worldweather

Weather in Santiago - 14-day forecast

Detailed weather forecast for Santiago, Chile: daytime and night temperature, rain, sunrise and sunset - today and for the next two weeks.
Forecast for the next days in Santiago
today☀️ 19°💧 1.1 mm
Sun☀️ 21°💧 0.5 mm
Mon☀️ 18°💧 0.1 mm
Tue🌧️ 17°💧 0.4 mm
Wed🌧️ 18°💧 0.1 mm
Thu🌧️ 17°💧 2.3 mm
Fri🌧️ 16°💧 0.7 mm
Sat☁️ 18°💧 0.1 mm
Forecast vs 1991-2020 climate normal

How does the current forecast compare with normal?

We compare the coming days with weather usually observed at this time of year.

NASA POWER

Friday 11 Sept in Santiago, the forecast high is 16°C. Typical daytime temperatures at this time of year range from 14°C to 23°C, so it will be cooler than usual. It is cooler than 71% of similar days.

19°Cnear normal
usually 13°C–23°C
night: exceptionally warm rain: more rain than usual wind: exceptionally light
21°Cnear normal
usually 13°C–23°C
night: exceptionally warm rain: more rain than usual wind: exceptionally light
18°Cnear normal
usually 13°C–23°C
night: exceptionally warm rain: more rain than usual wind: lighter than usual
17°Cnear normal
usually 14°C–23°C
night: exceptionally warm rain: more rain than usual wind: exceptionally light
18°Cnear normal
usually 14°C–23°C
night: exceptionally warm rain: more rain than usual wind: exceptionally light
17°Cnear normal
usually 14°C–23°C
night: exceptionally warm rain: exceptionally wet wind: typical
16°Ccooler than usual
usually 14°C–23°C
cooler than 71% of similar days
night: exceptionally warm rain: more rain than usual wind: stronger than usual

How warm was this week in previous years?

Each bar shows the average daily high during the same 7-day period in each year.

swipe to see more years →
5°18°30° 1981: 18°C1982: 21°C1983: 19°C1984: 20°C1985: 19°C1986: 24°C1987: 13°C1988: 18°C1989: 13°C1990: 18°C1991: 22°C1992: 19°C1993: 19°C1994: 24°C1995: 20°C1996: 20°C1997: 13°C1998: 16°C1999: 9°C2000: 12°C2001: 18°C2002: 15°C2003: 15°C2004: 15°C2005: 16°C2006: 18°C2007: 21°C2008: 15°C2009: 13°C2010: 22°C2011: 19°C2012: 20°C2013: 23°C2014: 15°C2015: 16°C2016: 24°C2017: 14°C2018: 24°C2019: 14°C2020: 19°C2021: 18°C2022: 19°C2023: 16°C2024: 22°C2025: 21°C 2026 forecast: 18°C current forecast 18°C 198119902000201020202026
cooler yearstypical rangewarmer years2026 forecastcurrent forecast

From 1981 to 2025, the 5-11 Sept period averaged 18°C by day. The coolest year was 1999 (9°C) and the warmest was 2018 (24°C). The current forecast averages 18°C - close to the historical median.

Historical reference: NASA POWER daily gridded data (MERRA-2), the 1991-2020 normal and a +/- 7-day calendar window. The typical range is the 20th-80th percentile. This is not a city weather-station reading and does not change the current forecast. NASA POWER Daily API.

14-day forecast - Santiago

Santiago - 14-day weather forecast infographic

Santiago 30 & 45-day weather - long-range outlook

Next 15 days · forecast
20°
around 17° at night · days with rain: 5
Weeks 3-4 · avg for September
20°
around 6° at night · rain chance 12%
Weeks 5-7 · avg for October
22°
around 8° at night · rain chance 12%
The 30 & 45-day outlook for Santiago: the next 15 days are a numerical forecast updated daily - on average 20° by day and 17° at night. Further out we rely on multi-year climate averages: around 20° in September, and about 22° in October. Forecasts beyond two weeks are indicative only.

