Coelemu weather in December

In December, Coelemu sees average daytime highs of 23°C and overnight lows near 11°C, with 13 mm of rain across 2.2 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 22°C in the first days to 24°C by the end. The sky is clear or mostly clear about 73% of the time in December, and the air most often feels dry.

Daylight stretches from about 14 h 18 min at the start of December to 14 h 30 min by month's end. Set against the rest of the year, December is Coelemu's 3rd-clearest and 1st-windiest month. For the whole year in context, see Coelemu's year-round climate.

Daytime high
23°
3rd warmest
Overnight low
11°
10th coldest
Rainfall
13 mm
2.2 wet days
Daylight
14 h 30 min
6:33 AM – 9:01 PM
Cloud cover
25%
3rd clearest
Wind
12 km/h
1st windiest
Solar energy
8.68 kWh/m²
Travel score
8.7
out of 10

Coelemu is city in Chile.

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 22°C in the first days to 24°C by the end.

A typical December day in Coelemu reaches about 23°C in the afternoon and slips back to 11°C overnight — a 12°C spread between the day's warmth and the night's chill. On most days the high lands between 19°C and 26°C. Set against its neighbours, December runs about 3°C warmer than November and about 2°C cooler than January.

10°15°20°25°30°151015202531
Avg high (°C)Avg low (°C)
12210
22210
32210
42210
52210
62210
72210
82210
92210
102210
112210
122211
132311
142311
152311
162311
172311
182311
192311
202311
212311
222311
232311
242311
252311
262411
272411
282411
292411
302412
312412

Coelemu 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
Jan25° / 12°51.114.29.3
Feb24° / 12°111.413.49.2
Mar22° / 11°172.412.38.5
Apr18° / 444.911.16.8
May15° / 1289.310.14.5
Jun13° / 181139.63.1
Jul12° / 13611.59.83.1
Aug13° / 11510.810.63.7
Sep15° / 616.611.85.0
Oct17° / 42612.96.3
Nov20° / 192.913.97.8
Dec23° / 11°132.214.48.7

Cloud cover in December

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 73% of the time in December.

Beyond those clear spells, partly cloudy skies cover about 12% of December, with mostly cloudy or overcast conditions the remaining 15%. Skies tend to open up as the month goes on.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
18119
28119
38119
48218
58218
68218
78218
88317
98317
108317
118317
128416
138416
148416
158416
168416
178515
188515
198515
208515
218614
228614
238614
248614
258812
268812
278812
288911
298911
308911
318911

Chance of precipitation in December

Any precipitation

Coelemu gets around 13 mm of rain over 2.2 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 7% and peaks near 9% on the wettest days.

0%10%20%30%151015202531
Rain chance (%)
19
29
39
49
58
68
78
88
98
107
117
127
136
146
156
166
176
186
196
206
216
226
236
246
256
265
275
285
295
305
315

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 92% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)
1964
2955
3955
4955
5955
6955
7946
8946
9946
10946
11946
12946
13946
14946
15946
16946
17937
18937
19928
20928
21919
229010
239010
248911
258812
268812
278713
288713
298614
308614
318614

Wind in December

Winds average 12 km/h in December, the windiest month of the year.

Across December, daily wind ranges from about 12 km/h on the calmest days to 12 km/h at its breeziest. It stays fairly steady from day to day.

051015151015202531
Wind speed (km/h)Feels
112light breeze
212light breeze
312light breeze
412light breeze
512light breeze
612light breeze
712light breeze
812light breeze
912light breeze
1012light breeze
1112light breeze
1212light breeze
1312light breeze
1412light breeze
1512light breeze
1612light breeze
1712light breeze
1812light breeze
1912light breeze
2012light breeze
2112light breeze
2212light breeze
2312light breeze
2412light breeze
2512light breeze
2612light breeze
2712light breeze
2812light breeze
2912light breeze
3012light breeze
3112light breeze

