December is when Patagonia turns up the light. The southern summer arrives, the days swell to their longest of the entire year, and the region slides into the warmest, brightest stretch of its calendar. If you have ever dreamed of hiking under an enormous, unhurried sky, this is the month that delivers it most generously.
So, is December a good time to visit Patagonia? For most travelers, the answer is an enthusiastic yes — with one honest caveat. December also marks the beginning of the true high-season rush, and because it holds the Christmas and New Year holidays, demand climbs sharply as the month goes on.
That makes December a month of two halves in spirit: glorious conditions and abundant daylight on one side, and the need to plan and book well ahead on the other. Get the timing and the logistics right, and it is hard to beat.
This guide looks honestly at what December offers — the weather, the famous long days, the trail conditions, and the holiday-season demand — so you can decide whether to plan your Patagonia trip around it, and how to do it well.
December brings the longest days of the year to Patagonia — and the start of its busiest, brightest stretch.
1. The Weather in Patagonia in December
December is early summer, and the weather is about as warm and settled as Patagonia gets. Daytime highs typically reach around 15 to 19°C (59 to 66°F), the nights are mild for the region, and long, sunny stretches are common.
The constant companion is wind. December sits squarely in the windy season, and gusts can be strong on exposed ridges, passes and lake shores. It rarely stops a trip, but it shapes how you plan each day, favouring calmer mornings for the most exposed walking.
Showers still pass through — this is Patagonia, after all — but they tend to be briefer and to clear faster than in spring. The overall trend through December is toward warmer, drier and more dependable conditions, with Patagonia December weather among the most reliable of the year.
The high peaks keep enough snow to stay dramatic, while the valleys are lush and green. For hikers who want warmth and stability, December is a strong bet.
2. The Longest Days of the Year
December’s signature gift is daylight. Around the summer solstice, close to December 21, the far south enjoys roughly seventeen hours of light, with long, lingering dawns and dusks on either side. In practical terms, it barely gets properly dark.
For a hiker, this is transformative. You can start late, finish late, wait out a windy spell, and still complete a long day on the trail with hours to spare. It takes the time pressure out of ambitious itineraries.
It also means you can pair big experiences in a single day — a morning at the Perito Moreno glacier and an afternoon trek, for instance — without the race against sunset that shorter months impose. The light itself becomes part of the trip.
If you are trying to work out how to use all that daylight, our guide to how many days you should plan for Patagonia helps you shape an itinerary that makes the most of December’s long days.
Near the December solstice, daylight stretches to around seventeen hours — time for glaciers and trails in one day.
3. Trail Conditions in December
By December, the season is in full swing and the trails are at their most accessible. The day hikes around El Chaltén, the full W route and the longer O circuit in Torres del Paine are all open and in good condition.
The late snow that can linger on high passes in spring has generally cleared, opening up the complete range of classic routes. Warm, stable weather and dry ground make for comfortable, confident walking across both the Argentine and Chilean sides.
This is the month when almost nothing is off the table due to conditions, which is a large part of its appeal for ambitious trekkers. The limiting factor in December is rarely the trail itself — it is availability, as the holiday crowds compete for the same refuges and lodges.
Because the routes are fully open but heavily booked, December rewards travelers who lock in their plans early. Our Patagonia hiking trips secure the trail bookings and refuges well in advance, which is exactly what this in-demand month calls for.
Now you can choose your type of trip:
Type of trip
4. Christmas, New Year and Holiday Demand
The honest caveat about December is demand. The month contains the Christmas and New Year holidays, which draw a wave of international and Argentine travelers alike, and the second half of December is among the busiest and most sought-after stretches of the whole season.
That popularity has real consequences for planning. Flights, lodges, refuges and guided departures fill up months in advance around the holidays, and prices rise accordingly. Leaving it late can mean missing the itinerary you want entirely.
The holiday window is also a wonderful time for a family trip, with warm weather, long days and a festive atmosphere — which is part of why it books out so early. Early December, before the holidays peak, can feel a touch calmer while still delivering the long-day magic.
