Pires do Rio weather in December

In December, Pires do Rio sees average daytime highs of 29°C and overnight lows near 20°C, with 255 mm of rain across 24.1 wet days and about 13 hours of daylight. It is the 9th-warmest and 1st-wettest month of the year here.

Day-to-day highs hold fairly steady near 29°C through the month. The sky is clear or mostly clear about 9% of the time in December, and the air most often feels muggy.

Daylight stretches from about 13 hours at the start of December to 13 hours by month's end. Set against the rest of the year, December is Pires do Rio's 12th-clearest and 9th-windiest month. For the whole year in context, see Pires do Rio's year-round climate.

Daytime high
29°
9th warmest
Overnight low
20°
12th coldest
Rainfall
255 mm
24.1 wet days
Daylight
13 hours
6:38 AM – 7:40 PM
Cloud cover
79%
12th clearest
Wind
7 km/h
9th windiest
Solar energy
5.5 kWh/m²
Travel score
3.7
out of 10

Pires do Rio 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 29°C through the month.

A typical December day in Pires do Rio reaches about 29°C in the afternoon and slips back to 20°C overnight — a 9°C spread between the day's warmth and the night's chill. On most days the high lands between 26°C and 32°C. Set against its neighbours, December runs on par with November and on par with January.

15°20°25°30°35°151015202531
Avg high (°C)Avg low (°C)
12920
22920
32920
42920
52920
62920
72920
82920
92920
102920
112920
122920
132920
142920
152920
162920
172920
182920
192920
202920
212920
222920
232920
242920
252920
262920
272920
282920
292920
302920
312920

Pires do Rio weather by month

How December compares with the rest of the year at a glance. December is the 9th-warmest and 1st-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan29° / 20°23921.912.93.9
Feb29° / 20°17518.312.64.1
Mar29° / 20°17219.412.14.3
Apr29° / 19°6810.211.65.6
May28° / 17°172.611.27.4
Jun27° / 15°60.9118.2
Jul28° / 15°20.311.18.2
Aug30° / 16°61.111.46.7
Sep31° / 19°325.411.95.0
Oct31° / 20°10413.712.44.1
Nov29° / 20°20921.612.83.8
Dec29° / 20°25524.1133.7

Cloud cover in December

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 9% of the time in December, the cloudiest month of the year.

Beyond those clear spells, partly cloudy skies cover about 11% of December, with mostly cloudy or overcast conditions the remaining 80%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
12278
22080
31981
41981
51783
61684
71684
81585
91684
101684
111684
121684
131783
141783
151981
162080
172080
182278
192278
202278
212476
222476
232476
242476
252377
262377
272377
282377
292278
302278
312278

Chance of precipitation in December

Any precipitation

Pires do Rio gets around 255 mm of rain over 24.1 wet days in December, the wettest month. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 77% and peaks near 82% on the wettest days. The odds ease toward the end of the month.

0%20%40%60%80%151015202531
Rain chance (%)
179
280
380
481
581
682
782
881
981
1081
1180
1279
1379
1478
1577
1676
1776
1875
1975
2074
2174
2274
2374
2474
2574
2674
2774
2874
2974
3074
3174

Humidity in December

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, December lands in the muggy band about 81% of days. Sticky, muggy-or-worse air turns up on roughly 82% of them.

0%25%50%75%100%151015202531
Comfortable (%)Humid (%)Muggy (%)Oppressive (%)
1217810
2216820
3215830
4115840
5114841
6114841
7114841
8114841
9115831
10115831
11115831
12116821
13116821
14117811
15117811
16117811
17118801
18118801
19119791
20119791
21119791
22119791
23119791
24119791
25118801
26118801
27118801
28117811
29117811
30117811
31117811

Wind in December

Winds average 7 km/h in December.

Across December, daily wind ranges from about 7 km/h on the calmest days to 7 km/h at its breeziest. It stays fairly steady from day to day.

0246810151015202531
Wind speed (km/h)Feels
17calm
27calm
37calm
47calm
57calm
67calm
77calm
87calm
97calm
107calm
117calm
127calm
137calm
147calm
157calm
167calm
177calm
187calm
197calm
207calm
217calm
227calm
237calm
247calm
257calm
267calm
277calm
287calm
297calm
307calm
317calm

Sunrise & sunset in December

DaylightNight

Daylight runs from about 13 hours at the start of December to 13 hours by month's end. The lit band spans sunrise to sunset each day.

