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Best time to visit Peru

In Lima: May to September — the months averaging 18–27 °C by day. 12 of the twelve months clear that band in Lima, so this is the driest run of 5 in a row.

Peru is not one climate. Each reference city below is answered on its own numbers.

Lima

  1. January: 25 °C by day, 20 °C at night, 13 mm of rain
  2. February: 26 °C by day, 21 °C at night, 24 mm of rain
  3. March: 26 °C by day, 21 °C at night, 20 mm of rain
  4. April: 24 °C by day, 19 °C at night, 6 mm of rain
  5. May: 22 °C by day, 17 °C at night, 1 mm of rain, recommended
  6. June: 21 °C by day, 16 °C at night, 1 mm of rain, recommended
  7. July: 20 °C by day, 15 °C at night, 1 mm of rain, recommended
  8. August: 20 °C by day, 15 °C at night, 1 mm of rain, recommended
  9. September: 21 °C by day, 15 °C at night, 1 mm of rain, recommended
  10. October: 21 °C by day, 16 °C at night, 2 mm of rain
  11. November: 22 °C by day, 17 °C at night, 2 mm of rain
  12. December: 24 °C by day, 18 °C at night, 7 mm of rain
Warmest
February, 26 °C
Coolest
July, 20 °C
Driest
May, 1 mm
Wettest
February, 24 mm

Cusco

August to October. No month in Cusco reaches 18 °C by day, so those are simply the warmest three, at 17–17 °C.

  1. January: 16 °C by day, 8 °C at night, 234 mm of rain
  2. February: 16 °C by day, 8 °C at night, 211 mm of rain
  3. March: 16 °C by day, 8 °C at night, 166 mm of rain
  4. April: 16 °C by day, 7 °C at night, 73 mm of rain
  5. May: 16 °C by day, 6 °C at night, 27 mm of rain
  6. June: 16 °C by day, 5 °C at night, 9 mm of rain
  7. July: 16 °C by day, 5 °C at night, 11 mm of rain
  8. August: 17 °C by day, 5 °C at night, 21 mm of rain, recommended
  9. September: 17 °C by day, 7 °C at night, 37 mm of rain, recommended
  10. October: 17 °C by day, 8 °C at night, 82 mm of rain, recommended
  11. November: 17 °C by day, 8 °C at night, 123 mm of rain
  12. December: 16 °C by day, 8 °C at night, 193 mm of rain
Warmest
August, 17 °C
Coolest
January, 16 °C
Driest
June, 9 mm
Wettest
January, 234 mm

Iquitos

July to September. Every month in Iquitos averages above 27 °C by day, so the choice here is rain rather than temperature — those are the driest three months in a row.

  1. January: 30 °C by day, 24 °C at night, 243 mm of rain
  2. February: 30 °C by day, 24 °C at night, 228 mm of rain
  3. March: 30 °C by day, 24 °C at night, 297 mm of rain
  4. April: 30 °C by day, 23 °C at night, 301 mm of rain
  5. May: 29 °C by day, 23 °C at night, 277 mm of rain
  6. June: 28 °C by day, 23 °C at night, 206 mm of rain
  7. July: 28 °C by day, 22 °C at night, 164 mm of rain, recommended
  8. August: 30 °C by day, 23 °C at night, 146 mm of rain, recommended
  9. September: 30 °C by day, 23 °C at night, 159 mm of rain, recommended
  10. October: 31 °C by day, 24 °C at night, 197 mm of rain
  11. November: 30 °C by day, 24 °C at night, 232 mm of rain
  12. December: 30 °C by day, 24 °C at night, 260 mm of rain
Warmest
October, 31 °C
Coolest
June, 28 °C
Driest
August, 146 mm
Wettest
April, 301 mm

How this is worked out: a month qualifies when its mean daytime high falls between 18 °C and 27 °C. Where more than five qualify, the answer is the driest run of consecutive qualifying months; where none do, it is the driest three months in a row if the year is hot throughout, or the warmest three if it never gets there. The figures are the thirty-year monthly averages charted below, and they are averages, not a forecast — any single year can miss them by a wide margin.