The practical message is simple: December is a superb time to visit Patagonia, but it is not a month to improvise. Booking well ahead is the single most important thing you can do, and our Patagonia tours are built to lock in the holiday-season logistics before they sell out.
The Christmas and New Year window is a favourite for family trips — and the busiest stretch to book.
Who December Suits Best
December suits travelers who want the warmest, longest, most reliable days of the year and are willing to plan ahead to get them. If settled weather and endless daylight top your list, this is a standout month.
It is ideal for ambitious hikers who want every classic route open, for families travelling over the holidays, and for anyone who wants to combine big-ticket experiences without fighting the clock. The festive atmosphere is a bonus for many.
Who might think twice? Budget-focused travelers and those who dislike crowds may prefer the shoulder months of November or March, which trade a little daylight and warmth for more space and lower prices. But for peak conditions, December is hard to top — provided you book early.
December in Patagonia at a Glance
| What to expect | In December |
| Season | Start of peak summer season |
| Daytime temperatures | Roughly 15–19°C (59–66°F) |
| Daylight | Longest of the year — around 17 hours |
| Wind | Strong — peak windy season |
| Crowds | Rising sharply, highest over the holidays |
| Trails | Fully open, including W and O circuits |
| Best for | Long days, warm weather, families, ambitious treks |
5. FAQs About Is December a Good Time to Visit Patagonia?
December is one of the best months to visit Patagonia for weather and daylight. It is early summer, so you get the warmest, most settled conditions of the year and the longest days, with around seventeen hours of light near the solstice.
All the classic trails are open, from the El Chaltén day hikes to the full W and O circuits in Torres del Paine. The one real caveat is demand: December contains the Christmas and New Year holidays, so it is busy and prices are high.
If you are happy to book well in advance, December is a superb time to visit. Travelers seeking fewer crowds and lower prices may prefer the shoulder months instead.
Yes, and it is a popular time to do exactly that. Over the Christmas and New Year holidays the weather is warm, the days are at their longest, and all the major trails are open, making it excellent for hiking.
The important thing to know is that this is the busiest window of the entire season. Flights, lodges, refuges and guided departures book up months ahead for the holidays, and prices are at their highest.
If hiking Patagonia over the Christmas holidays appeals, the key is to plan and reserve very early. With the logistics locked in well in advance, the festive season offers some of the finest conditions and a lively, celebratory atmosphere.
For December, and especially the Christmas and New Year holidays, book as far ahead as you realistically can — several months at minimum, and ideally six months to a year for the holiday window.
December is peak season, and the best lodges, refuges, guided departures and even flights fill up long in advance. The scarcest resources, such as refuge spots on the Torres del Paine circuits, are the first to go.
Leaving it late often means compromising on the route, the dates or the accommodation you wanted, or missing out entirely. Early planning is the single most important step for a December trip, which is why working with an operator that secures the logistics ahead of time pays off.
December brings early-summer weather: warm by Patagonian standards, with daytime highs around 15 to 19°C (59 to 66°F), mild nights, and frequent long, sunny spells.
Wind is the defining feature, as December sits in the peak of the windy season, so expect strong gusts on exposed ridges, passes and lake shores. Showers still pass through but tend to be brief and to clear quickly.
Overall it is among the most reliable and comfortable weather of the year for hiking. Combined with the longest daylight of the season, Patagonia December weather gives you generous, flexible conditions — just plan the most exposed walking for the calmer morning hours.
December gets progressively busier through the month. The first part is lively but manageable, carrying the calmer energy of the early high season, while the second half, around Christmas and New Year, is among the most crowded of the year.
The main trails, viewpoints and towns see significant numbers over the holidays, and demand for accommodation and refuges is intense. Booking well ahead is essential to secure the itinerary you want.
If you would like the long days and warm weather with a little less bustle, consider early December before the holiday peak, or shift to a shoulder month like November or March for noticeably more space on the trails.
