Barra de Santiago Weather in September
Barra de Santiago in September averages 29°C (84°F) during the day and 25°C (77°F) at night. This is the wettest month of the year.
Rainfall in Barra de Santiago in September
As part of the rainy season, Barra de Santiago sees around 26 days of rain in September, with an average of 342 mm (13 in). The rainy season here brings regular, substantial showers. It's worth being prepared for rain on most days you're out.
Temperature in Barra de Santiago in September
Barra de Santiago in September gets highs of 29°C (84°F) during the day and drops to 25°C (77°F) at night. This gives the month a fairly typical daily rhythm, with warmer afternoons and more comfortable nights. At 25°C (77°F) overnight, it stays warm after dark. Light, breathable clothing and good airflow in your room make a noticeable difference.
Sunshine in Barra de Santiago in September
The days are predominantly sunny, with an estimated total of around 209 hours of sunshine. Rain is often only seen in the afternoon or evening, leaving clear skies for most of the day. This results in rainy months that still feel bright and are suitable for travel.
Average water temperature in September
The water is 29°C (84°F) — very warm by most standards. Comfortable to swim in, but not particularly refreshing if you're looking to cool off.September in Barra de Santiago has its charm, but if you're looking for destinations with pleasant temperatures and sunny skies, our weather planner can help you explore other options in the world.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit El Salvador, check out our Barra de Santiago's climate page.
Barra de Santiago Temperature in September
Min Temperature
25°C (77°F)
Max Temperature
29°C (84°F)
Water Temperature
29°C (84°F) *
Chance of Rain
87%
Precipitation
342 mm (13 in)
Rainy days
26 days
Humidity
83% *
Sunshine
209 hours *
Percentage Sunshine
*
Historical weather for Barra de Santiago in September
Browse day-by-day weather records for Barra de Santiago spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
Barra de Santiago historical weather extremes in September
Based on weather observations in Barra de Santiago between 2005 and 2025, these are the recorded extremes during September.
- The warmest day in September was on September 10, 2023, with a maximum of 36°C (97°F).
- Barra de Santiago experienced its chilliest September day on September 3, 2010, reaching only 24°C (75°F).
- The coldest night in September in Barra de Santiago was on September 18, 2019, with a minimum of 10°C (50°F).
Best Places in El Salvador in September
Find out more about the weather in El Salvador and which places have the best travel conditions in this month. See all of El Salvador in September →
perfect weather
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What to Wear in Barra de Santiago in September
Warm weather calls for comfortable, breathable clothing in September. Cotton t-shirts, shorts, light dresses, and sandals are perfect. You might still want a light layer for evenings or air-conditioned places (for example buses). Also bring a poncho, it will rain a lot! Waterproof everything you can. With water temperatures around 29°C (84°F), swimming conditions are excellent. Pack your swimsuit, goggles, and maybe some water shoes. You'll definitely want to pack sunglasses and sunscreen. There will be plenty of bright sunshine this month.What To Do in Barra de Santiago in September
We rated the following activities from 1 (least suitable) to 10 (best) to do.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit El Salvador, check out our Barra de Santiago's climate page.
Temperature Rainfall Sunshine Humidity Water Temp
See the full Barra de Santiago climate overview or explore weather in El Salvador.
