Climate averages 1991–2020
Callao weather
in August.
A mild, very dry month: one of the coolest and the joint 7th driest of the year. Meets the pleasant-weather rule
Long-term climate patterns, not a forecast for a particular trip.
August is a mild month in Callao: daytime highs average 19.6°C and nights cool to about 15.0°C. By daytime temperature it is one of the coolest months of the year.
Expect about 4.9 mm of rain on roughly 1 day, which makes August a very dry month (the joint 7th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 11 h 43 min on an average August day.
The nearest other city in this atlas is Lima (12 km away). In August its highs average 20.7°C, 1.2°C warmer than Callao, with almost no rain (under 1 mm).
Among the 24 cities listed in Peru, Callao ranks 18th of 24 for the warmest August highs and 14th of 24 for the driest August (rainfall, lowest first). The mean August high of those 24 cities is 22.8°C; Callao is 3.2°C cooler than that mean.
From August to September, average highs rise by 0.5°C to 20.1°C, and monthly rainfall falls from 4.9 mm to 3.7 mm.
The annual picture
August 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
Callao climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 25.6°C20.3°C | 20.3°C | 5.2 | 1.5 | 12.713 h |
| February | 26.6°C21.4°C | 21.4°C | 7.8 | 2.0 | 12.512 h |
| March | 26.5°C21.2°C | 21.2°C | 5.9 | 1.7 | 12.212 h |
| April | 24.7°C19.5°C | 19.5°C | 1.6 | 0.2 | 11.812 h |
| May | 22.3°C17.6°C | 17.6°C | 2.3 | 0.2 | 11.612 h |
| June | 20.5°C16.2°C | 16.2°C | 4.9 | 1.1 | 11.411 h |
| July | 19.6°C15.4°C | 15.4°C | 5.3 | 1.2 | 11.511 h |
| August, selected | 19.6°C15.0°C | 15.0°C | 4.9 | 1.2 | 11.712 h |
| September | 20.1°C15.3°C | 15.3°C | 3.7 | 0.5 | 12.012 h |
| October | 20.9°C15.8°C | 15.8°C | 2.8 | 0.3 | 12.412 h |
| November | 22.0°C16.8°C | 16.8°C | 2.2 | 0.1 | 12.713 h |
| December | 23.7°C18.5°C | 18.5°C | 2.7 | 0.6 | 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
August in nearby cities
- Lima in AugustPeru · 12 kmHigh 20.7°C · Low 15.2°C · 0.9 mm rain
- Santa Anita - Los Ficus in AugustPeru · 18 kmHigh 18.6°C · Low 13.8°C · 0.9 mm rain
- Chosica in AugustPeru · 48 kmHigh 23.9°C · Low 17.7°C · 0.6 mm rain
- Chincha Alta in AugustPeru · 186 kmHigh 22.4°C · Low 15.9°C · 0.1 mm rain
- Huancayo in AugustPeru · 209 kmHigh 13.7°C · Low 3.3°C · 44 mm rain
- Huánuco (approximate) in AugustPeru · 255 kmHigh 23.1°C · Low 14.0°C · 23 mm rain
- Ica in AugustPeru · 271 kmHigh 25.5°C · Low 15.6°C · 0.1 mm rain
- Chimbote in AugustPeru · 367 kmHigh 19.8°C · Low 15.3°C · 1.1 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 Callao) is explained once on the Callao year overview and on the Sources, method and limits page.