Rolim de Moura do Guaporé weather in December

In December, Rolim de Moura do Guaporé sees average daytime highs of 31°C and overnight lows near 23°C, with 262 mm of rain across 27 wet days and about 12.8 hours of daylight. It is the 6th-warmest and 3rd-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 3% of the time in December, and the air most often feels oppressive.

Daylight stretches from about 12 h 42 min at the start of December to 12 h 48 min by month's end. Set against the rest of the year, December is Rolim de Moura do Guaporé's 9th-clearest and 4th-windiest month. For the whole year in context, see Rolim de Moura do Guaporé's year-round climate.

Daytime high
31°
6th warmest
Overnight low
23°
12th coldest
Rainfall
262 mm
27 wet days
Daylight
12 h 48 min
5:42 AM – 6:28 PM
Cloud cover
84%
9th clearest
Wind
6 km/h
4th windiest
Solar energy
5.11 kWh/m²
Travel score
2.7
out of 10

Rolim de Moura do Guaporé is human settlement 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 Rolim de Moura do Guaporé 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 Rolim de Moura do Guaporé

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.

Rolim de Moura do Guaporé weather by month

How December compares with the rest of the year at a glance. December is the 6th-warmest and 3rd-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan30° / 23°27527.812.72.7
Feb30° / 23°26925.312.42.8
Mar30° / 23°25627.412.12.8
Apr30° / 22°14319.711.73.6
May30° / 21°701211.44.9
Jun30° / 20°213.811.25.9
Jul31° / 19°122.311.35.8
Aug32° / 20°24411.64.6
Sep33° / 22°7111.111.93.4
Oct32° / 23°14819.912.32.9
Nov31° / 23°21223.412.62.8
Dec31° / 23°2622712.82.7

Cloud cover in December

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 3% 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 89%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
1892
2991
3991
4991
5991
6991
71090
81090
91090
101189
111189
121189
131189
141189
151189
161288
171288
181288
191288
201288
211288
221288
231288
241288
251189
261189
271189
281189
29991
30991
31991

Chance of precipitation in December

Any precipitation

Rolim de Moura do Guaporé gets around 262 mm of rain over 27 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 87% and peaks near 89% on the wettest days.

0%20%40%60%80%100%151015202531
Rain chance (%)
184
284
384
484
585
685
785
885
985
1086
1186
1286
1386
1486
1587
1687
1787
1887
1987
2088
2188
2288
2388
2488
2588
2688
2788
2889
2989
3089
3189

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 76% of days. Sticky, muggy-or-worse air turns up on roughly 99% of them.

0%25%50%75%100%151015202531
Humid (%)Muggy (%)Oppressive (%)Miserable (%)
1017326
2017326
3017425
4017425
5007525
6007525
7007525
8007525
9007525
10017425
11017524
12017524
13017524
14117424
15117424
16117424
17127324
18127423
19127423
20127423
21127522
22027721
23027721
24017920
25017920
26017920
27018019
28018019
29018019
30018019
31018019

Wind in December

Winds average 6 km/h in December.

Across December, daily wind ranges from about 6 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
16calm
26calm
36calm
46calm
56calm
66calm
76calm
86calm
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 42 min at the start of December to 12 h 48 min by month's end. The lit band spans sunrise to sunset each day.

Days grow by about 6 minutes over December. Sunrise moves from 5:37 AM to 5:49 AM, and sunset from 6:20 PM to 6:35 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
112.75:376:20
212.75:386:21
312.75:386:21
412.75:386:22
512.75:386:22
612.75:396:23
712.75:396:24
812.75:396:24
912.75:406:25
1012.85:406:25
1112.85:406:26
1212.85:416:26
1312.85:416:27
1412.85:416:27
1512.85:426:28
1612.85:426:28
1712.85:436:29
1812.85:436:29
1912.85:446:30
2012.85:446:30
2112.85:446:31
2212.85:456:31
2312.85:456:32
2412.85:466:32
2512.85:466:33
2612.85:476:33
2712.85:476:33
2812.85:486:34
2912.85:486:34
3012.85:496:35
3112.85:496:35

Solar energy in December

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in December, about 5.11 kWh/m².

