Santa Teresa Weather in September
During September, Santa Teresa experiences very high daytime temperatures of 32°C (90°F) and cooler nights around 23°C (73°F). September sits within the rainy season, so expect regular and often heavy rainfall.
Rainfall in Santa Teresa in September
Santa Teresa is in the rainy season in September, with rain on around 17 days and an average of 201 mm (7.9 in). Rain during the rainy season is significant rather than just light drizzle. Expect proper showers on most rainy days.
Temperature in Santa Teresa in September
September in Santa Teresa sees highs of 32°C (90°F) and lows of 23°C (73°F) overnight. Mornings and evenings are often more comfortable than the peak afternoon hours. With overnight lows of 23°C (73°F), evenings and nights remain warm. Light clothing and an open window or fan can help you sleep comfortably.
Sunshine in Santa Teresa in September
Expect sunny days throughout the month, with an estimated 215 hours of sunshine. Despite being the rainy season, it could still be a nice time to visit. Rain often arrives later in the day, keeping most of the days sunny.If you're looking for dry conditions and comfortable temperatures, September may not be the ideal month to visit Santa Teresa. Our weather planner can help you explore destinations with more pleasant weather conditions.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit Peru, check out our Santa Teresa's climate page.
Santa Teresa Temperature in September
Min Temperature
23°C (73°F)
Max Temperature
32°C (90°F)
Chance of Rain
56%
Precipitation
201 mm (7.9 in)
Rainy days
17 days
Humidity
78% *
Sunshine
215 hours *
Percentage Sunshine
*
Daily Historical Temperatures
50-year average (1976-2025)
Based on our historical records, temperatures in Santa Teresa typically stay consistent throughout September, with daily highs averaging around 32°C (90°F). Nights are warm, with lows around 22°C (72°F).
Average temperatures in September
Daily Historical Precipitation
50-year average (1976-2025)
Average daily rainfall for each day of the month based on long-term records.
Average precipitation in September
Historical weather for Santa Teresa in September
Browse day-by-day weather records for Santa Teresa spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
Santa Teresa historical weather extremes in September
Based on 49 years of weather observations in Santa Teresa between 1976 and 2025, these are the recorded extremes.
- On September 11, 1991, temperatures climbed to 39°C (102°F), marking the warmest September day on record.
- On September 17, 1980, Santa Teresa saw its coldest September day with temperatures maxing out at 19°C (66°F).
- The lowest overnight temperature recorded in September was 15°C (59°F) (September 15, 1990).
Best Places in Peru in September
Find out more about the weather in Peru and which places have the best travel conditions in this month. See all of Peru in September →
perfect weather
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tolerable
unpleasant
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What to Wear in Santa Teresa 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. Don't forget sun protection, sunglasses, sunscreen, and a hat. These are all good ideas with this much sunshine.What To Do in Santa Teresa 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 Peru, check out our Santa Teresa's climate page.
Temperature Rainfall Sunshine Humidity
See the full Santa Teresa climate overview or explore weather in Peru.
