Ijuí weather in December

In December, Ijuí sees average daytime highs of 30°C and overnight lows near 19°C, with 179 mm of rain across 13.1 wet days and about 13.8 hours of daylight. It is the 2nd-warmest and 2nd-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 38% of the time in December, and the air most often feels muggy.

Daylight stretches from about 13 h 42 min at the start of December to 13 h 48 min by month's end. Set against the rest of the year, December is Ijuí's 6th-clearest and 7th-windiest month. For the whole year in context, see Ijuí's year-round climate.

Daytime high
30°
2nd warmest
Overnight low
19°
10th coldest
Rainfall
179 mm
13.1 wet days
Daylight
13 h 48 min
6:38 AM – 8:26 PM
Cloud cover
55%
6th clearest
Wind
12 km/h
7th windiest
Solar energy
6.62 kWh/m²
Travel score
4.8
out of 10

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 Ijuí reaches about 30°C in the afternoon and slips back to 19°C overnight — a 11°C spread between the day's warmth and the night's chill. On most days the high lands between 26°C and 34°C. Set against its neighbours, December runs about 2°C warmer than November and on par with January.

10°15°20°25°30°35°151015202531
Avg high (°C)Avg low (°C)
12918
22918
32918
43018
53018
63018
73018
83018
93018
103018
113019
123019
133019
143019
153019
163019
173019
183019
193019
203019
213019
223019
233019
243019
253019
263020
273020
283020
293020
303020
313020

Ijuí weather by month

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

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan30° / 20°17314.713.64.5
Feb29° / 19°14513.7134.8
Mar29° / 18°13611.712.25.6
Apr26° / 16°16210.111.36.7
May22° / 12°143910.66.9
Jun20° / 11°1449.810.26.3
Jul19° / 10°1579.910.46.3
Aug22° / 11°1088.8117.0
Sep23° / 13°15610.311.86.8
Oct26° / 15°23413.212.76.2
Nov28° / 17°1621113.45.9
Dec30° / 19°17913.113.84.8

Cloud cover in December

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 38% of the time in December.

Beyond those clear spells, partly cloudy skies cover about 17% of December, with mostly cloudy or overcast conditions the remaining 45%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
15644
25644
35545
45545
55545
65545
75545
85545
95545
105545
115545
125644
135545
145545
155644
165644
175644
185644
195644
205644
215644
225644
235545
245545
255446
265446
275446
285446
295545
305446
315446

Chance of precipitation in December

Any precipitation

Ijuí gets around 179 mm of rain over 13.1 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 42% and peaks near 46% on the wettest days. The odds climb toward the end of the month.

0%20%40%60%151015202531
Rain chance (%)
138
239
339
439
539
639
739
839
939
1039
1140
1240
1340
1440
1540
1641
1741
1841
1942
2042
2143
2243
2344
2445
2545
2646
2746
2846
2946
3046
3146

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 32% of days. Sticky, muggy-or-worse air turns up on roughly 45% of them.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)
1152330283
2152330293
3142330303
4142330303
5142330313
6132230314
7132229324
8122129334
9122129335
10122129335
11112029346
12112029347
13101929348
14101829349
151018293410
16917293411
17917293312
18816293313
19816293315
20715293216
21715293217
22614293219
23614293220
24513283221
25513283123
26413283124
27412283124
28412283125
29312273126
30312273126
31311273227

Wind in December

Winds average 12 km/h in December.

Across December, daily wind ranges from about 12 km/h on the calmest days to 12 km/h at its breeziest. It stays fairly steady from day to day.

