Concepción Weather in September

In Concepción, September brings very high daytime temperatures around 31°C (88°F), with nights cooling to 18°C (64°F). Expect quite a bit of rainfall this month.

Rainfall in Concepción in September

Typically, about 7 days will experience rainfall, with an average of 108 mm (4.3 in) for the month. The rain this month typically falls in concentrated bursts rather than all-day showers. Expect a few heavier spells rather than constant grey skies.

Temperature in Concepción in September

Temperatures in Concepción in September top out at 31°C (88°F) and drop to 18°C (64°F) overnight. Mornings and evenings are often more comfortable than the peak afternoon hours. Nights drop to around 18°C (64°F), which is noticeably cooler than the daytime. A light jacket for the evening is a sensible addition, and the cool nights tend to make sleeping comfortable.

Sunshine in Concepción in September

The area enjoys a moderate level of sunlight, with around 175 hours. It's a good balance between sunny and cloudy days.

Wind Speed in Concepción in September

Wind speeds average 4 m/s (8 knots) during September. At this speed, expect moderate winds that can raise dust and move small branches. Since this is an average, some days have gentle light winds while others experience stronger breezes that are quite noticeable.

Average water temperature in September

The water temperature is only 12°C (54°F) this month — cold enough that most people will want to stay out. Hardy swimmers may manage a quick dip, but it won't be comfortable.

If your ideal day consists of dry skies and pleasant temperatures, June, July and August typically offer the best circumstances for Concepción.

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For a detailed overview over the year and the best time to visit Paraguay, check out our Concepción's climate page.

Concepción Temperature in September

Min Temperature 18°C (64°F)  

Max Temperature 31°C (88°F)  

Water Temperature 12°C (54°F)  

Chance of Rain 23%  

Precipitation 108 mm (4.3 in)  

Rainy days 7 days  

Humidity 68%  

Windspeed 4 m/s (8 knots)  

Sunshine 175 hours  

Percentage Sunshine  

Daily Historical Temperatures

47-year average (1976-2025)

Based on our historical records, temperatures in Concepción typically stay consistent throughout September, with daily highs averaging around 31°C (88°F). Nights are pleasant, with lows typically ranging from 16°C (61°F) to 19°C (66°F).

Average temperatures in September

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Daily Historical Precipitation

47-year average (1976-2025)

Average daily rainfall for each day of the month based on long-term records.

Average precipitation in September

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Historical weather for Concepción in September

Browse day-by-day weather records for Concepción spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.

Historical weather Temperatures Precipitation

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‹ January February March April May June July August September October November December ›

Concepción historical weather extremes in September

The extremes listed below come from historical weather data collected in Concepción from 2006 through 2025.

• Concepción recorded its highest September temperature of 42°C (108°F) on September 20, 2021.
• Nighttime temperatures dropped to 2°C (36°F) on September 6, 2006, marking the coldest September night on record.

What to Wear in Concepción in September

Warm temperatures in September make for comfortable sightseeing weather. Pack breathable fabrics like cotton shirts, knee-length shorts or skirts, and comfortable walking shoes. A thin long sleeve for indoor spaces is handy. Prepare for significant rainfall with proper waterproof clothing and shoes. With water temperatures around 12°C (54°F), the water is quite cold for swimming. You can skip the swimwear unless you're particularly tough. It won't hurt to bring your sunglasses along, as you'll see some sunny periods.

What To Do in Concepción in September

We rated the following activities from 1 (least suitable) to 10 (best) to do.

Swimming

7/10

Cycling

7/10

Walking

7/10

Camping

6/10

Outdoor sports

7/10

Select a Month

Check the conditions for any month of the year.

• January
• February
• March
• April

• May
• June
• July
• August

• September
• October
• November
• December

For a detailed overview over the year and the best time to visit Paraguay, check out our Concepción's climate page.

More climate data for Concepción

Temperature Rainfall Sunshine Humidity Wind Speed Water Temp

See the full Concepción climate overview or explore weather in Paraguay.