September
Weather in San Salvador for September 2025
Your guide to San Salvador weather in September - trends and predictions
In general, the average temperature in San Salvador at the beginning of September is 28.4 °C. As the month progressed, temperatures tended to moderately fall, reaching an average of 27.1 °C by the end of September.
San Salvador experiences an exceptionally high level of rainfall in September, with more than 24 rainy days on average.
Is September a good time to visit San Salvador? check out the best time to travel to San Salvador page.
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1
Dry days
29
Rainy days
0
Snow days
30°/20°
Temperatures
5 km/h
Avg max wind
85 %
Avg humidity
San Salvador in September average weather
Move between months or click on a day
| Mon. | Tue. | Wed. | Thu. | Fri. | Sat. | Sun. |
|---|---|---|---|---|---|---|
| 1  29° | 2 28° | 3 29° | 4 28° | 5  28° | 6 29° | 7 28° |
| 8 28° | 9 28° | 10 29° | 11 29° | 12  30° | 13  30° | 14 29° |
| 15 28° | 16  29° | 17 30° | 18 29° | 19 30° | 20 28° | 21 27° |
| 22 28° | 23 27° | 24 27° | 25 28° | 26 28° | 27 28° | 28 26° |
| 29 26° | 30 27° |
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Temperatures trend during September in San Salvador
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. | Patchy light rain with thunder | 29° /20° | 31.2 mm | 7 | |
| 2 Sept. | Patchy light rain with thunder | 28° /20° | 34 mm | 6 | |
| 3 Sept. | Patchy light rain with thunder | 29° /20° | 25.1 mm | 6 | |
| 4 Sept. | Patchy light rain with thunder | 28° /20° | 25.8 mm | 6 | |
| 5 Sept. | Moderate or heavy rain shower | 28° /19° | 32 mm | 6 | |
| 6 Sept. | Patchy light rain with thunder | 29° /20° | 12.1 mm | 7 | |
| 7 Sept. | Patchy light rain with thunder | 28° /20° | 5.3 mm | 7 | |
| 8 Sept. | Patchy light rain with thunder | 28° /20° | 13.3 mm | 7 | |
| 9 Sept. | Patchy light rain with thunder | 28° /20° | 18.4 mm | 6 | |
| 10 Sept. | Moderate or heavy rain shower | 29° /20° | 25.6 mm | 7 | |
| 11 Sept. | Moderate or heavy rain shower | 29° /19° | 19.3 mm | 7 | |
| 12 Sept. | Mist | 30° /20° | 2.3 mm | 7 | |
| 13 Sept. | Partly cloudy | 30° /20° | 11.4 mm | 7 | |
| 14 Sept. | Fog | 29° /20° | 11.9 mm | 7 | |
| 15 Sept. | Mist | 28° /20° | 9.3 mm | 6 | |
| 16 Sept. | Patchy rain possible | 29° /20° | 15 mm | 7 | |
| 17 Sept. | Light rain shower | 30° /20° | 9.7 mm | 7 | |
| 18 Sept. | Patchy light rain with thunder | 29° /20° | 12.2 mm | 7 | |
| 19 Sept. | Patchy rain possible | 30° /19° | 8.3 mm | 7 | |
| 20 Sept. | Patchy rain possible | 28° /20° | 25.2 mm | 6 | |
| 21 Sept. | Light rain shower | 27° /20° | 18.6 mm | 6 | |
| 22 Sept. | Patchy light rain with thunder | 28° /19° | 19.5 mm | 7 | |
| 23 Sept. | Patchy light rain with thunder | 27° /19° | 9.9 mm | 6 | |
| 24 Sept. | Patchy light rain with thunder | 27° /20° | 14 mm | 6 | |
| 25 Sept. | Patchy light rain with thunder | 28° /20° | 7.6 mm | 6 | |
| 26 Sept. | Patchy rain possible | 28° /19° | 3.1 mm | 7 | |
| 27 Sept. | Patchy rain possible | 28° /20° | 11.7 mm | 7 | |
| 28 Sept. | Fog | 26° /20° | 9.5 mm | 6 | |
| 29 Sept. | Light rain shower | 26° /19° | 8.2 mm | 6 | |
| 30 Sept. | Patchy light rain with thunder | 27° /20° | 16.8 mm | 6 | |
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Important Notice
Our weather forecast for San Salvador 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 San Salvador forecast closer to your planned date for the most up-to-date weather information.
San Salvador in September - FAQ
What are the expected maximum and minimum temperatures in San Salvador during September?
Expect warm days with temperatures around 30°, cooling to mild conditions of 20° after sunset. Perfect for those who enjoy warm weather.
How much rainfall should be expected in San Salvador during September?
Significant rainfall exceeding 510.8 mm is expected in San Salvador during September, occurring over more than 29 days. Preparing for wet conditions is recommended in your planning.
What are the typical wind conditions in San Salvador during September?
The average wind speed in San Salvador during September is 5 km/h, suggesting breezy to windy conditions, depending on your activities.
What to pack to San Salvador in September?
As you prepare for your trip to San Salvador 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 San Salvador, during September, is comfortable and enjoyable, regardless of the weather conditions.
- Clothing
- Lightweight Clothing: T-shirts, blouses, shorts, skirts
- Rain Gear: Lightweight, waterproof clothing
- Footwear
- Waterproof Shoes
- Sandals/Flip-flops: Comfortable for warm climates
- Accessories
- Sunglasses: For sun protection
- Sun Hats: Wide-brimmed hats for sun protection in warm weather
- Umbrellas/Raincoats: For rainy days
- Personal Items
- Sunscreen: High SPF for sunny destinations
- Lip Balm with SPF: To protect against chapped lips
- Insect Repellent: For destinations with mosquitos or other insects
September rainfall patterns in San Salvador
Explore the daily rainfall trends and prepare for San Salvadors September weather 💧
UV exposure in San Salvador during September
Stay informed about UV levels for safe outdoor activities throughout the month of September ☀️
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