Santiago

Chile Weather in September

Average temperatures, rainfall, sunshine and the best places to visit in Chile in September.

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Santiago Viña del Mar San Pedro de Atacama Pucón

Planning a getaway to Chile this September and curious about the weather you should prepare for? Discover all the vital details you need on this page, solving your puzzle:

What to Expect in Chile in September

Chile offers a broad spectrum of weather patterns. In September, one might encounter temperatures that range from cold to warm, and precipitation levels ranging from almost none to heavy.

Temperatures

The average highest temperatures fluctuate between cold in Valle Nevado at 4°C (39°F) to warm in Pica at 26°C (79°F). Nighttime temperatures generally drop to 12°C (54°F) in Pica and -6°C (21°F) in Valle Nevado.

To learn more about the conditions in specific areas of Chile, check out the map below.

Precipitation

In September, precipitation varies across different areas. From almost no rainfall in Pica with an average of 0.5 mm (0.02 in) to heavy rainfall in Chaitén with 374 mm (15 in).

Average sunshine

Most places get a reasonable amount of sunshine. Take Santiago as an example - it receives around 186 hours of sunlight, offering a nice mix of sunny and partly cloudy days. Want to compare this with brighter destinations? Try our weather planner to explore your options.

Explore Chile by month

Pick a month to see the average temperature, rainfall and sunshine in Chile - and find the best time to visit. (based on Santiago)

January28°C (82°F) February28°C (82°F) March26°C (79°F) April22°C (72°F) May18°C (64°F) June15°C (59°F) This monthJuly14°C (57°F) August16°C (61°F) September18°C (64°F) October21°C (70°F) November24°C (75°F) December26°C (79°F)
Best Time to Visit Chile →

Best Places to Visit in Chile in September

Click on a destination dot for more details. Toggle the map to compare temperatures or precipitation across Chile.

Conditions Temperatures Precipitation
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).

Popular Destinations in Chile

What is the weather like in September for some of the most popular destinations in Chile?

Temperature range in Chile (September)

Precipitation variation in Chile (September)

Santiago

In September Santiago generally has moderate temperatures with maximum daytime temperatures around 18°C (64°F), minimum nighttime temperatures around 5°C (41°F) and moderate monthly rainfall. So on average the conditions are very good that month.

« August
September
October »
August
September
October
Max temperature
16°C (61°F)
18°C (64°F)
21°C (70°F)
Min temperature
3°C (37°F)
5°C (41°F)
7°C (45°F)
Monthly sun hours
161 hours
186 hours
205 hours
Monthly rainfall
90 mm (3.5 in)
72 mm (2.8 in)
56 mm (2.2 in)
Monthly rainy days
3 days
4 days
3 days
Weather conditions
good
very good
excellent
Climate in Santiago →

Viña del Mar

In September Viña del Mar generally has moderate temperatures with maximum daytime temperatures around 16°C (61°F), minimum nighttime temperatures around 10°C (50°F) and low monthly rainfall. So on average the conditions are very good that month.

« August
September
October »
August
September
October
Max temperature
15°C (59°F)
16°C (61°F)
17°C (63°F)
Min temperature
9°C (48°F)
10°C (50°F)
11°C (52°F)
Monthly sun hours
119 hours
147 hours
171 hours
Monthly rainfall
57 mm (2.2 in)
29 mm (1.1 in)
15 mm (0.6 in)
Monthly rainy days
3 days
3 days
2 days
Weather conditions
good
very good
very good
Climate in Viña del Mar →

La Serena

In September La Serena generally has pleasant temperatures with maximum daytime temperatures around 19°C (66°F), minimum nighttime temperatures around 10°C (50°F) and low monthly rainfall. So on average the conditions are excellent that month.

« August
September
October »
August
September
October
Max temperature
18°C (64°F)
19°C (66°F)
21°C (70°F)
Min temperature
9°C (48°F)
10°C (50°F)
11°C (52°F)
Monthly sun hours
173 hours
173 hours
171 hours
Monthly rainfall
16 mm (0.6 in)
6.2 mm (0.2 in)
5.2 mm (0.2 in)
Monthly rainy days
a single day
a single day
a single day
Weather conditions
excellent
excellent
excellent
Climate in La Serena →

Valparaíso

In September Valparaíso generally has moderate temperatures with maximum daytime temperatures around 15°C (59°F), minimum nighttime temperatures around 10°C (50°F) and low monthly rainfall. So on average the conditions are very good that month.

« August
September
October »
August
September
October
Max temperature
15°C (59°F)
15°C (59°F)
16°C (61°F)
Min temperature
9°C (48°F)
10°C (50°F)
11°C (52°F)
Monthly sun hours
119 hours
147 hours
171 hours
Monthly rainfall
59 mm (2.3 in)
30 mm (1.2 in)
15 mm (0.6 in)
Monthly rainy days
3 days
3 days
2 days
Weather conditions
good
very good
very good
Climate in Valparaíso →

Pucón

In September Pucón generally has moderate temperatures with maximum daytime temperatures around 13°C (55°F), minimum nighttime temperatures around 3°C (37°F) and heavy monthly rainfall. So on average the conditions are less favorable that month.

« August
September
October »
August
September
October
Max temperature
10°C (50°F)
13°C (55°F)
15°C (59°F)
Min temperature
2°C (36°F)
3°C (37°F)
5°C (41°F)
Monthly rainfall
378 mm (15 in)
243 mm (9.6 in)
214 mm (8.4 in)
Monthly rainy days
10 days
8 days
6 days
Weather conditions
less favorable
less favorable
less favorable
Climate in Pucón →

Is your destination not in the list? Have a look at all destinations in Chile.

Popular cities in September

Day & night temperatures, rainfall and average weather in Chile in September.

City Weather Day temp Night temp Rainfall
Santiago 18°C (64°F) 5°C (41°F) 72 mm (2.8 in)
Viña del Mar 16°C (61°F) 10°C (50°F) 29 mm (1.1 in)
San Pedro de Atacama 21°C (70°F) 4°C (39°F) 1 mm (0.04 in)
Pucón 13°C (55°F) 3°C (37°F) 243 mm (9.6 in)
Hanga Roa 21°C (70°F) 18°C (64°F) 80 mm (3.1 in)
Valparaíso 15°C (59°F) 10°C (50°F) 30 mm (1.2 in)

Chile weather in September: frequently asked questions

What is the weather like in Chile in September?

Expect very good weather across Chile in September. The popular destination of Santiago averages 18°C (64°F) by day and 5°C (41°F) at night during this month.

What is the average temperature in Chile in September?

Average temperatures in Chile during September range from a nighttime low near 5°C (41°F) to a daytime high around 18°C (64°F) in Santiago.

Does Chile get a lot of rain in September?

Rain is generally moderate to light in Chile during September, with Santiago averaging close to 72 mm (2.8 in).

Is September a Good Time to Visit Chile?

In our opinion, September is a good time to visit Chile with overall very good weather in Santiago. However, the weather conditions may vary depending on your destination.

Generally speaking, the best visiting conditions can be found in January, February, March, April, October, November and December offering mostly excellent weather in Santiago. On the other hand, the month of June tends to have mixed weather conditions.

Interested in more climate information?

We have much more information about the climate in Chile.

Weather and climate has detailed information for every country in the world. Are you going to Chile? Get detailed historical weather averages for many cities in Chile.

Not sure yet where to go? We now have a tool which recommends destinations that suit your ideal travel conditions. Find out where to go with our weather planner.

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