Cruzeiro do Sul weather in December

In December, Cruzeiro do Sul sees average daytime highs of 31°C and overnight lows near 23°C, with 243 mm of rain across 26.4 wet days and about 12.4 hours of daylight. It is the 5th-warmest and 2nd-wettest month of the year here.

Day-to-day highs hold fairly steady near 31°C through the month. The sky is clear or mostly clear about 1% of the time in December, and the air most often feels oppressive.

Daylight stretches from about 12 h 24 min at the start of December to 12 h 24 min by month's end. Set against the rest of the year, December is Cruzeiro do Sul's 9th-clearest and 1st-windiest month. For the whole year in context, see Cruzeiro do Sul's year-round climate.

Daytime high
31°
5th warmest
Overnight low
23°
12th coldest
Rainfall
243 mm
26.4 wet days
Daylight
12 h 24 min
5:34 AM – 6:00 PM
Cloud cover
85%
9th clearest
Wind
6 km/h
1st windiest
Solar energy
4.8 kWh/m²
Travel score
2.8
out of 10

Cruzeiro do Sul is city in Brazil.

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 31°C through the month.

A typical December day in Cruzeiro do Sul reaches about 31°C in the afternoon and slips back to 23°C overnight — a 8°C spread between the day's warmth and the night's chill. On most days the high lands between 28°C and 33°C. Set against its neighbours, December runs on par with November and on par with January.

20°25°30°35°151015202531
Avg high (°C)Avg low (°C)
13123
23123
33123
43123
53123
63123
73123
83123
93123
103123
113123
123123
133123
143123
153123
163123
173123
183123
193123
203123
213123
223123
233123
243123
253123
263123
273123
283123
293123
303123
313123

How December really feels in Cruzeiro do Sul

Once humidity and wind are folded in, December averages 31 days that feel above 32°C and 0 that feel at or below 0°C — the comfort signal a plain temperature reading hides.

Days feeling ≥ 32°C
31
heat index over the day's high
Days feeling ≤ C
0
wind chill below the day's low

The story in December is heat — humidity pushes the afternoon "feels like" well above the raw temperature.

Cruzeiro do Sul weather by month

How December compares with the rest of the year at a glance. December is the 5th-warmest and 2nd-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan31° / 23°23925.412.42.9
Feb30° / 23°24223.612.32.9
Mar30° / 23°28327.512.12.8
Apr30° / 23°22224.411.83.0
May30° / 22°13420.611.73.7
Jun30° / 21°8115.311.64.4
Jul30° / 21°5611.911.64.7
Aug32° / 21°7112.911.73.9
Sep32° / 22°10917.1123.2
Oct32° / 23°17622.712.22.9
Nov31° / 23°22123.812.32.8
Dec31° / 23°24326.412.42.8

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 8% of December, with mostly cloudy or overcast conditions the remaining 91%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
1892
2892
3892
4892
5892
6892
7892
8892
9892
10892
11892
12892
13892
14892
15892
16892
17991
18991
19991
201090
211090
221090
231189
241189
251189
261189
271189
281189
291189
301090
311090

Chance of precipitation in December

Any precipitation

Cruzeiro do Sul gets around 243 mm of rain over 26.4 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 84% and peaks near 87% on the wettest days.

0%20%40%60%80%100%151015202531
Rain chance (%)
187
287
387
487
587
687
786
886
986
1086
1185
1285
1385
1484
1584
1684
1784
1883
1983
2083
2183
2283
2383
2483
2583
2683
2782
2882
2982
3081
3181

Humidity in December

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, December lands in the oppressive band about 88% of days. Sticky, muggy-or-worse air turns up on roughly 100% of them.

0%25%50%75%100%151015202531
Muggy (%)Oppressive (%)Miserable (%)
108416
208416
308515
408515
508515
608515
708614
808614
908713
1008713
1108713
1208812
1308812
1408812
1508911
1608911
1708911
1818811
1918910
2018910
2118910
2218910
2318910
241909
250919
260919
270919
280919
290919
301909
311909

Wind in December

Winds average 6 km/h in December, the windiest month of the year.

Across December, daily wind ranges from about 5 km/h on the calmest days to 6 km/h at its breeziest. It stays fairly steady from day to day.

0246810151015202531
Wind speed (km/h)Feels
15calm
25calm
35calm
45calm
55calm
65calm
75calm
85calm
96calm
106calm
116calm
126calm
136calm
146calm
156calm
166calm
176calm
186calm
196calm
206calm
216calm
226calm
236calm
246calm
256calm
266calm
276calm
286calm
296calm
306calm
316calm

Sunrise & sunset in December

DaylightNight

Daylight runs from about 12 h 24 min at the start of December to 12 h 24 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 5:28 AM to 5:41 AM, and sunset from 5:53 PM to 6:07 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
112.45:285:53
212.45:285:53
312.45:295:54
412.45:295:54
512.45:295:55
612.45:305:55
712.45:305:56
812.45:305:56
912.45:315:57
1012.45:315:57
1112.45:325:58
1212.45:325:58
1312.45:325:59
1412.45:335:59
1512.45:336:00
1612.45:346:00
1712.45:346:01
1812.45:356:01
1912.45:356:02
2012.45:356:02
2112.45:366:03
2212.45:366:03
2312.45:376:03
2412.45:376:04
2512.45:386:04
2612.45:386:05
2712.45:396:05
2812.45:396:06
2912.45:406:06
3012.45:406:07
3112.45:416:07

Solar energy in December

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in December, about 4.8 kWh/m².

