Lima Weather in September
Peru · Desert climate · Data averaged from 2020-01-01 to 2024-12-31 (5 years)
September in Lima sees average temperatures ranging from a low of 14.1°C (57.4°F) to a high of 18.5°C (65.3°F), with a mean of 16.1°C (61.0°F). Compared to the annual average of 18.8°C (65.8°F), this month is 2.7°C cooler than the yearly norm. Precipitation averages 1.2mm, making it approximately 3.0mm drier than the monthly average of 4.0mm. The city receives an average of 10.2 hours of sunshine per day during September, with relative humidity averaging 82.9%. Wind speeds reach an average maximum of 21.7 km/h. For travelers, this month offers a temperature experience in Lima, with drier-than-average conditions compared to the rest of the year.
There's something about Lima in winter that the postcards never show. May-November brings la garúa — a persistent grey mist that hangs over the city for months. I arrived expecting sunshine and got six straight weeks of 16°C gloom. But locals embrace it; ceviche tastes better when it's cool, and the city's literary cafés feel alive. December-April is when the sun finally returns: 25°C, clear skies, Lima erupts onto the beaches. The Mistura food festival in September is when Lima's culinary soul is on full display. Every season here is a mood.
September vs Adjacent Months
| Metric | August | September | October |
|---|---|---|---|
| Mean Temp | 16.0°C (60.8°F) | 16.1°C (61.0°F) | 16.7°C (62.1°F) |
| Rainfall | 0.6mm | 1.2mm | 0.7mm |
| Sunshine | 9.7 hrs | 10.2 hrs | 10.4 hrs |
| Humidity | 83.0% | 82.9% | 83.7% |
| Wind | 21.5 km/h | 21.7 km/h | 22.1 km/h |
| Rainy Days | 1.0 | 2.6 | 1.6 |
Seasonal Context
September falls in Autumn in the Northern Hemisphere. Autumn sees temperatures gradually cooling from summer highs. For travelers visiting Lima in September, the data indicates favorable conditions based on the combination of temperature, precipitation, and daylight hours.
Frequently Asked Questions
What is the average temperature in Lima in September?
The average temperature in Lima during September ranges from 14.1°C (57.4°F) to 18.5°C (65.3°F), with a mean of 16.1°C (61.0°F).
How much does it rain in Lima in September?
Lima receives an average of 1.2mm of precipitation in September, spread across approximately 2.6 rainy days.
What should I pack for Lima in September?
Based on September weather data, pack layers including light jackets and t-shirts, plus an umbrella.
Is September a good time to visit Lima?
September is a good time to visit Lima, with comfortable temperatures and manageable rainfall.
Other Months for Lima
Data Source: Open-Meteo historical archive (2020-01-01 to 2024-12-31). Daily measurements aggregated into monthly climate normals. Coordinates: -12.05°, -77.04°. Timezone: America/Lima. Last updated: 2026-07-30.