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Weather Guide: Chiloé Island

Detailed weather data for Chiloé Island: monthly temperatures, rainfall, wind, and a complete packing guide for every season.

Updated for 2025–2026 Season
8 min read
Climate: Cool Temperate OceanicElevation: Sea level to 200m
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Overview

Chiloé Island experiences a cool temperate oceanic climate, marked by significant rainfall throughout the year and moderate temperatures. Summers are mild and breezy, while winters are cool, wet, and can bring occasional snow to higher elevations. Strong winds are a constant companion, adding to the rugged Patagonian experience. Visitors should always be prepared for rapid weather changes, making layering essential.

Monthly Weather

January

Peak
19°
11°
15 rainy days|0 snow days|7.5 hrs sun|30 km/h

January is one of Chiloé's warmest and driest months, though 'dry' is relative with frequent rain showers still occurring. Days are long with good sunshine, making it ideal for outdoor exploration. Expect mild temperatures but always be ready for sudden shifts and strong Patagonian winds.

February

Peak
18°
10°
14 rainy days|0 snow days|7 hrs sun|28 km/h

February continues the pleasant summer weather, slightly cooler than January but still offering excellent conditions for visiting. Rainfall remains present, ensuring the island's lush green landscapes. Days are long and agreeable, perfect for exploring the churches and coastline.

March

High
16°
9°
17 rainy days|0 snow days|6 hrs sun|27 km/h

As autumn begins, temperatures start to drop, and rainfall increases. March still offers comfortable conditions for travel, with fewer crowds than peak summer. The landscape remains vibrant green, though mornings and evenings become noticeably cooler.

April

Moderate
13°
7°
20 rainy days|0 snow days|4.5 hrs sun|25 km/h

April sees a significant increase in rain and cooler temperatures, signaling the full onset of autumn. Days are shorter and more overcast. While still scenic, outdoor activities require more preparation for wet and potentially windy conditions.

May

Low
10°
5°
22 rainy days|1 snow days|3 hrs sun|25 km/h

May is characterized by cold, wet, and often windy weather. It's one of the rainiest months, with the possibility of occasional light snow, especially inland. Tourist numbers drop significantly, offering a solitary experience for those who don't mind the elements.

June

Low
8°
3°
23 rainy days|2 snow days|2.5 hrs sun|24 km/h

June marks the beginning of winter, bringing the coldest and wettest conditions. Days are short, overcast, and often experience heavy rainfall. Snow is more likely, especially away from the immediate coast. This is a time for indoor activities and experiencing Chiloé's cozy atmosphere.

July

Low
8°
2°
24 rainy days|2 snow days|2.5 hrs sun|24 km/h

July is the heart of winter, with the lowest temperatures and highest rainfall. Days are very short and often grey. While challenging for outdoor adventures, it offers a raw, authentic experience of Chiloé's wild side. Be prepared for harsh conditions and limited daylight.

August

Low
9°
3°
22 rainy days|1 snow days|3 hrs sun|25 km/h

August sees a slight improvement from July, with marginally longer days and a hint of spring approaching, though it remains cold and very wet. Rainfall is still substantial, and occasional snow is possible. It's a quiet time, appealing to those seeking solitude.

September

Low
11°
4°
20 rainy days|0 snow days|4 hrs sun|26 km/h

Spring begins in September, bringing slowly rising temperatures and longer days, though rainfall remains very high. The island starts to reawaken with lush greenery. Expect variable weather, where sunshine can quickly give way to showers and strong winds.

October

Moderate
13°
6°
18 rainy days|0 snow days|5 hrs sun|28 km/h

October is a transitional month, with a noticeable warming trend and increasing sunshine hours, although rainfall is still frequent. It's a good shoulder-season month to visit, offering fewer crowds and increasingly pleasant conditions for outdoor activities.

November

High
15°
8°
16 rainy days|0 snow days|6.5 hrs sun|29 km/h

November heralds the approach of summer, with milder temperatures, longer daylight hours, and reduced (but still significant) rainfall. The island is at its greenest, and conditions are generally good for exploring before the peak season crowds arrive.

December

Peak
17°
9°
16 rainy days|0 snow days|7 hrs sun|30 km/h

December marks the beginning of summer and the peak tourist season. Temperatures are pleasant, days are long, and sunshine hours are among the highest. While still prone to showers and strong winds, it offers some of the best weather for enjoying Chiloé's beauty.

Best Time to Visit

The best time to visit Chiloé Island is during the summer months, from December to February, when temperatures are mildest and sunshine hours are highest. The shoulder seasons of March and November also offer pleasant conditions with fewer crowds, making them excellent alternatives.

Worst Time to Visit

The worst time to visit is during the deep winter months, from June to August. During this period, the island experiences its lowest temperatures, shortest days, and heaviest rainfall, along with significant winds. Outdoor activities are limited, and conditions can be quite challenging.

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Weather Warnings

Strong Winds: Chiloé, like much of Patagonia, is subject to extremely strong and unpredictable winds year-round. These can reach gale force, making hats fly off, impacting hiking, and causing sudden chill.

Rapid Weather Changes: The weather on Chiloé can shift dramatically within hours, moving from sunshine to heavy rain and back again. Always be prepared for all four seasons in one day.

Heavy Rainfall: Chiloé is renowned for its high annual precipitation. Waterproof gear is not just recommended, it's essential regardless of the season.

UV Radiation: Despite often cloudy skies, UV radiation can be very high, especially during summer months. Sunscreen, hats, and sunglasses are vital to prevent sunburn.

Fog and Mist: Mornings can often be misty, particularly in coastal areas, affecting visibility on roads and trails.

Layering Guide

Dressing in layers is the golden rule for Chiloé Island. Start with a moisture-wicking base layer (synthetic or merino wool) to keep dry. Add an insulating mid-layer like a fleece or lightweight down jacket for warmth. Your outer layer must be a waterproof and windproof shell jacket and trousers, capable of withstanding heavy rain and strong gusts. Always carry a warm hat, gloves, and a scarf, even in summer, as temperatures can drop quickly. For footwear, waterproof hiking boots are highly recommended.

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