Macas weather in December

In December, Macas sees average daytime highs of 24°C and overnight lows near 17°C, with 314 mm of rain across 29.3 wet days and about 12.1 hours of daylight. It is the 5th-warmest and 7th-wettest month of the year here.

Day-to-day highs hold fairly steady near 24°C through the month. The sky is clear or mostly clear about 1% of the time in December, and the air most often feels humid.

Daylight stretches from about 12 h 06 min at the start of December to 12 h 06 min by month's end. Set against the rest of the year, December is Macas's 7th-clearest and 1st-windiest month. For the whole year in context, see Macas's year-round climate.

Daytime high
24°
5th warmest
Overnight low
17°
9th coldest
Rainfall
314 mm
29.3 wet days
Daylight
12 h 06 min
6:05 AM – 6:13 PM
Cloud cover
84%
7th clearest
Wind
4 km/h
1st windiest
Solar energy
4.51 kWh/m²
Travel score
3.8
out of 10

Macas is city in Ecuador, capital of the Morona-Santiago Province.

Density
1,992/km²
people per km²
Founded
1563

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

Temperature in December

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 24°C through the month.

A typical December day in Macas reaches about 24°C in the afternoon and slips back to 17°C overnight — a 7°C spread between the day's warmth and the night's chill. On most days the high lands between 22°C and 26°C. Set against its neighbours, December runs on par with November and on par with January.

15°20°25°30°151015202531
Avg high (°C)Avg low (°C)
12417
22417
32417
42417
52417
62417
72417
82417
92417
102417
112417
122417
132417
142417
152417
162417
172417
182417
192417
202417
212417
222417
232417
242417
252417
262417
272417
282417
292417
302417
312417

Macas weather by month

How December compares with the rest of the year at a glance. December is the 5th-warmest and 7th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan24° / 17°30327.612.14.0
Feb24° / 17°33525.512.13.9
Mar24° / 17°38230.5123.5
Apr24° / 17°39029123.6
May24° / 17°42929.811.93.7
Jun23° / 16°40328.911.93.6
Jul22° / 15°36929.111.93.7
Aug23° / 15°29327.811.94.0
Sep24° / 16°26328.2123.9
Oct24° / 16°29030.212.13.7
Nov24° / 17°3092912.13.6
Dec24° / 17°31429.312.13.8

Cloud cover in December

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 1% of the time in December.

Beyond those clear spells, partly cloudy skies cover about 5% of December, with mostly cloudy or overcast conditions the remaining 94%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
1694
2694
3694
4694
5694
6694
7694
8595
9595
10595
11595
12595
13496
14496
15496
16595
17595
18595
19595
20595
21694
22694
23694
24793
25793
26892
27892
28991
291090
301090
311090

Chance of precipitation in December

Any precipitation

Macas gets around 314 mm of rain over 29.3 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 94% and peaks near 96% on the wettest days. The odds ease toward the end of the month.

0%20%40%60%80%100%151015202531
Rain chance (%)
196
296
396
496
596
696
796
896
996
1096
1196
1296
1396
1496
1595
1695
1795
1895
1995
2094
2194
2293
2393
2492
2592
2691
2790
2890
2989
3089
3188

Humidity in December

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, December lands in the humid band about 90% of days. Sticky, muggy-or-worse air turns up on roughly 8% of them.

0%25%50%75%100%151015202531
Comfortable (%)Humid (%)Muggy (%)
108713
208713
308812
408812
508911
609010
70919
80919
90928
100928
110937
120937
131927
141927
151936
161936
171936
181927
191927
201927
212917
222917
232917
242908
253898
263898
273898
283898
294888
304888
314879

Wind in December

Winds average 4 km/h in December, the windiest month of the year.

Across December, daily wind ranges from about 4 km/h on the calmest days to 4 km/h at its breeziest. It stays fairly steady from day to day.

0246810151015202531
Wind speed (km/h)Feels
14calm
24calm
34calm
44calm
54calm
64calm
74calm
84calm
94calm
104calm
114calm
124calm
134calm
144calm
154calm
164calm
174calm
184calm
194calm
204calm
214calm
224calm
234calm
244calm
254calm
264calm
274calm
284calm
294calm
304calm
314calm

Sunrise & sunset in December

DaylightNight

Daylight runs from about 12 h 06 min at the start of December to 12 h 06 min by month's end. The lit band spans sunrise to sunset each day.

