September weather forecast
Tanjakan, Indonesia

September

Weather in September

September, the first month of the spring in Tanjakan, is still a tropical month, with temperature in the range of an average high of 30.4°C (86.7°F) and an average low of 25.6°C (78.1°F).

Temperature

The commencement of September introduces an average high-temperature of a still tropical 30.4°C (86.7°F), closely mirroring the preceding month. Tanjakan registers an average low-temperature of 25.6°C (78.1°F) throughout September, a modest decrease from its daytime highs.

Heat index

For most parts of September, the heat index is computed to be a torrid 36°C (96.8°F). Take special precautions - heat exhaustion and heat cramps are expected. Heatstroke may occur with lengthy activity.
Heat index's context suggests values are appropriate for shady areas and slight breezes. The heat index has the possibility to be enhanced by 15 Fahrenheit (8 Celsius) degrees when there is direct sun exposure.
Note: The heat index, also known as 'apparent temperature' or 'real feel', provides an understanding of perceived warmth by combining temperature and relative humidity. 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. In the direct sunlight, the weather's impact can be amplified, possibly boosting the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly relevant to babies and toddlers. Youngsters generally face more threats than adults given their lesser ability to sweat. Coupled with their larger skin surface relative to their small bodies and higher heat production due to their activities, they are more endangered.
When it comes to cooling down, the human body's primary method is through perspiration, making use of sweat evaporation to eliminate excess heat. An increase in relative humidity hinders the body's normal cooling function by reducing evaporation, thereby decreasing the rate of body cooling and enhancing the sense of warmth. Inadequate heat shedding in the face of rising body temperatures hints at potential dehydration risks.

Humidity

In Tanjakan, the average relative humidity in September is 70%.

Rainfall

In September, the rain falls for 14.4 days. Throughout September, 42mm (1.65") of precipitation is accumulated. Throughout the year, there are 256 rainfall days, and 1133mm (44.61") of precipitation is accumulated.

Daylight

In September, the average length of the day is 12h and 4min.
On the first day of September, sunrise is at 05:53 and sunset at 17:53. On the last day of the month, sunrise is at 05:39 and sunset at 17:48 WIB.

Sunshine

In Tanjakan, the average sunshine in September is 9.7h.

UV index

January through December, with an average maximum UV index of 7, are months with the highest UV index. January through December, with an average maximum UV index of 7, are months with the lowest UV index. A UV Index value of 6 to 7 symbolizes a high health risk from unsafe exposure to UV radiation for ordinary individuals.
Note: The maximum daily UV index, 7 in September, converts into the following recommendations:
Stay clear of intense sun exposure. Solar protection is of utmost significance. Stay out of direct sunlight and seek shade between 10 a.m. and 4 p.m., when UV radiation is strongest, but remember that shade devices may not offer full sun protection. On days when the sun blazes, arm yourself with sunglasses that block UVA and UVB radiation.

Frequently asked questions

How hot is September in Tanjakan?
The high-temperature during September is 30.4°C (86.7°F) and the low-temperature is 25.6°C (78.1°F). The average heat index (a.k.a. 'apparent temperature', 'felt air temperature'), which represents the influence of relative humidity on air temperature, in September is computed to be 36°C (96.8°F).
What is the average humidity in September?
In Tanjakan, the average relative humidity in September is 70%.
How many days does it rain in September?
In Tanjakan, during September, the rain falls for 14.4 days and regularly aggregates up to 42mm (1.65") of precipitation.
What is the average length of the day in September?
In Tanjakan, the average day length in September is 12h and 4min.
When are sunrise and sunset in September?
In September, on the first day of the month, sunrise is at 05:53 and sunset at 17:53. On the last day of the month, sunrise is at 05:39 and sunset at 17:48 WIB.
How long on average sun shines in September in Tanjakan?
In Tanjakan, the average sunshine duration in September is 9.7h.
What are the months with the highest UV index?
The months with the highest UV index are January through December, with an average maximum UV index of 7.
What is the month with the lowest UV index?
The months with the lowest UV index are January through December, with an average maximum UV index of 7.
How high is the UV index in September?
In Tanjakan, the average daily maximum UV index in September is 7. A UV Index value of 6 to 7 symbolizes a high hazard to health from unsafe exposure to Sun's UV rays.
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
Tanjakan, Indonesia
  • Average high temperature in September: 30.4°C

The warmest month (with the highest average high temperature) is October (31°C).
The month with the lowest average high temperature is February (29.5°C).

  • Average low temperature in September: 25.6°C

The month with the highest average low temperature is November (26.9°C).
The coldest month (with the lowest average low temperature) is July (25.4°C).

Average pressure in September
Tanjakan, Indonesia
  • Average pressure in September: 1011mbar

The month with the highest atmospheric pressure is September (1011mbar).
The month with the lowest atmospheric pressure is December (1009.2mbar).

Average wind speed in September
Tanjakan, Indonesia
  • Average wind speed in September: 9.4km/h

The windiest month (with the highest average wind speed) is January (13.6km/h).
The calmest month (with the lowest average wind speed) is November (9.3km/h).

Average humidity in September
Tanjakan, Indonesia
  • Average humidity in September: 70%

The month with the highest relative humidity is February (76%).
The month with the lowest relative humidity is October (69%).

Average rainfall in September
Tanjakan, Indonesia
  • Average rainfall in September: 42mm

The wettest month (with the highest rainfall) is February (145mm).
The driest month (with the least rainfall) is August (40mm).

Average rainfall days in September
Tanjakan, Indonesia
  • Average rainfall days in September: 14.4 days

The month with the highest number of rainy days is March (25.5 days).
The month with the least rainy days is August (13.4 days).

Average daylight in September /
Average sunshine in September
Tanjakan, 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 48min).

  • Average sunshine in September: 9h and 4min

The month with the most sunshine is March (Average sunshine: 10h and 18min).
The month with the least sunshine is July (Average sunshine: 7h and 18min).

Average sunshine days in September
Tanjakan, Indonesia
  • Average sunshine days in September: 11.9 days

The month with the most sunshine days is August (14.3 days).
The month with the least sunshine days is April (4 days).

Average UV index in September
Tanjakan, 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
Tanjakan, Indonesia
  • Average cloud cover in September: 21

The month with the most cloud cover is January (Cloud cover 46).
The months with the least cloud cover are August and September (Cloud cover 21).

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

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

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