Santiago (Santiago de los Caballeros)
September
Weather in Santiago for September 2025
Your guide to Santiago weather in September - trends and predictions
In general, the average temperature in Santiago at the beginning of September is 33.9 °C. As the month progressed, temperatures tended to moderately rise, reaching an average of 34.7 °C by the end of September.
Santiago in September brings notable rainfall, with an average of 20 rainy days and a total precipitation of 146.3 mm.
Temperatures
Rain 🌧️
10
Dry days
20
Rainy days
0
Snow days
34°/21°
Temperatures
17 km/h
Avg max wind
74 %
Avg humidity
Santiago in September average weather
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| Mon. | Tue. | Wed. | Thu. | Fri. | Sat. | Sun. |
|---|---|---|---|---|---|---|
| 1  35° | 2  34° | 3 34° | 4 33° | 5 33° | 6  33° | 7  35° |
| 8 34° | 9 34° | 10 34° | 11 33° | 12 33° | 13 35° | 14  34° |
| 15  34° | 16 35° | 17 35° | 18 33° | 19 35° | 20 35° | 21 34° |
| 22 34° | 23 33° | 24 37° | 25 37° | 26 34° | 27 33° | 28 35° |
| 29  33° | 30 34° |
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Temperatures trend during September in Santiago
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. | Thundery outbreaks possible | 35° /21° | 0.4 mm | 8 | |
| 2 Sept. | Patchy rain possible | 34° /21° | 0.8 mm | 7 | |
| 3 Sept. | Light rain shower | 34° /21° | 2.5 mm | 8 | |
| 4 Sept. | Light rain shower | 33° /20° | 3.5 mm | 7 | |
| 5 Sept. | Patchy rain possible | 33° /19° | 1.2 mm | 7 | |
| 6 Sept. | Mist | 33° /20° | 0.7 mm | 7 | |
| 7 Sept. | Cloudy | 35° /19° | 0.2 mm | 8 | |
| 8 Sept. | Patchy rain possible | 34° /20° | 2.4 mm | 7 | |
| 9 Sept. | Patchy rain possible | 34° /21° | 3 mm | 8 | |
| 10 Sept. | Thundery outbreaks possible | 34° /21° | 1.7 mm | 8 | |
| 11 Sept. | Patchy rain possible | 33° /20° | 2 mm | 7 | |
| 12 Sept. | Mist | 33° /20° | 6.6 mm | 7 | |
| 13 Sept. | Cloudy | 35° /21° | 9.4 mm | 8 | |
| 14 Sept. | Moderate or heavy rain shower | 34° /21° | 8.8 mm | 8 | |
| 15 Sept. | Moderate or heavy rain with thunder | 34° /21° | 17 mm | 8 | |
| 16 Sept. | Patchy rain possible | 35° /20° | 2.8 mm | 8 | |
| 17 Sept. | Patchy rain possible | 35° /21° | 0.6 mm | 8 | |
| 18 Sept. | Mist | 33° /21° | 0 mm | 7 | |
| 19 Sept. | Mist | 35° /22° | 0 mm | 8 | |
| 20 Sept. | Fog | 35° /20° | 1.4 mm | 8 | |
| 21 Sept. | Moderate or heavy rain shower | 34° /21° | 2.9 mm | 7 | |
| 22 Sept. | Thundery outbreaks possible | 34° /20° | 63.1 mm | 8 | |
| 23 Sept. | Thundery outbreaks possible | 33° /21° | 5 mm | 7 | |
| 24 Sept. | Thundery outbreaks possible | 37° /21° | 0 mm | 8 | |
| 25 Sept. | Thundery outbreaks possible | 37° /20° | 3.2 mm | 9 | |
| 26 Sept. | Fog | 34° /22° | 0 mm | 8 | |
| 27 Sept. | Patchy rain possible | 33° /22° | 0.1 mm | 8 | |
| 28 Sept. | Patchy rain possible | 35° /21° | 2.6 mm | 8 | |
| 29 Sept. | Patchy light drizzle | 33° /22° | 2.7 mm | 7 | |
| 30 Sept. | Patchy rain possible | 34° /22° | 1.4 mm | 7 | |
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Important Notice
Our weather forecast for Santiago 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 Santiago forecast closer to your planned date for the most up-to-date weather information.
Santiago in September - FAQ
What are the expected maximum and minimum temperatures in Santiago during September?
During September, expect a variety of temperatures with highs around 34° and lows near 21°, suitable for diverse activities and preferences.
How much rainfall should be expected in Santiago during September?
Significant rainfall exceeding 146.3 mm is expected in Santiago during September, occurring over more than 20 days. Preparing for wet conditions is recommended in your planning.
What are the typical wind conditions in Santiago during September?
The average wind speed in Santiago during September is 17 km/h, suggesting breezy to windy conditions, depending on your activities.
September rainfall patterns in Santiago
Explore the daily rainfall trends and prepare for Santiagos September weather 💧
UV exposure in Santiago during September
Stay informed about UV levels for safe outdoor activities throughout the month of September ☀️
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