Days grow by about 0 minutes over December. Sunrise moves from 5:59 AM to 6:12 AM, and sunset from 6:06 PM to 6:20 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
112.15:596:06
212.15:596:06
312.15:596:07
412.16:006:07
512.16:006:08
612.16:006:08
712.16:016:08
812.16:016:09
912.16:026:09
1012.16:026:10
1112.16:026:10
1212.16:036:11
1312.16:036:11
1412.16:046:12
1512.16:046:12
1612.16:056:13
1712.16:056:13
1812.16:066:14
1912.16:066:14
2012.16:076:15
2112.16:076:15
2212.16:076:15
2312.16:086:16
2412.16:086:16
2512.16:096:17
2612.16:096:17
2712.16:106:18
2812.16:106:18
2912.16:116:19
3012.16:116:19
3112.16:126:20

Solar energy in December

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in December, about 4.51 kWh/m².

For context, solar energy here swings from a low near 3.45 kWh/m² to a high of 5.07 kWh/m² in October across the year — December's 4.51 kWh/m² falls in the middle.

024151015202531
Solar energy (kWh/m²)Level
14.6Bright
24.6Bright
34.6Bright
44.6Bright
54.6Bright
64.6Bright
74.6Bright
84.6Bright
94.6Bright
104.5Bright
114.5Bright
124.5Bright
134.5Bright
144.5Bright
154.5Bright
164.5Bright
174.5Bright
184.5Bright
194.5Bright
204.5Bright
214.5Bright
224.5Bright
234.5Bright
244.5Bright
254.5Bright
264.5Bright
274.5Bright
284.5Bright
294.5Bright
304.5Bright
314.5Bright
Planning a trip in December

Is December a good time to visit Macas?

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

3.8
Sightseeing
5th-best month of the year
3.3
Beach & pool
4th-best month of the year

December is a weaker month for outdoor sightseeing in Macas.

What to pack for Macas in December

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

In December, Macas sees daytime highs around 24°C and nights near 17°C. Pack rain gear. Worth having: light clothes and sun protection. About 29 days see rain.

rain gearlight clothessun protection

UV index in Macas 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 Macas peaks around February 17 at about 16 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near August 12 at about 11 (extreme).

The index reaches 3 or more — the level where the WHO recommends sun protection — every month of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeFeb 17UV 16Aug 12UV 11
UV index (midday)Level
Jan15Extreme
Feb16Extreme
Mar16Extreme
Apr12Extreme
May14Extreme
Jun12Extreme
Jul11Extreme
Aug11Extreme
Sep13Extreme
Oct14Extreme
Nov12Extreme
Dec12Extreme

Air quality in Macas 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 Macas is worst in February — around 29 µg/m³ PM2.5 (moderate), about 2.4× the cleanest month (July, 12 µg/m³).

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

010203040JanFebMarAprMayJunJulAugSepOctNovDecModerateFeb 1929 µg/m³Jul 1113 µg/m³
PM2.5 (µg/m³)Level
Jan24Moderate
Feb29Moderate
Mar27Moderate
Apr22Moderate
May18Moderate
Jun14Moderate
Jul12Moderate
Aug20Moderate
Sep18Moderate
Oct21Moderate
Nov19Moderate
Dec20Moderate
Location & terrain

Where is Macas?

Macas sits at 2.3°S, 78.1°W, 1,315 m above sea level, in Ecuador. The nearest listed city is Guamote, 78 km away.

BanosCuencaPelileo

Topography around Macas

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

Within 3 km, the terrain around Macas has significant variations in elevation — a maximum elevation change of 570 m around an average of 1,028 m above sea level; within 16 km, very significant variations in elevation — a maximum elevation change of 2,203 m; within 80 km, extreme variations in elevation — a maximum elevation change of 5,093 m.

The land around Macas is covered by trees (70%) within 3 km, trees (94%) within 16 km, and trees (83%) within 80 km.

3 km
570 m
16 km
2,203 m
80 km
5,093 m
treesshrubsgrasslandcroplandartificial surfaceswater
December weather nearby: Guamote 78 km · Puyo 92 km · Riobamba 93 km · Azogues 94 km · Gualaceo 98 km · Banos 107 km · Cuenca 117 km · Pelileo 118 km

Ecuador travel facts

Travel advisory
Level 2
Exercise Increased Caution
Power plugs
Type A / B
120 V · 60 Hz
Prices
≈ 43% of US
price level, 2025
GDP per capita
$7,125
2025
Happiness
6.1 / 10
World Happiness, 2025
Safe drinking water
70%
of population, 2024
Homicide rate
45.7
per 100k, 2023
Road deaths
20.1
per 100k/yr, 2019
Income group
Upper middle
World Bank
English
Low
EF EPI 466
Religion
Roman Catholic 68%Protestant 19%none 8%other 2%

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 Macas (-2.3074°, -78.1203°, elevation 1,315 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).