What is the Weather like in Peru?


Peru, located in western South America, is a country with diverse geography and climate. Due to its location near the equator and the presence of the Andes Mountains, Peru experiences a wide range of weather patterns throughout the year. In this article, we will explore the different climatic zones in Peru, discuss the seasonal variations, and delve into specific weather characteristics of major cities in the country.

The Three Climatic Zones of Peru

Peru can be broadly divided into three climatic zones:

1. Coastal Zone

The coastal zone, also known as the “Costa,” is influenced by the cool Humboldt Current flowing along the Pacific coast. This current brings cold waters from the Antarctic, resulting in a dry and desert-like climate. The coastal region experiences mild temperatures throughout the year, with little rainfall. However, there is significant variation in temperature between day and night.

2. Andean Highlands

The Andean Highlands, or the “Sierra,” are characterized by the majestic Andes Mountains, which run parallel to the coast. This region experiences a cooler, alpine climate due to its higher elevation. The weather in the Andean Highlands is influenced by the seasonal variations in the movement of the Intertropical Convergence Zone (ITCZ) and the presence of the El Niño Southern Oscillation (ENSO). The highlands have two distinct seasons: the dry season and the rainy season.

Dry Season

The dry season in the Andean Highlands typically lasts from May to September. During this period, the weather is generally sunny, and rainfall is minimal. However, nights can be very cold, especially at higher altitudes. It is advisable to pack warm clothing if you plan to visit the highlands during the dry season.

Rainy Season

The rainy season in the Andean Highlands occurs from October to April. This period is characterized by frequent rainfall, particularly in the afternoons. The weather during the rainy season can be unpredictable, with clear mornings followed by heavy showers in the afternoon. It is essential to be prepared for sudden changes in weather and pack waterproof clothing.

3. Amazon Rainforest

The Amazon Rainforest, also known as the “Selva,” covers a significant portion of eastern Peru. This region experiences a tropical rainforest climate, characterized by high temperatures and abundant rainfall throughout the year. The weather in the Amazon Rainforest is influenced by the ITCZ, which brings moist air from the Atlantic Ocean. The region has two distinct seasons: the wet season and the dry season.

Wet Season

The wet season in the Amazon Rainforest typically occurs from December to March. During this period, rainfall is frequent and intense, leading to high humidity levels. The wet season is the best time for wildlife enthusiasts as it offers opportunities to witness the vibrant flora and fauna of the rainforest.

Dry Season

The dry season in the Amazon Rainforest generally lasts from June to September. Despite being called the dry season, some rainfall still occurs, but it is less intense compared to the wet season. The dry season is an excellent time for outdoor activities, as trails are more accessible, and there is less presence of mosquitoes.

Weather in Major Cities of Peru


Lima, the capital city of Peru, is located on the central coast. It falls within the coastal climatic zone. The city experiences a mild desert climate with little rainfall throughout the year. The average temperature in Lima ranges from 15°C (59°F) to 19°C (66°F). The summer months, from December to April, are characterized by higher temperatures and occasional fog, known as “garúa.” The winter months, from June to September, see cooler temperatures and a persistent layer of fog along the coast.


Cusco, situated in the Andean Highlands, is a popular destination due to its proximity to the iconic Machu Picchu. The city has a highland climate, with cool temperatures year-round. The average temperature in Cusco ranges from 9°C (48°F) to 20°C (68°F). The dry season from May to September is the best time to visit Cusco, as the weather is generally sunny with clear skies. However, temperatures can drop significantly during the nights, so it is essential to pack warm clothing.


Iquitos, located in the Amazon Rainforest, experiences a hot and humid tropical climate. The average temperature in Iquitos ranges from 23°C (73°F) to 32°C (90°F) throughout the year. The city receives abundant rainfall, with the wettest months occurring from December to March. The weather in Iquitos is relatively consistent, with high humidity levels and occasional thunderstorms.

Frequently Asked Questions about the Weather in Peru

1. What is the best time to visit Peru?

Peru can be visited throughout the year, but the best time to visit depends on the region you plan to explore. The dry season (May to September) is generally considered the best time to visit the Andean Highlands, including Cusco and Machu Picchu. For those planning to explore the Amazon Rainforest, the dry season (June to September) offers better access to hiking trails and wildlife sightings. However, keep in mind that weather patterns can vary, so it is essential to check specific regions and plan accordingly.

2. Are there any temperature extremes in Peru?

Yes, Peru experiences temperature extremes due to its diverse geography. In the highlands, temperatures can drop below freezing point, especially during the dry season. Conversely, the coastal region can witness occasional heatwaves, with temperatures exceeding 30°C (86°F). It is crucial to pack appropriate clothing and be prepared for varying temperatures depending on the region you are visiting.

3. Does it rain a lot in Peru?

The amount of rainfall in Peru varies significantly depending on the region and the time of year. The coastal region experiences very little rainfall, whereas the Andean Highlands and the Amazon Rainforest receive more substantial amounts of rainfall. It is advisable to check the specific weather forecast for the region you plan to visit to be prepared for any potential rainfall.

While the weather in Peru is generally pleasant, there are a few weather-related risks to be aware of. In the highlands, altitude sickness can be a concern, especially for those traveling to Cusco and other high-altitude destinations. It is essential to acclimatize properly and take necessary precautions. Additionally, the coastal region is prone to occasional earthquakes and tsunamis, although these are rare. It is recommended to stay informed about any potential natural hazards and follow local authorities’ guidelines.

5. Can I experience all four seasons in Peru?

Yes, Peru offers the opportunity to experience all four seasons due to its diverse geography and climate. In the highlands, you can witness the dry and rainy seasons, while the coastal region experiences mild summers and cooler winters. However, the Amazon Rainforest has a more consistent tropical climate, with distinct wet and dry seasons.

6. What should I pack for a trip to Peru?

When packing for Peru, it is essential to consider the region and the time of year you plan to visit. Regardless of the season, it is advisable to pack layers of clothing, as temperatures can vary throughout the day. Additionally, pack comfortable walking shoes, sun protection (hat, sunscreen), insect repellent (especially for the Amazon Rainforest), and waterproof clothing (during the rainy season).

7. Can I witness unique weather phenomena in Peru?

Yes, Peru offers opportunities to witness unique weather phenomena. In Lima, the coastal fog known as “garúa” creates a mystical atmosphere, especially during the winter months. In the Andean Highlands, you can experience stunning cloud formations and atmospheric effects due to the high altitude. Additionally, the Amazon Rainforest provides the chance to witness dramatic thunderstorms and vibrant rainforest showers.


Peru’s diverse geography gives rise to a wide range of weather patterns throughout the country. From the arid deserts along the coast to the cool highlands and the lush Amazon Rainforest, each region offers a unique climate experience. By understanding the climatic zones and seasonal variations, travelers can plan their trips accordingly and make the most of their time in this captivating country.

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