Quick Summary: Peru's seasons run in opposite directions depending on the region. The Andes (Cusco, Machu Picchu, the Sacred Valley, Lake Titicaca) have a dry season from May to September and a wet season from November to March — which is the opposite of the coastal calendar in Lima, where May to November is the grey garúa season and December to April is sunny and warm. Most Peru itineraries cross both regions, so the choice isn't dry-vs-wet generally — it's which trade-off makes sense for your trip. This guide is the region-by-region comparison plus the practical month-by-month verdict for combined trips. The single best month for a combined Lima-and-Andes trip is April or October (the shoulders). The single best month for the Andes alone is May or September. Beach trips up north (Máncora) flip the calendar entirely.

The Two Seasons, Not Four

Peru has a tropical latitude (12–18° south), but the Andes mountains and the Humboldt Current produce climates that don't match what "tropical" suggests. The country has two seasons in most regions, not four — and the two are characterised more by rainfall pattern than by temperature. Daytime temperatures vary surprisingly little across the year in any given location; what changes is rain.

What this means for trip planning: the "best time to visit Peru" depends almost entirely on where you're going and what you want to do, not on any universal calendar.

The Regions and Their Rhythms

The Andes: Cusco, Machu Picchu, Lake Titicaca, Arequipa

  • Dry season: May to September. Clear skies, cold nights (close to freezing in June and July at altitude), dry trails, peak prices, peak crowds.
  • Wet season: November to March. Afternoon showers, occasional storms, fewer tourists, lower prices. The Classic Inca Trail closes in February for maintenance.
  • Shoulder months: April and October. The sweet spots — generally dry, lower crowds, lower prices.

Specific notes:

  • Daytime temperatures at Andean altitude vary modestly across the year (15–20°C is the typical range).
  • Sunshine is a key driver of the photography appeal — dry-season Andes are dramatic, wet-season Andes are atmospheric and mist-heavy.
  • The clearest single visit window for Machu Picchu itself is late May to early June — the rains have just ended, the surrounding mountains are at their greenest, and crowds haven't peaked yet.

The Coast: Lima and the Southern Deserts

  • Dry / sunny season: December to April. Warm, humid, beach weather (24–28°C in Lima at peak). The standard summer.
  • Grey / garúa season: May to November. Cool (15–19°C), persistently overcast, heavy fog, never quite raining but always damp. Not unpleasant — just persistently grey.
  • Shoulder months: April and November sit between the two.

The Lima rhythm is the inverse of the Andean one. May to September is excellent in Cusco and miserable in Lima; December to March is the opposite.

Specific notes:

  • Lima rarely rains (annual rainfall under 10 mm) but the garúa fog drapes the city for months at a time. It's not raining in the literal sense; it just feels permanently wet.
  • Paracas, Huacachina, and the southern coastal deserts follow the Lima pattern. Sandboarding in Huacachina is more pleasant December–April; the desert at peak heat (January–February) can be brutal.
  • Beach travel up north (Máncora, around Tumbes) follows a third pattern — December to April is peak season; the rest of the year is still warm but with more rain.

The Amazon: Puerto Maldonado, Iquitos

  • High water / wet season: December to April. Rivers rise dramatically, jungle treks become harder, river-boat access expands to backwaters.
  • Low water / dry season: June to October. River levels drop, trails become more accessible, wildlife concentrates around water sources (better viewing).
  • Transition months: May and November.

Specific notes:

  • The Amazon is always hot and humid (28–35°C with high humidity). The "seasons" are about water, not temperature.
  • Wildlife viewing is generally better in dry season; bird-watching is excellent year-round.
  • Mosquito populations spike in the wet season.

Month-by-Month — The Quick Verdict

For Peru-wide trips combining the Andes and at least one other region:

  • January: wet season for the Andes; beach season for the coast. Choose if: beach trip is the priority; you're tolerant of rain in the highlands.
  • February: wettest month in the Andes. Inca Trail closed. Choose if: you specifically want beach time and don't care about the Inca Trail.
  • March: wet but improving in the Andes; still warm on the coast. Choose if: you want shoulder pricing without full peak weather.
  • April: sweet spot. Andes drying out, mountains still green from rains, manageable crowds. Coast still warm. The single best month for combined trips.
  • May: excellent for the Andes (the dry season starts, post-rain greenery, before the peak crowds). Coast turning grey but functional. Strong choice.
  • June: peak Andes weather, peak prices, peak crowds. Coast firmly grey. Inti Raymi week (June 22–26) sees enormous Cusco-region demand.
  • July: peak Andes, peak crowds (July 28–29 Peruvian Independence Day surge adds another spike). Coast at its greyest.
  • August: peak Andes, peak crowds. Coast at its greyest.
  • September: excellent for the Andes (still dry, crowds thinning). Coast starting to clear a little. Strong second-half option.
  • October: sweet spot. Andes still mostly dry but transitioning; coast emerging from grey. Lower crowds and prices.
  • November: Andes wet season starting. Coast warming up. Mixed quality.
  • December: Andes wet, coast sunny. Choose if: beach trip priority; can stomach the Andes rains.

