The 10 most alternative cities in South America
Discover South America's top 10 alternative cities! From Valparaíso's vibrant streets to La Paz's high-altitude charm and Medellín's innovative spirit.
Castro Weather in September
Castro in September sees moderate temperatures, with highs around 14°C (57°F) and overnight lows of 4°C (39°F). Rainfall is fairly high at around 150 mm (5.9 in) on average, so pack waterproofs just in case.
Rainfall in Castro in September
Records from the past 30 years suggest around 7 days of rain, with 150 mm (5.9 in) average for the month. The rain this month tends to fall in heavier spells rather than light drizzle. When it rains, showers can be significant.
Temperature in Castro in September
September in Castro brings moderate temperatures, with highs of 14°C (57°F) and nights around 4°C (39°F). Conditions are often most pleasant around the middle of the day. With lows around 4°C (39°F), nights are cold. The upside is that cool, crisp nights are often the best for a deep sleep.For Castro itself, January and February generally stand out with the best circumstances. If you're seeking pleasant, dry and sunny weather somewhere else in the world, our weather planner can help you explore other options.
Castro Temperature in September
Min Temperature
4°C (39°F)
Max Temperature
14°C (57°F)
Chance of Rain
23%
Precipitation
150 mm (5.9 in)
Rainy days
7 days
Humidity
82% *
* Data from: Ancud, Chile (66 KM, 41 Miles).
Castro Weather by Month
Pick a month to see the average temperature, rainfall and sunshine in Castro - and find the best time to visit.
Historical weather records for Castro in September
Browse day-by-day weather records for Castro spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
Castro historical weather extremes in September
Based on 19 years of weather observations in Castro between 2006 and 2025, these are the recorded extremes.
- Castro recorded its highest September temperature of 22°C (72°F) on September 26, 2012.
- The coldest September day was on September 17, 2023, with a maximum of 7°C (45°F).
- The coldest night in September in Castro was on September 9, 2017, with a minimum of -2°C (28°F).
- The heaviest September precipitation occurred on September 20, 2024, when 51 mm (2 in) of precipitation fell.
Best Places in Chile in September
Find out more about the weather in Chile and which places have the best travel conditions in this month. See all of Chile in September →
perfect weather
pleasant
tolerable
unpleasant
poor
Perfect weather is subjective. On this map perfect weather has been defined with temperatures between 20°C (68°F) and 29°C (84°F) and not too much precipitation (less than 90 mm (3.5 in) a month).
What to Wear in Castro in September
The weather can be unpredictable in September, so pack clothes you can easily mix and match. You could bring jeans, other long pants, and a few t-shirts. A light jacket or light sweater will be pleasant for the cooler moments. Also bring a poncho, it will rain a lot! Waterproof everything you can.
What To Do in Castro in September
We rated the following activities from 1 (least suitable) to 10 (best) to do.
-
Cycling5/10 -
Walking5/10 -
Barbeque4/10 -
Camping3/10 -
Outdoor sports9/10
Castro 3-Day Forecast
More climate data for Castro
See the full Castro climate overview or explore weather in Chile.
Popular in September
Where to go in September - average daytime high across popular destinations.
San Pedro de Atacama
21°C (70°F) Hanga Roa
21°C (70°F) La Serena19°C (66°F) Santiago18°C (64°F) Viña del Mar16°C (61°F) Concón16°C (61°F) Valparaíso15°C (59°F) Pucón
13°C (55°F) Bucket list
Need travel inspiration? Check out our bucket list articles and be inspired.
The 10 most alternative cities in South America
Torres del Paine
Torres del Paine is an huge national park on the border with Argentina. It is possible to walk here along craters, high-rising mountain ridges, over glaciers and through vast majestic tundra.
Explore Patagonia
A tour through Patagonia brings you to the end of the world. That’s why Patagonia is a bucket list destination for many. We recommend to visit Patagonia from November to early March.
Enjoy the silence and peace in a spectacular landscape
This lodge guarantees privacy and exclusivity for those seeking to get away from mass tourism and enjoy the silence and peace in a spectacular landscape.