Visiting Peru in August: High Season Continues with Clear Skies
August Weather in Peru
August is the driest month across most of the highlands. Nights in the highlands are cold but days are clear and warm.
| City | Avg High | Avg Low | Conditions |
|---|---|---|---|
| Lima | 17°C | 13°C | Coldest and greyest month — full garúa season |
| Cusco | 22°C | 2°C | Driest month — brilliant sunshine, cold nights |
| Arequipa | 20°C | 5°C | Clear, dry, excellent conditions |
| Puno | 17°C | 0°C | Cold nights, clear days, lake bright blue |
| Trujillo | 21°C | 14°C | Mild and dry |
| Huaraz | 20°C | 2°C | Best trekking month — driest of the year |
The Best Month for Trekking
If you are planning a high-altitude trek, August offers the most reliable conditions. In the Cordillera Blanca near Huaraz, August has the lowest probability of rain, the best visibility on high passes, and the clearest mountain views. The Santa Cruz Trek (4 days), Huayhuash Circuit (8–12 days), and Laguna 69 day hike are all at peak quality. See our Huaraz trekking guide for route planning.
Near Cusco, the Salkantay Trek (5 days) and Choquequirao (4–5 days) offer alternatives to the fully booked Inca Trail. Both treks are in excellent condition in August.
Lima in August
Lima is at its greyest in August — the garúa coastal fog sits heavily over Miraflores and Barranco, and temperatures hover around 13–17°C. Lima’s restaurant scene, museums, and cultural institutions are unaffected by weather, making August a perfectly good time for a city visit if you don’t mind the grey skies. The Larco Museum and Huaca Pucllana are excellent year-round. The coast south of Lima (Paracas, Ica) is drier and more pleasant.
Arequipa and Colca Canyon in August
Arequipa’s white sillar architecture looks spectacular under August’s clear blue skies. The Colca Canyon is at its most accessible — dry roads, the canyon floor trail open, and condors active at Cruz del Cóndor every morning. August is the best month to combine Arequipa with a 2-night Colca Canyon trek down to the oasis at Sangalle (approx. USD 80–USD 120 for a guided 3-day package as of 2026).
Key August Events
Arequipa Foundation Day (15 August): Arequipa celebrates its Spanish founding with parades, street festivals, and food events in the Plaza de Armas. The city fills with Peruvians visiting from Lima and other cities; book accommodation ahead.
Festival de la Vendimia del Sur (mid-August, Ica region): The Ica region celebrates its grape and pisco harvest. Ica is approximately 300km south of Lima; accessible as a day trip or overnight stop.
Packing for August
Highlands:
- Down jacket essential (Cusco nights 2°C; Puno near freezing)
- Sunscreen — UV at altitude in August is extreme
- Sunglasses and hat
- Warm base layers for mornings
Lima:
- Jacket and layers — the city is cool and grey
- Comfortable footwear for museums and restaurants
Amazon:
- Light, breathable clothes
- DEET repellent
- Low-water season — jungle walks excellent
Practical Tips
Book 3–4 months ahead: August demand for Machu Picchu tickets, Inca Trail permits, and Cusco accommodation approaches or exceeds July demand in some years.
Train tickets: PeruRail and Inca Rail trains from Cusco’s Poroy station to Aguas Calientes (Machu Picchu Pueblo) fill rapidly in August. Book your train at the same time as your Machu Picchu tickets.
Shoulder-season alternative: If August prices and crowds are deterring you, consider late September or October — weather is still generally dry in the highlands and visitor numbers drop sharply after the school holiday season ends.
Frequently Asked Questions
- Is August still peak season in Peru?
- Yes — August is the second busiest month alongside July. School summer holidays in Europe and North America keep visitor numbers high. Weather across the highlands is excellent: consistently clear with low chance of rain. Crowds at Machu Picchu, Cusco, and the Inca Trail are at maximum.
- Are the Machu Picchu tickets sold out for August?
- Tickets often sell out for popular August dates weeks or months in advance. Book at machupicchutickets.gob.pe as early as possible — ideally 3 months ahead. If the date you want is sold out, try adjacent days or check for cancellations early in the morning when slots occasionally open up.
- Is Huaraz less crowded than Cusco in August?
- Significantly so. The Cordillera Blanca around Huaraz is arguably at its best in August (the driest conditions of the year), but receives a fraction of the international visitors that Cusco does. Day hikes like Laguna 69 are busy, but multi-day treks like the Huayhuash Circuit have very few groups.