Constitución weather in October

In October, Constitución sees average daytime highs of 14°C and overnight lows near 11°C, with 28 mm of rain across 4.3 wet days and about 12.9 hours of daylight. It is the 8th-warmest and 7th-wettest month of the year here.

Day-to-day highs hold fairly steady near 14°C through the month. The sky is clear or mostly clear about 54% of the time in October, and the air most often feels dry.

Daylight stretches from about 12 h 24 min at the start of October to 13 h 24 min by month's end. Set against the rest of the year, October is Constitución's 6th-clearest and 4th-windiest month. For the whole year in context, see Constitución's year-round climate.

Daytime high
14°
8th warmest
Overnight low
11°
5th coldest
Rainfall
28 mm
4.3 wet days
Daylight
12 h 54 min
7:07 AM – 8:02 PM
Cloud cover
41%
6th clearest
Wind
18 km/h
4th windiest
Solar energy
6.67 kWh/m²
Travel score
5.0
out of 10

Temperature in October

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 14°C through the month.

A typical October day in Constitución reaches about 14°C in the afternoon and slips back to 11°C overnight — a 3°C spread between the day's warmth and the night's chill. On most days the high lands between 13°C and 16°C. Set against its neighbours, October runs about 1°C warmer than September and about 1°C cooler than November.

10°15°20°151015202531
Avg high (°C)Avg low (°C)
11411
21411
31411
41411
51411
61411
71411
81411
91411
101411
111411
121411
131411
141411
151411
161411
171411
181411
191411
201411
211411
221411
231411
241411
251512
261512
271512
281512
291512
301512
311512

Constitución weather by month

How October compares with the rest of the year at a glance. October is the 8th-warmest and 7th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan18° / 15°20.514.18.0
Feb18° / 15°50.713.38.0
Mar18° / 14°91.212.37.5
Apr16° / 13°313.611.15.9
May14° / 11°1227.710.24.4
Jun13° / 11°169119.73.6
Jul12° / 10°1218.99.93.5
Aug13° / 10°988.410.73.6
Sep13° / 10°495.111.84.2
Oct14° / 11°284.312.95.0
Nov16° / 12°111.413.96.2
Dec17° / 14°6114.37.2

Cloud cover in October

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 54% of the time in October.

Beyond those clear spells, partly cloudy skies cover about 13% of October, with mostly cloudy or overcast conditions the remaining 33%. Skies tend to open up as the month goes on.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
15941
26040
36139
46139
56139
66238
76337
86337
96436
106535
116634
126634
136733
146733
156733
166832
176832
186832
196931
206931
216931
227030
237030
247030
257129
267129
277129
287129
297129
307129
317129

Chance of precipitation in October

Any precipitation

Constitución gets around 28 mm of rain over 4.3 wet days in October. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 13% and peaks near 16% on the wettest days. The odds ease toward the end of the month.

0%10%20%30%151015202531
Rain chance (%)
116
216
316
416
516
616
716
816
916
1016
1115
1214
1314
1413
1513
1612
1712
1812
1912
2011
2111
2211
2311
2411
2510
2610
2710
2810
2910
3010
319

Humidity in October

DryComfortableHumidMuggyOppressiveMiserable

Most of October feels dry — the stacked bands show each day's mix of comfort levels, read off the dew point.

By dew point, October lands in the dry band about 100% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)
11000
21000
31000
41000
51000
61000
71000
81000
91000
101000
111000
121000
131000
141000
151000
161000
17991
18991
19991
20991
21991
22991
23991
24991
25991
26991
27991
28991
29991
30991
31991

Wind in October

Winds average 18 km/h in October.

Across October, daily wind ranges from about 17 km/h on the calmest days to 19 km/h at its breeziest. It stays fairly steady from day to day.

0510152025151015202531
Wind speed (km/h)Feels
117light breeze
217light breeze
317light breeze
417light breeze
518light breeze
618light breeze
718light breeze
818light breeze
918light breeze
1018light breeze
1118light breeze
1218light breeze
1318light breeze
1418light breeze
1518light breeze
1618light breeze
1718light breeze
1818light breeze
1918light breeze
2018light breeze
2119light breeze
2219light breeze
2319light breeze
2419light breeze
2519light breeze
2619light breeze
2719light breeze
2819light breeze
2919light breeze
3019light breeze
3119light breeze

Sunrise & sunset in October

DaylightNight

Daylight runs from about 12 h 24 min at the start of October to 13 h 24 min by month's end. The lit band spans sunrise to sunset each day.

Days grow by about 60 minutes over October. Sunrise moves from 7:28 AM to 6:50 AM, and sunset from 7:49 PM to 8:16 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
112.47:287:49
212.47:277:50
312.47:257:51
412.57:247:52
512.57:227:52
612.57:217:53
712.67:197:54
812.67:187:55
912.77:177:56
1012.77:157:57
1112.77:147:58
1212.87:137:58
1312.87:117:59
1412.87:108:00
1512.97:098:01
1612.97:078:02
1712.97:068:03
1813.07:058:04
1913.07:048:05
2013.17:028:06
2113.17:018:06
2213.17:008:07
2313.26:598:08
2413.26:588:09
2513.26:578:10
2613.36:568:11
2713.36:558:12
2813.36:538:13
2913.46:528:14
3013.46:518:15
3113.46:508:16

Solar energy in October

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in October, about 6.67 kWh/m².