The Trade-offs by Trip Type

For a Machu Picchu and Cusco focused trip

The Andes calendar dominates. May, September, or October are the sweet spots. June–August is the peak (highest prices, largest crowds, but most reliable weather). November–March is the wet season with real trade-offs.

The wet season isn't a no-go — many travellers visit then for the dramatic mist, lower prices, and emptier sites. The accepted risk is occasional landslides on the Machu Picchu train line and the February closure of the Inca Trail. April is genuinely the best month for travellers who want maximum value: rains ending, mountains green, crowds modest.

For a multi-region trip (Lima, Arequipa, Titicaca, Cusco)

The trade-off is sharper. The Andes calendar wants May–September; the coast calendar wants December–April. The compromise is the shoulder months (April or October). Both regions are acceptable; neither is at peak.

Specific approach: prioritise the Andes (the most rain-affected and the most expensive to redo if weather fails), accept that Lima might be partially grey. Most Peru itineraries that combine both regions land in April–May or September–October.

For the southern coast trip (Lima, Paracas, Huacachina, Nazca)

December to April is the right window — warm, sunny, beach-tolerable. Paracas wildlife (sea lions, Humboldt penguins) is year-round. The Nazca Lines flight is largely weather-independent.

For Amazon trips

June to October is preferable for the dry-season concentration of wildlife around water. December to April is high-water access to backwater rivers. Avoid the transition months (May, November) if possible — neither dry nor full-wet, with mixed conditions.

For northern beach trips (Máncora)

December to April is the peak season. The rest of the year is still tropical-warm but with more rain.

The Festival Calendar

A few dates that significantly affect prices and availability:

  • La Candelaria (Puno, late January / early February) — 17-day festival, the largest in Peru, particularly affecting Lake Titicaca region.
  • Easter / Holy Week (variable, March–April) — domestic travel spike; major processions in Cusco (Señor de los Temblores) and Ayacucho.
  • Inti Raymi (Cusco, June 24) — the festival of the sun. Hotels in Cusco book out 2–3 months ahead during June 22–26.
  • Peruvian Independence Day (July 28–29) — nationwide; domestic travel surge.
  • Qoyllur Rit'i (variable, June, near Cusco) — high-altitude Quechua pilgrimage; UNESCO Intangible Cultural Heritage.
  • Corpus Christi (variable, May or June, Cusco) — major processional festival in the historic centre.
  • Santo Domingo / Apurimac region festivals — various local festivals throughout the year.

For most travellers planning a standard Cusco-Machu Picchu trip, the dates that matter most are June 22–26 (Inti Raymi) and July 28–29 (Independence Day). Booking around these requires significantly more lead time.

Prices by Season

Roughly, in 2026:

  • Andes peak (June–August): hotels at peak rates (often 1.5–2× off-season), train tickets at peak pricing, day-trip prices firm.
  • Andes shoulder (April–May, September–October): 15–30% off peak. The genuinely best value-to-experience ratio.
  • Andes off-season (November–March, excluding February): 30–50% off peak. Some weather-day risk; real value if you're flexible.

Lima follows the inverse pattern with a less extreme spread (Lima is less seasonal than the Andes).

Weather-Day Risk

A few specific weather-related disruption considerations:

  • Train cancellations on the Cusco-Machu Picchu line are most common November to March. Landslides occasionally close the route for days. The risk is moderate; the impact when it happens is significant. Travel insurance with trip-disruption coverage is worth carrying.
  • Cusco airport (CUZ) closures are more common in wet season afternoons (fog) but possible year-round. See Cusco airport guide.
  • Inca Trail conditions in wet season can be genuinely difficult — slippery stone steps, muddy descents, occasional washouts. The trail stays open (except February) but the experience degrades.
  • Lake Titicaca boat services can be cancelled in heavy weather; this is more common in the wettest months but possible year-round.
  • Rainbow Mountain visibility is meaningfully reduced in wet season — overcast skies dull the colours. Wet-season trips have a real chance of dud-weather days.

