Santiago in August
In August, Santiago averages 17°C (63°F) during the day and 5°C (41°F) at night, with around 6 days of rain (60 mm total).
High seasonConditions are cool — bring a jacket for evenings. Occasional showers are likely but won't dominate.
August in Santiago is outside the typical sweet spot for sightseeing weather. It can still be a great time to visit if you have specific reasons (festivals, off-season pricing, etc.).
How August compares to the rest of the year in Santiago
August is one of the coolest months in Santiago (10th of 12) and one of the wettest months (3rd of 12). Daytime temperature runs 6°C below the annual average (23°C). August runs 2°C warmer than July (15°C) and warms a further 3°C into September (20°C).
August sunrise & sunset in Santiago
Times shown for Santiago local time (America/Santiago), calculated for the 15th of August. They shift by a few minutes day to day across the month.
Photography light in Santiago — August
Golden-hour and blue-hour windows for the 15th of August, in Santiago's local time. Use these for soft warm light (golden) or cool architectural twilight (blue).
📅 When to book — Santiago in August
Travel writers usually only tell you when to go. Here's when to book flights and lodging for the best mix of price and availability, based on August's tier (High season) and Santiago's popularity.
Crowds & pricing — August in Santiago
This is a busy month in Santiago — not the absolute peak, but tourist numbers are clearly elevated. You'll feel it at headline attractions on weekends and in the historic centre, though side streets and lesser-known sights stay manageable. Prices are above off-season but not at their summit. A good week for first-time visitors who want everything open without the worst of the crush.
Why this tier: excellent tourism weather
Sun & mosquito risk — August in Santiago
UV is a clear-sky sea-level estimate — clouds, altitude, and reflective surfaces (snow, water) shift it ±30%. Mosquito risk is climate-derived only; for current disease advisories (dengue, malaria, zika) check the CDC or WHO travel pages before your trip.
Santiago in other months
| Month | Avg high | Avg low | Rainfall | Rain days | Snow days |
|---|---|---|---|---|---|
| January | 30°C / 86°F | 14°C / 57°F | 1 mm | 1 | 0 |
| February | 29°C / 84°F | 13°C / 55°F | 5 mm | 1 | 0 |
| March | 27°C / 81°F | 12°C / 54°F | 5 mm | 2 | 0 |
| April | 23°C / 73°F | 9°C / 48°F | 15 mm | 3 | 0 |
| May | 19°C / 66°F | 7°C / 45°F | 50 mm | 5 | 0 |
| June | 15°C / 59°F | 5°C / 41°F | 80 mm | 7 | 0 |
| July | 15°C / 59°F | 4°C / 39°F | 75 mm | 8 | 0 |
| August | 17°C / 63°F | 5°C / 41°F | 60 mm | 6 | 0 |
| September | 20°C / 68°F | 7°C / 45°F | 35 mm | 4 | 0 |
| October | 23°C / 73°F | 9°C / 48°F | 15 mm | 3 | 0 |
| November | 27°C / 81°F | 11°C / 52°F | 10 mm | 2 | 0 |
| December | 30°C / 86°F | 13°C / 55°F | 5 mm | 1 | 0 |
Other cities with similar August weather
🌍 See the full ranked list of climate twins for Santiago in August →
Frequently asked questions
How hot is Santiago in August?
In August, Santiago averages a high of 17°C (63°F) and a low of 5°C (41°F) — generally mild and pleasant.
Does it rain a lot in Santiago in August?
August sees occasional rain in Santiago, with about 6 rainy days on average.
Is August a good time to visit Santiago?
August is mild and pleasant. It suits travelers who are comfortable with mild and pleasant weather; check the month-by-month ranking to compare it against the rest of the year.
What should I pack for Santiago in August?
Pack a warm jacket and layers. See the full August packing list for Santiago for a complete, climate-based checklist.
Check the live 10-day forecast and sunrise/sunset.