Days grow by about 0 minutes over December. Sunrise moves from 6:34 AM to 6:46 AM, and sunset from 7:32 PM to 7:47 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
113.06:347:32
213.06:347:32
313.06:347:33
413.06:357:33
513.06:357:34
613.06:357:35
713.06:357:35
813.06:367:36
913.06:367:36
1013.06:367:37
1113.06:377:37
1213.06:377:38
1313.06:377:39
1413.06:387:39
1513.06:387:40
1613.06:387:40
1713.06:397:41
1813.06:397:41
1913.06:407:42
2013.06:407:42
2113.06:417:43
2213.06:417:43
2313.06:427:44
2413.06:427:44
2513.06:437:44
2613.06:437:45
2713.06:447:45
2813.06:447:46
2913.06:457:46
3013.06:457:47
3113.06:467:47

Solar energy in December

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in December, about 5.5 kWh/m².

For context, solar energy here swings from a low near 4.45 kWh/m² to a high of 6.19 kWh/m² in October across the year — December's 5.5 kWh/m² falls in the middle.

0246151015202531
Solar energy (kWh/m²)Level
15.3Bright
25.3Bright
35.3Bright
45.3Bright
55.3Bright
65.3Bright
75.3Bright
85.3Bright
95.3Bright
105.3Bright
115.3Bright
125.4Bright
135.4Bright
145.4Bright
155.5Bright
165.5Bright
175.5Bright
185.5Bright
195.6Bright
205.6Bright
215.6Bright
225.6Bright
235.6Bright
245.7Bright
255.7Bright
265.6Bright
275.6Bright
285.6Bright
295.6Bright
305.6Bright
315.6Bright
Planning a trip in December

Hazard calendar for Pires do Rio

In seasonPeak

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

Pires do Rio's monsoon runs November–March, 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 Pires do Rio?

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

3.7
Sightseeing
12th-best month of the year
4.6
Beach & pool
12th-best month of the year

December is a weaker month for outdoor sightseeing in Pires do Rio.

What to pack for Pires do Rio in December

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

In December, Pires do Rio sees daytime highs around 29°C and nights near 20°C. Pack light clothes and rain gear. Worth having: sun protection. About 24 days see rain.

light clothesrain gearsun protection

UV index in Pires do Rio 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 Pires do Rio peaks around February 13 at about 15 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near June 21 at about 8 (very high).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeVery highExtremeFeb 13UV 15Jun 21UV 8
UV index (midday)Level
Jan15Extreme
Feb16Extreme
Mar14Extreme
Apr12Extreme
May9Very high
Jun8Very high
Jul8Very high
Aug10Very high
Sep12Extreme
Oct13Extreme
Nov14Extreme
Dec14Extreme
Location & terrain

Where is Pires do Rio?

Pires do Rio sits at 17.3°S, 48.3°W, 770 m above sea level, in Brazil. The nearest listed city is Orizona, 30 km away.

Topography around Pires do Rio

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

Within 3 km, the terrain around Pires do Rio has only modest variations in elevation — a maximum elevation change of 147 m around an average of 729 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 341 m; within 80 km, large variations in elevation — a maximum elevation change of 608 m.

The land around Pires do Rio is covered by grassland (38%), trees (25%) and artificial surfaces (22%) within 3 km, grassland (43%), trees (28%) and cropland (26%) within 16 km, and cropland (34%), grassland (33%) and trees (27%) within 80 km.

3 km
147 m
16 km
341 m
80 km
608 m
treesshrubsgrasslandcroplandartificial surfaceswater
December weather nearby: Orizona 30 km · Ipameri 49 km · Caldas Novas 62 km · Piracanjuba 78 km · Silvânia 79 km · Bela Vista de Goiás 80 km · Cristalina 92 km · Morrinhos 99 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 Pires do Rio (-17.2997°, -48.2794°, elevation 770 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. Topography is sampled from the Copernicus DEM GLO-90 elevation model (© ESA/Airbus) and ESA WorldCover 2021 land cover (CC BY 4.0).