Jaciara weather in December

In December, Jaciara sees average daytime highs of 30°C and overnight lows near 22°C, with 307 mm of rain across 27.3 wet days and about 12.9 hours of daylight. It is the 7th-warmest and 1st-wettest month of the year here.

Day-to-day highs hold fairly steady near 30°C through the month. The sky is clear or mostly clear about 6% of the time in December, and the air most often feels oppressive.

Daylight stretches from about 12 h 54 min at the start of December to 12 h 54 min by month's end. Set against the rest of the year, December is Jaciara's 12th-clearest and 7th-windiest month. For the whole year in context, see Jaciara's year-round climate.

Daytime high
30°
7th warmest
Overnight low
22°
12th coldest
Rainfall
307 mm
27.3 wet days
Daylight
12 h 54 min
6:08 AM – 7:04 PM
Cloud cover
81%
12th clearest
Wind
6 km/h
7th windiest
Solar energy
5.6 kWh/m²
Travel score
2.9
out of 10

Jaciara is 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 30°C through the month.

A typical December day in Jaciara reaches about 30°C in the afternoon and slips back to 22°C overnight — a 8°C spread between the day's warmth and the night's chill. On most days the high lands between 27°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)
13022
23022
33022
43022
53022
63022
73022
83022
93022
103022
113022
123022
133022
143022
153022
163022
173022
183022
193022
203022
213022
223022
233022
243022
253022
263022
273022
283022
293022
303022
313022

How December really feels in Jaciara

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.

Jaciara weather by month

How December compares with the rest of the year at a glance. December is the 7th-warmest and 1st-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan30° / 22°30026.312.83.0
Feb30° / 22°26624.412.53.0
Mar30° / 22°25325.412.13.1
Apr30° / 21°1151511.74.3
May29° / 19°436.911.35.9
Jun29° / 18°111.611.16.7
Jul30° / 18°70.911.16.7
Aug32° / 19°152.611.55.2
Sep33° / 21°709.511.93.8
Oct32° / 22°18220.312.43.1
Nov31° / 22°24723.112.73.1
Dec30° / 22°30727.312.92.9

Cloud cover in December

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 6% of the time in December, the cloudiest month of the year.

Beyond those clear spells, partly cloudy skies cover about 12% of December, with mostly cloudy or overcast conditions the remaining 82%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
11783
21684
31684
41585
51585
61387
71486
81585
91585
101585
111684
121783
131783
141684
151882
161882
171981
181981
192080
202179
212080
222179
232179
242179
252179
262179
272080
281981
291981
302080
312080

Chance of precipitation in December

Any precipitation

Jaciara gets around 307 mm of rain over 27.3 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 87% and peaks near 89% on the wettest days.

0%20%40%60%80%100%151015202531
Rain chance (%)
186
287
388
488
589
689
789
889
989
1089
1189
1289
1388
1488
1588
1687
1787
1886
1986
2086
2186
2286
2386
2486
2587
2687
2787
2887
2987
3087
3187

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 87% of days. Sticky, muggy-or-worse air turns up on roughly 99% of them.

0%25%50%75%100%151015202531
Comfortable (%)Humid (%)Muggy (%)Oppressive (%)
1011485
2011485
3011386
4011287
5011287
6011287
7011188
8011188
9111187
10111187
11111286
12111286
13111286
14111286
15111286
16111385
17111385
18111385
19111385
20111385
21111385
22011287
23011287
24001288
25001189
26001189
27001090
28001090
2900991
3000991
3100991

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 54 min at the start of December to 12 h 54 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 6:03 AM to 6:15 AM, and sunset from 6:56 PM to 7:11 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
112.96:036:56
212.96:036:57
312.96:046:57
412.96:046:58
512.96:046:58
612.96:046:59
712.96:056:59
812.96:057:00
912.96:057:01
1012.96:057:01
1112.96:067:02
1212.96:067:02
1312.96:077:03
1412.96:077:03
1512.96:077:04
1612.96:087:04
1712.96:087:05
1812.96:097:05
1912.96:097:06
2012.96:097:06
2112.96:107:07
2213.06:107:07
2312.96:117:08
2412.96:117:08
2512.96:127:09
2612.96:127:09
2712.96:137:10
2812.96:137:10
2912.96:147:10
3012.96:147:11
3112.96:157:11

Solar energy in December

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in December, about 5.6 kWh/m².

