September weather forecastNatal, Indonesia

September

Weather in September

The first month of the autumn, September, is still a tropical month in Natal, Indonesia, with an average temperature varying between 20.6°C (69.1°F) and 30.3°C (86.5°F).

Temperature

September ushers in an average high-temperature of a still hot 30.3°C (86.5°F), aligning closely with the preceding month. During the nights in September, the temperature in Natal averages to an agreeable 20.6°C (69.1°F).

Heat index

In September, the heat index is computed to be a torrid 39°C (102.2°F). Adopt additional preventive measures, heat cramps and heat exhaustion are potential outcomes. Prolonged activity may trigger heatstroke.
In the scope of the heat index, its values resonate with shade and light wind conditions. With exposure to direct sunshine, the heat index could climb by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'feels like', gauges the sensation of temperature factoring in the air's moisture content. Elements such as metabolic variations, pregnancy, and physical exertion can shape one's weather perception. Do note, being directly under sun rays can amplify the heat you feel, potentially raising the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are largely significant for babies and toddlers. Young individuals usually face greater risks than adults as their sweat production is less. Also, their larger skin surface relative to their small bodies and the high heat generation due to their activity contributes to their vulnerability.
In the face of high temperatures, the human body's reflex is to perspire, leveraging sweat evaporation for cooling. During high air temperature and humidity (high heat index), the process of perspiration is hindered, intensifying the sensation of heat. When heat surpasses the body's release mechanisms, dehydration and overheating risks become pronounced.

Humidity

In September, the average relative humidity in Natal is 80%.

Rainfall

In Natal, Indonesia, during September, the rain falls for 23.2 days and regularly aggregates up to 99mm (3.9") of precipitation. Throughout the year, there are 299.3 rainfall days, and 2350mm (92.52") of precipitation is accumulated.

Daylight

The average length of the day in September in Natal is 12h and 7min.
On the first day of the month, sunrise is at 06:19 and sunset at 18:27. On the last day of September, sunrise is at 06:10 and sunset at 18:16 WIB.

Sunshine

In September, the average sunshine is 8.6h.

UV index

The months with the lowest UV index in Natal are January through June, August through December, with an average maximum UV index of 6. A UV Index value of 6 to 7 symbolizes a high health risk from exposure to the Sun's UV rays for the average person.
Note: A daily maximum UV index of 6 in September translates into the following instructions:
Evade overexposure. Individuals with fair skin risk burning in under 20 minutes. Make an effort to avoid direct sun exposure between 10 a.m. and 4 p.m., the peak period for UV radiation, and note that objects like parasols or canopies might not offer full sun protection. Wearing a wide-brim hat can block approximately 50% of UV radiation, protecting the eyes.

Updated: Jan 25, 2024
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

During September, Natal experiences an average high-temperature of 30.3°C (86.5°F) and a low-temperature of 20.6°C (69.1°F). In September, the average heat index (a.k.a. 'felt air temperature', 'apparent temperature'), which takes the relative humidity and factors it into the air temperature reading, is computed to be 39°C (102.2°F).

In September, the average relative humidity is 80%.

In Natal, during September, the rain falls for 23.2 days and regularly aggregates up to 99mm (3.9") of precipitation.

In Natal, the average day length in September is 12h and 7min.

On the first day of September in Natal, sunrise is at 06:19 and sunset at 18:27. On the last day of the month, sunrise is at 06:10 and sunset at 18:16 WIB.

In September, the average sunshine duration is 8.6h.

January through June, August through December, with an average maximum UV index of 6, are months with the lowest UV index.

In Natal, the average daily maximum UV index in September is 6. A UV Index of 6 to 7 symbolizes a high health risk from unprotected exposure to UV radiation.

Today

Tomorrow

Long-term

Year J F M A M J J A September O N D

Aug

September

Oct

Average high temperature

30.8°C

30.3°C

30.1°C

Average low temperature

Average pressure

Average wind speed

Average max. wind speed

4.7km/h

4.3km/h

4.2km/h

Average wind speed gusts

Average humidity

Average rainfall

Average rainfall days

Average daylight

Average sunshine

Average sunshine days

3.5

Average UV index

Average cloud cover

Average visibility

Average temperature in September
Natal, Indonesia

Average high temperature in September: 30.3°C

The warmest month (with the highest average high temperature) is June (31°C).
The month with the lowest average high temperature is November (28.8°C).

Average low temperature in September: 20.6°C

The month with the highest average low temperature is May (21.3°C).
The coldest month (with the lowest average low temperature) is January (20.3°C).

Average pressure in September
Natal, Indonesia

Average pressure in September: 1010.8mbar

The month with the highest atmospheric pressure is September (1010.8mbar).
The month with the lowest atmospheric pressure is May (1009.7mbar).

Average wind speed in September
Natal, Indonesia

Average wind speed in September: 4km/h

The windiest month (with the highest average wind speed) is July (4.4km/h).
The calmest month (with the lowest average wind speed) is April (3.2km/h).

Average humidity in September
Natal, Indonesia

Average humidity in September: 80%

The month with the highest relative humidity is November (87%).
The months with the lowest relative humidity are June and July (78%).

Average rainfall in September
Natal, Indonesia

Average rainfall in September: 99mm

The wettest month (with the highest rainfall) is November (288mm).
The driest month (with the least rainfall) is August (84mm).

Average rainfall days in September
Natal, Indonesia

Average rainfall days in September: 23.2 days

The month with the highest number of rainy days is November (29.1 days).
The month with the least rainy days is July (16.6 days).

Average daylight in September /
Average sunshine in September
Natal, Indonesia

Average daylight in September: 12h and 6min

The month with the longest days is June (Average daylight: 12h and 12min).
The month with the shortest days is December (Average daylight: 12h and 6min).

Average sunshine in September: 8h and 36min

The months with the most sunshine are June and July (Average sunshine: 8h and 42min).
The month with the least sunshine is November (Average sunshine: 6h and 48min).

Average sunshine days in September
Natal, Indonesia

Average sunshine days in September: 5 days

The month with the most sunshine days is July (12 days).
The month with the least sunshine days is November (0.5 days).

Average UV index in September
Natal, Indonesia

Average UV index in September: 6

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

Average cloud cover in September
Natal, Indonesia

Average cloud cover in September: 41

The month with the most cloud cover is November (Cloud cover 56).
The month with the least cloud cover is June (Cloud cover 35).

Average visibility in September
Natal, Indonesia

Average visibility in September: 8km

The months with the highest visibility are June and July (9km).
The months with the lowest visibility are January, February, April, November and December (7km).