Cusco, Peru Climate
The warmest month is September, with an average high of 16°C; the coldest is July, with an average low of 2°C. A normal year brings 698 mm of precipitation.
Temperature through the year
The normal daily high and low. The line marks today.
- Normal low
- Normal high
- Reanalysis extreme high
- Reanalysis extreme low
Normals for Sep 24
- Normal high
- 16°C
- Normal low
- 4°C
- Reanalysis high
- 19°Cin 1998
- Reanalysis low
- 2°Cin 2006
- Chance of a wet day
- 21%
- Daylight
- 12 h 08 min
Month by month
Averages for 1991-2020. Wet days have at least 1 mm of precipitation in the reanalysis. Each month links to its own page.
| Month | Avg high | Avg low | Warmest | Coldest | Precipitation | Wet days |
|---|---|---|---|---|---|---|
| January | 14°C | 4°C | 19°C (2005) | 1°C (2015) | 133 mm | 21.7 |
| February | 14°C | 4°C | 19°C (1992) | 1°C (2008) | 124 mm | 19.8 |
| March | 14°C | 4°C | 18°C (2005) | 1°C (2008) | 96 mm | 18.6 |
| April | 14°C | 4°C | 19°C (2005) | 1°C (2011) | 39 mm | 6.0 |
| May | 14°C | 4°C | 20°C (2005) | -3°C (2020) | 9 mm | 3.1 |
| June | 14°C | 3°C | 18°C (2005) | -3°C (2004) | 3 mm | 0.0 |
| July | 15°C | 2°C | 19°C (2019) | -4°C (2015) | 6 mm | 0.0 |
| August | 15°C | 3°C | 21°C (2009) | -4°C (1993) | 9 mm | 3.1 |
| September | 16°C | 4°C | 21°C (1998) | -1°C (2005) | 18 mm | 3.0 |
| October | 16°C | 4°C | 22°C (2020) | -1°C (2010) | 59 mm | 12.4 |
| November | 16°C | 4°C | 21°C (2015) | 2°C (2000) | 72 mm | 12.0 |
| December | 15°C | 4°C | 20°C (2007) | 1°C (2010) | 130 mm | 18.6 |
| Year | 15°C | 4°C | 698 mm | 118 |
Precipitation
Rain and melted snow together. The chance of a wet day is the share of days with at least 1 mm of precipitation in the reanalysis.
698 mm in a normal year, most in January.
Chance of a wet day
- Chance of a wet day
Humidity and comfort
NASA POWER reanalysis, 1991-2020, for the grid cell around Cusco.
Days with a mean dew point of 18°C or more are rare here in every month.
| Month | Dew point | Humidity | Dry | Comfortable | Humid | Muggy | Oppressive | Miserable |
|---|---|---|---|---|---|---|---|---|
| January | 5°C | 82% | 100% | 0% | 0% | 0% | 0% | 0% |
| February | 6°C | 84% | 100% | 0% | 0% | 0% | 0% | 0% |
| March | 6°C | 85% | 100% | 0% | 0% | 0% | 0% | 0% |
| April | 5°C | 83% | 100% | 0% | 0% | 0% | 0% | 0% |
| May | 4°C | 81% | 100% | 0% | 0% | 0% | 0% | 0% |
| June | 3°C | 77% | 100% | 0% | 0% | 0% | 0% | 0% |
| July | 2°C | 74% | 100% | 0% | 0% | 0% | 0% | 0% |
| August | 2°C | 72% | 100% | 0% | 0% | 0% | 0% | 0% |
| September | 3°C | 72% | 100% | 0% | 0% | 0% | 0% | 0% |
| October | 4°C | 74% | 100% | 0% | 0% | 0% | 0% | 0% |
| November | 4°C | 76% | 100% | 0% | 0% | 0% | 0% | 0% |
| December | 5°C | 80% | 100% | 0% | 0% | 0% | 0% | 0% |
Comfort is judged by the day's mean dew point: dry below 13°C, comfortable to 16°C, humid to 18°C, muggy to 21°C, oppressive to 24°C, miserable above.
Clouds
Average share of the sky covered, from satellite (CERES and GEWEX SRB) by way of NASA POWER, 1991-2020.
The clearest month is July, with the sky 44 percent covered on average; the cloudiest is February, at 86 percent.
Wind
The mean wind speed over the whole day, from the MERRA-2 reanalysis by way of NASA POWER. Gusts run well above it.
The windiest month is September, averaging 10.4 km/h at 10 meters (33 feet) above the ground.
Daylight and sunshine
The longest day is Dec 14, with 12 h 56 min of daylight; the shortest is Jun 15, with 11 h 19 min.
- Day length
Solar energy
Average daily sunshine reaching the ground on a flat surface, in kilowatt-hours per square meter, clouds included.
Month pages
The weather in Cusco in each month, day by day.
What this means
A normal is the average of the thirty years 1991 to 2020, the period the World Meteorological Organization and NOAA use for comparison. It is an average, not a forecast: most days depart from it, and some by a long way.
Where no station record is within reach, the extremes shown are the highest and lowest the reanalysis produced for the date in 1991-2020, not measured records.
Cloud, humidity, wind and sunshine come from a reanalysis: a weather model run over the past with every observation fed in, averaged over a grid cell about 50 km across. It is consistent everywhere on Earth; it smooths local detail such as a lake shore or a valley.
More for this place
Nearby
Sources
Cloud, humidity, wind and sunshine, and temperature and precipitation: NASA POWER (MERRA-2, CERES and GEWEX SRB), 1991-2020. The data was obtained from the National Aeronautics and Space Administration (NASA) Langley Research Center's Prediction Of Worldwide Energy Resources (POWER) project funded through the NASA Earth Science Division: POWER Daily API v2, accessed 2026-09-24. Sun and moon: computed with the NOAA solar equations and Meeus.