Monthly climate guide
San Miguel weather in September
Expect hot weather in San Miguel in September: afternoons reach about 30°C (86°F), while nights drop to around 24°C (74°F). Around 239 mm of rain falls over the month (very wet), and skies are often cloudy. Daytime highs are 2°C cooler than August and about the same as October.
What stands out in September
- Humidity near 81% makes 30°C feel stickier than it sounds.
- Rain is above San Miguel's usual level, by about 124%.
- Only one month is cooler in San Miguel than September.
- This is rainy-season territory in San Miguel: short, heavy downpours are typical.
Avg high
30°C
86°F
Avg low
24°C
74°F
Rainfall
239 mm
very wet
Humidity
81%
relative
Sky
77%
cloud · often cloudy
San Miguel weather by month
Show the monthly averages as a table
| Month | Avg high | Avg low | Rain | Humidity | Cloud cover |
|---|---|---|---|---|---|
| January | 33°C / 92°F | 22°C / 71°F | 3 mm | 58% | 25% |
| February | 35°C / 95°F | 23°C / 73°F | 3 mm | 53% | 26% |
| March | 36°C / 96°F | 24°C / 74°F | 8 mm | 51% | 29% |
| April | 35°C / 95°F | 25°C / 77°F | 44 mm | 59% | 50% |
| May | 32°C / 90°F | 25°C / 76°F | 183 mm | 72% | 73% |
| June | 30°C / 87°F | 24°C / 75°F | 187 mm | 78% | 77% |
| July | 32°C / 90°F | 24°C / 75°F | 118 mm | 70% | 64% |
| August | 32°C / 89°F | 24°C / 75°F | 187 mm | 74% | 68% |
| September | 30°C / 86°F | 24°C / 74°F | 239 mm | 81% | 77% |
| October | 29°C / 84°F | 23°C / 73°F | 247 mm | 82% | 71% |
| November | 30°C / 86°F | 22°C / 71°F | 51 mm | 76% | 42% |
| December | 32°C / 89°F | 21°C / 70°F | 11 mm | 67% | 26% |
What to pack for September
- Light, breathable clothing (cotton or linen)
- A sun hat and high-SPF sunscreen
- A refillable water bottle
- A compact umbrella or packable rain jacket
- Water-resistant shoes
- Quick-dry fabrics — it feels stickier than the temperature suggests
Is September a good time to visit San Miguel?
Compare the months in the chart above to find your ideal window.
Best time to visit San Miguel →Other El Salvador cities in September
Cite or embed this data
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San Miguel weather in September. WeatherCompare, 2026 (NASA POWER / ERA5, 2011–2020 monthly averages). https://weathercompare.eu/weather/el-salvador/san-miguel/september
<a href="https://weathercompare.eu/weather/el-salvador/san-miguel/september">San Miguel weather in September</a> (WeatherCompare)
<iframe src="https://weathercompare.eu/embed/el-salvador/san-miguel" width="300" height="160" style="border:0;border-radius:12px" loading="lazy" title="San Miguel weather in September"></iframe> <p style="font-size:12px"><a href="https://weathercompare.eu/weather/el-salvador/san-miguel/september">San Miguel weather in September</a> – WeatherCompare</p>
San Miguel in September: quick answers
Is September a good time to visit San Miguel?
September is one of the wetter months in San Miguel, with about 239 mm of rain. You can still go: pack a rain jacket and keep plans flexible.
How warm is San Miguel in September?
Average highs are about 30°C (86°F) and average lows about 24°C (74°F), based on 10 years of daily data.
Does it rain a lot in San Miguel in September?
San Miguel typically gets around 239 mm of rain in September — very wet.
Figures are long-term averages for the area around San Miguel (NASA POWER / ERA5, 2011–2020), not a forecast for a specific year. For upcoming days, see the live multi-source forecast.