Assis weather in December

In December, Assis sees average daytime highs of 30°C and overnight lows near 21°C, with 190 mm of rain across 18.8 wet days and about 13.4 hours of daylight. It is the 1st-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 20% 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 24 min by month's end. Set against the rest of the year, December is Assis's 11th-clearest and 6th-windiest month. For the whole year in context, see Assis's year-round climate.

Daytime high
30°
1st warmest
Overnight low
21°
10th coldest
Rainfall
190 mm
18.8 wet days
Daylight
13 h 24 min
6:36 AM – 7:59 PM
Cloud cover
67%
11th clearest
Wind
9 km/h
6th windiest
Solar energy
6.04 kWh/m²
Travel score
3.8
out of 10

Assis 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 Assis 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
263021
273021
283021
293021
303021
313021

How December really feels in Assis

Once humidity and wind are folded in, December averages 20 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
20
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.

Assis weather by month

How December compares with the rest of the year at a glance. December is the 1st-warmest and 3rd-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan30° / 21°24821.413.23.6
Feb30° / 21°19718.912.83.7
Mar30° / 21°14116.612.24.3
Apr29° / 19°697.611.56.0
May26° / 16°747.210.97.3
Jun25° / 15°615.810.67.8
Jul25° / 14°424.510.88.0
Aug28° / 15°454.211.27.5
Sep29° / 17°928.211.96.0
Oct30° / 19°13212.912.54.8
Nov30° / 20°14913.913.14.4
Dec30° / 21°19018.813.43.8

Cloud cover in December

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 20% 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 63%. Skies tend to cloud over as the month goes on.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
13664
23565
33466
43466
53466
63367
73466
83565
93565
103664
113664
123664
133763
143862
153961
163961
174060
184060
194159
204159
214159
224159
234159
243961
253862
263862
273664
283664
293565
303565
313367

Chance of precipitation in December

Any precipitation

Assis gets around 190 mm of rain over 18.8 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 60% 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 (%)
152
253
354
455
556
656
757
858
958
1059
1159
1260
1360
1460
1561
1661
1761
1861
1962
2062
2162
2263
2363
2464
2564
2665
2765
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 41% of days. Sticky, muggy-or-worse air turns up on roughly 79% of them.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)
1210214325
219204326
318204328
418194329
517194330
616194331
716194332
815194233
915184234
1015184234
1115184235
1205184136
1304184136
1404184136
1504174137
1604174137
1704174138
1804174138
1904174139
2004164140
2103164040
2203154041
2303144043
2403144044
2502133945
2602133947
2702133848
2801123749
2901123651
3001123651
3101113553

Wind in December

Winds average 9 km/h in December.

Across December, daily wind ranges from about 9 km/h on the calmest days to 10 km/h at its breeziest. It stays fairly steady from day to day.

051015151015202531
Wind speed (km/h)Feels
110calm
210calm
310calm
410calm
510calm
610calm
710calm
89calm
99calm
109calm
119calm
129calm
139calm
149calm
159calm
169calm
179calm
189calm
199calm
209calm
219calm
229calm
239calm
249calm
259calm
269calm
279calm
289calm
299calm
309calm
319calm

Sunrise & sunset in December

DaylightNight

Daylight runs from about 13 h 18 min at the start of December to 13 h 24 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 6:33 AM to 6:44 AM, and sunset from 7:50 PM to 8:06 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
113.36:337:50
213.36:337:51
313.36:337:51
413.36:337:52
513.36:337:53
613.36:337:53
713.36:347:54
813.36:347:55
913.46:347:55
1013.46:347:56
1113.46:357:56
1213.46:357:57
1313.46:357:58
1413.46:367:58
1513.46:367:59
1613.46:367:59
1713.46:378:00
1813.46:378:00
1913.46:388:01
2013.46:388:01
2113.46:388:02
2213.46:398:02
2313.46:398:03
2413.46:408:03
2513.46:408:04
2613.46:418:04
2713.46:418:05
2813.46:428:05
2913.46:438:05
3013.46:438:06
3113.46:448:06

Solar energy in December

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in December, about 6.04 kWh/m².

For context, solar energy here swings from a low near 3.48 kWh/m² to a high of 6.06 kWh/m² in November across the year — December's 6.04 kWh/m² sits near the top of that range.

0246151015202531
Solar energy (kWh/m²)Level
16.1Intense
26.1Intense
36.1Intense
46.0Intense
56.0Intense
66.0Intense
76.0Intense
86.0Intense
96.0Intense
106.0Intense
116.0Intense
126.0Intense
136.0Intense
146.0Intense
156.0Intense
166.1Intense
176.1Intense
186.1Intense
196.1Intense
206.1Intense
216.1Intense
226.1Intense
236.1Intense
246.1Intense
256.1Intense
266.0Intense
276.0Intense
286.0Intense
296.0Bright
306.0Bright
315.9Bright
Planning a trip in December

Hazard calendar for Assis

In seasonPeak

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

Assis's rainy season runs October–March, 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 Assis?

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

3.8
Sightseeing
10th-best month of the year
5.4
Beach & pool
10th-best month of the year

December is a weaker month for outdoor sightseeing in Assis.

What to pack for Assis in December

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

In December, Assis sees daytime highs around 30°C and nights near 21°C. Pack light clothes, rain gear and sun protection. About 19 days see rain.

light clothesrain gearsun protection

UV index in Assis 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 Assis peaks around January 22 at about 15 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near July 13 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 13UV 6
UV index (midday)Level
Jan15Extreme
Feb15Extreme
Mar12Extreme
Apr9Very high
May7High
Jun6High
Jul5High
Aug7Very high
Sep8Very high
Oct11Extreme
Nov13Extreme
Dec13Extreme

Air quality in Assis 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 Assis is worst in September — around 19 µg/m³ PM2.5 (moderate), about 2.8× the cleanest month (November, 7 µg/m³).

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

0102030JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateGoodSep 1619 µg/m³Nov 237 µg/m³
PM2.5 (µg/m³)Level
Jan8Good
Feb8Good
Mar7Good
Apr8Good
May10Good
Jun9Good
Jul9Good
Aug13Moderate
Sep19Moderate
Oct13Moderate
Nov7Good
Dec7Good
Location & terrain

Where is Assis?

Assis sits at 22.7°S, 50.4°W, 546 m above sea level, in Brazil. The nearest listed city is Cândido Mota, 10 km away.

Topography around Assis

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

Within 3 km, the terrain around Assis has only modest variations in elevation — a maximum elevation change of 109 m around an average of 559 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 219 m; within 80 km, significant variations in elevation — a maximum elevation change of 471 m.

The land around Assis is covered by artificial surfaces (54%) within 3 km, cropland (69%) within 16 km, and cropland (62%) within 80 km.

3 km
109 m
16 km
219 m
80 km
471 m
treesgrasslandcroplandartificial surfaceswater
December weather nearby: Cândido Mota 10 km · Palmital 24 km · Paraguaçu Paulista 32 km · Andirá 47 km · Bandeirantes 50 km · Cambará 55 km · Cornélio Procópio 63 km · Ourinhos 66 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 Assis (-22.6617°, -50.4122°, elevation 546 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).