Callao weather in September
September is a fair month to visit Callao: highs of 22°C (71°F) and about 1 mm (0.0 in) of rain on average. Nights average 13°C (56°F) and cloud cover 90% (NASA POWER, 2001–2025 averages). It is the 2nd driest month of the year and the 5th coolest. Compared with August, it is about as warm and about as wet; October brings highs of 21°C (71°F) and 1 mm (0.0 in) of rain.
Figures are long-term averages for Callao, the largest city in Callao. See below for other places.
Is September a good time to visit Callao?
fair month Weather score 82/100.
September is a fair month in Callao.
Does it rain a lot in Callao in September?
No, it is usually dry: about 1 mm (0.0 in) falls in an average September. It is the 2nd driest month of the year.
How warm is Callao in September?
Days average 22°C (71°F) and nights 13°C (56°F).
Callao weather by month
| Month | High | Low | Rain | Cloud | Weather |
|---|---|---|---|---|---|
| January | 23°C (73°F) | 16°C (61°F) | 3 mm | 65% | fair |
| February | 23°C (74°F) | 17°C (62°F) | 5 mm | 66% | fair |
| March | 23°C (74°F) | 17°C (62°F) | 4 mm | 59% | fair |
| April | 23°C (73°F) | 16°C (60°F) | 1 mm | 46% | fair |
| May | 22°C (72°F) | 14°C (57°F) | 1 mm | 61% | fair |
| June | 22°C (71°F) | 13°C (55°F) | 1 mm | 86% | fair |
| July | 21°C (70°F) | 12°C (54°F) | 1 mm | 94% | fair |
| August | 21°C (70°F) | 13°C (55°F) | 1 mm | 95% | fair |
| September | 22°C (71°F) | 13°C (56°F) | 1 mm | 90% | fair |
| October | 21°C (71°F) | 14°C (56°F) | 1 mm | 82% | fair |
| November | 22°C (71°F) | 14°C (57°F) | 2 mm | 77% | fair |
| December | 22°C (71°F) | 15°C (59°F) | 3 mm | 75% | fair |
Sources: 2001–2025 monthly averages from NASA POWER (MERRA-2 reanalysis). Page updated . How we rate months
Weather across Callao in September
Weather can differ a lot within Callao: coasts, hills and mountains each have their own climate.
| Place | High | Low | Rain | Weather |
|---|---|---|---|---|
| Callao | 22°C (71°F) | 13°C (56°F) | 1 mm | fair |
| Carmen De La Legua Reynoso | 22°C (71°F) | 13°C (56°F) | 1 mm | fair |