37°C (98.6°F). Implement more safety precautions, heat cramps and heat exhaustion may happen. Persistent activity could induce heatstroke.
Evaluating the heat index requires understanding its values in the shade and with gentle winds. Exposure to unobstructed sunshine could lead to an increase in the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'apparent temperature', provides an understanding of perceived warmth by combining temperature and relative humidity. Additional factors encompassing metabolic differences, the level of physical activity, and clothing can impact the individual's perception of temperature. Consider that direct sun exposure can intensify the felt heat, adding potentially 15 Fahrenheit (8 Celsius) degrees to the heat index. Heat index values hold particular importance for children. Children regularly disregard the necessity to rest and replenish fluids. Thirst is a late symptom of dehydration - thus, maintaining hydration, particularly during long-lasting physical activities, is essential.
The human body normally cools itself by perspiration, as evaporated sweat carries heat away from the body. With higher relative humidity, the rate of evaporation is reduced, resulting in increased heat retention in the body compared to drier air. Increasing body temperatures can be a precursor to dehydration if the body can't shed the extra heat.

Humidity

September and October, with an average relative humidity of 75%, are the least humid months in Gulun, Indonesia.

Rainfall

In September, the rain falls for 13.1 days. Throughout September, 38mm (1.5") of precipitation is accumulated. Throughout the year, there are 247.2 rainfall days, and 1234mm (48.58") of precipitation is accumulated.

Daylight

In Gulun, the average length of the day in September is 12h and 4min.
On the first day of the month, sunrise is at 05:35 and sunset at 17:33. On the last day of September, sunrise is at 05:19 and sunset at 17:29 WIB.

Sunshine

The average sunshine in September is 9.1h.

UV index

February, September and October, with an average maximum UV index of 7, are months with the highest UV index. A UV Index reading of 6 to 7 represents a high health hazard from unsafe exposure to UV radiation for the average person.
Note: The maximum daily UV index of 7 in September interprets into the following recommendations:
Persist in precautions and follow sun safety policies. Keeping sunburn at bay is imperative. The Sun's UV radiation is most powerful between 10 a.m. and 4 p.m. To the extent possible, limit exposure to the direct sun during these hours. Limit sun-induced ocular harm with sunglasses that feature UVA and UVB filtration.

Updated: Aug 30, 2024
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

The high-temperature, in September, in Gulun, records 30.3°C (86.5°F), while the low-temperature is 21.5°C (70.7°F). In September, the average heat index (a.k.a. 'apparent temperature', 'felt air temperature'), which factors the actual air temperature with the relative humidity, is calculated to be 37°C (98.6°F).

September and October, with an average relative humidity of 75%, are the least humid months.

In Gulun, the average relative humidity in September is 75%.

In Gulun, during September, the rain falls for 13.1 days and regularly aggregates up to 38mm (1.5") of precipitation.

The average day length in September is 12h and 4min.

In September, on the first day of the month, sunrise is at 05:35 and sunset at 17:33. On the last day of the month, sunrise is at 05:19 and sunset at 17:29 WIB.

The average sunshine duration in September is 9.1h.

The months with the highest UV index are February, September and October, with an average maximum UV index of 7.

In Gulun, the average daily maximum UV index in September is 7. A UV Index estimate of 6 to 7 represents a high health vulnerability from unsafe exposure to Sun's UV rays.

Today

Tomorrow

Long-term

Year J F M A M J J A September O N D

Aug

September

Oct

Average high temperature

29.3°C

30.3°C

30.9°C

Average low temperature

Average pressure

Average wind speed

Average max. wind speed

12.5km/h

12.6km/h

12km/h

Average wind speed gusts

Average humidity

Average rainfall

Average rainfall days

Average daylight

Average sunshine

Average sunshine days

14.3

11.1

Average UV index

Average cloud cover

Average visibility

Average temperature in September
Gulun, Indonesia

Average high temperature in September: 30.3°C

The warmest month (with the highest average high temperature) is October (30.9°C).
The month with the lowest average high temperature is July (28.6°C).

Average low temperature in September: 21.5°C

The month with the highest average low temperature is November (23.5°C).
The coldest month (with the lowest average low temperature) is August (20.8°C).

Average pressure in September
Gulun, Indonesia

Average pressure in September: 1011.8mbar

The months with the highest atmospheric pressure are August and September (1011.8mbar).
The month with the lowest atmospheric pressure is December (1009mbar).

Average wind speed in September
Gulun, Indonesia

Average wind speed in September: 10.8km/h

The windiest month (with the highest average wind speed) is August (11.1km/h).
The calmest month (with the lowest average wind speed) is April (6.2km/h).

Average humidity in September
Gulun, Indonesia

Average humidity in September: 75%

The months with the highest relative humidity are February, March and April (85%).
The months with the lowest relative humidity are September and October (75%).

Average rainfall in September
Gulun, Indonesia

Average rainfall in September: 38mm

The wettest month (with the highest rainfall) is March (178mm).
The driest month (with the least rainfall) is August (26mm).

Average rainfall days in September
Gulun, Indonesia

Average rainfall days in September: 13.1 days

The month with the highest number of rainy days is November (26.5 days).
The month with the least rainy days is August (9.8 days).

Average daylight in September /
Average sunshine in September
Gulun, Indonesia

Average daylight in September: 12h and 6min

The month with the longest days is December (Average daylight: 12h and 36min).
The month with the shortest days is June (Average daylight: 11h and 42min).

Average sunshine in September: 9h and 6min

The month with the most sunshine is August (Average sunshine: 9h and 18min).
The month with the least sunshine is December (Average sunshine: 7h and 0min).

Average sunshine days in September
Gulun, Indonesia

Average sunshine days in September: 11.1 days

The month with the most sunshine days is August (14.3 days).
The month with the least sunshine days is November (2.1 days).

Average UV index in September
Gulun, Indonesia

Average UV index in September: 7

The months with the highest UV index are February, September and October (UV index 7).
The months with the lowest UV index are January, March, April, May, June, July, August, November and December (UV index 6).