Dianópolis weather in December

In December, Dianópolis sees average daytime highs of 30°C and overnight lows near 21°C, with 244 mm of rain across 20.6 wet days and about 12.7 hours of daylight. It is the 9th-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 13% 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 42 min by month's end. Set against the rest of the year, December is Dianópolis's 10th-clearest and 9th-windiest month. For the whole year in context, see Dianópolis's year-round climate.

Daytime high
30°
9th warmest
Overnight low
21°
9th coldest
Rainfall
244 mm
20.6 wet days
Daylight
12 h 42 min
5:43 AM – 6:24 PM
Cloud cover
76%
10th clearest
Wind
6 km/h
9th windiest
Solar energy
5.52 kWh/m²
Travel score
3.7
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 Dianópolis 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 26°C and 33°C. Set against its neighbours, December runs about 1°C cooler than 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
263021
273021
283021
293021
303021
313021

How December really feels in Dianópolis

Once humidity and wind are folded in, December averages 30 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
30
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.

Dianópolis weather by month

How December compares with the rest of the year at a glance. December is the 9th-warmest and 3rd-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan29° / 21°26624.312.63.5
Feb29° / 21°23721.612.43.5
Mar30° / 21°24522.912.13.6
Apr30° / 21°11613.711.74.3
May31° / 20°294.311.55.1
Jun31° / 19°20.411.35.8
Jul31° / 19°0011.45.8
Aug33° / 20°10.211.64.7
Sep34° / 22°182.311.93.5
Oct33° / 22°9710.612.33.3
Nov31° / 22°22019.212.53.6
Dec30° / 21°24420.612.73.7

Cloud cover in December

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 13% of the time in December.

Beyond those clear spells, partly cloudy skies cover about 12% of December, with mostly cloudy or overcast conditions the remaining 75%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
12080
22080
32278
42278
52278
62377
72377
82377
92476
102476
112476
122476
132575
142575
152575
162674
172674
182773
192773
202773
212773
222773
232773
242773
252674
262674
272674
282575
292575
302575
312575

Chance of precipitation in December

Any precipitation

Dianópolis gets around 244 mm of rain over 20.6 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 68% and peaks near 73% on the wettest days.

0%20%40%60%80%151015202531
Rain chance (%)
166
266
366
466
567
667
767
868
968
1068
1168
1268
1368
1468
1568
1667
1767
1867
1966
2066
2166
2266
2367
2467
2568
2668
2769
2870
2971
3072
3173

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 50% of days. Sticky, muggy-or-worse air turns up on roughly 96% of them.

0%25%50%75%100%151015202531
Humid (%)Muggy (%)Oppressive (%)
174647
264548
364449
464450
554352
654253
754253
854154
944155
1044155
1144155
1244254
1334255
1434354
1534453
1634453
1734552
1844650
1944750
2044749
2144848
2244947
2344947
2444946
2544947
2644947
2744847
2844748
2944749
3044649
3144650

Wind in December

Winds average 6 km/h in December.

Across December, daily wind ranges from about 5 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
265calm
275calm
285calm
295calm
305calm
315calm

Sunrise & sunset in December

DaylightNight

Daylight runs from about 12 h 36 min at the start of December to 12 h 42 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 5:38 AM to 5:50 AM, and sunset from 6:16 PM to 6:31 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
112.65:386:16
212.65:386:17
312.65:396:17
412.65:396:18
512.75:396:18
612.75:396:19
712.75:406:19
812.75:406:20
912.75:406:20
1012.75:416:21
1112.75:416:21
1212.75:416:22
1312.75:426:22
1412.75:426:23
1512.75:436:23
1612.75:436:24
1712.75:446:24
1812.75:446:25
1912.75:446:25
2012.75:456:26
2112.75:456:26
2212.75:466:27
2312.75:466:27
2412.75:476:28
2512.75:476:28
2612.75:486:29
2712.75:486:29
2812.75:496:29
2912.75:496:30
3012.75:506:30
3112.75:506:31

Solar energy in December

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in December, about 5.52 kWh/m².

For context, solar energy here swings from a low near 5.07 kWh/m² to a high of 6.4 kWh/m² in September across the year — December's 5.52 kWh/m² falls in the middle.

0246151015202531
Solar energy (kWh/m²)Level
15.4Bright
25.4Bright
35.4Bright
45.4Bright
55.4Bright
65.4Bright
75.4Bright
85.4Bright
95.4Bright
105.4Bright
115.4Bright
125.5Bright
135.5Bright
145.5Bright
155.5Bright
165.5Bright
175.5Bright
185.5Bright
195.5Bright
205.5Bright
215.6Bright
225.6Bright
235.6Bright
245.6Bright
255.6Bright
265.6Bright
275.6Bright
285.6Bright
295.6Bright
305.5Bright
315.5Bright
Planning a trip in December

Hazard calendar for Dianópolis

In seasonPeak

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

Dianópolis'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 Dianópolis?

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

3.7
Sightseeing
6th-best month of the year
5.0
Beach & pool
9th-best month of the year

December is a weaker month for outdoor sightseeing in Dianópolis.

What to pack for Dianópolis in December

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

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

light clothesrain gearsun protection

UV index in Dianópolis in December

LowModerateHighVery highExtreme

Clear-sky midday UV in December peaks around 12 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Dianópolis peaks around February 15 at about 15 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near June 22 at about 9 (very high).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeVery highExtremeFeb 15UV 15Jun 22UV 9
UV index (midday)Level
Jan14Extreme
Feb15Extreme
Mar14Extreme
Apr13Extreme
May10Extreme
Jun9Very high
Jul9Very high
Aug10Extreme
Sep13Extreme
Oct12Extreme
Nov13Extreme
Dec12Extreme

Air quality in Dianópolis 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 Dianópolis is worst in September — around 24 µg/m³ PM2.5 (moderate), about 5.1× the cleanest month (June, 5 µg/m³).

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

0102030JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateGoodSep 2023 µg/m³Jun 185 µg/m³
PM2.5 (µg/m³)Level
Jan7Good
Feb7Good
Mar7Good
Apr6Good
May6Good
Jun5Good
Jul5Good
Aug13Moderate
Sep24Moderate
Oct21Moderate
Nov9Good
Dec8Good
Location & terrain

Where is Dianópolis?

Dianópolis sits at 11.6°S, 46.8°W, 699 m above sea level, in Brazil. The nearest listed city is Luis Eduardo Magalhães, 124 km away.

Topography around Dianópolis

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

Within 3 km, the terrain around Dianópolis has only modest variations in elevation — a maximum elevation change of 170 m around an average of 684 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 430 m; within 80 km, large variations in elevation — a maximum elevation change of 655 m.

The land around Dianópolis is covered by trees (50%) and grassland (20%) within 3 km, trees (41%), grassland (29%) and shrubs (28%) within 16 km, and grassland (35%), shrubs (31%) and trees (20%) within 80 km.

3 km
170 m
16 km
430 m
80 km
655 m
treesshrubsgrasslandcroplandartificial surfaces
December weather nearby: Luis Eduardo Magalhães 124 km · Campos Belos 157 km · Formosa do Rio Preto 189 km · Porto Nacional 202 km · Barreiras 208 km · Riachão das Neves 208 km · São Desidério 217 km · Corrente 224 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 Dianópolis (-11.6278°, -46.8206°, elevation 699 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).