For context, solar energy here swings from a low near 4.05 kWh/m² to a high of 5.29 kWh/m² in September across the year — December's 4.8 kWh/m² falls in the middle.

024151015202531
Solar energy (kWh/m²)Level
14.8Bright
24.8Bright
34.8Bright
44.8Bright
54.8Bright
64.8Bright
74.8Bright
84.8Bright
94.8Bright
104.8Bright
114.8Bright
124.8Bright
134.8Bright
144.8Bright
154.8Bright
164.8Bright
174.8Bright
184.8Bright
194.8Bright
204.8Bright
214.8Bright
224.8Bright
234.8Bright
244.8Bright
254.8Bright
264.8Bright
274.8Bright
284.8Bright
294.8Bright
304.8Bright
314.8Bright
Planning a trip in December

Is December a good time to visit Cruzeiro do Sul?

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

2.8
Sightseeing
10th-best month of the year
4.1
Beach & pool
10th-best month of the year

December is a weaker month for outdoor sightseeing in Cruzeiro do Sul.

What to pack for Cruzeiro do Sul in December

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

In December, Cruzeiro do Sul sees daytime highs around 31°C and nights near 23°C. Pack light clothes and rain gear. Worth having: sun protection. About 26 days see rain.

light clothesrain gearsun protection

UV index in Cruzeiro do Sul in December

LowModerateHighVery highExtreme

Clear-sky midday UV in December peaks around 13 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Cruzeiro do Sul peaks around February 14 at about 17 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near July 24 at about 9 (very high).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeVery highExtremeFeb 14UV 17Jul 24UV 9
UV index (midday)Level
Jan15Extreme
Feb17Extreme
Mar15Extreme
Apr12Extreme
May12Extreme
Jun10Very high
Jul9Very high
Aug9Very high
Sep10Extreme
Oct13Extreme
Nov13Extreme
Dec13Extreme

Air quality in Cruzeiro do Sul 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 Cruzeiro do Sul is worst in September — around 48 µg/m³ PM2.5 (poor), about 6.8× the cleanest month (June, 7 µg/m³).

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

0204060JanFebMarAprMayJunJulAugSepOctNovDecModerateGoodModeratePoorModerateGoodSep 1545 µg/m³Jun 117 µg/m³
PM2.5 (µg/m³)Level
Jan13Moderate
Feb15Moderate
Mar13Moderate
Apr10Good
May8Good
Jun7Good
Jul10Good
Aug26Moderate
Sep48Poor
Oct15Moderate
Nov13Moderate
Dec11Good
Location & terrain

Where is Cruzeiro do Sul?

Cruzeiro do Sul sits at 7.6°S, 72.7°W, 195 m above sea level, in Brazil. The nearest listed city is Mâncio Lima, 24 km away.

ContamanaFeijó

Topography around Cruzeiro do Sul

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

Within 3 km, the terrain around Cruzeiro do Sul has only modest variations in elevation — a maximum elevation change of 65 m around an average of 190 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 103 m; within 80 km, only modest variations in elevation — a maximum elevation change of 146 m.

The land around Cruzeiro do Sul is covered by trees (62%) and artificial surfaces (22%) within 3 km, trees (72%) and grassland (24%) within 16 km, and trees (95%) within 80 km.

3 km
65 m
16 km
103 m
80 km
146 m
treesgrasslandartificial surfacesbare terrainwater
December weather nearby: Mâncio Lima 24 km · Ipixuna 126 km · Marechal Thaumaturgo 147 km · Tarauacá 219 km · San Fernando 222 km · Pucallpa 223 km · Contamana 260 km · Feijó 263 km

Brazil travel facts

Travel advisory
Level 2
Exercise Increased Caution
Power plugs
Type C / N
127 / 220 V · 60 Hz
Prices
≈ 46% of US
price level, 2025
GDP per capita
$10,713
2025
Happiness
6.6 / 10
World Happiness, 2025
Safe drinking water
89%
of population, 2024
Homicide rate
19.3
per 100k, 2023
Road deaths
16
per 100k/yr, 2019
Income group
Upper middle
World Bank
English
Low
EF EPI 482
Religion
Roman Catholic 57%Evangelical 27%none 9%other 4%

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 Cruzeiro do Sul (-7.6276°, -72.6776°, elevation 195 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).