Are you planning a trip to Cusco? One of the most frequently asked questions we get is, “What is the weather like in Cusco month by month?” Most travelers imagine Peru as tropical, but at an altitude of 3,400 m (about 11,150 ft), Cusco has a cool, high-mountain, subtropical climate.
In this guide, we will explain each month in detail: typical temperatures, chances of rain, what to expect during the day and night, and tips on what to bring, and choosing when to visit.
Summary of Cusco’s Climate
Before we go into detail about the climate month by month, it is useful to understand how Cusco’s climate performs in general.
Located in the heart of the Andes, at an altitude of around 3,400 meters (11,150 feet), Cusco has what is known as a subtropical dry plateau climate in winter (Cwb). This means mild daytime temperatures, cool or cold nights, and a very distinct pattern of dry and wet seasons, rather than extreme heat or cold.
The two main seasons
Cusco enjoys two main seasons throughout the year:
Rainy season (November to March):
This is when Cusco becomes lush and green. Frequent afternoon showers, cloudy skies, and occasional thunderstorms are to be expected. Mornings are usually clearer, but rain can return suddenly in the afternoons. These months bring the heaviest rains of the year, which feed the valleys and rivers around the Sacred Valley and Machu Picchu.
Dry season (April to October):
This period is known locally as the sunny season. Days are bright and pleasant, with clear blue skies and cool nights. Rainfall is rare, making this the preferred time to hike the Inca Trail and visit Machu Picchu. The air is fresh, the landscapes are golden, and conditions are perfect for outdoor exploration.
Temperature patterns
Because of Cusco’s high altitude, temperatures don’t vary much between months. Days are generally mild or warm, while nights can be quite cold, especially from May to August.
- Average daytime highs: between 55 and 66 °F (13 and 19 °C)
- Average nighttime lows: between 32 and 41 °F (0 and 5 °C)
Even in “summer,” nights are still cool enough to require a jacket.
Rain and Sunshine
The rainiest months are January and February, when rainfall can easily exceed 8.3 inches. The driest months, usually June and July, may receive as little as 0.4 to 0.8 inches of rain. During the dry season, Cusco enjoys long sunny days, bright blue skies, and impressive visibility across the Andes.
What makes Cusco’s climate unique?
Due to its altitude, the temperature can drop quickly after sunset, and mornings can be cold even when the days are warm. Ultraviolet radiation is very strong throughout the year, so it is essential to bring sunscreen, sunglasses, and hats. The weather can change suddenly, especially in transitional months such as April and October, when light rain can appear unexpectedly.
In short, Cusco’s climate offers a mix of Andean cold and high mountain sun, with two clearly defined seasons that determine the way of life of the locals and the activities of travelers.
Monthly Breakdown: What to Expect
Here’s what I, as a local, would tell a friend visiting Cusco each month. Use this information to plan your luggage, hiking days, and expectations.
Cusco in January
Temperatures: daytime highs around 17-18°C (62-64°F); nighttime lows ~5-6°C (41-43°F).
Rain and weather: One of the rainiest months. Heavy afternoon rains, cloudy skies, frequent thunderstorms. Expect between 150 and 240 mm of precipitation.
Tip: Mornings are best for exploring, but bring waterproof gear. Trails can be slippery in the afternoon.
Ideal for: Travelers who want lush green landscapes, fewer crowds, and don’t mind a little rain.
January in Cusco is one of the rainiest months, with heavy showers in the afternoon and average high temperatures around 63°F.
Cusco in February
Temperatures: Similar to January, with highs between 63 and 64°F (17 and 18°C) and lows between 41 and 43°F (5 and 6°C).
Rain and weather: Often considered the rainiest month. Persistent rain for many days; few clear days.
National parks around the world
Tip: The Inca Trail is usually closed in mid-February for maintenance. Hiking can be dangerous due to muddy trails.
Ideal for: Budget travelers, photographers who love misty mountain landscapes, or people who are comfortable with humid weather.
Cusco in March
Temperatures: Highs ~17–18 °C; lows ~5–6 °C.
Rain & weather: Rain begins to taper slightly. Still many wet days, but more breaks. ~120–180 mm average.
Tip: It’s a transitional rain month. Mornings see better weather; afternoon showers still common.
Best for: Those wanting green landscapes but increasing chances of clearer skies.
Cusco in April
Temperatures: highs between 18 and 19 °C (64-66 °F); lows between 3 and 4 °C (37-39 °F).
Climate data
Rain and weather: rainfall decreases considerably (often below 80-100 mm). There are some dry days.
Tip: This is the beginning of the dry season. Bring warm clothing, as it can get cold in the evening.
Ideal for: Visitors looking for a balance, with less rain and fewer crowds than in high season.
Cusco in May
Temperatures: Highs ~64–68 °F; lows ~36–37 °F.
Rain and weather: Very little rainfall, many clear days.
Tip: Nights and early mornings can be cold; hats and gloves are recommended. Days are pleasant.
Ideal for: Excellent time for hiking, cultural visits, and getting in shape for the high season.
Cusco in June
Temperatures: daytime highs of 64–68°F (18–19°C); nighttime lows often near or slightly below 32–34°F (0–1°C).
