September weather forecast
Sukoharjo, Indonesia

September

Weather in September

September, the first month of the spring in Sukoharjo, is a hot month, with an average temperature fluctuating between 30.6°C (87.1°F) and 21.1°C (70°F).

Temperature

With the transition into September, Sukoharjo notes an average high-temperature of a hot 30.6°C (87.1°F), closely resembling August. September nights cool down to an average low-temperature of 21.1°C (70°F).

Heat index

September's heat index is appraised at a very hot 38°C (100.4°F). Undertake additional precautions, heat cramps and heat exhaustion could happen. Heatstroke could occur from sustained activity.
When considering the heat index, it's pivotal to note it is for shade and mild wind conditions. Exposing to direct sunshine may enhance heat index values by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'felt air temperature', unifies temperature and humidity readings to offer a comprehensive feel of warmth. The experience of temperature can be subjective, varying based on the individual's activity and heat perception, influenced by factors like wind, attire, and metabolic variations. Direct exposure to sun rays can potentially augment the heat sensation, elevating the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly important for children. Young people are generally more susceptible than adults because they perspire less. Furthermore, their proportionally larger skin surface to their petite bodies and the increased heat output from their actions add to the risk.
Evaporating sweat, thanks to perspiration, acts as a natural air conditioner for the human body. In the presence of abundant moisture in the atmosphere, the cooling process through evaporation is hindered, causing the body to feel excessively warm. Overheating dangers loom when the body's heat release mechanisms are overshadowed by excessive gain.

Humidity

With an average relative humidity of 74%, September is the least humid month.

Rainfall

In Sukoharjo, in September, it is raining for 13.8 days, with typically 48mm (1.89") of accumulated precipitation. Throughout the year, there are 277.4 rainfall days, and 2063mm (81.22") 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 05:37 and sunset at 17:35. On the last day of the month, sunrise is at 05:21 and sunset at 17:31 WIB.

Sunshine

August and September, with an average of 9.2h of sunshine, are months with the most sunshine.

UV index

The months with the highest UV index are September and October, with an average maximum UV index of 7. A UV Index of 6 to 7 symbolizes a high health risk from exposure to the Sun's UV rays for average individuals.
Note: A daily maximum UV index of 7 in September translates into the following instructions:
Eschew overexposure. Those with light skin may suffer burns in fewer than 20 minutes. Avoid direct Sun exposure from 10 a.m. to 4 p.m., a period when UV radiation is most intense, and remember that not all shade structures provide full protection. Loose clothes with a tight weave are optimal for safeguarding yourself against the Sun's rays.

Frequently asked questions

How hot is it in September?
During September, Sukoharjo experiences an average high-temperature of 30.6°C (87.1°F) and a low-temperature of 21.1°C (70°F). In September, the average heat index (a.k.a. 'felt air temperature', 'feels like'), which factors the actual air temperature with the relative humidity, is appraised at 38°C (100.4°F).
What is the least humid month?
The least humid month in Sukoharjo is September, with an average relative humidity of 74%.
What is the average humidity in September in Sukoharjo?
In Sukoharjo, the average relative humidity in September is 74%.
How much does it rain in September?
In Sukoharjo, in September, during 13.8 rainfall days, 48mm (1.89") of precipitation is typically accumulated.
How many hours of daylight does Sukoharjo have in September?
In Sukoharjo, Indonesia, the average day length in September is 12h and 4min.
When are sunrise and sunset in September?
On the first day of September in Sukoharjo, sunrise is at 05:37 and sunset at 17:35. On the last day of the month, sunrise is at 05:21 and sunset at 17:31 WIB.
What are the months with the most sunshine?
The months with the most sunshine are August and September, with an average of 9.2h of sunshine.
How long on average sun shines in September?
In Sukoharjo, the average sunshine duration in September is 9.2h.
When is the highest UV index?
The months with the highest UV index are September and October, with an average maximum UV index of 7.
What is the UV index intensity in September?
The average daily maximum UV index in September in Sukoharjo 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
Sukoharjo, Indonesia
  • Average high temperature in September: 30.6°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 (28.4°C).

  • Average low temperature in September: 21.1°C

The months with the highest average low temperature are January, February and November (22.3°C).
The coldest month (with the lowest average low temperature) is August (20.3°C).

Average pressure in September
Sukoharjo, Indonesia
  • Average pressure in September: 1011.6mbar

The months with the highest atmospheric pressure are August and September (1011.6mbar).
The month with the lowest atmospheric pressure is December (1009mbar).

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

The windiest month (with the highest average wind speed) is September (9.7km/h).
The calmest month (with the lowest average wind speed) is April (5.6km/h).

Average humidity in September
Sukoharjo, Indonesia
  • Average humidity in September: 74%

The months with the highest relative humidity are January, February, March and April (85%).
The month with the lowest relative humidity is September (74%).

Average rainfall in September
Sukoharjo, Indonesia
  • Average rainfall in September: 48mm

The wettest month (with the highest rainfall) is March (313mm).
The driest month (with the least rainfall) is August (29mm).

Average rainfall days in September
Sukoharjo, Indonesia
  • Average rainfall days in September: 13.8 days

The month with the highest number of rainy days is January (30.5 days).
The month with the least rainy days is August (8.9 days).

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

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 1min

The months with the most sunshine are August and September (Average sunshine: 9h and 12min).
The month with the least sunshine is January (Average sunshine: 7h and 0min).

Average sunshine days in September
Sukoharjo, Indonesia
  • Average sunshine days in September: 13 days

The month with the most sunshine days is August (19.4 days).
The month with the least sunshine days is February (0.2 days).

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

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

Average cloud cover in September
Sukoharjo, Indonesia
  • Average cloud cover in September: 34

The month with the most cloud cover is January (Cloud cover 60).
The month with the least cloud cover is August (Cloud cover 33).

Average visibility in September
Sukoharjo, Indonesia
  • Average visibility in September: 9km

The months with the highest visibility are June, July, August, September and October (9km).
The months with the lowest visibility are January, February, March, April, May, November and December (8km).

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