For context, solar energy here swings from a low near 4.44 kWh/m² to a high of 6.01 kWh/m² in October across the year — December's 5.6 kWh/m² falls in the middle.

0246151015202531
Solar energy (kWh/m²)Level
15.6Bright
25.6Bright
35.5Bright
45.5Bright
55.5Bright
65.5Bright
75.5Bright
85.5Bright
95.5Bright
105.5Bright
115.5Bright
125.5Bright
135.5Bright
145.5Bright
155.6Bright
165.6Bright
175.6Bright
185.6Bright
195.7Bright
205.7Bright
215.7Bright
225.7Bright
235.7Bright
245.7Bright
255.7Bright
265.7Bright
275.7Bright
285.7Bright
295.7Bright
305.7Bright
315.7Bright
Planning a trip in December

Hazard calendar for Jaciara

In seasonPeak

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

Jaciara's monsoon runs October–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 Jaciara?

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

2.9
Sightseeing
12th-best month of the year
4.1
Beach & pool
12th-best month of the year

December is a weaker month for outdoor sightseeing in Jaciara.

What to pack for Jaciara in December

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

In December, Jaciara sees daytime highs around 30°C and nights near 22°C. Pack light clothes and rain gear. Worth having: sun protection. About 27 days see rain.

light clothesrain gearsun protection

UV index in Jaciara 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 Jaciara peaks around January 21 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 highExtremeJan 21UV 15Jun 21UV 8
UV index (midday)Level
Jan15Extreme
Feb15Extreme
Mar14Extreme
Apr12Extreme
May9Very high
Jun8Very high
Jul8Very high
Aug9Very high
Sep8Very high
Oct11Extreme
Nov13Extreme
Dec13Extreme

Air quality in Jaciara 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 Jaciara is worst in September — around 32 µg/m³ PM2.5 (moderate), about 7.1× the cleanest month (July, 5 µg/m³).

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

010203040JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateGoodSep 1630 µg/m³Jul 105 µg/m³
PM2.5 (µg/m³)Level
Jan8Good
Feb8Good
Mar7Good
Apr6Good
May6Good
Jun6Good
Jul5Good
Aug19Moderate
Sep32Moderate
Oct17Moderate
Nov9Good
Dec8Good
Location & terrain

Where is Jaciara?

Jaciara sits at 16.0°S, 55.0°W, 362 m above sea level, in Brazil. The nearest listed city is Campo Verde, 51 km away.

Topography around Jaciara

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

Within 3 km, the terrain around Jaciara has only modest variations in elevation — a maximum elevation change of 169 m around an average of 299 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 377 m; within 80 km, large variations in elevation — a maximum elevation change of 770 m.

The land around Jaciara is covered by grassland (41%), trees (37%) and artificial surfaces (20%) within 3 km, grassland (54%) and trees (33%) within 16 km, and trees (37%), grassland (35%) and cropland (23%) within 80 km.

3 km
169 m
16 km
377 m
80 km
770 m
treesshrubsgrasslandcroplandartificial surfaceswaterwetland
December weather nearby: Campo Verde 51 km · Poxoréu 64 km · Rondonópolis 66 km · Pedra Preta 90 km · Chapada dos Guimarães 101 km · Lucas 111 km · Santo Antônio do Leverger 119 km · Cuiabá 128 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 Jaciara (-15.9653°, -54.9683°, elevation 362 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).