September weather forecast
Kepunten, Indonesia

September

Weather in September

September, the first month of the spring in Kepunten, is still a tropical month, with an average temperature varying between 31.7°C (89.1°F) and 24.4°C (75.9°F).

Temperature

Kepunten, Indonesia, experiences an average high-temperature of a still tropical 31.7°C (89.1°F) in September, marking an insignificant shift from 30.8°C (87.4°F) in August. The low-temperature averages to a warm 24.4°C (75.9°F) during the nights of September.

Heat index

For most parts of September, the heat index is calculated to be a fiery hot 38°C (100.4°F). Greater preventive actions are needed, heat exhaustion and heat cramps are likely. Persistent activity could provoke heatstroke.
Observations indicate that the heat index values are for shady locations with light wind. Being under direct sunlight might amplify the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'felt air temperature', gauges the sensation of temperature factoring in the air's moisture content. The influence of weather is personal, with a diverse population experiencing it differently due to differences in body mass, stature, and degree of 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 highly important for children. Young ones often disregard the necessity to rest and hydrate. Thirst usually indicates advanced dehydration - hence, it is key to stay hydrated, particularly during ongoing physical activities.
The evaporation of sweat is a natural cooling mechanism of the human body, facilitated by perspiration. In the presence of elevated relative humidity, the evaporation rate decreases. This reduction leads to increased body heat retention compared to conditions of dry air. Should the body fail to balance its heat gain, the escalating temperature poses health challenges.

Humidity

In September, the average relative humidity is 65%.

Rainfall

In Kepunten, during September, the rain falls for 4.1 days and regularly aggregates up to 8mm (0.31") of precipitation. In Kepunten, during the entire year, the rain falls for 187.8 days and collects up to 839mm (33.03") of precipitation.

Daylight

In Kepunten, the average length of the day in September is 12h and 4min.
On the first day of the month, sunrise is at 05:30 and sunset at 17:28. On the last day of September, sunrise is at 05:14 and sunset at 17:24 WIB.

Sunshine

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

UV index

January through December, with an average maximum UV index of 7, are months with the highest UV index in Kepunten. The months with the lowest UV index are January through December, with an average maximum UV index of 7. A UV Index reading of 6 to 7 represents a high threat to health from unprotected exposure to Sun's UV rays for the average person.
Note: The maximum UV index of 7 during September leads to these instructions:
Refrain from overexposure. Fair-skinned individuals could burn in under 20 minutes. UV radiation from the sun is at its strongest between 10 a.m. and 4 p.m. Try to limit direct exposure during these hours. Employ a hat with a wide brim for robust protection, cutting UV exposure by half.

Frequently asked questions

Is it hot during September?
The high-temperature during September is 31.7°C (89.1°F) and the low-temperature is 24.4°C (75.9°F). The average heat index (a.k.a. 'feels like', 'apparent temperature'), which represents the influence of relative humidity on air temperature, in September is calculated to be 38°C (100.4°F).
What is the average humidity in September?
In Kepunten, Indonesia, the average relative humidity in September is 65%.
How much does it rain in September?
In Kepunten, during September, the rain falls for 4.1 days and regularly aggregates up to 8mm (0.31") of precipitation.
What is the average length of the day in September?
In September, the average day length is 12h and 4min.
What time are sunrise and sunset in September?
On the first day of September, sunrise is at 05:30 and sunset at 17:28. On the last day of the month, sunrise is at 05:14 and sunset at 17:24 WIB.
What are the months with the most sunshine in Kepunten?
The months with the most sunshine are August through October, with an average of 9.9h of sunshine.
How many hours of sunshine does Kepunten have in September?
The average sunshine duration in September is 9.9h.
What is the month with the highest UV index?
January through December, with an average maximum UV index of 7, are months with the highest UV index.
What are the months with the lowest UV index?
January through December, with an average maximum UV index of 7, are months with the lowest UV index.
What is the UV index intensity in September in Kepunten?
In September, the average daily maximum UV index is 7. A UV Index reading of 6 to 7 represents a high health vulnerability from unprotected exposure to UV radiation.
Average high temperature
Average low temperature
Average wind speed
Average max. wind speed
Average wind speed gusts
Average humidity
Average rainfall
Average rainfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility
Average temperature in September
Kepunten, Indonesia
  • Average high temperature in September: 31.7°C

The warmest month (with the highest average high temperature) is October (32.9°C).
The months with the lowest average high temperature are January, February and July (30.1°C).

  • Average low temperature in September: 24.4°C

The month with the highest average low temperature is November (26.5°C).
The coldest month (with the lowest average low temperature) is August (24.2°C).

Average pressure in September
Kepunten, Indonesia
  • Average pressure in September: 1011.3mbar

The month with the highest atmospheric pressure is August (1011.4mbar).
The month with the lowest atmospheric pressure is December (1008.7mbar).

Average wind speed in September
Kepunten, Indonesia
  • Average wind speed in September: 9.7km/h

The windiest month (with the highest average wind speed) is August (9.9km/h).
The calmest month (with the lowest average wind speed) is April (6.3km/h).

Average humidity in September
Kepunten, Indonesia
  • Average humidity in September: 65%

The month with the highest relative humidity is February (79%).
The month with the lowest relative humidity is October (63%).

Average rainfall in September
Kepunten, Indonesia
  • Average rainfall in September: 8mm

The wettest month (with the highest rainfall) is February (179mm).
The driest month (with the least rainfall) is August (4mm).

Average rainfall days in September
Kepunten, Indonesia
  • Average rainfall days in September: 4.1 days

The month with the highest number of rainy days is January (27 days).
The month with the least rainy days is August (3.7 days).

Average daylight in September /
Average sunshine in September
Kepunten, Indonesia
  • Average daylight in September: 12h and 1min

The month with the longest days is December (Average daylight: 12h and 30min).
The month with the shortest days is June (Average daylight: 11h and 42min).

  • Average sunshine in September: 9h and 5min

The months with the most sunshine are August, September and October (Average sunshine: 9h and 54min).
The month with the least sunshine is January (Average sunshine: 8h and 6min).

Average sunshine days in September
Kepunten, Indonesia
  • Average sunshine days in September: 23.7 days

The month with the most sunshine days is August (26 days).
The month with the least sunshine days is February (2.8 days).

Average UV index in September
Kepunten, Indonesia
  • Average UV index in September: 7

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

Average cloud cover in September
Kepunten, Indonesia
  • Average cloud cover in September: 12

The month with the most cloud cover is January (Cloud cover 44).
The month with the least cloud cover is August (Cloud cover 11).

Average visibility in September
Kepunten, Indonesia
  • Average visibility in September: 10km

The months with the highest visibility are March, April, May, June, July, August, September, October, November and December (10km).
The months with the lowest visibility are January and February (9km).

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