San Javier weather in December

In December, San Javier sees average daytime highs of 27°C and overnight lows near 12°C, with 13 mm of rain across 1.6 wet days and about 14.4 hours of daylight. It is the 3rd-warmest and 10th-wettest month of the year here.

Highs climb over the month, from about 26°C in the first days to 28°C by the end. The sky is clear or mostly clear about 77% of the time in December, and the air most often feels dry.

Daylight stretches from about 14 h 12 min at the start of December to 14 h 24 min by month's end. Set against the rest of the year, December is San Javier's 3rd-clearest and 1st-windiest month. For the whole year in context, see San Javier's year-round climate.

Daytime high
27°
3rd warmest
Overnight low
12°
10th coldest
Rainfall
13 mm
1.6 wet days
Daylight
14 h 24 min
6:31 AM – 8:55 PM
Cloud cover
22%
3rd clearest
Wind
11 km/h
1st windiest
Solar energy
8.79 kWh/m²
Travel score
8.6
out of 10

San Javier is city in Maule, Chile.

Density
4,431/km²
people per km²
Founded
1852

Air quality: WHO Ambient Air Quality Database. Density & description: Wikidata (CC0), GeoNames.

Temperature in December

Average highAverage lowShaded bands: 10–90% of days

Highs climb over the month, from about 26°C in the first days to 28°C by the end.

A typical December day in San Javier reaches about 27°C in the afternoon and slips back to 12°C overnight — a 15°C spread between the day's warmth and the night's chill. On most days the high lands between 23°C and 30°C. Set against its neighbours, December runs about 3°C warmer than November and about 2°C cooler than January.

10°20°30°151015202531
Avg high (°C)Avg low (°C)
12511
22611
32611
42611
52611
62611
72611
82612
92612
102612
112612
122612
132712
142712
152712
162712
172712
182712
192712
202712
212712
222712
232712
242712
252813
262813
272813
282813
292813
302813
312813

San Javier weather by month

How December compares with the rest of the year at a glance. December is the 3rd-warmest and 10th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan28° / 13°4114.17.8
Feb28° / 13°70.913.38.3
Mar25° / 11°141.612.38.8
Apr21° / 454.111.17.6
May16° / 1368.210.15.3
Jun13° / 19911.69.63.6
Jul13° / 1389.69.83.8
Aug15° / 1128.810.74.7
Sep17° / 625.711.86.2
Oct20° / 405.112.97.3
Nov24° / 10°15213.98.7
Dec27° / 12°131.614.48.6

Cloud cover in December

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 77% of the time in December.

Beyond those clear spells, partly cloudy skies cover about 9% of December, with mostly cloudy or overcast conditions the remaining 14%. Skies tend to open up as the month goes on.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
18317
28317
38317
48317
58317
68317
78317
88317
98416
108416
118416
128515
138515
148515
158515
168515
178515
188614
198713
208713
218713
228713
238713
248812
258812
268812
279010
289010
299010
309010
319010

Chance of precipitation in December

Any precipitation

San Javier gets around 13 mm of rain over 1.6 wet days in December. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 5% and peaks near 7% on the wettest days.

0%10%20%30%151015202531
Rain chance (%)
16
26
37
47
57
67
77
86
96
106
116
126
136
145
155
165
175
185
195
205
214
224
234
244
254
263
273
283
293
303
313

Humidity in December

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, December lands in the dry band about 87% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)
19550
29460
39370
49280
59280
69091
789101
889101
988111
1088111
1187121
1287121
1387121
1487121
1587121
1687121
1787121
1887121
1986131
2087130
2187130
2286140
2386140
2484151
2584151
2683161
2782171
2882171
2981181
3080191
3180191

Wind in December

Winds average 11 km/h in December, the windiest month of the year.

Across December, daily wind ranges from about 11 km/h on the calmest days to 11 km/h at its breeziest. It stays fairly steady from day to day.

051015151015202531
Wind speed (km/h)Feels
111calm
211calm
311calm
411calm
511calm
611calm
711calm
811calm
911calm
1011calm
1111calm
1211calm
1311calm
1411calm
1511calm
1611calm
1711calm
1811calm
1911calm
2011calm
2111calm
2211calm
2311calm
2411calm
2511calm
2611calm
2711calm
2811calm
2911calm
3011calm
3111calm

Sunrise & sunset in December

DaylightNight

Daylight runs from about 14 h 12 min at the start of December to 14 h 24 min by month's end. The lit band spans sunrise to sunset each day.