For context, solar energy here swings from a low near 4.37 kWh/m² to a high of 5.76 kWh/m² in October across the year — December's 5.11 kWh/m² falls in the middle.

0246151015202531
Solar energy (kWh/m²)Level
15.2Bright
25.1Bright
35.1Bright
45.1Bright
55.1Bright
65.1Bright
75.1Bright
85.1Bright
95.1Bright
105.1Bright
115.1Bright
125.1Bright
135.1Bright
145.1Bright
155.1Bright
165.1Bright
175.1Bright
185.1Bright
195.1Bright
205.1Bright
215.1Bright
225.1Bright
235.1Bright
245.1Bright
255.1Bright
265.1Bright
275.1Bright
285.1Bright
295.1Bright
305.0Bright
315.0Bright
Planning a trip in December

Hazard calendar for Rolim de Moura do Guaporé

In seasonPeak

In December, Rolim de Moura do Guaporé sits inside its monsoon season. The full year is below, with each hazard's peak months called out.

Rolim de Moura do Guaporé's monsoon runs October–April, when most of the year's rain falls.

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

Is December a good time to visit Rolim de Moura do Guaporé?

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

2.7
Sightseeing
11th-best month of the year
4.0
Beach & pool
9th-best month of the year

December is a weaker month for outdoor sightseeing in Rolim de Moura do Guaporé.

What to pack for Rolim de Moura do Guaporé in December

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

In December, Rolim de Moura do Guaporé sees daytime highs around 31°C and nights near 23°C. Pack light clothes and rain gear. Worth having: sun protection. About 27 days see rain.

light clothesrain gearsun protection

UV index in Rolim de Moura do Guaporé in December

LowModerateHighVery highExtreme

Clear-sky midday UV in December peaks around 14 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Rolim de Moura do Guaporé peaks around January 20 at about 15 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near September 15 at about 4 (moderate).

The index reaches 3 or more — the level where the WHO recommends sun protection — in 11 months of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeVery highModerateExtremeJan 20UV 15Sep 15UV 4
UV index (midday)Level
Jan16Extreme
Feb15Extreme
Mar14Extreme
Apr12Extreme
May10Very high
Jun8Very high
Jul8Very high
Aug8Very high
Sep3Moderate
Oct9Very high
Nov14Extreme
Dec14Extreme

Air quality in Rolim de Moura do Guaporé 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 Rolim de Moura do Guaporé is worst in September — around 72 µg/m³ PM2.5 (unhealthy), about 9.5× the cleanest month (July, 8 µg/m³).

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

020406080JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateUnhealthyPoorModerateSep 1869 µg/m³Jul 98 µg/m³
PM2.5 (µg/m³)Level
Jan11Good
Feb11Good
Mar11Good
Apr9Good
May8Good
Jun8Good
Jul8Good
Aug36Poor
Sep72Unhealthy
Oct50Poor
Nov26Moderate
Dec13Moderate
Location & terrain

Where is Rolim de Moura do Guaporé?

Rolim de Moura do Guaporé sits at 13.1°S, 62.3°W, 159 m above sea level, in Brazil. The nearest listed city is Alta Floresta d'Oeste, 129 km away.

Topography around Rolim de Moura do Guaporé

How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Rolim de Moura do Guaporé.

Within 3 km, the terrain around Rolim de Moura do Guaporé has only modest variations in elevation — a maximum elevation change of 28 m around an average of 154 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 196 m; within 80 km, significant variations in elevation — a maximum elevation change of 523 m.

The land around Rolim de Moura do Guaporé is covered by trees (58%) and wetland (27%) within 3 km, trees (58%) and wetland (34%) within 16 km, and trees (69%) and wetland (21%) within 80 km.

3 km
28 m
16 km
196 m
80 km
523 m
treesgrasslandwaterwetland
December weather nearby: Alta Floresta d'Oeste 129 km · Rolim de Moura 151 km · Cerejeiras 159 km · São Miguel do Guaporé 161 km · São Francisco do Guaporé 181 km · Colorado do Oeste 188 km · Pimenta Bueno 196 km · Cacoal 204 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 Rolim de Moura do Guaporé (-13.0827°, -62.2773°, elevation 159 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).