2026 Climate Averages

Weather: Santiago — September

Conditions are pleasant for sightseeing, though you might encounter occasional showers.

👍 Climate Overview

September is a good time to visit Santiago. Warm weather with highs of 20°C—great for outdoor activities. Temperatures vary significantly between day and night—layering is recommended. Being off-peak, you'll find better deals and fewer crowds.

8.3
GoTripzi Score Great

Based on weather comfort, crowds, prices, and activity options

Avg High

20°C

Avg Low

6°C

Rainy days

6days

Daylight

11.8h

Rainfall

42mm

Sunshine

9.7h/day

Humidity

67%

Humid
Sun Strength

7.6

Very High
Wind

10 km/h (gusts 24)

Is September a good time to visit Santiago?

Conditions are pleasant for sightseeing, though you might encounter occasional showers.

Now

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Feels like --
Wind --
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Local time —

Air Quality

Travel Context

  • Crowds
    Moderate
  • Travel Costs Shoulder Rates

Daylight

Sunrise

07:44

Sunset

19:34

11.8h daylight

Visiting Santiago in September: Pros & Cons

Pros

  • Comfortable temperatures for sightseeing
  • Abundant sunshine for beach and outdoor fun
  • Fewer crowds and better hotel deals

Things to Do in September

Events & Festivals

🎊
Fiestas Patrias (Independence Day)
September 18–19 Holiday

Recommended for This Weather

🚶 Walking tours & sightseeing
🚲 Cycling & bike tours
🥾 Hiking & nature trails
🍜 Food tours & culinary experiences
🎭 Cultural tours & local experiences

Santiago Weather by Month

Month Avg High Avg Low Rain Sunshine Humidity UV Index Crowds Condition
Jan 30°C 15°C 1d (10mm) 13.1h
55% Moderate
12 Extreme
Good
Feb 30°C 15°C 0d (2mm) 12.3h
55% Moderate
11.7 Extreme
Good
Mar 28°C 14°C 1d (3mm) 11.3h
56% Moderate
9.6 Very High
Excellent
Apr 24°C 10°C 2d (15mm) 9.9h
59% Moderate
6.8 High
Excellent
May 19°C 6°C 4d (40mm) 8.1h
64% Moderate
4.8 Moderate
Good
Jun 16°C 5°C 8d (116mm) 6.6h
70% Humid
3.4 Moderate
Good
Jul 17°C 4°C 5d (53mm) 7.8h
66% Humid
4.2 Moderate
Good
Aug 17°C 5°C 8d (99mm) 8.6h
69% Humid
5.5 High
Good
Sep Current 20°C 6°C 6d (42mm) 9.7h
67% Humid
7.6 Very High
Good
Oct 23°C 9°C 4d (23mm) 11.4h
62% Moderate
10.1 Extreme
Excellent
Nov 26°C 11°C 2d (11mm) 12.6h
60% Moderate
11.9 Extreme
Excellent
Dec 29°C 14°C 1d (4mm) 13.1h
55% Moderate
12 Extreme
Good

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Your Best MonthJanScore: 8.4
1.Jan
8.42.Feb
7.43.Dec
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6.55.Aug
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68.Mar
5.69.Sep
5.610.Nov
5.611.Apr
5.212.Oct
5.2

Where to Stay

See hotels, apartments & rentals around Santiago – live prices from Booking.com, Expedia, Vrbo and more

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Santiago

Andean capital with viewpoints and wine valleys nearby. Discover San Cristóbal Hill.

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What to Pack for September

Dress in layers — a mix of long sleeves, light sweaters, and a versatile jacket works best for changeable conditions. Temperatures drop significantly at night, so pack layers you can add or remove throughout the day. Pack a compact umbrella or light rain jacket for occasional showers. Don't forget a wide-brimmed hat and high-SPF sunscreen — the sun is strong.

Moderate Moderate

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📋Essentials
👕Clothing
👟Footwear
🎒Accessories
🧴Toiletries & Health

Planning a trip to Santiago?

💰 Off-peak — great deals available now

Frequently Asked Questions

Is September a good time to visit Santiago?
September is typically good for visiting Santiago, with average highs of 20°C and around 6 rainy days. Plan your activities accordingly—outdoor sightseeing is best on dry days, while rainy days are perfect for museums and indoor attractions.
Does it get cold at night in Santiago in September?
Nights in Santiago during September are cool at around 6°C. Bring a jacket or sweater for evenings, especially if you plan to dine outdoors or take evening walks. The temperature drop from day to night can be noticeable.
What should I pack for Santiago in September?
With highs of 20°C and lows of 6°C in September, we recommend: Warm layer for evenings, Compact umbrella, Comfortable walking shoes. Layering is key as temperatures can vary between air-conditioned interiors and outdoors. Comfortable walking shoes are essential for cobblestone streets.
Does it rain a lot in Santiago in September?
Santiago typically sees around 6 rainy days in September. Rain is usually in the form of brief showers rather than all-day downpours, so a compact umbrella is sufficient. Mornings tend to be drier, making them ideal for outdoor sightseeing.
How many hours of daylight are there in Santiago in September?
In September, Santiago gets approximately 11.8 hours of daylight per day. This affects how much sightseeing you can fit in—longer days mean more time for outdoor activities, while shorter days are perfect for cozy museum visits and early dinners.
Is September peak season in Santiago?
No, September is not peak season in Santiago. Expect better value on accommodation, shorter queues at attractions, and fewer tourists at popular spots. This is an excellent time to experience the city like a local and enjoy a more authentic atmosphere.

Weather Data: Based on 2020–2025 historical climate data from Open-Meteo

Solar calculations: SunCalc (timezone: America/Santiago)

Last Updated: February 2026

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