Chile (Santiago)
September
Weather in Chile for September 2025
Your guide to Chile weather in September - trends and predictions
In general, the average temperature in Chile at the beginning of September is 15.7 °C. As the month progressed, temperatures tended to moderately rise, reaching an average of 17.1 °C by the end of September.
The climate of Chile in September is notably wet, with an average of 12 rainy days.
Is September a good time to visit Chile? check out the best time to travel to Chile page.
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18
Dry days
12
Rainy days
0
Snow days
14°/5°
Temperatures
11 km/h
Avg max wind
67 %
Avg humidity
Chile in September average weather
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| Mon. | Tue. | Wed. | Thu. | Fri. | Sat. | Sun. |
|---|---|---|---|---|---|---|
| 1  18° | 2 14° | 3  14° | 4 17° | 5  18° | 6  15° | 7  14° |
| 8 15° | 9 16° | 10 14° | 11 13° | 12  13° | 13 15° | 14  19° |
| 15  21° | 16 20° | 17 15° | 18 16° | 19 17° | 20 16° | 21 16° |
| 22 13° | 23 14° | 24 15° | 25 15° | 26 16° | 27 18° | 28 18° |
| 29 19° | 30 19° |
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Temperatures trend during September in Chile
See the weather trend as well as the moving average line
September weather day by day
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| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| 1 Sept. | Light rain shower | 18° /7° | 0.8 mm | 5 | |
| 2 Sept. | Light rain shower | 14° /2° | 8 mm | 4 | |
| 3 Sept. | Light rain | 14° /5° | 1.7 mm | 4 | |
| 4 Sept. | Light rain shower | 17° /6° | 2.5 mm | 5 | |
| 5 Sept. | Overcast | 18° /7° | 0.2 mm | 5 | |
| 6 Sept. | Moderate or heavy rain with thunder | 15° /5° | 27.5 mm | 5 | |
| 7 Sept. | Moderate rain at times | 14° /4° | 2.1 mm | 5 | |
| 8 Sept. | Patchy rain possible | 15° /6° | 0.6 mm | 5 | |
| 9 Sept. | Light rain shower | 16° /7° | 0.6 mm | 4 | |
| 10 Sept. | Patchy rain possible | 14° /5° | 2.2 mm | 4 | |
| 11 Sept. | Light rain shower | 13° /3° | 28.9 mm | 4 | |
| 12 Sept. | Thundery outbreaks possible | 13° /3° | 0.3 mm | 4 | |
| 13 Sept. | Overcast | 15° /5° | 0.3 mm | 5 | |
| 14 Sept. | Partly cloudy | 19° /9° | 0 mm | 6 | |
| 15 Sept. | Sunny | 21° /10° | 0 mm | 6 | |
| 16 Sept. | Partly cloudy | 20° /9° | 0 mm | 6 | |
| 17 Sept. | Light drizzle | 15° /7° | 0.2 mm | 4 | |
| 18 Sept. | Sunny | 16° /5° | 0.1 mm | 5 | |
| 19 Sept. | Patchy rain possible | 17° /5° | 0.1 mm | 5 | |
| 20 Sept. | Sunny | 16° /6° | 0 mm | 5 | |
| 21 Sept. | Sunny | 16° /8° | 0 mm | 5 | |
| 22 Sept. | Patchy rain possible | 13° /7° | 1.7 mm | 4 | |
| 23 Sept. | Overcast | 14° /5° | 5.1 mm | 4 | |
| 24 Sept. | Sunny | 15° /4° | 2.2 mm | 5 | |
| 25 Sept. | Patchy rain possible | 15° /2° | 0.4 mm | 4 | |
| 26 Sept. | Sunny | 16° /3° | 0.1 mm | 5 | |
| 27 Sept. | Sunny | 18° /6° | 0 mm | 5 | |
| 28 Sept. | Sunny | 18° /7° | 0 mm | 6 | |
| 29 Sept. | Sunny | 19° /6° | 0 mm | 6 | |
| 30 Sept. | Sunny | 19° /9° | 0.4 mm | 6 | |
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Important Notice
Our weather forecast for Chile in September is based on the analysis of historical data rather than real-time forecast models. While this provides a general overview, weather conditions can change. We recommend that you check the Chile forecast closer to your planned date for the most up-to-date weather information.
Chile in September - FAQ
What are the expected maximum and minimum temperatures in Chile during September?
During September, expect a variety of temperatures with highs around 14° and lows near 5°, suitable for diverse activities and preferences.
How much rainfall should be expected in Chile during September?
Significant rainfall exceeding 149.2 mm is expected in Chile during September, occurring over more than 12 days. Preparing for wet conditions is recommended in your planning.
What are the typical wind conditions in Chile during September?
The average wind speed in Chile during September is 11 km/h, suggesting breezy to windy conditions, depending on your activities.
What to pack to Chile in September?
As you prepare for your trip to Chile in September, it's important to consider the typical weather patterns for the time of year. Below is a carefully tailored packing list to ensure that your time in Chile, during September, is comfortable and enjoyable, regardless of the weather conditions.
- Clothing
- Warm Clothing: Sweaters, hoodies, long pants
- Rain Gear: Lightweight, waterproof clothing
- Footwear
- Waterproof Shoes
- Accessories
- Scarves: To protect you from the cold wind
- Gloves/Mittens: Essential for cold weather
- Warm Hats: Warm hats for insulation in cold weather
- Umbrellas/Raincoats: For rainy days
September rainfall patterns in Chile
Explore the daily rainfall trends and prepare for Chiles September weather 💧
UV exposure in Chile during September
Stay informed about UV levels for safe outdoor activities throughout the month of September ☀️
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