Santiago weather in April

April in Santiago: warm, a little rain, with poor air quality — fine if you can take poor air.

Updated September 2026 · climate normals from ERA5 reanalysis

Santiago🇨🇱 Chile · Central Chile & Mendoza · City86
  1. 89Jan
  2. 87Feb
  3. 88Mar
  4. 86Apr
  5. 77May
  6. 66Jun
  7. 70Jul
  8. 74Aug
  9. 83Sep
  10. 91Oct
  11. 92Nov
  12. 88Dec

#7 of 12 months in Santiago · #333 of 1413 destinations to visit in April · comfort 86/100 (tier A)

Days
25°C
Nights
8°C
Wet days
3
Sun
9.6 h
Humidity
57%
Daylight
11 h
Santiago, Chile
Photo: Matheus Triaquim · Pexels

What April is like in Santiago

Autumn: clear warm days, cold nights and colour in the parks. One of the best months of the year here.

harvestshoulder

confidence: high

Traveller notes on Santiago in April

Notes from nearby Valle Nevado (39 km away)

Santiago doesn't have its own notes for April yet — these are about Valle Nevado, close enough to share the season.

Valle Nevado-forum threads on timing a ski trip call July genuinely the best month for cover though also the most crowded, posters describing August as still a solid choice if the season's snow holds. Regulars call April itself well ahead of the resort's typical opening, real skiing here not usually starting until cover builds later. Posters recommend checking the resort's own season announcement before booking an April trip, opening dates varying year to year with how early real cover arrives. Regulars call nearby La Parva and El Colorado reasonable alternatives to compare when planning a Chilean ski trip. Posters recommend real cold-weather layers regardless of exact timing, the Andes delivering genuinely sharp temperature drops after dark before the season opens. Regulars call the drive up from Santiago worth doing for the views alone, regardless of whether lifts are running yet. The record: 9C days feeling like 6C, 0.9C nights, 62.2mm across over 7 days and 56 percent humidity.
ValleNevadoAprilRegular · April · 1 month ago · about Valle Nevado · Read more on Tripadvisor ↗

Other months in Santiago

Regulars are specific this counts as the highest tourist season of the year across the whole country, a real booking-and-pricing concern rather than just a weather note - rooms and flights genuinely scarcer without planning ahead. Our row backs that hot, genuinely dry read, 30.7C reading as a hot 32C, over 13.2C nights, with rain essentially absent, 2.1mm across under a day, and humidity down to 54 percent. Regulars are consistent evenings cool noticeably after a hot day, a light coverup or sweater worth having even mid-summer. Nearby coastal towns are a popular escape from the heat, sea temperatures cool enough to refresh without being warm enough for a long swim. The record: 12.3 hours of sun, a 12.4 kph wind and AQI 102.
PeakSeasonMeansBookAheadNotJustPackLight · February · 1 month ago · Read more on Tripadvisor ↗
December is summer here and the board describes it as one long dry day with a cold end: around 30C in the afternoon, low twenties by ten at night, cooler again before dawn. Our row is that swing written as two numbers, 30C over 11.6C - an eighteen-degree range inside a single date. At 53.6 percent humidity the heat is dry, so a step into the shade cools you immediately, but the sun is strong enough that finding shade is the whole trick. Rain is 6.5mm across not quite one day. Most evenings want a sweater, and hotels are air conditioned where apartments often are not. The smog the board argues about belongs to winter: AQI 75 here against 138 in July. The record: 13.1 hours of sun.
ThirtyByThreeSweaterByTen · December · 1 month ago · Read more on Tripadvisor ↗
March is autumn here and regulars rate it highly - exceptional weather without the summer crowds and without summer prices, still warm, with a wide gap between day and night. Our row is that gap exactly: 28.8C down to 11.1C, at 53 percent humidity and 3.1mm of rain across a single day. On the city's other reputation they are specific rather than dismissive: the smog is not usually bad in the eastern districts, is worst out west towards the airport, gets better on wet days, and turns on the weather rather than the season. Our AQI of 102 is a city-wide average and hides all of that. The record: 11.3 hours of sun and an 11.3 kph wind.
TheSmogHasAGeography · March · 1 month ago · Read more on Tripadvisor ↗
January in Santiago is hot and dry - most days high-20s to 30C, our row saying 30.4C at 54 percent humidity with 0.5 precipitation days - and regulars stress that the heat is a dry one that always drops away in the evening, so a light top for after dark is worth carrying. Their practical advice is to put the tours in the morning and look for air conditioning in the hotel. The unexpected bonus is the air: January and February are the Chilean holiday months, the city empties, and the smog that defines Santiago's winter falls to its lowest of the year. Our row's AQI 83 is the annual low rather than a good absolute number. The record: 13.5C nights, 7.3mm of rain and 13 hours of sun.
TheCityLeavesTheSmogGoes · January · 1 month ago · Read more on Tripadvisor ↗

Add your own note from Santiago's card on the map.

Santiago climate normals — April

Daytime high25°C / 77°F🌤 warm
Nighttime low8°C / 46°F
Feels like (high)24°C / 75°F
Rainfall34 mm / 1.3 in🌦 some rain
Rainy days3 days
Humidity57%🍃 comfortable
Dew point7°C / 45°F
Sunshine9.6 h/day
Daylight11.2 h
Wind10 km/h / 6 mph
Air quality (US AQI)113😷 poor

Monthly averages from ERA5 reanalysis. AQI is the mean US Air Quality Index for the month.

Crowds in Santiago in April

How busy the place itself is — school and mass holidays, the months an editor tagged, and how sought-after the weather makes them. Never part of the comfort score.

Shoulder seasonbetween the peaks

JFMAMJJASOND

Peak crowdsBusyShoulder seasonQuiet

Best months for Santiago's weather

Ranked by this destination's own climate comfort score across the year — a different thing from how busy it gets (see Crowds above).

Fair weatherSantiago's best weather comes in January, October and November — separate windows, not one continuous season.

JFMAMJJASOND

Best weatherFair weatherToughest weather

What's on in Santiago in April

Recurring seasonal events, natural spectacles, closures and holidays — curated and sourced.

  • Nature

    Vendimia, the grape harvest

    1 Mar – 15 Apr · usually

    The valleys either side of the city bring in the harvest through March and hold their own festivals for it; hot days and cold nights all month.

What's on around the world in April →

Nearby, and something's on

Within 300 km of Santiago — a day trip or a short hop — with something on this month. Never part of the comfort score.

Where is Santiago?

Loading map…

Santiago in April — FAQ

Is April a good time to visit Santiago?
April in Santiago: warm, a little rain, with poor air quality — fine if you can take poor air. It ranks #7 of 12 months for Santiago on SeasonMap's comfort score (86/100).
What is the weather like in Santiago in April?
In April, Santiago averages a daily high of 24.8°C and a low of 7.9°C, with about 33.6 mm of rain over roughly 2.7 rainy days.
What is the air quality in Santiago in April?
Santiago has a mean US Air Quality Index of about 113 in April.

Within 300 km: Mendoza's Grape harvest around 15 Feb – 15 Apr, and Valle Nevado's Closed for the summer around 20 Oct – 10 Jun.