Vejret i Torres del Paine (Patagonia) i december

December is Patagonian summer — among the least cold months of the year here — but the forum is unanimous that temperature is not what makes Torres del Paine hard. Summer is the windiest season, and one trip report describes four consecutive days delivering clear sky and high sun, 80mph winds, snow, hail and rain. The averages shown here read cold and snowy even in December because they cover exposed high terrain rather than only the valley trails, and that is the honest picture: it is the wind that makes you cold. Regulars pack a fleece hat or Buff for exactly that, note most campgrounds sit somewhat sheltered, and reckon the exposed sections feel far worse than the actual risk. The days are very long.

Torres del Paine-forum threads on visiting in May describe this as genuinely the start of winter here, posters calling cooler temperatures and real accumulation both increasingly likely from this point in the season. Regulars call Hotel Las Torres closed for the season by May, the shuttle from the Amarga entrance no longer running, a real hour-and-a-half walk replacing it. Posters describe mornings as typically clearer with afternoon cloud building, sunrise arriving notably late around nine. Regulars call real wind gusts still a factor this late in the season, some reports of considerably stronger gusts than a typical summer day. Posters recommend checking current forecasts closely rather than assuming a typical May. Regulars call the park genuinely quieter by May, a real upside for anyone comfortable with the colder, less predictable conditions. The record: 0.8C days feeling like -2C, -3.4C nights, an extraordinarily high 191.7mm across nearly 19 days and 89 percent humidity.

Torres del Paine-forum threads on trekking the O Circuit in March describe conditions as capable of real four-seasons-in-a-day swings, posters calling snow always a possibility regardless of the calendar date. Regulars recommend checking the forecast every two or three days rather than trusting anything issued further out. Posters call proper rain pants and a quality rain jacket non-negotiable, wind gusts capable of arriving suddenly even on a calm day. Regulars describe a cold-rated sleeping bag and an insulated pad as standing gear for the refugios, nights genuinely cold regardless of how the day felt. Posters call March still viable for the full circuit, fewer crowds than peak January-February a real upside for less predictable conditions. Regulars recommend real flexibility built into the itinerary given how fast plans can change. The record: 6.2C days feeling like 3C, 0.3C nights, an extraordinarily high 270.6mm across over 23 days and 84 percent humidity.

Torres del Paine-forum threads comparing April against May describe both as sitting well past the summer crowds, precipitation climbing noticeably compared to February and posters calling the shift toward colder, cloudier autumn real by this point. Regulars describe specific April reports as genuinely mixed, some stretches bringing just a day or two of real weather across a week while others see more sustained systems. Posters call one date change worth knowing, guided groups becoming mandatory on the W trek starting the first of May, a reason some target April instead. Regulars call refugios generally easier to book this time of year, camping capacity less of a bottleneck. Posters recommend real cold-weather and waterproof gear, Patagonian wind genuinely unpredictable any time of year. Regulars call the shoulder-season quiet worth it for many visitors. The record: 3.5C days feeling like 0C, -1.6C nights, an extraordinarily high 240.2mm across over 21 days and 87 percent humidity.

Torres del Paine-forum threads on January conditions are consistent this counts as the park's warmest window of the year, though posters add that doesn't mean mild - strong wind is a near-constant feature, and genuinely wintry conditions including snow remain entirely possible even at the height of summer. One regular describes rain, wind, snow and a clear sunny stretch all as plausible within a single 24-hour window here. The upside is daylight stretching to nearly 11pm, real flexibility for long trekking days on the W or O circuits. Regulars call proper layering for every condition non-negotiable regardless of how favorable the seasonal averages look on paper, since forecasts here are treated as unreliable beyond a day or two out. The record: a frigid 7.4C by day dropping to 1.1C at night, an extraordinarily high 271mm across nearly 24 days, a notably high 26.6cm of fresh snowfall and 81 percent humidity.