Bariri weather in December

In December, Bariri sees average daytime highs of 30°C and overnight lows near 21°C, with 187 mm of rain across 19.6 wet days and about 13.3 hours of daylight. It is the 4th-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 17% of the time in December, and the air most often feels muggy.

Daylight stretches from about 13 h 18 min at the start of December to 13 h 18 min by month's end. Set against the rest of the year, December is Bariri's 11th-clearest and 6th-windiest month. For the whole year in context, see Bariri's year-round climate.

Daytime high
30°
4th warmest
Overnight low
21°
10th coldest
Rainfall
187 mm
19.6 wet days
Daylight
13 h 18 min
6:31 AM – 7:51 PM
Cloud cover
69%
11th clearest
Wind
9 km/h
6th windiest
Solar energy
5.89 kWh/m²
Travel score
3.7
out of 10

Bariri 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 Bariri reaches about 30°C in the afternoon and slips back to 21°C overnight — a 9°C spread between the day's warmth and the night's chill. On most days the high lands between 27°C and 34°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)
13021
23021
33021
43021
53021
63021
73021
83021
93021
103021
113021
123021
133021
143021
153021
163021
173021
183021
193021
203021
213021
223021
233021
243021
253021
263022
273022
283022
293022
303022
313022

How December really feels in Bariri

Once humidity and wind are folded in, December averages 26 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
26
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.

Bariri weather by month

How December compares with the rest of the year at a glance. December is the 4th-warmest and 2nd-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan30° / 22°23821.713.23.5
Feb30° / 22°16718.212.83.7
Mar30° / 21°13116.412.24.3
Apr29° / 19°567.811.55.8
May27° / 16°555.8117.4
Jun26° / 15°333.710.78.0
Jul26° / 15°233.110.88.1
Aug29° / 16°273.511.27.1
Sep30° / 18°58711.95.5
Oct31° / 20°9912.112.54.4
Nov30° / 20°14514.913.14.2
Dec30° / 21°18719.613.33.7

Cloud cover in December

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 17% 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 66%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
13763
23664
33565
43466
53367
63268
73268
83268
93367
103367
113268
123466
133466
143565
153565
163763
173763
183763
193763
203763
213862
223862
233763
243565
253565
263466
273367
283367
293169
303169
313169

Chance of precipitation in December

Any precipitation

Bariri gets around 187 mm of rain over 19.6 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 63% and peaks near 66% on the wettest days. The odds climb toward the end of the month.

0%20%40%60%80%151015202531
Rain chance (%)
156
257
358
459
560
661
762
862
963
1063
1163
1264
1364
1465
1565
1665
1765
1865
1965
2065
2165
2265
2365
2465
2565
2666
2766
2866
2966
3066
3166

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 49% of days. Sticky, muggy-or-worse air turns up on roughly 82% of them.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)
117234821
216224823
315224825
415214726
514204628
614204630
703204531
803194532
903194533
1003184534
1102184634
1202184634
1302174734
1402174734
1502164834
1602164933
1702165033
1801155232
1901155232
2001155232
2101145332
2201135333
2301135333
2401125334
2501115335
2601105336
2701105237
2801105138
290195139
300195040
310194941

Wind in December

Winds average 9 km/h in December.

Across December, daily wind ranges from about 8 km/h on the calmest days to 9 km/h at its breeziest. It stays fairly steady from day to day.

051015151015202531
Wind speed (km/h)Feels
19calm
29calm
39calm
49calm
59calm
69calm
79calm
89calm
99calm
109calm
119calm
129calm
139calm
149calm
159calm
169calm
179calm
189calm
199calm
209calm
219calm
229calm
239calm
249calm
259calm
268calm
278calm
288calm
298calm
308calm
318calm