For context, solar energy here swings from a low near 2.16 kWh/m² to a high of 8.8 kWh/m² in December across the year — October's 6.67 kWh/m² falls in the middle.

02468151015202531
Solar energy (kWh/m²)Level
15.8Bright
25.9Bright
36.0Bright
46.0Intense
56.1Intense
66.1Intense
76.2Intense
86.2Intense
96.3Intense
106.3Intense
116.4Intense
126.5Intense
136.5Intense
146.6Intense
156.6Intense
166.7Intense
176.8Intense
186.8Intense
196.9Intense
206.9Intense
217.0Intense
227.0Intense
237.1Intense
247.1Intense
257.2Intense
267.2Intense
277.3Intense
287.3Intense
297.3Intense
307.4Intense
317.4Intense
Planning a trip in October

Hazard calendar for Constitución

In seasonPeak

None of Constitución's seasonal hazards are active in October. The full-year calendar below shows when the rainy season, cyclone risk and dust haze do peak.

Constitución's rainy season runs May–August, when most of the year's rain falls.

Rainy season
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec

Is October a good time to visit Constitución?

Our two travel scores rate October for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal).

5.0
Sightseeing
7th-best month of the year
0.0
Beach & pool
8th-best month of the year

October is a reasonable time to visit Constitución for sightseeing.

What to pack for Constitución in October

From October's temperature range, rain chance, sun and wind — what's worth putting in the bag.

In October, Constitución sees daytime highs around 14°C and nights near 11°C. Pack sun protection. Worth having: a warm layer. About 4 days see rain.

sun protectiona warm layer

Sea temperature near Constitución in October

The nearest coast averages about 13°C in October — the other half of the beach question. The full-year curve and swim-comfort zones are below.

The sea at the nearest coast (about 20 km away) is warmest in February at about 15°C and coldest in August near 12°C.

The water stays below 20°C all year — cool enough that most swimmers want a wetsuit.

10°12°14°16°JanFebMarAprMayJunJulAugSepOctNovDecbracingcool
Sea temperature (°C)Comfort
Jan15Bracing
Feb15Cool
Mar15Bracing
Apr14Bracing
May14Bracing
Jun13Bracing
Jul13Bracing
Aug12Bracing
Sep12Bracing
Oct13Bracing
Nov13Bracing
Dec14Bracing

UV index in Constitución in October

LowModerateHighVery highExtreme

Clear-sky midday UV in October peaks around 9 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Constitución peaks around January 16 at about 13 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near June 15 at about 2 (moderate).

The index reaches 3 or more — the level where the WHO recommends sun protection — in 9 months of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeVery highModerateHighVery highExtremeJan 16UV 13Jun 15UV 2
UV index (midday)Level
Jan13Extreme
Feb11Extreme
Mar9Very high
Apr5High
May3Moderate
Jun2Moderate
Jul3Moderate
Aug4Moderate
Sep6High
Oct9Very high
Nov11Extreme
Dec12Extreme
Location & terrain

Where is Constitución?

Constitución sits at 35.3°S, 72.4°W, 19 m above sea level, in Chile. The nearest listed city is San Javier, 68 km away.

Topography around Constitución

How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Constitución.

Within 3 km, the terrain around Constitución has significant variations in elevation — a maximum elevation change of 265 m around an average of 60 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 577 m; within 80 km, large variations in elevation — a maximum elevation change of 891 m.

The land around Constitución is covered by trees (35%) and water (34%) within 3 km, water (42%), trees (33%) and grassland (21%) within 16 km, and water (34%), trees (30%) and grassland (27%) within 80 km.

3 km
265 m
16 km
577 m
80 km
891 m
treesshrubsgrasslandcroplandartificial surfacesbare terrainwaterwetland
October weather nearby: San Javier 68 km · Talca 70 km · Cauquenes 71 km · San Clemente 87 km · Linares 93 km · Longaví 96 km · Colbún 100 km · Sagrada Familia 101 km

Chile travel facts

Travel advisory
Level 2
Exercise Increased Caution
Power plugs
Type C / F / L
220 V · 50 Hz
Prices
≈ 48% of US
price level, 2025
GDP per capita
$17,995
2025
Happiness
6.3 / 10
World Happiness, 2025
Safe drinking water
98%
of population, 2024
Homicide rate
6.3
per 100k, 2023
Road deaths
14.9
per 100k/yr, 2019
Income group
High
World Bank
English
Moderate
EF EPI 517
Religion
Catholic 57%none 26%Evangelical or Protestant 16%other Christians and traditions related to Christ 1%

Sources: World Bank, US State Department, World Happiness Report, WHO/UNICEF, EF EPI, CIA World Factbook.

Data sources

Temperature, precipitation, cloud, humidity, wind and solar figures are a 1991–2020 climatology for Constitución (-35.3332°, -72.4116°, elevation 19 m), computed from hourly ERA5 reanalysis — contains modified Copernicus Climate Change Service information. Sun figures are astronomical calculations, not observations. City data © GeoNames, CC BY 4.0. Map outlines from Natural Earth (public domain); interactive map © Google. Sea temperatures are the NOAA OISST v2.1 1991–2020 monthly climatology (public domain), sampled at the nearest ocean point. UV index is derived from CAMS (Copernicus Atmosphere Monitoring Service) clear-sky UV data — contains modified Copernicus Atmosphere Monitoring Service information. Topography is sampled from the Copernicus DEM GLO-90 elevation model (© ESA/Airbus) and ESA WorldCover 2021 land cover (CC BY 4.0).