Lima Weather in September
September in Lima averages 20°C (68°F) during the day and 16°C (61°F) at night. With only 15 mm (0.6 in) of rainfall expected on average, it's a largely dry month.
Rainfall in Lima in September
Analyzing past climate data, one can expect approximately 2 days of rain, averaging 15 mm (0.6 in). On the rare occasion it rains, expect a brief, moderate shower rather than a heavy downpour.
Temperature in Lima in September
Lima in September has perfect weather. Days reach 20°C (68°F) and nights cool to 16°C (61°F). Temperatures can feel cooler in the morning and evening, so layering is often the best approach. With overnight lows of 16°C (61°F), evenings can feel noticeably cooler than the daytime. An extra layer is a good idea, though the cool air makes for a good night's sleep.
Sunshine in Lima in September
This month is characterized by fewer sunny days, with about 39 hours of sunshine. It's great for those who appreciate cooler, less sunny days.
Wind Speed in Lima in September
September has wind speeds averaging 3 m/s (6 knots). You can expect comfortable light winds that steadily move flags and feel mild throughout the day. Since this is an average, daily conditions vary from gentle winds to more active breezes.
Average water temperature in September
The water temperature is 16°C (61°F) — chilly, but perfectly fine for a swim if you're not too sensitive to cold water. A short wetsuit can make longer sessions more comfortable.For additional travel inspiration, our weather planner can help you discover destinations worldwide.
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 Lima's climate page.
Lima Temperature in September
Min Temperature
16°C (61°F)
Max Temperature
20°C (68°F)
Water Temperature
16°C (61°F)
Chance of Rain
5%
Precipitation
15 mm (0.6 in)
Rainy days
2 days
Humidity
85%
Windspeed
3 m/s (6 knots)
Sunshine
39 hours
Percentage Sunshine
Daily Historical Temperatures
50-year average (1976-2025)
Based on our historical records, temperatures in Lima typically stay consistent throughout September, with daily highs averaging around 20°C (68°F). Nights are pleasant, with lows around 16°C (61°F).
Average temperatures in September
Historical weather for Lima in September
Browse day-by-day weather records for Lima spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
Lima historical weather extremes in September
Based on 49 years of weather observations (1976-2025), these are the most extreme conditions recorded in Lima.
- The warmest day in September was on September 17, 2023, with a maximum of 27°C (81°F).
- Lima experienced its chilliest September day on September 29, 2007, reaching only 15°C (59°F).
- The lowest overnight temperature recorded in September was 11°C (52°F) (September 13, 1986).
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
pleasant
tolerable
unpleasant
poor
What to Wear in Lima in September
Comfortable temperatures call for an easy wardrobe in September. Pack summer basics like t-shirts and shorts, but include a light jacket for cooler moments. A pair of comfortable walking shoes is essential. Dry conditions mean you won't need to worry about rain protection. The water temperature sits at about 16°C (61°F), which is too chilly for most people to enjoy swimming. Leave the swimsuit at home unless you love cold water. Sunglasses aren't essential this month, though you might want them for the occasional bright moment.What To Do in Lima 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 Lima's climate page.
Temperature Rainfall Sunshine Humidity Wind Speed Water Temp
See the full Lima climate overview or explore weather in Peru.
