Climate averages 1991–2020
Ica weather
in September.
A warm, very dry month: the 9th warmest and one of the driest of the year. Meets the pleasant-weather rule
Long-term climate patterns, not a forecast for a particular trip.
September is a warm month in Ica: daytime highs average 26.6°C and nights cool to about 16.1°C. By daytime temperature it is the 9th warmest of the 12 months.
Rain is very rare: less than 1 mm falls in a typical September (one of the driest months of the year). Daylight, from sunrise to sunset, lasts about 12 h 01 min on an average September day.
The nearest other city in this atlas is Chincha Alta (86 km away). In September its highs average 22.9°C, 3.8°C cooler than Ica, with almost no rain (under 1 mm).
Among the 24 cities listed in Peru, Ica ranks 8th of 24 for the warmest September highs and joint 1st of 24 for the driest September (rainfall, lowest first). The mean September high of those 24 cities is 23.3°C; Ica is 3.3°C warmer than that mean.
From September to October, average highs rise by 0.8°C to 27.4°C, and monthly rainfall rises from under 1 mm to 1.2 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
Ica climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 29.1°C20.3°C | 20.3°C | 24 | 5.7 | 12.913 h |
| February | 29.2°C21.1°C | 21.1°C | 31 | 9.0 | 12.613 h |
| March | 29.6°C21.1°C | 21.1°C | 21 | 6.8 | 12.212 h |
| April | 28.9°C19.8°C | 19.8°C | 3.5 | 0.9 | 11.812 h |
| May | 27.2°C18.0°C | 18.0°C | 0.2 | 0.0 | 11.511 h |
| June | 25.4°C16.4°C | 16.4°C | 0.1 | 0.0 | 11.311 h |
| July | 24.9°C15.7°C | 15.7°C | 0.1 | 0.0 | 11.411 h |
| August | 25.5°C15.6°C | 15.6°C | 0.1 | 0.0 | 11.612 h |
| September, selected | 26.6°C16.1°C | 16.1°C | 0.1 | 0.0 | 12.012 h |
| October | 27.4°C16.7°C | 16.7°C | 1.2 | 0.4 | 12.412 h |
| November | 27.9°C17.5°C | 17.5°C | 1.3 | 0.4 | 12.813 h |
| December | 28.8°C19.0°C | 19.0°C | 4.7 | 1.7 | 12.913 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
- Chincha Alta in SeptemberPeru · 86 kmHigh 22.9°C · Low 16.0°C · 0.1 mm rain
- Huancayo in SeptemberPeru · 230 kmHigh 13.8°C · Low 4.3°C · 90 mm rain
- Chosica in SeptemberPeru · 260 kmHigh 23.9°C · Low 17.7°C · 4.0 mm rain
- Santa Anita - Los Ficus in SeptemberPeru · 262 kmHigh 19.0°C · Low 14.2°C · 1.6 mm rain
- Lima in SeptemberPeru · 266 kmHigh 21.2°C · Low 15.6°C · 1.6 mm rain
- Callao in SeptemberPeru · 271 kmHigh 20.1°C · Low 15.3°C · 3.7 mm rain
- Abancay in SeptemberPeru · 312 kmHigh 21.0°C · Low 10.7°C · 41 mm rain
- Cusco in SeptemberPeru · 411 kmHigh 16.2°C · Low 6.6°C · 37 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 Ica) is explained once on the Ica year overview and on the Sources, method and limits page.