Climate and monthly weather forecastCastro, Chile

The climate of Castro

Located in the second southernmost region of Chile, Castro experiences a marine west coast climate, designated as Cfb under the Köppen climate classification. This climatic zone denotes the warm summer pattern afflicting the area. Temperature swings throughout the year are moderate, with highs falling within the range of 9.3°C (48.7°F) in July to a yearly top of 17.6°C (63.7°F) seen in January and February. Nighttime temperatures vary from 5.6°C (42.1°F) in July to 10.9°C (51.6°F) in January and February.

Relative humidity prominently displays characteristic tendencies of coastal wet climates; between 79% in January and a peak value reaching 87% in June and August. Pertaining to wind conditions, the coastal exposure of Castro precipitates persistent winds, with yearly averages swinging from 13.4km/h (8.3mph) in January to a yearly high of 17.8km/h (11.1mph) in August. These wind speeds can occasionally spike, producing gusts reaching up to 27.6km/h (17.1mph), especially in August.

Rainfall predominates Castro's climate with all months registering numerous wet days. The months from April to August weather the heaviest rainfall, with July sitting at a peak of 124mm (4.88"). The fewer rainy days are experienced from January to March, but with January still showing a good deal of precipitation at 37mm (1.46"). Alongside the rainfall, there is a significant amount of cloud cover year-round, ranging from 44% in January to a yearly high of 64% in June and August.

The best time to visit Castro

For warmth and long days of sunshine, the best time to visit Castro is between December and February. Sunshine hours reach between 6 in December to 7.4 in February, and temperatures range from a low of 9.7°C (49.5°F) to a high of 17.6°C (63.7°F). Despite being the wetter part of the year, rainfall is comparatively less with averages from 68mm (2.68") in December to 37mm (1.46") in February, the least in the year.

The worst time to visit Castro

Due to the increasing frequency of rain and wind, it is less advisable to visit Castro between April and August. During these months, rainfall heightens, with averages far surpassing 100mm (3.94") between April and August. Moreover, wind conditions intensify, with average wind speed increasing to 17km/h (10.6mph). Combined with decreased daylight hours and cooler temperatures, traveling during this season may prove somewhat challenging.

Spring weather in Castro

Castro's spring, from September to November, sees slowly rising temperatures from 10.5°C (50.9°F) in September to 13.5°C (56.3°F) in November. Although this season experiences an increase in rainfall from 65mm (2.56") in September to 74mm (2.91") in November, it also brings an increase in daylight hours. Sunshine hours increase as well from 5.4 in September to 6 in November.

Summer weather in Castro

The summer months in Castro, which fall between December and February, are mildly warm, with temperatures rising and falling between 15.6°C (60.1°F) to 17.6°C (63.7°F). This is the season with the most sunshine, tallying from 6 hours in December to a yearly high of 7.4 hours in February despite considerable cloud cover ranging from 55% in December to 44% in February. January, despite being a summer month, sees 14.9 days of rainfall accumulating to 37mm (1.46").

Autumn weather in Castro

Autumn in Castro profoundly sees a transition from the milder summer months into the colder, wetter months of the year. Between March and May, temperatures fall from 16°C (60.8°F) in March to 11.8°C (53.2°F) in May. The months of April and May contend with significant rain, soaring as high as 88mm (3.46") and 126mm (4.96") respectively.

Winter weather in Castro

Winter months of June through August in Castro are highly rainy, with rainfall peaking at 124mm (4.88") in June. Temperatures during this period hover at a low point from 9.3°C (48.7°F) in July to 9.6°C (49.3°F) in August. Despite the average daily temperature only varying slightly, a considerable drop in daylight hours is felt from 9.1 hours in June to a minimal 9.4 hours in July. However, this also aligns with the highest monthly average relative humidity of 87% in June and August, emphasizing the typical damp, cool winter conditions inherent in a Cfb climate zone.

Weather in January

January weather in Castro, Chile is characterized by mild temperatures and substantial rainfall. Temperatures are relatively high in January, with an average high of 17.6°C (63.7°F) serving as the backdrop for the plentiful rainfall occurring on approximately half the days. Weather in January »

Weather in February

Weather in February in Castro is quite similar to January in several key ways. Average temperatures and rainfalls remain more or less constant, with a slightly increased tendency for rain. While February experiences less daylight than its predecessor, the month compensates with slightly more sun-soaked days. Weather in February »

Weather in March

March ushers in a noticeable change in Castro’s climate. During this month, the average high temperature decreases to 16°C (60.8°F), and the percentage of cloud cover rises. The winds take a slight respite, dipping to 12.8km/h (8mph) on average. Weather in March »

Weather in April

April in Castro witnesses a shift from the light, mild climate of March. This shift is characterized by a decrease in temperature, an increase in cloud cover leading to less sunshine, and stronger winds with average speeds of 13.2km/h (8.2mph). Weather in April »

Weather in May

May is typically the start of the colder seasons in Castro. Compared to previous months, May is marked by a pronounced decrease in average temperatures and an increase in rainfall. Humidity peaks to 86%, and the cloud cover significantly increases, leading to fewer hours of sunshine. Weather in May »

Weather in June

June in Castro is a month of shorter days and lower temperatures. This period sees a further dip in temperature from May, accompanied by an impressive amount of rainfall over the number of days. Despite the chillier weather, the city is not lethargic, with the number of rain hours not far deviating from the rest of the year. Weather in June »

Weather in July

July accentuates the trend of colder, wetter conditions ongoing in Castro since the past few months. Key weather parameters such as rainfall, wind speed, and cloud cover are all at their highest levels with the wind gusts klipping at a brisk 26.9km/h (16.7mph). Weather in July »

Weather in August

August is still deep within the throes of winter in Castro. The maximum temperature begins to crawl upward slightly to 9.6°C (49.3°F), but the nights are arguably cold with the mercury dropping to 5.8°C (42.4°F). Extended rainfall in August contributes to the high levels of humidity. Weather in August »

Weather in September

September acts as a transitionary phase from the chills of winter to the mildness of spring in Castro. There’s a slight upswing in the mean temperatures and a downtick in the amount of rainfall, providing a breather before the rainy season returns in earnest. Weather in September »

Weather in October

October in Castro is characterized as a mild month, with increasing temperature and a tendency towards clearer skies. The arrival of October marks a shift towards warmer days and cooler nights. The rainfall value decreases to 79mm (3.11"). Weather in October »

Weather in November

November in Castro, Chile is a period of swiftly changing weather conditions. It sees a further increase in temperatures, while the duration of daylight increases - a welcome addition for the outdoor enthusiasts who take to Castro’s green spaces. Weather in November »

Weather in December

A significant surge in the maximum temperature to 15.6°C (60.1°F) marks December in Castro. It is accompanied by a similar rise in the minimum temperature, and a corresponding increase in rainfall. This time of the year, weather continues to be a mixed bag with longer daylight hours, more sun, and an increased UV index of 4. Weather in December »