National parks around the world
Rain and weather: one of the driest months, with rainfall between 0.4 and 0.8 inches (10–20 mm).
Tip: Be prepared for very cold nights. Wear warm clothing and be aware that frost is possible.
Ideal for: An excellent choice for hiking and exploring the outdoors under clear skies.
Cusco in July (the coldest month)
Temperatures: similar to June during the day (around 64°F), but nights are colder, with temperatures dropping to around freezing, perhaps even 32°F or slightly below.
Rain and weather: very dry, clear skies.
Tip: Nights are the hardest, so wear warm clothing suitable for the cold. Also beware of occasional hail or early morning frost.
Ideal for: Travelers who are comfortable with cold nights and want to enjoy clear, crisp views and fewer tourists.
Cusco in August
Temperatures: Daytime highs ~66°F (19°C); nights “slightly cold,” around 34-37°F (1-2°C).
Rain and weather: Still in the dry season; minimal rainfall, good visibility.
Tip: Ideal month for photography: golden light, spectacular landscapes, especially in the early morning.
Ideal for: Tourism with almost maximum clarity, but with fewer crowds than in September/October.
Cusco in September
Temperatures: Warmer days, between 66 and 68 °F; nights, between 34 and 37 °F.
Rain and weather: Slight increase in the chances of rain, but still mostly dry conditions.
Tip: An ideal time, as the weather is stable, the trails are dry, and light rains may begin to appear at the end of the month.
Ideal for: Balanced visits, as almost all outdoor activities are available, the weather is good, and there is a moderate influx of visitors.
Cusco in October
Temperatures: During the day, between 68 and 70°F (20 and 21°C); at night, between 4 and 5°C (39 and 41°F).
Rain and weather: Rain begins to appear, although it is much less frequent than in the high season. Rain is more likely at the end of the month.
Tip: Bring a light rain jacket. Mornings are usually great; in the afternoons, there may be passing showers.
Ideal for: A brilliant compromise: relatively dry, warm, and less crowded than in the peak dry months.
Cusco in November
Temperatures: Highs ~68–70°F (20–21°C); nights ~43–47°F (5–6°C).
Rain and weather: Rainfall begins to increase. Some sources indicate ~2.4–5.2 inches (60–130 mm) in November.
Tip: Afternoon rains become more frequent. Mornings are still the best time for sightseeing.
Cusco in December
Temperatures: Day ~64–68 °F; night ~41–43 °F.
Rain and weather: Rainy season in full swing. Many rainy days, especially in the afternoons and evenings.
Tip: Waterproof everything. Some hiking trails may be closed or have restrictions.
Ideal for: Visitors who don’t mind getting wet, enjoy more lush landscapes, and want shorter lines.
Highlights and recommendations by season
The best time to visit Cusco/Machu Picchu
If you want to play it safe, the best time to visit is from April to October (especially May to September), as there is little rain, the skies are clear, and hiking conditions are excellent.
October and early November are excellent options as “mid-season”: there are fewer people, the weather is pleasant, and the landscapes are greener.
Note: Heavy rains in January and February can affect trails or flights, although Peru’s mountain routes usually continue to operate.
What to wear and clothing strategy.
The key is to dress in layers: wear moisture-wicking base layers, mid layers of fleece, and a windproof and water-repellent outer layer.
- Cold nights: especially between June and September, nights can reach temperatures close to freezing, so it is advisable to bring thermal underwear, a hat, and gloves.
- Sun and UV rays: at high altitudes, UV rays are intense. Always carry sunscreen, sunglasses, and a hat, even on cloudy days.
- Rain protection: in wet months, bring a waterproof jacket, poncho, or waterproof cover for your backpack.
- Footwear: Waterproof hiking boots or shoes are essential during the rainy months.
- Backpack essentials: Waterproof cover, spare socks, reusable water bottle, light gloves, handkerchief or scarf.
Notes on trekking and hiking
- Trails are drier and safer between April and October.
- During the rainy season, trails may be muddy, slippery, or even flooded.
- Always check trail conditions, closures, and weather forecasts before heading out on a hike.
- Afternoon storms in wet months make the morning the best time to attempt summit or mountain pass crossings.
Health, altitude, and comfort.
- Because Cusco is located at high altitude, even cool days can be tough; spend a day or two acclimatizing.
- Stay well hydrated. Use more sunscreen than usual.
- Air quality occasionally presents problems with particulate matter (PM2.5), especially when there are fires or sources of pollution.
- The high UV index means sunburn is common, even on cloudy days. Use sunscreen with a protection factor of 30+.
When to avoid or be cautious
- Peak rainfall (January, February): Mountain trails and roads may become dangerous or temporarily closed.
- Travel disruptions: Severe storms can occasionally delay flights or cause flooding.
- Tourist peaks: June, July, and August are peak season; book well in advance.
Final thoughts:
If you want guaranteed sunshine and safe hiking conditions, choose between May and September.
If you don’t mind a little rain and want greener landscapes with fewer tourists, October and late March/April are excellent options.
Avoid the heart of the rainy season (January, February) if possible, unless your goals include rain, solitude, or photographing spectacular Andean skies.
Regardless of the month you choose, pack smart, dress in layers, and check the weather forecast daily, as conditions can change quickly at high altitude.