Sunrise & sunset in December

DaylightNight

Daylight runs from about 14 h 18 min at the start of December to 14 h 30 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 6:31 AM to 6:40 AM, and sunset from 8:50 PM to 9:08 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
114.36:318:50
214.36:318:51
314.36:318:52
414.46:318:52
514.46:318:53
614.46:318:54
714.46:318:55
814.46:318:56
914.46:318:56
1014.46:318:57
1114.46:318:58
1214.56:328:59
1314.56:328:59
1414.56:329:00
1514.56:329:01
1614.56:339:01
1714.56:339:02
1814.56:339:03
1914.56:349:03
2014.56:349:04
2114.56:359:04
2214.56:359:05
2314.56:359:05
2414.56:369:05
2514.56:369:06
2614.56:379:06
2714.56:389:07
2814.56:389:07
2914.56:399:07
3014.56:409:08
3114.56:409:08

Solar energy in December

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in December, about 8.68 kWh/m² — the sunniest month for solar.

For context, solar energy here swings from a low near 1.89 kWh/m² to a high of 8.68 kWh/m² in December across the year — December's 8.68 kWh/m² sits near the top of that range.

02468151015202531
Solar energy (kWh/m²)Level
18.4Intense
28.4Intense
38.5Intense
48.5Intense
58.5Intense
68.5Intense
78.5Intense
88.6Intense
98.6Intense
108.6Intense
118.6Intense
128.6Intense
138.6Intense
148.7Intense
158.7Intense
168.7Intense
178.7Intense
188.7Intense
198.7Intense
208.8Intense
218.8Intense
228.8Intense
238.8Intense
248.8Intense
258.8Intense
268.8Intense
278.8Intense
288.8Intense
298.8Intense
308.8Intense
318.8Intense
Planning a trip in December

Hazard calendar for Coelemu

In seasonPeak

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

Coelemu'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 Coelemu?

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

8.7
Sightseeing
3rd-best month of the year
6.5
Beach & pool
3rd-best month of the year

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

What to pack for Coelemu in December

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

In December, Coelemu sees daytime highs around 23°C and nights near 11°C. Pack sun protection. Worth having: light clothes.

sun protectionlight clothes

Sea temperature near Coelemu in December

The nearest coast averages about 14°C in December — 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 January 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
Feb15Bracing
Mar15Bracing
Apr14Bracing
May13Bracing
Jun13Bracing
Jul12Bracing
Aug12Bracing
Sep12Bracing
Oct13Bracing
Nov13Bracing
Dec14Bracing

UV index in Coelemu 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 Coelemu peaks around January 15 at about 12 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near June 16 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 12Jun 16UV 2
UV index (midday)Level
Jan13Extreme
Feb11Extreme
Mar9Very high
Apr5High
May3Moderate
Jun2Moderate
Jul3Moderate
Aug3Moderate
Sep5High
Oct8Very high
Nov10Very high
Dec12Extreme

Air quality in Coelemu 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 Coelemu is worst in February — around 35 µg/m³ PM2.5 (poor), about 3.8× the cleanest month (December, 9 µg/m³).

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

010203040JanFebMarAprMayJunJulAugSepOctNovDecModerateGoodFeb 1533 µg/m³Dec 109 µg/m³
PM2.5 (µg/m³)Level
Jan16Moderate
Feb35Poor
Mar17Moderate
Apr20Moderate
May29Moderate
Jun17Moderate
Jul16Moderate
Aug16Moderate
Sep15Moderate
Oct12Moderate
Nov10Good
Dec9Good
Location & terrain

Where is Coelemu?

Coelemu sits at 36.5°S, 72.7°W, 37 m above sea level, in Chile. The nearest listed city is Tomé, 27 km away.

Topography around Coelemu

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

Within 3 km, the terrain around Coelemu has only modest variations in elevation — a maximum elevation change of 192 m around an average of 59 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 582 m; within 80 km, large variations in elevation — a maximum elevation change of 887 m.

The land around Coelemu is covered by trees (57%) within 3 km, trees (72%) and grassland (21%) within 16 km, and trees (39%), water (27%) and grassland (20%) within 80 km.

3 km
192 m
16 km
582 m
80 km
887 m
treesgrasslandcroplandartificial surfaceswater
December weather nearby: Tomé 27 km · Quillón 35 km · Penco 38 km · Talcahuano 45 km · Concepción 49 km · Hualpén 49 km · San Pedro de la Paz 53 km · Chillán Viejo 53 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 Coelemu (-36.4874°, -72.7032°, elevation 37 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. 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).