Cusco Weather by Month
Planning Cusco by the calendar starts with one useful surprise: daytime temperatures stay fairly steady through the year, while precipitation and nighttime cold change dramatically. Typical afternoon highs sit around 20°C to 22°C, but the average low falls below 0°C in the heart of the dry season. That contrast shapes everything from a first morning in the city to the layers you pack for an early departure.
Cusco weather at a glance
Cusco’s wettest typical stretch runs roughly from November through March, while May through August brings the lowest monthly precipitation normals and the coldest nights. April and September are useful transition months, with lower precipitation normals than the wettest period and cool overnight conditions. These monthly figures describe climate normals, so check a near-departure forecast for the conditions expected during your trip.
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- For the driest typical conditions, look first at May through August, then prepare for very cold early mornings and nights.
- July has the lowest listed precipitation normal and the coldest listed average low, at -1.6°C.
- January has the highest listed monthly precipitation normal, so waterproof outer layers matter most then.
- October has the warmest listed average high, at 21.7°C, but precipitation is increasing compared with the driest months.
- Build an easy first day in Cusco, since high altitude affects the pace of city sightseeing and remote hikes alike.
Cusco monthly temperature and precipitation normals
The table below uses SENAMHI’s published Cusco monthly normals. High and low temperatures are in degrees Celsius. The precipitation column is presented as a SENAMHI monthly precipitation normal, keeping the source’s display format rather than assuming a unit beyond the agency’s labeling.
| Month | Average high | Average low | Monthly precipitation normal |
|---|---|---|---|
| January | 20.0°C | 7.5°C | 156 |
| February | 20.1°C | 7.2°C | 120 |
| March | 20.2°C | 6.7°C | 102 |
| April | 20.7°C | 4.3°C | 39 |
| May | 21.2°C | 0.8°C | 5 |
| June | 20.6°C | -1.0°C | 5 |
| July | 20.6°C | -1.6°C | 3 |
| August | 21.3°C | 0.4°C | 5 |
| September | 21.5°C | 3.2°C | 16 |
| October | 21.7°C | 5.4°C | 48 |
| November | 21.6°C | 6.2°C | 79 |
| December | 20.9°C | 6.7°C | 110 |
The key pattern is clear. A daytime plan can feel similar in several months, but dawn, dusk, and overnight conditions deserve much more attention from May to August. In the wetter months, the challenge shifts toward keeping outer layers, footwear, bags, and day plans ready for rain.
November to March: Cusco’s wetter months
November through March is Cusco’s wetter typical period. The precipitation normal rises from 79 in November to 110 in December, peaks at 156 in January, then remains high in February and March at 120 and 102. Nights are comparatively milder in this period, with average lows between 6.2°C and 7.5°C, though daytime highs still hover close to 20°C.
For city-based travel, pack a proper rain layer, shoes with dependable grip, and a dry bag or other protection for electronics and documents. Leave room in the schedule around outdoor plans rather than treating each day as fixed. This is especially helpful when your route includes mountain roads, rail travel, or long transfers between destinations.
April to October: drier days and colder nights
April begins a drier run, with a monthly precipitation normal of 39. May through August are the driest core months in the table, each showing 3 to 5, before the figure rises to 16 in September and 48 in October. The tradeoff is the overnight cold: average lows range from 0.8°C in May to -1.6°C in July.
Dry season does not mean uniformly warm weather. June and July pair average highs around 20.6°C with average lows below freezing. Pack for the temperature when you leave your hotel, not only for the afternoon. A warm mid-layer, insulated outer layer, and clothes that can be added or removed quickly make the day far easier to manage.
Cusco weather month by month
Use these notes to translate the monthly normals into a practical travel plan. They are best for choosing clothing and setting expectations, rather than predicting the weather on a particular date.
- January: The wettest listed month, with a precipitation normal of 156. Average temperatures are 20.0°C high and 7.5°C low, so waterproofing matters more than heavy cold-weather gear during the day.
- February: Precipitation remains high at 120, while the average high and low are 20.1°C and 7.2°C. Keep outdoor plans flexible and carry rain protection every day.
- March: The monthly precipitation normal falls to 102, but this is still part of the wetter period. The average low is 6.7°C, making nights milder than in the dry-season core.
- April: With a precipitation normal of 39, April marks a useful transition toward drier conditions. Average temperatures are 20.7°C high and 4.3°C low, so bring rain gear and a warm evening layer.
- May: The normal drops to 5, while the average low reaches 0.8°C. Expect a stronger temperature swing between a pleasant afternoon and a sharply colder start or finish to the day.
- June: The precipitation normal remains 5 and the average low falls to -1.0°C. Warm layers are essential for early departures, outdoor meals, and any time spent outside after sunset.
- July: This is the driest listed month, with a normal of 3, and it has the coldest listed average low at -1.6°C. It suits travelers who prioritize lower typical rainfall and can dress for cold nights.
- August: The monthly precipitation normal is 5, with an average high of 21.3°C and low of 0.4°C. Dry typical conditions continue, but mornings still call for insulated layers.
- September: The precipitation normal is still relatively low at 16, and the average high reaches 21.5°C. Nights become less severe, with an average low of 3.2°C.
- October: October has the warmest listed average high, 21.7°C, and an average low of 5.4°C. Its precipitation normal of 48 signals a transition toward wetter conditions.