Day-by-day forecast for Santiago

Saturday5 September 2026
☀️19°clear sky
sunrise 06:56 · sunset 18:28 · night 15° · evening 20° · rain 1.14 mm · humidity 20% · wind 2 m/s · clouds 13%
Sunday6 September 2026
☀️21°clear sky
sunrise 07:54 · sunset 19:28 · night 15° · evening 19° · rain 0.45 mm · humidity 18% · wind 3 m/s · clouds 5%
Monday7 September 2026
☀️18°clear sky
sunrise 07:53 · sunset 19:29 · night 14° · evening 17° · rain 0.12 mm · humidity 47% · wind 3 m/s · clouds 100%
Tuesday8 September 2026
🌧️17°light rain
sunrise 07:52 · sunset 19:29 · night 16° · evening 19° · rain 0.43 mm · humidity 43% · wind 3 m/s · clouds 1%
Wednesday9 September 2026
🌧️18°light rain
sunrise 07:50 · sunset 19:30 · night 16° · evening 19° · rain 0.12 mm · humidity 38% · wind 3 m/s · clouds 98%
Thursday10 September 2026
🌧️17°light rain
sunrise 07:49 · sunset 19:31 · night 14° · evening 16° · rain 2.25 mm · humidity 57% · wind 4 m/s · clouds 100%
Friday11 September 2026
🌧️16°light rain
sunrise 07:47 · sunset 19:31 · night 14° · evening 17° · rain 0.69 mm · humidity 57% · wind 4 m/s · clouds 94%
Saturday12 September 2026
☁️18°overcast clouds
sunrise 07:46 · sunset 19:32 · night 16° · evening 20° · rain 0.12 mm · humidity 28% · wind 3 m/s · clouds 85%
Sunday13 September 2026
☁️19°overcast clouds
sunrise 07:45 · sunset 19:33 · night 18° · evening 21° · rain 9.24 mm · humidity 35% · wind 2 m/s · clouds 100%
Monday14 September 2026
☁️23°overcast clouds
sunrise 07:43 · sunset 19:33 · night 21° · evening 25° · rain 3.51 mm · humidity 21% · wind 2 m/s · clouds 100%
Tuesday15 September 2026
☁️24°overcast clouds
sunrise 07:42 · sunset 19:34 · night 21° · evening 25° · rain 3.03 mm · humidity 19% · wind 2 m/s · clouds 100%
Wednesday16 September 2026
☁️23°overcast clouds
sunrise 07:41 · sunset 19:35 · night 20° · evening 24° · humidity 40% · wind 3 m/s · clouds 95%
Thursday17 September 2026
☁️23°overcast clouds
sunrise 07:39 · sunset 19:35 · night 21° · evening 25° · humidity 35% · wind 3 m/s · clouds 100%
Friday18 September 2026
☁️23°overcast clouds
sunrise 07:38 · sunset 19:36 · night 20° · evening 24° · humidity 38% · wind 4 m/s · clouds 98%
Saturday19 September 2026
🌧️21°light rain
sunrise 07:37 · sunset 19:37 · night 17° · evening 20° · rain 0.6 mm · humidity 65% · wind 4 m/s · clouds 15%

UV index in Santiago - is it safe to sunbathe?

UV INDEX · 16-DAY FORECASTSantiago03681111+6.2UV HIGHtoday, daily maxSPF 30-50, a hat and sunglasses are a must. Betterstay in shade between 11:00 and 15:00.Unprotected fair skin may burn in about 30 min6Sat5.096Sun6.096Mon7.096Tue8.096Wed9.096Thu10.095Fri11.097Sat12.096Sun13.097Mon14.096Tue15.097Wed16.097Thu17.097Fri18.096Sat19.095Sun20.090-2 low3-5 moderate6-7 high8-10 very high11+ extremeworld-prices.com · 2026-09-05
Today the UV index in Santiago is 6 (high) - unprotected fair skin can burn in about 30 minutes. SPF 30-50, a hat and sunglasses are a must. Better stay in shade between 11:00 and 15:00.

Santiago weather through the year

Santiago - annual climate

Warmest, driest months on average: January, February, March, April.

Upcoming public holidays in Chile: Independence Day — 18 September · Army Day — 19 September · Columbus Day — 12 October.

Nearby and related places

ChillánCoquimboTemucoOsornoAntofagastaLa SerenaAricaIquique

FAQ - Santiago weather

What is the weather like in Santiago today?
Today it is about 19° during the day and 15° at night, clear sky.
How far ahead can I check the forecast for Santiago?
This page shows a detailed 14-day forecast plus the long-term monthly climate, so you can plan both a short trip and a holiday months ahead.