September weather forecastArauco, Chile

September

Weather in September

The first month of the spring, September, is still a refreshing month in Arauco, Chile, with temperature in the range of an average low of 7.2°C (45°F) and an average high of 14.8°C (58.6°F).

Temperature

The advent of September signifies a minor shift to an average high-temperature of a still mild 14.8°C (58.6°F), aligning closely with August. In September, the nighttime temperature in Arauco, Chile, lowers to an average of 7.2°C (45°F).

Humidity

The average relative humidity in September in Arauco is 78%.

Rainfall

In Arauco, in September, it is raining for 9.6 days, with typically 49mm (1.93") of accumulated precipitation. In Arauco, during the entire year, the rain falls for 96.1 days and collects up to 601mm (23.66") of precipitation.

Sea temperature

In Arauco, in September, the average water temperature is 12.2°C (54°F).
Note: One needs to be cautious in 12.2°C (54°F) waters. 13°C (55.4°F) is already forbidding, but sub-10°C (14°F) can seriously disrupt your breathing and lead to a frigid shock, considering one's well-being.

Daylight

In Arauco, the average length of the day in September is 11h and 53min.
On the first day of the month, sunrise is at 07:12 and sunset at 18:33 -04. On the last day of September, sunrise is at 07:29 and sunset at 19:56 -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 in Arauco, Chile, is 7.6h.

UV index

May through September, with an average maximum UV index of 3, are months with the lowest UV index in Arauco. A UV Index value of 3 to 5 symbolizes a moderate health risk from unprotected exposure to Sun's UV rays for the average person.
Note: In September, the maximum UV index of 3 translates into these guidelines:
Heed the precautions - Suggestions to avoid sunburn are made. To prevent harmful UV exposure, minimize direct contact with the Sun around midday. To mitigate harm from sun exposure, pick sunglasses offering UVA and UVB defense.

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

Frequently asked questions

The high-temperature, in September, in Arauco, is 14.8°C (58.6°F), while the low-temperature averages to 7.2°C (45°F).

In September, the average relative humidity is 78%.

In Arauco, Chile, during September, the rain falls for 9.6 days and regularly aggregates up to 49mm (1.93") of precipitation.

In Arauco, Chile, the average seawater temperature in September is 12.2°C (54°F). At temperatures below 10°C (50°F), swimming in a suitably protected swimsuit is feasible; otherwise, cold shock and loss of breathing control are imminent. Even a short swim, without thermal protection, at temperatures around 13°C (55.4°F) is not comfortable.

In Arauco, the average day length in September is 11h and 53min.

In September, on the first day of the month, sunrise is at 07:12 and sunset at 18:33 -04. On the last day of the month, sunrise is at 07:29 and sunset at 19:56 -03.

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

In Arauco, the average sunshine duration in September is 7.6h.

The months with the lowest UV index in Arauco are May through September, with an average maximum UV index of 3.

In September, the average daily maximum UV index in Arauco, Chile, is 3. A UV Index reading of 3 to 5 represents a medium 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

13.1°C

14.8°C

16.5°C

Average low temperature

Average pressure

Average wind speed

Average max. wind speed

13.3km/h

12.7km/h

13.3km/h

Average wind speed gusts

Average humidity

Average rainfall

Average rainfall days

15.4

9.6

8.2

Average sea temperature

Average daylight

Average sunshine

Average sunshine days

14.2

18.7

21.7

Average UV index

Average cloud cover

Average visibility

Average temperature in September
Arauco, Chile

Average high temperature in September: 14.8°C

The warmest month (with the highest average high temperature) is January (24.1°C).
The month with the lowest average high temperature is July (12.1°C).

Average low temperature in September: 7.2°C

The month with the highest average low temperature is January (12.7°C).
The coldest month (with the lowest average low temperature) is July (6.5°C).

Average pressure in September
Arauco, Chile

Average pressure in September: 1020mbar

The month with the highest atmospheric pressure is September (1020mbar).
The month with the lowest atmospheric pressure is February (1014.4mbar).

Average wind speed in September
Arauco, Chile

Average wind speed in September: 12.2km/h

The windiest month (with the highest average wind speed) is January (14.3km/h).
The calmest month (with the lowest average wind speed) is May (10.6km/h).

Average humidity in September
Arauco, Chile

Average humidity in September: 78%

The months with the highest relative humidity are June and July (83%).
The month with the lowest relative humidity is January (66%).

Average rainfall in September
Arauco, Chile

Average rainfall in September: 49mm

The wettest month (with the highest rainfall) is June (161mm).
The driest month (with the least rainfall) is January (3mm).

Average rainfall days in September
Arauco, Chile

Average rainfall days in September: 9.6 days

The month with the highest number of rainy days is July (16.4 days).
The month with the least rainy days is January (1.8 days).

Average sea temperature in September
Arauco, Chile

Average sea temperature in September: 12.2°C

The best months for swimming (with the highest average sea temperature) are January and March (15.3°C).
The coldest month (with the lowest average sea temperature) is August (11.8°C).

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

Average daylight in September: 11h and 54min

The month with the longest days is December (Average daylight: 14h and 42min).
The month with the shortest days is June (Average daylight: 9h and 36min).

Average sunshine in September: 7h and 36min

The month with the most sunshine is January (Average sunshine: 11h and 42min).
The month with the least sunshine is June (Average sunshine: 5h and 18min).

Average sunshine days in September
Arauco, Chile

Average sunshine days in September: 18.7 days

The month with the most sunshine days is January (28.6 days).
The month with the least sunshine days is July (13.5 days).

Average UV index in September
Arauco, Chile

Average UV index in September: 3

The months with the highest UV index are January, February, March, November and December (UV index 5).
The months with the lowest UV index are May, June, July, August and September (UV index 3).

Average cloud cover in September
Arauco, Chile

Average cloud cover in September: 35

The month with the most cloud cover is June (Cloud cover 46).
The month with the least cloud cover is January (Cloud cover 11).

Average visibility in September
Arauco, Chile

Average visibility in September: 9km

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