Chile (Santiago)
September
Weather in Chile for September 2026
Your guide to Chile weather in September - trends and predictions
Until now, September 2026 in Chile has been nearly identical to the historical average, with a temperature of 15.7 °C (showing only a slight deviation of 0.3 °C).
The forecast for the upcoming days in Chile predicts a temperature of 20.3 °C, which is slightly above the historical average.
In general, the average temperature in Chile at the beginning of September is 16 °C. As the month progressed, temperatures tended to significantly warm up, reaching an average of 19.3 °C by the end of September.
Chile experiences moderate rainfall in September, with an average of 6 rainy days and a total precipitation of 64.6 mm.
Temperatures
Rain 🌧️
24
Dry days
6
Rainy days
0
Snow days
17°/6°
Temperatures
12 km/h
Avg max wind
54 %
Avg humidity
Chile Weather September
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What’s the Weather Like in Chile This September?
Discover the average temperatures and weather trends across Chile’s cities this September.
Temperatures trend during September in Chile
See the weather trend as well as the moving average line
September weather in Chile day by day
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| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| 1 Sept. |  Overcast | 18° /7° | 0.4 mm | 4 | |
| 2 Sept. |  Light rain shower | 15° /5° | 4.2 mm | 4 | |
| 3 Sept. |  Light rain | 13° /5° | 1.1 mm | 4 | |
| 4 Sept. |  Sunny | 16° /6° | 1.3 mm | 5 | |
| 5 Sept. | Overcast | 18° /7° | 0.1 mm | 5 | |
| 6 Sept. | Sunny | 17° /6° | 13.8 mm | 5 | |
| 7 Sept. | Sunny | 15° /4° | 1.1 mm | 4 | |
| 8 Sept. | Patchy rain possible | 15° /6° | 0.3 mm | 4 | |
| 9 Sept. | Light rain shower | 17° /6° | 0.7 mm | 5 | |
| 10 Sept. | Patchy rain possible | 16° /6° | 1.7 mm | 4 | |
| 11 Sept. | Sunny | 16° /6° | 16.1 mm | 4 | |
| 12 Sept. | Sunny | 17° /6° | 0 mm | 6.5 | |
| 13 Sept. | Sunny | 20° /12° | 0 mm | 6.8 | |
| 14 Sept. |  Smoky haze | 22° /14° | 0 mm | 7.3 | |
| 15 Sept. | Smoky haze | 26° /16° | 0 mm | 7 | |
| 16 Sept. | Smoky haze | 21° /14° | 0 mm | 6 | |
| 17 Sept. | Overcast | 21° /12° | 0 mm | 6 | |
| 18 Sept. | Sunny | 20° /12° | 2.4 mm | 6 | |
| 19 Sept. | Overcast | 19° /11° | 0 mm | 6 | |
| 20 Sept. | Patchy rain possible | 16° /9° | 3.9 mm | 5 | |
| 21 Sept. | Sunny | 15° /6° | 0 mm | 6 | |
| 22 Sept. | Sunny | 20° /9° | 0 mm | 6 | |
| 23 Sept. | Overcast | 21° /15° | 0 mm | 6 | |
| 24 Sept. | Overcast | 22° /13° | 0 mm | 7 | |
| 25 Sept. | Overcast | 24° /16° | 0 mm | 6 | |
| 26 Sept. | Sunny | 15° /3° | 1.6 mm | 4 | |
| 27 Sept. | Sunny | 17° /4° | 0 mm | 5 | |
| 28 Sept. | Sunny | 18° /7° | 0 mm | 5 | |
| 29 Sept. | Sunny | 19° /6° | 0.3 mm | 5 | |
| 30 Sept. | Sunny | 20° /9° | 0.3 mm | 6 | |
| Next | |||||
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.
Change Month
Chile in September - FAQ
What are the expected maximum and minimum temperatures in Chile during September?
Enjoy moderate daytime temperatures of up to 17° and cooler nights around 6°. Ideal for a range of outdoor activities, from hiking to city tours.
How much rainfall should be expected in Chile during September?
Moderate rainfall is anticipated in Chile during September, with a total of 64.6 mm spread over approximately 6 days. Considering plans for rainy days is advisable.
What are the typical wind conditions in Chile during September?
The average wind speed in Chile during September is 12 km/h, suggesting breezy to windy conditions, depending on your activities.
Chile water temperatures in September
The average water temperature of the Pacific Ocean near Chile in September is 12.9 °C. Temperatures remain fairly consistent throughout the month.
- What is the water temperature in Chile in September?
- The average water temperature in Chile in September is 12.9 °C.
- Can you swim in Chile in September?
- Cold enough that you lose heat fast. A full 4–5 mm wetsuit (plus hood/gloves for comfort) is advisable for anything beyond a brief plunge.
September rainfall patterns in Chile
Explore the daily rainfall trends and prepare for Chiles September weather 💧
Typically, Chile has 6 rainy days in September with a total of 64.6 mm of rainfall.
UV exposure in Chile during September
Stay informed about UV levels for safe outdoor activities throughout the month of September ☀️
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