September weather forecast
Ruteng, Indonesia

September

Weather in September

The first month of the spring, September, is also a moderately hot month in Ruteng, Indonesia, with temperature in the range of an average high of 29.1°C (84.4°F) and an average low of 23.2°C (73.8°F).

Temperature

September's onset records an average high-temperature of a still moderately hot 29.1°C (84.4°F), a near match to August's 27.9°C (82.2°F). Ruteng in September anticipates an average nighttime temperature of 23.2°C (73.8°F).

Heat index

September's mean heat index is calculated to be a tropical 34°C (93.2°F). Adopt special protective actions against heat exhaustion and heat cramps. Long-duration activity risks heatstroke.
Factoring in the heat index, values are geared towards shaded areas with light breezes. The direct sun can potentially cause the heat index to increase by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'real feel', is the result of factoring in humidity to the air temperature, indicating perceived warmth. The effect of weather is individual, with a variety of people experiencing it differently due to distinctions in body mass, height, and level of activity. Remember, direct sunlight exposure can heighten the heat impact and might increase the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are extremely significant for babies and toddlers. Young ones often underestimate the need for rest and rehydration. Thirst appears late in dehydration - hence, it is important to keep hydrated, particularly during prolonged physical activities.

Humidity

In September, the average relative humidity is 73%.

Rainfall

In Ruteng, during September, the rain falls for 4.4 days and regularly aggregates up to 6mm (0.24") of precipitation. In Ruteng, during the entire year, the rain falls for 191.2 days and collects up to 892mm (35.12") of precipitation.

Daylight

The average length of the day in September is 12h and 4min.
On the first day of September, sunrise is at 05:59 and sunset at 17:56. On the last day of the month, sunrise is at 05:42 and sunset at 17:53 WITA.

Sunshine

In Ruteng, the average sunshine in September is 9.6h.

UV index

January through June, August through December, 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 threat to health from exposure to the Sun's UV rays for the average person.
Note: The maximum daily UV index, 7 in September, converts into the following recommendations:
Refrain from overexposure. Fair-skinned individuals could burn in under 20 minutes. The Sun's UV radiation is most intense from 10 a.m. to 4 p.m. Try to avoid direct sun exposure during these hours. Wearing a wide-brim hat can block approximately 50% of UV radiation, protecting the eyes.

Frequently asked questions

How hot does it get in September?
September temperatures vary between a high-temperature of 29.1°C (84.4°F) and a low-temperature of 23.2°C (73.8°F). In September, the average heat index (a.k.a. 'felt air temperature', 'feels like'), which represents the influence of relative humidity on air temperature, is calculated to be 34°C (93.2°F).
What is the average humidity in September?
In September, the average relative humidity is 73%.
How many days does it rain in September?
In Ruteng, during September, the rain falls for 4.4 days and regularly aggregates up to 6mm (0.24") of precipitation.
How many hours of daylight does Ruteng have in September?
In Ruteng, the average day length in September is 12h and 4min.
When is the sunrise / sunset in September?
On the first day of September, sunrise is at 05:59 and sunset at 17:56. On the last day of the month, sunrise is at 05:42 and sunset at 17:53 WITA.
How many hours of sunshine does Ruteng have in September?
In September, the average sunshine duration in Ruteng is 9.6h.
What are the months with the highest UV index?
The months with the highest UV index are January through June, August through December, with an average maximum UV index of 7.
What is the UV index reading in September?
In Ruteng, the average daily maximum UV index in September is 7. A UV Index value of 6 to 7 symbolizes a high health vulnerability from 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
Ruteng, Indonesia
  • Average high temperature in September: 29.1°C

The warmest months (with the highest average high temperature) are October and November (30.5°C).
The month with the lowest average high temperature is July (27.3°C).

  • Average low temperature in September: 23.2°C

The month with the highest average low temperature is December (25.6°C).
The coldest month (with the lowest average low temperature) is August (22.8°C).

Average pressure in September
Ruteng, Indonesia
  • Average pressure in September: 1012mbar

The month with the highest atmospheric pressure is August (1012.5mbar).
The months with the lowest atmospheric pressure are January and December (1007.9mbar).

Average wind speed in September
Ruteng, Indonesia
  • Average wind speed in September: 12.9km/h

The windiest month (with the highest average wind speed) is July (16.5km/h).
The calmest month (with the lowest average wind speed) is March (8.2km/h).

Average humidity in September
Ruteng, Indonesia
  • Average humidity in September: 73%

The months with the highest relative humidity are January, February and March (81%).
The month with the lowest relative humidity is October (72%).

Average rainfall in September
Ruteng, Indonesia
  • Average rainfall in September: 6mm

The wettest month (with the highest rainfall) is January (181mm).
The driest months (with the least rainfall) are July and August (1mm).

Average rainfall days in September
Ruteng, Indonesia
  • Average rainfall days in September: 4.4 days

The month with the highest number of rainy days is January (29.7 days).
The month with the least rainy days is August (1.9 days).

Average daylight in September /
Average sunshine in September
Ruteng, 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 36min).

  • Average sunshine in September: 9h and 4min

The month with the most sunshine is November (Average sunshine: 10h and 36min).
The month with the least sunshine is May (Average sunshine: 6h and 54min).

Average sunshine days in September
Ruteng, Indonesia
  • Average sunshine days in September: 23.9 days

The month with the most sunshine days is August (28.8 days).
The month with the least sunshine days is January (0.3 days).

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

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

Average cloud cover in September
Ruteng, Indonesia
  • Average cloud cover in September: 14

The month with the most cloud cover is January (Cloud cover 44).
The month with the least cloud cover is October (Cloud cover 13).

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

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

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