Chile (Santiago)
September
Weather in Chile for September 2025
Your guide to Chile weather in September - trends and predictions
So far, September 2025 in Chile is slightly warmer than the historical average by 1 °C.
The forecast for the coming days of September 2025 predicts a temperature of 22.4 °C , which is warmer than usual.
In general, the average temperature in Chile at the beginning of September is 15.9 °C. As the month progressed, temperatures tended to significantly warm up, reaching an average of 23.6 °C by the end of September.
Chile experiences moderate rainfall in September, with an average of 10 rainy days and a total precipitation of 85.9 mm.
Temperatures
Rain 🌧️
20
Dry days
10
Rainy days
0
Snow days
16°/6°
Temperatures
11 km/h
Avg max wind
57 %
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. |  Light rain shower | 17° /6° | 0.6 mm | 5 | |
| 2 Sept. | Light rain shower | 14° /3° | 5.6 mm | 4 | |
| 3 Sept. |  Light rain | 14° /5° | 1.1 mm | 4 | |
| 4 Sept. |  Sunny | 18° /6° | 1.7 mm | 5 | |
| 5 Sept. |  Overcast | 18° /7° | 0.1 mm | 5 | |
| 6 Sept. | Sunny | 16° /5° | 18.4 mm | 5 | |
| 7 Sept. |  Moderate rain at times | 14° /3° | 1.5 mm | 4 | |
| 8 Sept. | Patchy rain possible | 15° /5° | 0.4 mm | 4 | |
| 9 Sept. | Light rain shower | 18° /7° | 0.4 mm | 5 | |
| 10 Sept. | Patchy rain possible | 16° /6° | 1.5 mm | 5 | |
| 11 Sept. | Sunny | 17° /6° | 19.3 mm | 5 | |
| 12 Sept. |  Thundery outbreaks possible | 16° /4° | 0.2 mm | 5 | |
| 13 Sept. | Overcast | 15° /5° | 0.2 mm | 5 | |
| 14 Sept. |  Partly cloudy | 18° /8° | 0 mm | 6 | |
| 15 Sept. | Sunny | 21° /10° | 0 mm | 6 | |
| 16 Sept. | Partly cloudy | 21° /10° | 0 mm | 6 | |
| 17 Sept. | Sunny | 22° /9° | 0 mm | 1.6 | |
| 18 Sept. | Sunny | 23° /9° | 0 mm | 1.8 | |
| 19 Sept. | Patchy rain possible | 20° /8° | 0.1 mm | 1.8 | |
| 20 Sept. | Patchy rain possible | 18° /8° | 3.3 mm | 1.5 | |
| 21 Sept. | Patchy rain possible | 16° /7° | 1.4 mm | 0 | |
| 22 Sept. | Sunny | 24° /6° | 0 mm | 5 | |
| 23 Sept. | Sunny | 26° /9° | 0 mm | 6 | |
| 24 Sept. | Sunny | 29° /12° | 0 mm | 6 | |
| 25 Sept. | Sunny | 19° /10° | 0 mm | 5 | |
| 26 Sept. | Sunny | 24° /7° | 0 mm | 6 | |
| 27 Sept. |  Cloudy | 18° /10° | 0 mm | 4 | |
| 28 Sept. | Patchy rain possible | 22° /9° | 0.2 mm | 5 | |
| 29 Sept. | Sunny | 25° /8° | 0 mm | 6 | |
| 30 Sept. | Sunny | 28° /10° | 0 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 16° 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 85.9 mm spread over approximately 10 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 11 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 11.3 °C. At the beginning of September temperatures are around 11.3 °C; by the end of the month they get a bit cooler and reach 10.7 °C.
- What is the water temperature in Chile in September?
- The average water temperature in Chile in September is 11.3 °C.
- Can you swim in Chile in September?
- Dangerously cold water: hypothermia risk is high. Only experienced cold-water swimmers with proper gear should consider entering.
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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