Sunrise & sunset in December

DaylightNight

Daylight runs from about 13 h 18 min at the start of December to 13 h 18 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 6:27 AM to 6:38 AM, and sunset from 7:42 PM to 7:58 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
113.36:277:42
213.36:277:43
313.36:277:44
413.36:287:44
513.36:287:45
613.36:287:45
713.36:287:46
813.36:287:47
913.36:297:47
1013.36:297:48
1113.36:297:49
1213.36:297:49
1313.36:307:50
1413.36:307:50
1513.36:307:51
1613.36:317:51
1713.36:317:52
1813.36:327:52
1913.36:327:53
2013.36:337:53
2113.46:337:54
2213.46:337:54
2313.46:347:55
2413.36:347:55
2513.36:357:56
2613.36:357:56
2713.36:367:57
2813.36:367:57
2913.36:377:57
3013.36:387:58
3113.36:387:58

Solar energy in December

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in December, about 5.89 kWh/m².

For context, solar energy here swings from a low near 3.74 kWh/m² to a high of 6.04 kWh/m² in November across the year — December's 5.89 kWh/m² sits near the top of that range.

0246151015202531
Solar energy (kWh/m²)Level
15.9Bright
25.9Bright
35.9Bright
45.9Bright
55.9Bright
65.8Bright
75.8Bright
85.8Bright
95.8Bright
105.8Bright
115.8Bright
125.8Bright
135.8Bright
145.8Bright
155.9Bright
165.9Bright
175.9Bright
185.9Bright
195.9Bright
205.9Bright
215.9Bright
225.9Bright
235.9Bright
245.9Bright
255.9Bright
265.9Bright
275.8Bright
285.8Bright
295.8Bright
305.8Bright
315.7Bright
Planning a trip in December

Hazard calendar for Bariri

In seasonPeak

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

Bariri'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 Bariri?

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

3.7
Sightseeing
10th-best month of the year
5.2
Beach & pool
10th-best month of the year

December is a weaker month for outdoor sightseeing in Bariri.

What to pack for Bariri in December

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

In December, Bariri sees daytime highs around 30°C and nights near 21°C. Pack light clothes and rain gear. Worth having: sun protection. About 20 days see rain.

light clothesrain gearsun protection

UV index in Bariri 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 Bariri peaks around January 22 at about 15 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near July 10 at about 6 (high).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeVery highHighVery highExtremeJan 22UV 15Jul 10UV 6
UV index (midday)Level
Jan15Extreme
Feb15Extreme
Mar13Extreme
Apr10Very high
May7High
Jun6High
Jul6High
Aug8Very high
Sep9Very high
Oct11Extreme
Nov13Extreme
Dec13Extreme

Air quality in Bariri 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 Bariri is worst in September — around 31 µg/m³ PM2.5 (moderate), about 3.5× the cleanest month (November, 9 µg/m³).

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

010203040JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateGoodSep 1031 µg/m³Nov 239 µg/m³
PM2.5 (µg/m³)Level
Jan10Good
Feb11Good
Mar11Good
Apr11Good
May13Moderate
Jun14Moderate
Jul14Moderate
Aug29Moderate
Sep31Moderate
Oct17Moderate
Nov9Good
Dec9Good
Location & terrain

Where is Bariri?

Bariri sits at 22.1°S, 48.7°W, 449 m above sea level, in Brazil. The nearest listed city is Jaú, 31 km away.

Topography around Bariri

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

Within 3 km, the terrain around Bariri has only modest variations in elevation — a maximum elevation change of 77 m around an average of 452 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 184 m; within 80 km, significant variations in elevation — a maximum elevation change of 512 m.

The land around Bariri is covered by cropland (42%) and artificial surfaces (23%) within 3 km, cropland (66%) within 16 km, and cropland (58%) and trees (28%) within 80 km.

3 km
77 m
16 km
184 m
80 km
512 m
treesgrasslandcroplandartificial surfacesbare terrainwater
December weather nearby: Jaú 31 km · Pederneiras 31 km · Ibitinga 36 km · Bauru 42 km · Macatuba 48 km · Dois Córregos 49 km · Barra Bonita 50 km · Agudos 51 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 Bariri (-22.0744°, -48.7403°, elevation 449 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).