San Carlos Weather in September
San Carlos in September sees very high daytime temperatures of 30°C (86°F) and nighttime lows of 24°C (75°F). As part of the rainy season, showers are frequent and often heavy. Budget around 271 mm (11 in) of rainfall for the month.
Rainfall in San Carlos in September
San Carlos is in the rainy season in September, with rain on around 19 days and an average of 271 mm (11 in). Rain during the rainy season is significant rather than just light drizzle. Expect proper showers on most rainy days.
Temperature in San Carlos in September
Temperatures in San Carlos in September top out at 30°C (86°F) and drop to 24°C (75°F) overnight. Indoor breaks or shaded spots can make the warmer part of the day much more comfortable. With lows around 24°C (75°F), the nights are warm enough that a sheet is usually all you need for bedding.
Sunshine in San Carlos in September
You can expect a moderate amount of sunlight, with approximately 100 hours. Even though this month is part of the wet season, you can still see the sun occasionally.Our weather planner can help you find worldwide destinations with pleasant weather during this period. January, February and March typically offer the best weather for San Carlos.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit Panama, check out our San Carlos's climate page.
San Carlos Temperature in September
Min Temperature
24°C (75°F)
Max Temperature
30°C (86°F)
Chance of Rain
62%
Precipitation
271 mm (11 in)
Rainy days
19 days
Sunshine
100 hours *
Percentage Sunshine
*
Daily Historical Temperatures
47-year average (1976-2025)
Based on our historical records, temperatures in San Carlos typically stay consistent throughout September, with daily highs averaging around 30°C (86°F). Nights are warm, with lows around 24°C (75°F).
Average temperatures in September
Historical weather for San Carlos in September
Browse day-by-day weather records for San Carlos spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
San Carlos historical weather extremes in September
Based on 19 years of weather observations in San Carlos between 2006 and 2025, these are the recorded extremes.
- On September 7, 2009, temperatures climbed to 34°C (93°F), marking the warmest September day on record.
- San Carlos experienced its chilliest September day on September 30, 2019, reaching only 26°C (79°F).
- The coldest night in September in San Carlos was on September 11, 2022, with a minimum of 11°C (52°F).
- The wettest day in September San Carlos was on September 30, 2022 with 35 mm (1.4 in) of precipitation.
Best Places in Panama in September
Find out more about the weather in Panama and which places have the best travel conditions in this month. See all of Panama in September →
perfect weather
pleasant
tolerable
unpleasant
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What to Wear in San Carlos 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. Sunglasses could come in handy during the sunnier parts of your trip.What To Do in San Carlos 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 Panama, check out our San Carlos's climate page.
See the full San Carlos climate overview or explore weather in Panama.
