Weather in September 2025

Santiago weather in September 2025

°C °F

The average weather in Santiago in September

The weather in Santiago in September is very cold with temperatures between 3°C and 17°C, warm clothes are a must.

The wather in Santiago in September can vary between cold and nice weather days. Expect a few rainy days but usually not more than 3.

Our weather forecast can give you a great sense of what weather to expect in Santiago in September 2025.

If you’re planning to visit Santiago in the near future, we highly recommend that you review the 14 day weather forecast for Santiago before you arrive.

Temperatures
17° / 3°
Rainy Days
2
Snowy Days
0
Dry Days
28
Rainfall
30
mm
Sun Hours
11.3
Hrs

Explore the weather in Santiago in other months

Santiago annual weather

Month Temperatures Rainy Days Dry Days Snowy Days Rainfall Weather More details
January 25° / 12° 0 31 0 7 mm
Perfect
February 26° / 12° 1 27 0 4 mm
Perfect
March 25° / 11° 0 31 0 2 mm
Perfect
April 23° / 8° 1 30 0 5 mm
Perfect
May 19° / 6° 2 29 0 48 mm
Good
June 15° / 2° 4 25 1 116 mm
Good
July 14° / 1° 2 27 1 59 mm
Good
August 16° / 2° 3 28 0 69 mm
Good
September 17° / 3° 2 28 0 30 mm
Good
October 20° / 5° 2 29 0 19 mm
Good
November 23° / 8° 1 29 0 7 mm
Perfect
December 25° / 11° 1 30 0 4 mm
Perfect

Weather in Santiago in September - FAQ

What is the average temperature in Santiago in September?
The average temperature in Santiago in September is 3/17° C.
What is the chance of rain in Santiago in September?
On average, there are 2 rainy days in Santiago during September.
Weather wise, is September a good time to visit Santiago?
The weather in Santiago in September is good.
Can it snow in Santiago in September?
On average, there are 0 snowy days in Santiago in September.
More about the weather in Santiago