- November: The precipitation normal climbs to 79, while average temperatures are 21.6°C high and 6.2°C low. A rain-ready daypack becomes a standard part of sightseeing plans.
- December: The precipitation normal reaches 110. Days remain mild by Cusco standards at an average high of 20.9°C, while the average low is 6.7°C.
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Which month suits your Cusco trip?
There is no single best month for every Cusco itinerary. Choose the balance that fits your priorities. Lower typical precipitation brings colder nights, while the months with milder nighttime averages carry much higher precipitation normals. If your plans combine city sightseeing with the Sacred Valley or Machu Picchu, leave a little breathing room instead of stacking every transfer and activity into consecutive tight time slots.
| Priority | Months to consider | Weather tradeoff |
|---|---|---|
| Lowest listed precipitation normals | May to August | Normals range from 3 to 5; overnight lows range from 0.8°C to -1.6°C. |
| Milder typical nights | December to March | Average lows range from 6.7°C to 7.5°C; precipitation normals range from 102 to 156. |
| Warmest typical afternoons | September to November | Average highs range from 21.5°C to 21.7°C; precipitation rises from 16 to 79. |
| Transition-month balance | April or September | Precipitation normals are 39 and 16, with cool average lows of 4.3°C and 3.2°C. |
Do not select dates on the assumption that one weather season is automatically the cheapest. Compare live prices for the same itinerary, lodging standard, transport needs, and booking conditions once you have narrowed down your preferred travel window. A weather choice is most useful when it supports the kind of days you want to have, rather than a presumed bargain.
What to pack for Cusco weather
Layering works in every month because the difference between typical daytime highs and nighttime lows is large. In the dry-season core, the warm layer you barely notice at midday can become the item you reach for first after sunset. In wetter months, keep the same layers but add reliable rain protection.
- A breathable base layer and a warm mid-layer for cool mornings and evenings.
- An insulated jacket for May through August, when average lows sit close to or below 0°C.
- A waterproof outer shell for November through March, plus April and October transition travel.
- Comfortable closed shoes with grip, especially when rain is part of the forecast.
- Sun protection for daytime time outdoors, including sunscreen, sunglasses, and a brimmed hat.
- A small cover or dry bag for a phone, camera, travel documents, and spare layers.
Altitude, hiking, and weather-sensitive day trips
Cusco is a high-altitude city, so physical adjustment deserves as much attention as the monthly temperature chart. Keep your arrival day gentle, build in gradual acclimatization, and avoid making a demanding hike the first fixed commitment of the trip. An altitude acclimatization guide for Cusco can help you shape a more comfortable first 24 to 48 hours before longer excursions.
City sightseeing and remote trekking need different margins for error. Hiking and climbing injuries are common in remote places, where emergency responders can take hours or days to reach travelers. Use a three-day Cusco itinerary to give yourself time to settle in before a Sacred Valley travel guide from Cusco or a Machu Picchu day trip from Cusco becomes the centerpiece of the journey.
Keep transport plans flexible in every season
Leave buffer time around weather-sensitive transfers, especially if a delay would affect a train, flight, timed entry, or overnight stay. Rain is one reason to avoid an overly tight schedule. Separately, demonstrations in Peru can close roads, rail lines, highways, airports, and public transport without warning, so check transport status and official alerts close to departure.
Travelers with accessibility requirements should confirm the exact arrangements with each hotel, vehicle provider, station, and attraction before booking. Rain, cold, altitude, and the route underfoot can all affect how manageable a day feels. Specific needs are easiest to accommodate when they are planned into transfers and day trips from the start.
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Plan Cusco around the conditions that matter to you
For lower typical precipitation, choose May through August and treat warm night layers as non-negotiable. For milder nights, look to the wetter November-to-March period and pack accordingly. April, September, and October offer transition conditions worth considering for travelers who want to balance rainfall and overnight temperatures. Whichever month you choose, check the current forecast, protect time for acclimatization, and keep important transfers flexible.
Frequently asked questions
What is the best month for dry weather in Cusco?
July has the lowest listed monthly precipitation normal, at 3, with May, June, and August close behind at 5. The tradeoff is cold nights, as July also has Cusco’s coldest listed average low at -1.6°C.
What is the rainiest month in Cusco?
January is the rainiest listed month in SENAMHI’s Cusco normals, with a monthly precipitation normal of 156. February and March also remain firmly within the wetter period.
What is the warmest month in Cusco?
October has the warmest listed average daytime high, at 21.7°C. Its average low is 5.4°C, and its precipitation normal of 48 is higher than during the dry-season core.
Is Cusco cold at night?
Cusco can be very cold at night, particularly from May through August. Average lows range from 0.8°C in May to -1.6°C in July, even though daytime highs remain around 21°C.
Should I plan hiking immediately after arriving in Cusco?
No, it is wiser to keep the arrival day easy and allow time for gradual acclimatization before a demanding hike. Cusco is at high altitude, and remote hiking needs extra caution because emergency help can take hours or days to reach isolated areas.
How close to departure should I check Cusco weather and transport?
Check the forecast, transport status, and official alerts shortly before departure. Monthly normals are useful for planning, but they are not a forecast, and transport conditions can change because of disruptions.
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