Callao, Peru climate
BWh Hot desert
Callao has a mildly seasonal warm-temperate climate (Hot desert, Köppen BWh). The hottest month is February with an average daily high near 28°C, while the coldest is August averaging around 15°C at night. Precipitation totals about 26 mm a year and is strongly seasonal — January alone averages 11 mm while April barely receives 0 mm.
Temperature & precipitation
Daily high–low temperature range with the monthly average, plus monthly precipitation · 1991–2020 normals · hover a month for the exact figuresHours of sunshine per day
Estimated sunny hours each month — daylight length × clear-sky fraction · 1991–2020 monthly cloud cover (NASA POWER)Callao climate normals (1991–2020)
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high (°C) | 27 | 28 | 27 | 25 | 23 | 20 | 20 | 19 | 20 | 21 | 22 | 24 |
| Avg temp (°C) | 23 | 24 | 24 | 22 | 20 | 18 | 18 | 17 | 18 | 18 | 20 | 22 |
| Avg low (°C) | 20 | 21 | 20 | 19 | 17 | 16 | 16 | 15 | 15 | 16 | 17 | 19 |
| Precipitation (mm) | 11 | 1 | 5 | 0 | 0 | 1 | 1 | 1 | 2 | 1 | 2 | 1 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Avg high (°C) | 27 | 28 | 27 | 25 | 23 | 20 |
| Avg temp (°C) | 23 | 24 | 24 | 22 | 20 | 18 |
| Avg low (°C) | 20 | 21 | 20 | 19 | 17 | 16 |
| Precipitation (mm) | 11 | 1 | 5 | 0 | 0 | 1 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Avg high (°C) | 20 | 19 | 20 | 21 | 22 | 24 |
| Avg temp (°C) | 18 | 17 | 18 | 18 | 20 | 22 |
| Avg low (°C) | 16 | 15 | 15 | 16 | 17 | 19 |
| Precipitation (mm) | 1 | 1 | 2 | 1 | 2 | 1 |
Sky & atmosphere
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Cloud cover (%) | 63 | 62 | 55 | 42 | 55 | 78 | 85 | 87 | 85 | 78 | 74 | 70 |
| Relative humidity (%) | 76 | 76 | 75 | 71 | 68 | 66 | 65 | 62 | 62 | 64 | 67 | 72 |
| Wind speed (km/h) | 9.3 | 8.7 | 8.4 | 8.5 | 8.7 | 9.1 | 9.6 | 9.9 | 10.1 | 10.0 | 9.9 | 9.6 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Cloud cover (%) | 63 | 62 | 55 | 42 | 55 | 78 |
| Relative humidity (%) | 76 | 76 | 75 | 71 | 68 | 66 |
| Wind speed (km/h) | 9.3 | 8.7 | 8.4 | 8.5 | 8.7 | 9.1 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Cloud cover (%) | 85 | 87 | 85 | 78 | 74 | 70 |
| Relative humidity (%) | 65 | 62 | 62 | 64 | 67 | 72 |
| Wind speed (km/h) | 9.6 | 9.9 | 10.1 | 10.0 | 9.9 | 9.6 |
Methodology & sources
Temperature & precipitation — 1991–2020 normals computed from 28 years of daily observations at Jorge Chavez Intl, a weather station, about 4 km from the city centre. The underlying daily records come from NOAA's global station network.
Cloud, humidity, wind & sunshine — modelled estimates from NASA POWER, NASA's satellite-and-reanalysis climatology. This is the standard global source for atmospheric variables, which are not measured at most weather stations.