051015151015202531
Wind speed (km/h)Feels
112light breeze
212light breeze
312light breeze
412light breeze
512light breeze
612light breeze
712light breeze
812light breeze
912calm
1012calm
1112calm
1212calm
1312calm
1412calm
1512calm
1612calm
1712calm
1812calm
1912calm
2012calm
2112calm
2212calm
2312calm
2412calm
2512calm
2612calm
2712calm
2812calm
2912calm
3012calm
3112calm

Sunrise & sunset in December

DaylightNight

Daylight runs from about 13 h 42 min at the start of December to 13 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 6:35 AM to 6:45 AM, and sunset from 8:16 PM to 8:32 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
113.76:358:16
213.76:358:16
313.76:358:17
413.76:358:18
513.76:358:19
613.76:368:19
713.76:368:20
813.76:368:21
913.86:368:21
1013.86:368:22
1113.86:368:23
1213.86:378:23
1313.86:378:24
1413.86:378:25
1513.86:388:25
1613.86:388:26
1713.86:388:26
1813.86:398:27
1913.86:398:27
2013.86:408:28
2113.86:408:28
2213.86:408:29
2313.86:418:29
2413.86:418:30
2513.86:428:30
2613.86:428:31
2713.86:438:31
2813.86:448:31
2913.86:448:32
3013.86:458:32
3113.86:458:32

Solar energy in December

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in December, about 6.62 kWh/m² — the sunniest month for solar.

For context, solar energy here swings from a low near 2.57 kWh/m² to a high of 6.62 kWh/m² in December across the year — December's 6.62 kWh/m² sits near the top of that range.

0246151015202531
Solar energy (kWh/m²)Level
16.6Intense
26.6Intense
36.6Intense
46.6Intense
56.7Intense
66.7Intense
76.7Intense
86.7Intense
96.7Intense
106.7Intense
116.7Intense
126.7Intense
136.7Intense
146.6Intense
156.6Intense
166.6Intense
176.6Intense
186.6Intense
196.6Intense
206.6Intense
216.6Intense
226.6Intense
236.6Intense
246.6Intense
256.6Intense
266.6Intense
276.6Intense
286.6Intense
296.6Intense
306.6Intense
316.6Intense
Planning a trip in December

Is December a good time to visit Ijuí?

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

4.8
Sightseeing
10th-best month of the year
6.5
Beach & pool
3rd-best month of the year

December is a reasonable time to visit Ijuí for sightseeing. The water and warmth also suit a beach or pool day.

What to pack for Ijuí in December

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

In December, Ijuí sees daytime highs around 30°C and nights near 19°C. Pack light clothes and sun protection. Worth having: rain gear. About 13 days see rain.

light clothessun protectionrain gear

UV index in Ijuí 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 Ijuí peaks around January 20 at about 14 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near June 21 at about 4 (moderate).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeVery highModerateHighVery highExtremeJan 20UV 14Jun 21UV 4
UV index (midday)Level
Jan14Extreme
Feb13Extreme
Mar11Extreme
Apr8Very high
May5High
Jun4Moderate
Jul4Moderate
Aug5High
Sep8Very high
Oct7High
Nov11Extreme
Dec13Extreme

Air quality in Ijuí 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 Ijuí is worst in September — around 15 µg/m³ PM2.5 (moderate), about 2.8× the cleanest month (March, 6 µg/m³).

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

01020JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateGoodSep 1515 µg/m³Mar 166 µg/m³
PM2.5 (µg/m³)Level
Jan6Good
Feb6Good
Mar6Good
Apr6Good
May6Good
Jun7Good
Jul7Good
Aug10Good
Sep15Moderate
Oct9Good
Nov6Good
Dec6Good
Location & terrain

Where is Ijuí?

Ijuí sits at 28.4°S, 53.9°W, 329 m above sea level, in Brazil. The nearest listed city is Santo Ângelo, 35 km away.

Topography around Ijuí

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

Within 3 km, the terrain around Ijuí has only modest variations in elevation — a maximum elevation change of 154 m around an average of 323 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 236 m; within 80 km, significant variations in elevation — a maximum elevation change of 475 m.

The land around Ijuí is covered by artificial surfaces (47%) and trees (34%) within 3 km, cropland (66%) and trees (26%) within 16 km, and cropland (78%) within 80 km.

3 km
154 m
16 km
236 m
80 km
475 m
treesgrasslandcroplandartificial surfacesbare terrainwater
December weather nearby: Santo Ângelo 35 km · Cruz Alta 41 km · Panambi 42 km · Giruá 58 km · Três de Maio 75 km · Tupanciretã 77 km · Santa Rosa 80 km · Palmeira das Missões 80 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 Ijuí (-28.3878°, -53.9147°, elevation 329 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).