Climate averages 1991–2020
Lima weather
in September.
A mild, very dry month: the 10th warmest and the 4th driest of the year. Meets the pleasant-weather rule
Long-term climate patterns, not a forecast for a particular trip.
September is a mild month in Lima: daytime highs average 21.2°C and nights cool to about 15.6°C. By daytime temperature it is the 10th warmest of the 12 months.
Expect about 1.6 mm of rain on fewer than one day, which makes September a very dry month (the 4th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 12 h 01 min on an average September day.
The nearest other city in this atlas is Santa Anita - Los Ficus (6 km away). In September its highs average 19.0°C, 2.2°C cooler than Lima, with 1.6 mm of rain.
Among the 24 cities listed in Peru, Lima ranks 15th of 24 for the warmest September highs and joint 7th of 24 for the driest September (rainfall, lowest first). The mean September high of those 24 cities is 23.3°C; Lima is 2.1°C cooler than that mean.
From September to October, average highs rise by 0.7°C to 21.8°C, and monthly rainfall rises from 1.6 mm to 2.5 mm.
The annual picture
September in context
Monthly rainfall
Average total · mmAverages from hourly ERA5 reanalysis data. Actual weather varies from year to year. How these numbers are calculated
Every month, side by side
Lima climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 25.6°C20.1°C | 20.1°C | 19 | 5.7 | 12.713 h |
| February | 26.2°C21.0°C | 21.0°C | 31 | 8.9 | 12.512 h |
| March | 26.2°C20.9°C | 20.9°C | 24 | 7.6 | 12.212 h |
| April | 24.9°C19.4°C | 19.4°C | 7.2 | 2.6 | 11.812 h |
| May | 23.0°C17.7°C | 17.7°C | 1.8 | 0.4 | 11.612 h |
| June | 21.5°C16.2°C | 16.2°C | 1.1 | 0.0 | 11.411 h |
| July | 20.7°C15.4°C | 15.4°C | 1.0 | 0.1 | 11.511 h |
| August | 20.7°C15.2°C | 15.2°C | 0.9 | 0.0 | 11.712 h |
| September, selected | 21.2°C15.6°C | 15.6°C | 1.6 | 0.3 | 12.012 h |
| October | 21.8°C16.1°C | 16.1°C | 2.5 | 0.6 | 12.412 h |
| November | 22.8°C17.0°C | 17.0°C | 2.5 | 0.7 | 12.713 h |
| December | 24.2°C18.5°C | 18.5°C | 6.2 | 1.7 | 12.813 h |
Rainfall is the average of the 30 separate monthly totals. A rain day is a local calendar day with at least 1 mm of precipitation. Daylight is the calculated sunrise-to-sunset length, not measured sunshine.
Compare places
September in nearby cities
- Santa Anita - Los Ficus in SeptemberPeru · 6 kmHigh 19.0°C · Low 14.2°C · 1.6 mm rain
- Callao in SeptemberPeru · 12 kmHigh 20.1°C · Low 15.3°C · 3.7 mm rain
- Chosica in SeptemberPeru · 36 kmHigh 23.9°C · Low 17.7°C · 4.0 mm rain
- Chincha Alta in SeptemberPeru · 180 kmHigh 22.9°C · Low 16.0°C · 0.1 mm rain
- Huancayo in SeptemberPeru · 198 kmHigh 13.8°C · Low 4.3°C · 90 mm rain
- Huánuco (approximate) in SeptemberPeru · 250 kmHigh 23.6°C · Low 15.0°C · 35 mm rain
- Ica in SeptemberPeru · 266 kmHigh 26.6°C · Low 16.1°C · 0.1 mm rain
- Chimbote in SeptemberPeru · 372 kmHigh 20.0°C · Low 15.3°C · 1.4 mm rain
Read the numbers correctly
Climate, not a promise.
These patterns help compare months. They cannot tell you the weather on a specific day of your trip.
Sources, method and limitsHow these numbers are made (what the highs, lows and rain days mean, the sources and the model cell used for Lima) is explained once on the Lima year overview and on the Sources, method and limits page.
Santa Anita - Los Ficus lies in the same rainfall cell, so its rainfall figures are identical to these; temperatures differ because they come from smaller 0.1° cells.