Guaíra weather in December

In December, Guaíra sees average daytime highs of 30°C and overnight lows near 22°C, with 218 mm of rain across 22.5 wet days and about 13.2 hours of daylight. It is the 7th-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 15% of the time in December, and the air most often feels muggy.

Daylight stretches from about 13 h 06 min at the start of December to 13 h 12 min by month's end. Set against the rest of the year, December is Guaíra's 11th-clearest and 8th-windiest month. For the whole year in context, see Guaíra's year-round climate.

Daytime high
30°
7th warmest
Overnight low
22°
10th coldest
Rainfall
218 mm
22.5 wet days
Daylight
13 h 12 min
6:33 AM – 7:46 PM
Cloud cover
73%
11th clearest
Wind
7 km/h
8th windiest
Solar energy
5.84 kWh/m²
Travel score
3.4
out of 10

Guaíra 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 Guaíra 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 Guaíra

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.

Guaíra weather by month

How December compares with the rest of the year at a glance. December is the 7th-warmest and 2nd-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan30° / 22°25122.113.13.5
Feb30° / 22°17718.212.73.6
Mar30° / 22°16018.912.13.9
Apr30° / 20°618.511.55.3
May28° / 18°334.7117.1
Jun28° / 17°172.210.87.9
Jul28° / 17°111.610.97.7
Aug30° / 18°121.711.36.2
Sep32° / 20°496.111.94.6
Oct32° / 22°9911.912.53.8
Nov31° / 22°16417.9133.7
Dec30° / 22°21822.513.23.4

Cloud cover in December

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 15% of the time in December.

Beyond those clear spells, partly cloudy skies cover about 14% of December, with mostly cloudy or overcast conditions the remaining 71%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
13169
23070
32971
42773
52773
62674
72674
82674
92575
102674
112674
122773
132773
142773
152872
162872
172971
182971
193169
203169
213268
223268
233268
243169
253169
263070
272872
282872
292773
302773
312773

Chance of precipitation in December

Any precipitation

Guaíra gets around 218 mm of rain over 22.5 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 72% and peaks near 74% on the wettest days.

0%20%40%60%80%151015202531
Rain chance (%)
167
268
369
470
571
672
773
873
973
1074
1174
1274
1373
1473
1573
1673
1772
1872
1972
2071
2171
2271
2371
2472
2572
2672
2773
2873
2973
3073
3173

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 55% of days. Sticky, muggy-or-worse air turns up on roughly 96% of them.

0%25%50%75%100%151015202531
Comfortable (%)Humid (%)Muggy (%)Oppressive (%)
12125333
22115334
32105236
4285238
5275239
6265240
7155341
8155341
9145342
10135442
11135442
12135442
13035641
14025741
15025840
16025840
17025939
18025939
19025939
20025939
21025939
22025939
23025840
24025741
25025642
26025444
27025345
28025246
29025147
30025048
31024949

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 h 06 min at the start of December to 13 h 12 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 6:29 AM to 6:40 AM, and sunset from 7:37 PM to 7:53 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
113.16:297:37
213.26:297:38
313.26:297:39
413.26:297:39
513.26:297:40
613.26:307:40
713.26:307:41
813.26:307:42
913.26:307:42
1013.26:317:43
1113.26:317:43
1213.26:317:44
1313.26:327:44
1413.26:327:45
1513.26:327:46
1613.26:337:46
1713.26:337:47
1813.26:337:47
1913.26:347:48
2013.26:347:48
2113.26:357:49
2213.26:357:49
2313.26:367:50
2413.26:367:50
2513.26:377:51
2613.26:377:51
2713.26:387:51
2813.26:387:52
2913.26:397:52
3013.26:397:53
3113.26:407:53

Solar energy in December

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in December, about 5.84 kWh/m².

For context, solar energy here swings from a low near 4.05 kWh/m² to a high of 6.16 kWh/m² in October across the year — December's 5.84 kWh/m² falls in the middle.

0246151015202531
Solar energy (kWh/m²)Level
15.8Bright
25.8Bright
35.8Bright
45.7Bright
55.7Bright
65.7Bright
75.7Bright
85.7Bright
95.7Bright
105.7Bright
115.7Bright
125.7Bright
135.8Bright
145.8Bright
155.8Bright
165.8Bright
175.8Bright
185.9Bright
195.9Bright
205.9Bright
215.9Bright
225.9Bright
235.9Bright
245.9Bright
255.9Bright
265.9Bright
275.9Bright
285.9Bright
295.8Bright
305.8Bright
315.8Bright
Planning a trip in December

Hazard calendar for Guaíra

In seasonPeak

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

Guaíra'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 Guaíra?

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

3.4
Sightseeing
12th-best month of the year
4.8
Beach & pool
12th-best month of the year

December is a weaker month for outdoor sightseeing in Guaíra.

What to pack for Guaíra in December

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

In December, Guaíra sees daytime highs around 30°C and nights near 22°C. Pack light clothes and rain gear. Worth having: sun protection. About 23 days see rain.

light clothesrain gearsun protection

UV index in Guaíra 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 Guaíra peaks around January 23 at about 15 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near June 21 at about 7 (high).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeVery highHighVery highExtremeJan 23UV 15Jun 21UV 7
UV index (midday)Level
Jan15Extreme
Feb15Extreme
Mar13Extreme
Apr10Extreme
May8Very high
Jun7High
Jul7High
Aug9Very high
Sep10Very high
Oct11Extreme
Nov14Extreme
Dec14Extreme

Air quality in Guaíra 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 Guaíra is worst in September — around 42 µg/m³ PM2.5 (poor), about 6.0× the cleanest month (November, 7 µg/m³).

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

0204060JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateModerateGoodSep 1539 µg/m³Nov 227 µg/m³
PM2.5 (µg/m³)Level
Jan9Good
Feb9Good
Mar9Good
Apr9Good
May10Good
Jun10Good
Jul10Good
Aug20Moderate
Sep42Poor
Oct15Moderate
Nov7Good
Dec8Good
Location & terrain

Where is Guaíra?

Guaíra sits at 20.3°S, 48.3°W, 516 m above sea level, in Brazil. The nearest listed city is Miguelópolis, 33 km away.

Topography around Guaíra

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

Within 3 km, the terrain around Guaíra has only modest variations in elevation — a maximum elevation change of 51 m around an average of 510 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 151 m; within 80 km, significant variations in elevation — a maximum elevation change of 537 m.

The land around Guaíra is covered by cropland (47%) and artificial surfaces (26%) within 3 km, cropland (81%) within 16 km, and cropland (71%) within 80 km.

3 km
51 m
16 km
151 m
80 km
537 m
treesshrubsgrasslandcroplandartificial surfacesbare terrainwater
December weather nearby: Miguelópolis 33 km · Barretos 38 km · Conceição das Alagoas 46 km · Colina 50 km · Guará 52 km · Morro Agudo 53 km · Ituverava 55 km · São Joaquim da Barra 56 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 Guaíra (-20.3183°, -48.3106°, elevation 516 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).