September weather forecastRancagua, Chile

September

Weather in September

September takes Rancagua a step forward towards spring, heralding a gradual surge in temperature, climatic conditions, and outdoor activities. The ambiance embraces a new charm, removing the winter frost and welcoming a warm breeze. Bearing witness to an average high of 14.7°C (58.5°F), the weather creates a dramatic shift from the preceding month. Rainfall also meets a noticeable decrease, with precipitation measuring 41mm (1.61") over 7.8 days. Daylight hours begin to lengthen, and cloud cover declines, marking the onset of the vibrant spring season in Rancagua.

Temperature

Rancagua records an average high-temperature of a refreshing 14.7°C (58.5°F) in September, maintaining a close correlation with August's 12.8°C (55°F). Rancagua's nighttime temperature during September is consistently averaged at a cold 3°C (37.4°F).

Humidity

The average relative humidity in September is 62%.

Rainfall

In Rancagua, during September, the rain falls for 7.8 days and regularly aggregates up to 41mm (1.61") of precipitation. Throughout the year, there are 64.2 rainfall days, and 389mm (15.31") of precipitation is accumulated.

Snowfall

In Rancagua, snow does not fall in January through June, August through December.

Daylight

In September, the average length of the day in Rancagua is 11h and 54min.
On the first day of September in Rancagua, sunrise is at 07:00 and sunset at 18:25 -04. On the last day of the month, sunrise is at 07:19 and sunset at 19:45 -03.
Note: On Sunday, 08. September 2024, at 00:00, Daylight Saving Time starts, and the time zone changes from -04 to -03. Daylight Saving Time lasts until Sunday, 06. April 2025, at 00:00; consequently, the time zone reverts from -03 to -04.

Sunshine

In September, the average sunshine is 8.4h.

UV index

In Rancagua, Chile, the average daily maximum UV index in September is 3. A UV Index estimate of 3 to 5 represents a moderate health risk from unprotected exposure to Sun's UV rays for the ordinary person.
Note: An average UV index of 3 in September transforms into this advice:
Be vigilant - Preventing sunburn is recommended. Solar radiation is at its peak intensity during midday, so it's advisable to stay indoors or in the shade. In the presence of strong sunlight, it's crucial to wear sunglasses that ward off UVA and UVB rays.

Updated: Jan 24, 2024
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

The high-temperature during September is 14.7°C (58.5°F) and the low-temperature is 3°C (37.4°F). The average heat index (a.k.a. 'real feel', 'apparent temperature'), which represents the influence of relative humidity on air temperature, in January is appraised at 27°C (80.6°F).

In Rancagua, the average relative humidity in September is 62%.

In September, in Rancagua, the rain falls for 7.8 days. Throughout September, 41mm (1.61") of precipitation is accumulated.

January through June, August through December are months without snowfall in Rancagua.

The average day length in September in Rancagua is 11h and 54min.

In September, on the first day of the month, sunrise is at 07:00 and sunset at 18:25 -04. On the last day of the month, in Rancagua, sunrise is at 07:19 and sunset at 19:45 -03.

On Sunday, 08. September 2024, at 00:00, Daylight Saving Time starts in Rancagua, and the time zone changes from -04 to -03. DST ends on Sunday, 06. April 2025, at 00:00.

In September, the average sunshine duration in Rancagua, Chile, is 8.4h.

The average daily maximum UV index in September in Rancagua, Chile, is 3. A UV Index value of 3 to 5 symbolizes a medium hazard to health 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

12.8°C

14.7°C

18.1°C

Average low temperature

Average pressure

Average wind speed

Average max. wind speed

7.7km/h

7.2km/h

7.8km/h

Average wind speed gusts

Average humidity

Average rainfall

Average rainfall days

Average snowfall

Average snowfall days

Average daylight

Average sunshine

Average sunshine days

20.3

20.4

22.9

Average UV index

Average cloud cover

Average visibility

Average temperature in September
Rancagua, Chile

Average high temperature in September: 14.7°C

The warmest month (with the highest average high temperature) is January (27.1°C).
The month with the lowest average high temperature is July (10.6°C).

Average low temperature in September: 3°C

The month with the highest average low temperature is January (11.8°C).
The coldest month (with the lowest average low temperature) is July (1.7°C).

Average pressure in September
Rancagua, Chile

Average pressure in September: 1019.1mbar

The month with the highest atmospheric pressure is July (1019.8mbar).
The month with the lowest atmospheric pressure is February (1014.3mbar).

Average wind speed in September
Rancagua, Chile

Average wind speed in September: 6.8km/h

The windiest month (with the highest average wind speed) is June (7.9km/h).
The calmest month (with the lowest average wind speed) is April (6.2km/h).

Average humidity in September
Rancagua, Chile

Average humidity in September: 62%

The months with the highest relative humidity are July and August (64%).
The month with the lowest relative humidity is March (40%).

Average rainfall in September
Rancagua, Chile

Average rainfall in September: 41mm

The wettest month (with the highest rainfall) is June (105mm).
The driest month (with the least rainfall) is March (2mm).

Average rainfall days in September
Rancagua, Chile

Average rainfall days in September: 7.8 days

The month with the highest number of rainy days is June (9.1 days).
The months with the least rainy days are January and February (1.8 days).

Average snowfall in September
Rancagua, Chile

Average snowfall in September: 0mm

The month with the highest snowfall is July (4mm).
The months with the least snowfall are January, February, March, April, May, June, August, September, October, November and December (0mm).

Average snowfall days in September
Rancagua, Chile

Average snowfall days in September: 0 days

The month with the highest number of snowfall days is July (0.3 days).
The months with the least snowfall days are January, February, March, April, May, June, August, September, October, November and December (0 days).

Average daylight in September /
Average sunshine in September
Rancagua, Chile

Average daylight in September: 11h and 54min

The month with the longest days is December (Average daylight: 14h and 24min).
The month with the shortest days is June (Average daylight: 9h and 54min).

Average sunshine in September: 8h and 24min

The months with the most sunshine are January and February (Average sunshine: 9h and 54min).
The month with the least sunshine is June (Average sunshine: 7h and 42min).

Average sunshine days in September
Rancagua, Chile

Average sunshine days in September: 20.4 days

The month with the most sunshine days is March (28.8 days).
The month with the least sunshine days is June (20.2 days).

Average UV index in September
Rancagua, Chile

Average UV index in September: 3

The month with the highest UV index is January (UV index 6).
The months with the lowest UV index are June and July (UV index 2).

Average cloud cover in September
Rancagua, Chile

Average cloud cover in September: 26

The month with the most cloud cover is June (Cloud cover 32).
The month with the least cloud cover is February (Cloud cover 4).

Average visibility in September
Rancagua, Chile

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).