Ji Paraná weather in December

In December, Ji Paraná sees average daytime highs of 30°C and overnight lows near 23°C, with 248 mm of rain across 26.7 wet days and about 12.6 hours of daylight. It is the 7th-warmest and 3rd-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 3% of the time in December, and the air most often feels oppressive.

Daylight stretches from about 12 h 36 min at the start of December to 12 h 36 min by month's end. Set against the rest of the year, December is Ji Paraná's 9th-clearest and 5th-windiest month. For the whole year in context, see Ji Paraná's year-round climate.

Daytime high
30°
7th warmest
Overnight low
23°
10th coldest
Rainfall
248 mm
26.7 wet days
Daylight
12 h 36 min
5:45 AM – 6:23 PM
Cloud cover
85%
9th clearest
Wind
6 km/h
5th windiest
Solar energy
5.03 kWh/m²
Travel score
3.0
out of 10

Ji Paraná 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 30°C through the month.

A typical December day in Ji Paraná reaches about 30°C in the afternoon and slips back to 23°C overnight — a 7°C spread between the day's warmth and the night's chill. On most days the high lands between 27°C and 32°C. Set against its neighbours, December runs about 1°C cooler than November and on par with January.

20°25°30°35°151015202531
Avg high (°C)Avg low (°C)
13023
23023
33023
43023
53023
63023
73023
83023
93023
103023
113023
123023
133023
143023
153023
163023
173023
183023
193023
203023
213023
223023
233023
243023
253023
263023
273023
283023
293023
303023
313023

How December really feels in Ji Paraná

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.

Ji Paraná weather by month

How December compares with the rest of the year at a glance. December is the 7th-warmest and 3rd-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan30° / 23°27028.512.62.9
Feb29° / 23°26126.112.42.9
Mar30° / 23°24127.812.12.9
Apr30° / 22°14822.311.83.4
May30° / 22°7814.311.54.5
Jun31° / 21°183.711.45.4
Jul32° / 20°11211.44.9
Aug34° / 21°244.511.63.8
Sep33° / 23°8013.411.93.1
Oct32° / 23°14319.912.22.9
Nov31° / 23°21224.312.52.9
Dec30° / 23°24826.712.63.0

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 7% of December, with mostly cloudy or overcast conditions the remaining 90%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
1991
21090
31090
4991
5991
6991
71090
81090
91090
101090
111189
121189
131189
141189
151288
161288
171189
181189
191189
201189
211189
221189
231090
241090
251090
26991
27991
28892
29892
30892
31793

Chance of precipitation in December

Any precipitation

Ji Paraná gets around 248 mm of rain over 26.7 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 86% and peaks near 89% on the wettest days.

0%20%40%60%80%100%151015202531
Rain chance (%)
184
284
385
485
585
685
785
885
985
1086
1186
1286
1386
1487
1587
1687
1787
1887
1987
2087
2187
2287
2387
2487
2587
2687
2788
2888
2988
3088
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 92% of days. Sticky, muggy-or-worse air turns up on roughly 100% of them.

0%25%50%75%100%151015202531
Muggy (%)Oppressive (%)Miserable (%)
109010
209010
309010
409010
509010
609010
709010
809010
909010
1018910
111909
121909
131909
141909
151918
161918
171918
181927
191927
201936
211936
221936
231936
241945
251945
260955
270955
280955
290955
300955
310946

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 36 min at the start of December to 12 h 36 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 5:40 AM to 5:52 AM, and sunset from 6:15 PM to 6:30 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
112.65:406:15
212.65:406:16
312.65:406:16
412.65:416:17
512.65:416:17
612.65:416:18
712.65:426:18
812.65:426:19
912.65:426:19
1012.65:436:20
1112.65:436:20
1212.65:436:21
1312.65:446:21
1412.65:446:22
1512.65:456:22
1612.65:456:23
1712.65:456:23
1812.65:466:24
1912.65:466:24
2012.65:476:25
2112.65:476:25
2212.65:486:26
2312.65:486:26
2412.65:496:27
2512.65:496:27
2612.65:506:28
2712.65:506:28
2812.65:516:29
2912.65:516:29
3012.65:526:29
3112.65:526:30

Solar energy in December

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in December, about 5.03 kWh/m².

For context, solar energy here swings from a low near 4.55 kWh/m² to a high of 5.87 kWh/m² in October across the year — December's 5.03 kWh/m² falls in the middle.

0246151015202531
Solar energy (kWh/m²)Level
15.1Bright
25.1Bright
35.1Bright
45.1Bright
55.1Bright
65.1Bright
75.1Bright
85.1Bright
95.1Bright
105.1Bright
115.1Bright
125.1Bright
135.1Bright
145.0Bright
155.0Bright
165.0Bright
175.0Bright
185.0Bright
195.0Bright
205.0Bright
215.0Bright
225.0Bright
235.0Bright
245.0Bright
255.0Bright
265.0Bright
275.0Bright
285.0Bright
294.9Bright
304.9Bright
314.9Bright
Planning a trip in December

Hazard calendar for Ji Paraná

In seasonPeak

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

Ji Paraná's rainy season runs October–April, when most of the year's rain falls.

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

Is December a good time to visit Ji Paraná?

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

3.0
Sightseeing
7th-best month of the year
4.1
Beach & pool
9th-best month of the year

December is a weaker month for outdoor sightseeing in Ji Paraná.

What to pack for Ji Paraná in December

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

In December, Ji Paraná sees daytime highs around 30°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 Ji Paraná 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 Ji Paraná peaks around January 23 at about 15 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near September 13 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 23UV 15Sep 13UV 4
UV index (midday)Level
Jan15Extreme
Feb15Extreme
Mar15Extreme
Apr14Extreme
May10Extreme
Jun9Very high
Jul9Very high
Aug7High
Sep3Moderate
Oct11Extreme
Nov13Extreme
Dec14Extreme

Air quality in Ji Paraná 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 Ji Paraná is worst in September — around 52 µg/m³ PM2.5 (poor), about 6.8× the cleanest month (June, 8 µg/m³).

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

0204060JanFebMarAprMayJunJulAugSepOctNovDecGoodGoodModeratePoorModerateSep 1449 µg/m³Jun 228 µg/m³
PM2.5 (µg/m³)Level
Jan12Good
Feb12Good
Mar12Moderate
Apr10Good
May9Good
Jun8Good
Jul8Good
Aug35Moderate
Sep52Poor
Oct22Moderate
Nov15Moderate
Dec13Moderate
Location & terrain

Where is Ji Paraná?

Ji Paraná sits at 10.9°S, 62.0°W, 157 m above sea level, in Brazil. The nearest listed city is Ouro Preto do Oeste, 33 km away.

Topography around Ji Paraná

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

Within 3 km, the terrain around Ji Paraná has only modest variations in elevation — a maximum elevation change of 53 m around an average of 151 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 166 m; within 80 km, significant variations in elevation — a maximum elevation change of 462 m.

The land around Ji Paraná is covered by artificial surfaces (43%) and trees (32%) within 3 km, grassland (67%) and trees (27%) within 16 km, and grassland (62%) and trees (37%) within 80 km.

3 km
53 m
16 km
166 m
80 km
462 m
treesgrasslandartificial surfacesbare terrainwater
December weather nearby: Ouro Preto do Oeste 33 km · Presidente Médici 33 km · Jaru 75 km · Cacoal 83 km · Rolim de Moura 103 km · Pimenta Bueno 120 km · Alta Floresta d'Oeste 120 km · São Miguel do Guaporé 122 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 Ji Paraná (-10.8853°, -61.9517°, elevation 157 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).