September weather forecastAdonara, Indonesia

September

Weather in September

The first month of the spring, September, is also a moderately hot month in Adonara, Indonesia, with an average temperature varying between 27.9°C (82.2°F) and 25.6°C (78.1°F).

Temperature

September's arrival registers an average high-temperature of a still moderately hot 27.9°C (82.2°F), closely aligning with the temperature of the previous month. In Adonara, September nights maintain a consistent temperature, with an average low of 25.6°C (78.1°F).

Heat index

The heat index for September is evaluated at a tropical 31°C (87.8°F). If one remains active during constant exposure, it might cause exhaustion and heat cramps.
In terms of the heat index, values are set with light wind and shade conditions in mind. Direct sunlight has the potential to heighten heat index values by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'feels like', ties air temperature with relative humidity to produce the perceived temperature sensation. Factors such as metabolic variations, being pregnant, and physical activity can impact an individual's weather perception. It is noteworthy to mention that direct sunlight exposure can augment the felt temperature, leading to an increase in the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are highly critical for babies and toddlers. Children often do not understand the need to rest and hydrate. Thirst is a late manifestation of dehydration - therefore, it is essential to stay hydrated, particularly during prolonged physical activities.

Humidity

In September, the average relative humidity is 73%.

Rainfall

In Adonara, during September, the rain falls for 6.2 days and regularly aggregates up to 13mm (0.51") of precipitation. In Adonara, during the entire year, the rain falls for 185.3 days and collects up to 1087mm (42.8") of precipitation.

Daylight

In Adonara, the average length of the day in September is 12h and 4min.
On the first day of the month, sunrise is at 05:48 and sunset at 17:45. On the last day of September, in Adonara, sunrise is at 05:32 and sunset at 17:42 WITA.

Sunshine

September has the most sunshine of the year, with an average of 9.9h of sunshine.

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 reading of 6 to 7 represents a high threat to health from exposure to the Sun's UV rays for the ordinary person.
Note: The maximum daily UV index of 7 during September translates into the following directions:
Adhere to precautions and respect sun safety doctrines. Avoiding sunburn is vital. 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. Loose clothes with a tight weave are optimal for safeguarding yourself against the Sun's rays.

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

Frequently asked questions

September temperatures vary between a high-temperature of 27.9°C (82.2°F) and a low-temperature of 25.6°C (78.1°F). The average heat index (a.k.a. 'feels like', 'apparent temperature'), which takes the relative humidity and factors it into the air temperature reading, in September is evaluated at 31°C (87.8°F).

The average relative humidity in September is 73%.

In Adonara, during September, the rain falls for 6.2 days and regularly aggregates up to 13mm (0.51") of precipitation.

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

In September, on the first day of the month, sunrise is at 05:48 and sunset at 17:45. On the last day of the month, sunrise is at 05:32 and sunset at 17:42 WITA.

With an average of 9.9h of sunshine, September has the most sunshine of the year.

The average sunshine duration in September is 9.9h.

The months with the highest UV index are January through December, with an average maximum UV index of 7.

The months with the lowest UV index are January through December, with an average maximum UV index of 7.

In September, the average daily maximum UV index is 7. A UV Index of 6 to 7 symbolizes a high health risk 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

27.5°C

27.9°C

29.2°C

Average low temperature

Average pressure

Average wind speed

Average max. wind speed

9km/h

8.3km/h

8km/h

Average wind speed gusts

Average humidity

Average rainfall

Average rainfall days

Average daylight

Average sunshine

Average sunshine days

27.3

22.9

18.5

Average UV index

Average cloud cover

Average visibility

Average temperature in September
Adonara, Indonesia

Average high temperature in September: 27.9°C

The warmest month (with the highest average high temperature) is November (29.7°C).
The month with the lowest average high temperature is July (27.4°C).

Average low temperature in September: 25.6°C

The month with the highest average low temperature is December (27.8°C).
The coldest month (with the lowest average low temperature) is August (25.1°C).

Average pressure in September
Adonara, Indonesia

Average pressure in September: 1011.5mbar

The month with the highest atmospheric pressure is August (1011.9mbar).
The month with the lowest atmospheric pressure is December (1007.8mbar).

Average wind speed in September
Adonara, Indonesia

Average wind speed in September: 7.9km/h

The windiest month (with the highest average wind speed) is January (14.6km/h).
The calmest month (with the lowest average wind speed) is November (7km/h).

Average humidity in September
Adonara, Indonesia

Average humidity in September: 73%

The months with the highest relative humidity are January and February (78%).
The month with the lowest relative humidity is August (71%).

Average rainfall in September
Adonara, Indonesia

Average rainfall in September: 13mm

The wettest month (with the highest rainfall) is January (235mm).
The driest months (with the least rainfall) are July and August (7mm).

Average rainfall days in September
Adonara, Indonesia

Average rainfall days in September: 6.2 days

The month with the highest number of rainy days is January (27.8 days).
The month with the least rainy days is August (2.7 days).

Average daylight in September /
Average sunshine in September
Adonara, 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 54min

The month with the most sunshine is September (Average sunshine: 9h and 54min).
The month with the least sunshine is July (Average sunshine: 7h and 30min).

Average sunshine days in September
Adonara, Indonesia

Average sunshine days in September: 22.9 days

The month with the most sunshine days is August (27.3 days).
The month with the least sunshine days is January (1.4 days).

Average UV index in September
Adonara, 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
Adonara, Indonesia

Average cloud cover in September: 14

The month with the most cloud cover is January (Cloud cover 47).
The month with the least cloud cover is August (Cloud cover 12).

Average visibility in September
Adonara, 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).