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Weather in Antofagasta - 14-day forecast

Detailed weather forecast for Antofagasta, Chile: daytime and night temperature, rain, sunrise and sunset - today and for the next two weeks.
Forecast for the next days in Antofagasta
today☀️ 21°night 18°
Sun☀️ 21°night 18°
Mon☀️ 20°night 17°
Tue☁️ 21°night 18°
Wed🌤️ 19°night 18°
Thu☁️ 18°💧 0.2 mm
Fri🌧️ 20°💧 0.5 mm
Sat🌤️ 23°night 18°
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

Saturday 5 Sept in Antofagasta, the forecast high is 21°C. Typical daytime temperatures at this time of year range from 17°C to 18°C, so it will be exceptionally warm. It is warmer than 96% of similar days.

21°Cexceptionally warm
usually 17°C–18°C
warmer than 96% of similar days
night: exceptionally warm rain: typical rainfall wind: exceptionally light
21°Cexceptionally warm
usually 17°C–18°C
warmer than 96% of similar days
night: exceptionally warm rain: typical rainfall wind: exceptionally light
20°Cexceptionally warm
usually 17°C–18°C
warmer than 96% of similar days
night: exceptionally warm rain: typical rainfall wind: exceptionally light
21°Cexceptionally warm
usually 17°C–18°C
warmer than 96% of similar days
night: exceptionally warm rain: typical rainfall wind: exceptionally light
19°Cexceptionally warm
usually 17°C–18°C
warmer than 93% of similar days
night: exceptionally warm rain: typical rainfall wind: exceptionally light
18°Cwarmer than usual
usually 17°C–18°C
warmer than 85% of similar days
night: exceptionally warm rain: exceptionally wet wind: exceptionally light
20°Cexceptionally warm
usually 17°C–18°C
warmer than 96% of similar days
night: exceptionally warm rain: exceptionally wet 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 →
10°18°25° 1981: 19°C1982: 19°C1983: 18°C1984: 17°C1985: 18°C1986: 18°C1987: 19°C1988: 18°C1989: 17°C1990: 19°C1991: 18°C1992: 17°C1993: 17°C1994: 19°C1995: 18°C1996: 17°C1997: 19°C1998: 18°C1999: 18°C2000: 17°C2001: 17°C2002: 18°C2003: 16°C2004: 17°C2005: 18°C2006: 18°C2007: 15°C2008: 18°C2009: 17°C2010: 16°C2011: 16°C2012: 17°C2013: 19°C2014: 17°C2015: 19°C2016: 19°C2017: 17°C2018: 17°C2019: 17°C2020: 16°C2021: 17°C2022: 17°C2023: 20°C2024: 18°C2025: 18°C 2026 forecast: 20°C current forecast 20°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 2007 (15°C) and the warmest was 2023 (20°C). The current forecast averages 20°C - higher than in 100% of historical years.

