Weather in Castro

Planning your day in Castro? Here you will find the most up-to-date information on weather conditions, including charts and a detailed forecast.

The climate in Castro can be described as temperate maritime, characterized by its mildness and lack of extreme temperatures. Thanks to its location on an island, there is no sweltering heat or severe frost here. The weather generally remains cool and fresh throughout the year, creating ideal conditions for those who prefer comfortable coolness to the scorching sun.

Seasonal differences here are smooth but noticeable. Summer (from December to March) is the most pleasant time for a trip: the air warms up to an average of 13–15°C, and maximum temperatures can reach 19°C. Winter (from June to August) is cooler, with average values around 6–7°C. A characteristic feature of the winter period is the large number of cloudy and rainy days — precipitation falls on more than 20 days per month.

Travelers should note that humidity and rain are constant companions of the weather in this region of Chile. Even in the "driest" summer months, the number of days with precipitation remains significant (from 8 to 11 days). Therefore, when planning a visit to Castro, be sure to bring a high-quality raincoat and waterproof footwear, regardless of the time of year.

The climate in Castro is distinguished by its mildness and the absence of extreme temperature spikes, making it comfortable to visit if you prefer coolness over exhausting heat. The warmest period of the year is the Southern Hemisphere summer months — January and February. At this time, the average daytime temperature holds at a pleasant mark of around 14–15°C. Maximum readings in February can reach 19.4°C, creating ideal conditions for long walks around the city and its surroundings without the risk of overheating.

The winter season, lasting from June to August, brings noticeable cooling, although severe frosts are a rarity here. The coldest month is usually July, when the average temperature drops to 6.3°C. During the day, the air warms up to only 8–9°C, and nights become quite chilly with minimums around 3.8°C. Travelers planning a trip at this time will definitely need warm windproof clothing.

It is also worth considering daily temperature fluctuations, which are especially noticeable in the warm season. In summer, the difference between the daytime maximum and nighttime minimum is about 9 degrees, so even after a warm sunny day, the evening may require a light jacket or sweater. In winter, the temperature regime becomes more even, and the range of fluctuations decreases to 5 degrees, maintaining a stable coolness throughout the day.

Precipitation in Castro is an integral part of the local climate, shaping the lush green landscapes of Chiloé Island. It rains here throughout the year, so tourists should be prepared for changeable weather regardless of the travel date. Snow falls extremely rarely due to the mild oceanic influence, so the main type of precipitation is rain, varying from light drizzle to more intense downpours.

The wettest season falls during the Southern Hemisphere winter months. From May to August, the sky is often covered with clouds, and the frequency of precipitation reaches its peak. The "wettest" months are June and August, when up to 22 rainy days per month are recorded. This time of year requires a good raincoat and waterproof shoes.

A relatively dry season arrives in summer, in January and February. During this period, the intensity of precipitation noticeably decreases, and the number of rainy days drops to 8–11 per month. February is statistically the most favorable month with the fewest rainy days, making it the best time for hiking and viewing the city's famous wooden structures.

The weather in Castro, as on the entire island of Chiloé, is known for its variability, so the main rule when packing your suitcase will be the principle of layering. Even in the warmest months, January and February, the temperature rarely rises above +19°C, so light T-shirts should definitely be complemented with warm sweaters, fleece jackets, and long trousers. This approach will allow you to feel comfortable both during sunny walks and on cool evenings when the air becomes fresh.

Given the high humidity and frequent precipitation throughout the year, be sure to take high-quality waterproof clothing with you. This is especially relevant for the period from May to August, when the number of rainy days exceeds 20 per month. A reliable raincoat or windbreaker with a hood will protect you better than an umbrella, which can be useless during strong gusts of wind. For walking around the city and surroundings, choose comfortable trekking shoes with water-repellent treatment.

Accessories should be selected depending on the season of the trip. If you are heading to Chile in summer, do not forget sunglasses and cream with high SPF: despite the coolness, the sun here can be very active. For a winter trip (June–August), be sure to stock up on a hat, scarf, and gloves, as the average temperature holds around +6...+7°C, and the damp ocean wind significantly enhances the sensation of cold.