Lima

Long-term averages for Lima: the mean daily high, the mean overnight low and the mean monthly rainfall across 30 years of ERA5 reanalysis data (1995–2024).

DayNight
15202530°C025mmJanFebMarAprMayJunJulAugSepOctNovDecJanuary: Day 25 °C, Night 20 °C, Rain 13 mm. February: Day 26 °C, Night 21 °C, Rain 24 mm. March: Day 26 °C, Night 21 °C, Rain 20 mm. April: Day 24 °C, Night 19 °C, Rain 6 mm. May: Day 22 °C, Night 17 °C, Rain 1 mm. June: Day 21 °C, Night 16 °C, Rain 1 mm. July: Day 20 °C, Night 15 °C, Rain 1 mm. August: Day 20 °C, Night 15 °C, Rain 1 mm. September: Day 21 °C, Night 15 °C, Rain 1 mm. October: Day 21 °C, Night 16 °C, Rain 2 mm. November: Day 22 °C, Night 17 °C, Rain 2 mm. December: Day 24 °C, Night 18 °C, Rain 7 mm
Show the monthly table
Lima
MonthDay (°C)Night (°C)Rain (mm)
January252013
February262124
March262120
April24196
May22171
June21161
July20151
August20151
September21151
October21162
November22172
December24187

Cusco

Long-term averages for Cusco: the mean daily high, the mean overnight low and the mean monthly rainfall across 30 years of ERA5 reanalysis data (1995–2024).

DayNight
5101520°C0250mmJanFebMarAprMayJunJulAugSepOctNovDecJanuary: Day 16 °C, Night 8 °C, Rain 234 mm. February: Day 16 °C, Night 8 °C, Rain 211 mm. March: Day 16 °C, Night 8 °C, Rain 166 mm. April: Day 16 °C, Night 7 °C, Rain 73 mm. May: Day 16 °C, Night 6 °C, Rain 27 mm. June: Day 16 °C, Night 5 °C, Rain 9 mm. July: Day 16 °C, Night 5 °C, Rain 11 mm. August: Day 17 °C, Night 5 °C, Rain 21 mm. September: Day 17 °C, Night 7 °C, Rain 37 mm. October: Day 17 °C, Night 8 °C, Rain 82 mm. November: Day 17 °C, Night 8 °C, Rain 123 mm. December: Day 16 °C, Night 8 °C, Rain 193 mm
Show the monthly table
Cusco
MonthDay (°C)Night (°C)Rain (mm)
January168234
February168211
March168166
April16773
May16627
June1659
July16511
August17521
September17737
October17882
November178123
December168193

Iquitos

Long-term averages for Iquitos: the mean daily high, the mean overnight low and the mean monthly rainfall across 30 years of ERA5 reanalysis data (1995–2024).

DayNight
20253035°C0500mmJanFebMarAprMayJunJulAugSepOctNovDecJanuary: Day 30 °C, Night 24 °C, Rain 243 mm. February: Day 30 °C, Night 24 °C, Rain 228 mm. March: Day 30 °C, Night 24 °C, Rain 297 mm. April: Day 30 °C, Night 23 °C, Rain 301 mm. May: Day 29 °C, Night 23 °C, Rain 277 mm. June: Day 28 °C, Night 23 °C, Rain 206 mm. July: Day 28 °C, Night 22 °C, Rain 164 mm. August: Day 30 °C, Night 23 °C, Rain 146 mm. September: Day 30 °C, Night 23 °C, Rain 159 mm. October: Day 31 °C, Night 24 °C, Rain 197 mm. November: Day 30 °C, Night 24 °C, Rain 232 mm. December: Day 30 °C, Night 24 °C, Rain 260 mm
Show the monthly table
Iquitos
MonthDay (°C)Night (°C)Rain (mm)
January3024243
February3024228
March3024297
April3023301
May2923277
June2823206
July2822164
August3023146
September3023159
October3124197
November3024232
December3024260

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