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 - Antofagasta

Antofagasta - 14-day weather forecast infographic

Day-by-day forecast for Antofagasta

Saturday5 September 2026
☀️21°clear sky
sunrise 06:49 · sunset 18:32 · night 18° · evening 18° · humidity 65% · wind 3 m/s · clouds 3%
Sunday6 September 2026
☀️21°clear sky
sunrise 07:48 · sunset 19:32 · night 18° · evening 18° · humidity 69% · wind 3 m/s · clouds 2%
Monday7 September 2026
☀️20°clear sky
sunrise 07:47 · sunset 19:33 · night 17° · evening 18° · humidity 68% · wind 3 m/s · clouds 8%
Tuesday8 September 2026
☁️21°overcast clouds
sunrise 07:46 · sunset 19:33 · night 18° · evening 19° · humidity 68% · wind 3 m/s · clouds 96%
Wednesday9 September 2026
🌤️19°a few clouds
sunrise 07:45 · sunset 19:33 · night 18° · evening 18° · humidity 75% · wind 3 m/s · clouds 14%
Thursday10 September 2026
☁️18°broken clouds
sunrise 07:44 · sunset 19:34 · night 16° · evening 17° · rain 0.21 mm · humidity 75% · wind 3 m/s · clouds 74%
Friday11 September 2026
🌧️20°light rain
sunrise 07:43 · sunset 19:34 · night 19° · evening 19° · rain 0.54 mm · humidity 55% · wind 6 m/s · clouds 17%
Saturday12 September 2026
🌤️23°scattered clouds
sunrise 07:42 · sunset 19:34 · night 18° · evening 20° · humidity 49% · wind 5 m/s · clouds 37%
Sunday13 September 2026
☀️21°clear sky
sunrise 07:41 · sunset 19:35 · night 18° · evening 19° · humidity 62% · wind 3 m/s · clouds 4%
Monday14 September 2026
☀️21°clear sky
sunrise 07:40 · sunset 19:35 · night 18° · evening 20° · humidity 63% · wind 3 m/s · clouds 55%
Tuesday15 September 2026
🌤️21°a few clouds
sunrise 07:39 · sunset 19:35 · night 18° · evening 19° · humidity 65% · wind 3 m/s · clouds 11%
Wednesday16 September 2026
☀️21°clear sky
sunrise 07:38 · sunset 19:36 · night 18° · evening 19° · humidity 64% · wind 3 m/s · clouds 2%
Thursday17 September 2026
☀️21°clear sky
sunrise 07:37 · sunset 19:36 · night 18° · evening 19° · humidity 61% · wind 3 m/s · clouds 6%
Friday18 September 2026
☁️21°overcast clouds
sunrise 07:36 · sunset 19:36 · night 17° · evening 18° · humidity 61% · wind 3 m/s · clouds 100%
Saturday19 September 2026
☀️21°clear sky
sunrise 07:35 · sunset 19:37 · night 18° · evening 19° · humidity 59% · wind 4 m/s · clouds 2%

UV index in Antofagasta - is it safe to sunbathe?

UV INDEX · 16-DAY FORECASTAntofagasta03681111+7.7UV 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 25 min8Sat5.097Sun6.097Mon7.098Tue8.098Wed9.098Thu10.098Fri11.098Sat12.098Sun13.098Mon14.098Tue15.098Wed16.098Thu17.098Fri18.098Sat19.098Sun20.090-2 low3-5 moderate6-7 high8-10 very high11+ extremeworld-prices.com · 2026-09-05
Today the UV index in Antofagasta is 8 (high) - unprotected fair skin can burn in about 25 minutes. SPF 30-50, a hat and sunglasses are a must. Better stay in shade between 11:00 and 15:00.

Sea temperature - Antofagasta

Water today
19°C
Week avg
19°C
Waves today
1.8 m
How's the water?
cold
16-day sea temperature forecast:
5.09 19°C6.09 19°C7.09 19°C8.09 19°C9.09 19°C10.09 19°C11.09 18°C12.09 18°C13.09 19°C
Average sea temperature through the year:
Jan 19°CFeb 21°CMar 20°CApr 18°CMay 17°CJun 16°CJul 16°CAug 16°CSep 16°COct 17°CNov 18°CDec 18°C
Sea-surface temperature from marine models, updated daily. See also: where the sea is warmest right now.

Air quality and smog in Antofagasta

Air quality in Antofagasta is currently very good. Fine particulate PM2.5: 10.5 µg/m³, PM10: 15.3 µg/m³.
CityPM2.5 (µg/m³)PM10 (µg/m³)Air quality
Antofagasta10.515.3very good
Based on PM2.5 thresholds. Station readings, updated daily (last reading: 2026-09-04, 22:00).
Upcoming public holidays in Chile: Independence Day — 18 September · Army Day — 19 September · Columbus Day — 12 October.

Nearby and related places

CalamaIquiqueAricaTarijaSan Miguel de TucumánTemucoSantiagoChillánOsorno

FAQ - Antofagasta weather

What is the weather like in Antofagasta today?
Today it is about 21° during the day and 18° at night, clear sky.
How far ahead can I check the forecast for Antofagasta?
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.