Days grow by about 12 minutes over December. Sunrise moves from 6:30 AM to 6:39 AM, and sunset from 8:44 PM to 9:01 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
114.26:308:44
214.26:308:45
314.36:308:45
414.36:298:46
514.36:298:47
614.36:298:48
714.36:308:49
814.36:308:49
914.36:308:50
1014.46:308:51
1114.46:308:52
1214.46:308:52
1314.46:308:53
1414.46:318:54
1514.46:318:54
1614.46:318:55
1714.46:328:56
1814.46:328:56
1914.46:328:57
2014.46:338:57
2114.46:338:58
2214.46:348:58
2314.46:348:59
2414.46:358:59
2514.46:359:00
2614.46:369:00
2714.46:369:00
2814.46:379:01
2914.46:379:01
3014.46:389:01
3114.46:399:01

Solar energy in December

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in December, about 8.79 kWh/m² — the sunniest month for solar.

For context, solar energy here swings from a low near 2.03 kWh/m² to a high of 8.79 kWh/m² in December across the year — December's 8.79 kWh/m² sits near the top of that range.

02468151015202531
Solar energy (kWh/m²)Level
18.5Intense
28.6Intense
38.6Intense
48.6Intense
58.6Intense
68.6Intense
78.6Intense
88.7Intense
98.7Intense
108.7Intense
118.7Intense
128.7Intense
138.8Intense
148.8Intense
158.8Intense
168.8Intense
178.8Intense
188.8Intense
198.8Intense
208.9Intense
218.9Intense
228.9Intense
238.9Intense
248.9Intense
258.9Intense
268.9Intense
279.0Intense
289.0Intense
299.0Intense
309.0Intense
319.0Intense
Planning a trip in December

Hazard calendar for San Javier

In seasonPeak

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

San Javier'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 December a good time to visit San Javier?

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

8.6
Sightseeing
3rd-best month of the year
8.5
Beach & pool
3rd-best month of the year

December is one of the better times to visit San Javier for general sightseeing. The water and warmth also suit a beach or pool day.

What to pack for San Javier in December

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

In December, San Javier sees daytime highs around 27°C and nights near 12°C. Pack sun protection. Worth having: light clothes.

sun protectionlight clothes

UV index in San Javier in December

LowModerateHighVery highExtreme

Clear-sky midday UV in December peaks around 12 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in San Javier peaks around January 15 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 highModerateVery highExtremeJan 15UV 13Jun 15UV 2
UV index (midday)Level
Jan13Extreme
Feb12Extreme
Mar9Very high
Apr5High
May3Moderate
Jun2Moderate
Jul3Moderate
Aug4Moderate
Sep6High
Oct8Very high
Nov11Extreme
Dec12Extreme

Air quality in San Javier in December

GoodModeratePoorUnhealthyVery unhealthy

Average fine-particle pollution (PM2.5) through the year — so you can see where December falls, not just the annual average.

Air quality in San Javier is worst in January — around 36 µg/m³ PM2.5 (poor), about 5.3× the cleanest month (November, 7 µg/m³).

Modeled monthly averages (CAMS reanalysis, 2015–2024).

010203040JanFebMarAprMayJunJulAugSepOctNovDecModerateGoodModerateGoodJan 1834 µg/m³Nov 137 µg/m³
PM2.5 (µg/m³)Level
Jan36Poor
Feb21Moderate
Mar8Good
Apr11Good
May27Moderate
Jun20Moderate
Jul12Good
Aug12Good
Sep11Good
Oct8Good
Nov7Good
Dec10Good
Location & terrain

Where is San Javier?

San Javier sits at 35.6°S, 71.7°W, 101 m above sea level, in Chile. The nearest listed city is Talca, 20 km away.

Topography around San Javier

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

Within 3 km, the terrain around San Javier has only modest variations in elevation — a maximum elevation change of 111 m around an average of 92 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 621 m; within 80 km, extreme variations in elevation — a maximum elevation change of 3,052 m.

The land around San Javier is covered by cropland (40%) and trees (24%) within 3 km, cropland (34%), trees (29%) and grassland (28%) within 16 km, and trees (40%) and grassland (33%) within 80 km.

3 km
111 m
16 km
621 m
80 km
3,052 m
treesshrubsgrasslandcroplandartificial surfacesbare terrainwater
December weather nearby: Talca 20 km · San Clemente 23 km · Linares 31 km · Colbún 31 km · Longaví 41 km · Parral 62 km · Molina 67 km · Cauquenes 68 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 San Javier (-35.5952°, -71.7292°, elevation 101 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. UV index is derived from CAMS (Copernicus Atmosphere Monitoring Service) clear-sky UV data — contains modified Copernicus Atmosphere Monitoring Service information. Monthly air-quality (PM2.5) seasonality is from the CAMS EAC4 reanalysis (Copernicus Atmosphere Monitoring Service), scaled to the WHO annual mean where available. Topography is sampled from the Copernicus DEM GLO-90 elevation model (© ESA/Airbus) and ESA WorldCover 2021 land cover (CC BY 4.0).