Santiago in December
In December, Santiago averages 30°C (86°F) during the day and 13°C (55°F) at night, with only about 1 rainy day.
High seasonConditions are warm and beach-friendly. Skies are generally dry and clear.
December is a great month to visit Santiago: pleasant temperatures and relatively few wet days.
How December compares to the rest of the year in Santiago
December is one of the warmest months in Santiago (2nd of 12) and one of the driest months (12th of 12). Daytime temperature runs 7°C above the annual average (23°C). December runs 3°C warmer than November (27°C) and stays flat into January.
December sunrise & sunset in Santiago
Times shown for Santiago local time (America/Santiago), calculated for the 15th of December. They shift by a few minutes day to day across the month.
Photography light in Santiago — December
Golden-hour and blue-hour windows for the 15th of December, in Santiago's local time. Use these for soft warm light (golden) or cool architectural twilight (blue).
📅 When to book — Santiago in December
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 December's tier (High season) and Santiago's popularity.
Crowds & pricing — December 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: comfortable tourism weather
Sun & mosquito risk — December 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 December weather
🌍 See the full ranked list of climate twins for Santiago in December →
Frequently asked questions
How hot is Santiago in December?
In December, Santiago averages a high of 30°C (86°F) and a low of 13°C (55°F) — generally hot.
Does it rain a lot in Santiago in December?
December is generally dry in Santiago, with about 1 rainy day on average.
Is December a good time to visit Santiago?
December is hot and mostly dry. It suits travelers who are comfortable with hot weather; check the month-by-month ranking to compare it against the rest of the year.
What should I pack for Santiago in December?
Pack lightweight, breathable clothing, sunglasses and sunscreen. See the full December packing list for Santiago for a complete, climate-based checklist.
Check the live 10-day forecast and sunrise/sunset.