Osorno Weather in September
September in Osorno brings moderate temperatures, with daytime highs of 14°C (57°F) and nights around 4°C (39°F). Quite a bit of rainfall is expected, around 132 mm (5.2 in), so pack an umbrella.
Rainfall in Osorno in September
You can expect rain on around 8 days based on historical patterns, with 132 mm (5.2 in) average for the month. When it rains this month, it tends to come down fairly heavily. Showers can be substantial even if they don't last all day.
Temperature in Osorno in September
If you're visiting Osorno in September, expect highs of 14°C (57°F) and overnight lows around 4°C (39°F). A light jacket or extra layer can be useful, especially outside the warmest hours of the day. At 4°C (39°F) overnight, it gets properly cold after dark. On the bright side, cold nights tend to make for excellent sleeping conditions.If you prefer dry days with pleasant temperatures, January, February, March and December typically offer 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.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit Chile, check out our Osorno's climate page.
Osorno Temperature in September
Min Temperature
4°C (39°F)
Max Temperature
14°C (57°F)
Chance of Rain
25%
Precipitation
132 mm (5.2 in)
Rainy days
8 days
Humidity
74%
Historical weather for Osorno in September
Browse day-by-day weather records for Osorno spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
Osorno historical weather extremes in September
According to our 21 years of weather records for Osorno, the following extremes were recorded between 2004 and 2025.
- On September 25, 2012, temperatures climbed to 24°C (75°F), marking the warmest September day on record.
- The lowest daytime temperature in September was 5°C (41°F), recorded on September 16, 2022.
- Nighttime temperatures dropped to -3°C (27°F) on September 3, 2006, marking the coldest September night on record.
- Peak precipitation in September occurred on September 1, 2017, when 45 mm (1.8 in) of precipitation was measured.
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
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What to Wear in Osorno in September
Pack for changing conditions in Osorno in September. Bring a mix of short and long sleeves, a warm layer like a hoodie or light jacket, and comfortable pants. The key is being able to add or remove layers as the days goes by. Prepare for significant rainfall with proper waterproof clothing and shoes.What To Do in Osorno in September
We rated the following activities from 1 (least suitable) to 10 (best) to do.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit Chile, check out our Osorno's climate page.
See the full Osorno climate overview or explore weather in Chile.