What to Bring by Season

A short list of season-specific packing tweaks. The full kit is in what to pack for Machu Picchu and Cusco.

Dry season (Andes):

  • Warmer base layers and a real down jacket. Nights are cold (close to freezing in June–July).
  • Strong sun protection — clear skies at altitude produce extreme UV.
  • Slightly lighter rain gear (afternoon showers possible but not constant).

Wet season (Andes):

  • Heavier rain gear — quality waterproof jacket and rain pants.
  • Quick-dry everything (cotton stays wet).
  • Mud-tolerant boots.
  • Slightly less warm gear (the heat-trapping cloud cover makes nights slightly less cold than dry season).
  • Dry bags for electronics.

Lima dry season (December–April):

  • Lightweight summer clothes; humidity-tolerant fabrics.
  • Sunscreen for the coast.

Lima garúa season (May–November):

  • Slightly warm layers and a windbreaker.
  • Less swimming-related packing.

Surrounding Context

FAQ

What's the best month overall for a Peru trip?

April or October for combined Andes-and-coast trips. May or September for Andes-focused trips. December–March for beach-focused trips. June–October for Amazon trips.

Should I avoid Peru in the wet season?

Not necessarily. The wet season has lower prices and far fewer crowds. The trade-off is more rain in the Andes, occasional disruptions on Machu Picchu transport, and reduced colour at Rainbow Mountain. Many travellers visit in the wet season specifically for the empty sites; the dry season is just where the conventional wisdom sits.

Is the Lima garúa really as bad as people say?

Persistent but not painful. The city stays around 15–19°C with overcast skies for weeks at a time. Restaurants, museums, and most activities are unaffected. Beach travel and outdoor weather-dependent activities are diminished. Travellers from foggy Pacific climates (UK, Pacific Northwest) handle it well; those expecting tropical beach weather are disappointed.

Can I do the Inca Trail in February?

No — the Classic Inca Trail closes the entire month of February for maintenance. Salkantay and other treks remain open.

Will I see Machu Picchu in heavy fog if I visit in the wet season?

Possible but not guaranteed — Machu Picchu sits above the cloud layer for parts of most days, and the citadel often emerges from morning fog by mid-morning. Wet-season visits with cloud-cleared views happen regularly; pure-fog visits also happen. About 30% of wet-season mornings have meaningful fog issues.

Is Lake Titicaca worth visiting in the wet season?

Yes, with caveats. The lake is striking in any weather; the Uros islands and homestays operate year-round. Boat services occasionally cancel in heavy weather. The wet-season visit is genuinely worth it for lower prices and crowds, with modest weather risk.

What about the new Chinchero airport opening?

The new airport (CHX) is scheduled to open in 2026–2027. Until then, CUZ remains the operational airport. Weather closure patterns are similar at both airports (afternoon fog risk).

Should I plan around Inti Raymi?

If you want to attend — yes, book hotels 3–4 months ahead. If you specifically don't — avoid the third week of June in Cusco.

Can I see Rainbow Mountain in the wet season?

Possible but not optimal. Wet-season trips have a real chance of cloud-obscured colour. Tours still operate; the experience can be diminished. For a single high-altitude day trip in wet season, Humantay Lake is more weather-tolerant.

Is there a "sweet spot" month for the whole country?

April is the closest single answer — the Andes rains are ending, the coast is still warm, prices are modest. October is the close second. Neither is perfect, but both are reasonable across multiple regions.

Will it snow at Machu Picchu?

No — Machu Picchu itself sits in cloud forest at 2,430 m. Snow doesn't reach the citadel. Snow at the higher passes (Salkantay 4,650 m, Inca Trail Dead Woman's Pass 4,215 m) is possible in wet season, particularly in June–August nights at altitude.

Should I bring a rain jacket year-round?

Yes — afternoon showers are possible in the Andes any month. The wet-season jackets need to be more substantial; dry-season jackets can be lighter.

What's the cheapest time to visit?

November to early March (excluding holiday weeks). Hotels and tours at 30–50% off peak; trains and flights also discounted. The trade-off is the weather risk.

Is December good for Peru?

Mixed. Lima and the coast are warm and sunny; the Andes are wet. If you can sequence the trip — coast first in December, Andes-quality concerns acknowledged — it's workable but not the optimal month.

Can I visit Peru year-round?

Yes — Peru is a year-round destination with different regions optimal at different times. The question is which combination works for your specific trip.

If you found this useful, the next questions readers usually ask are answered in: