Umirim weather in December

In December, Umirim sees average daytime highs of 33°C and overnight lows near 25°C, with 19 mm of rain across 4.4 wet days and about 12.2 hours of daylight. It is the 4th-warmest and 7th-wettest month of the year here.

Day-to-day highs hold fairly steady near 33°C through the month. The sky is clear or mostly clear about 45% of the time in December, and the air most often feels oppressive.

Daylight stretches from about 12 h 12 min at the start of December to 12 h 12 min by month's end. Set against the rest of the year, December is Umirim's 7th-clearest and 5th-windiest month. For the whole year in context, see Umirim's year-round climate.

Daytime high
33°
4th warmest
Overnight low
25°
12th coldest
Rainfall
19 mm
4.4 wet days
Daylight
12 h 12 min
5:27 AM – 5:40 PM
Cloud cover
49%
7th clearest
Wind
15 km/h
5th windiest
Solar energy
6.01 kWh/m²
Travel score
3.9
out of 10

Umirim 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 33°C through the month.

A typical December day in Umirim reaches about 33°C in the afternoon and slips back to 25°C overnight — a 8°C spread between the day's warmth and the night's chill. On most days the high lands between 32°C and 34°C. Set against its neighbours, December runs on par with November and about 1°C warmer than January.

20°25°30°35°151015202531
Avg high (°C)Avg low (°C)
13325
23325
33325
43325
53325
63325
73325
83325
93325
103325
113325
123325
133325
143325
153325
163325
173325
183325
193325
203325
213325
223325
233325
243325
253325
263325
273325
283325
293325
303325
313325

How December really feels in Umirim

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.

Umirim weather by month

How December compares with the rest of the year at a glance. December is the 4th-warmest and 7th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan32° / 25°8014.312.23.5
Feb31° / 24°11417.912.13.3
Mar31° / 24°16523.4123.1
Apr30° / 24°18923.411.93.2
May31° / 24°8314.611.84.1
Jun31° / 23°31711.84.8
Jul32° / 23°163.111.84.8
Aug33° / 24°40.611.94.5
Sep34° / 24°10.1124.2
Oct34° / 25°20.512.14.0
Nov34° / 25°40.712.24.0
Dec33° / 25°194.412.23.9

Cloud cover in December

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 45% of the time in December.

Beyond those clear spells, partly cloudy skies cover about 19% of December, with mostly cloudy or overcast conditions the remaining 36%. Skies tend to cloud over as the month goes on.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
16832
26931
36832
46832
56832
66733
76733
86733
96634
106634
116634
126634
136634
146535
156535
166535
176436
186436
196436
206337
216337
226337
236238
246238
256139
266139
276040
285941
295842
305743
315644

Chance of precipitation in December

Any precipitation

Umirim gets around 19 mm of rain over 4.4 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 15% and peaks near 29% on the wettest days. The odds climb toward the end of the month.

0%10%20%30%40%151015202531
Rain chance (%)
15
25
36
46
57
67
78
88
99
109
1110
1211
1311
1412
1513
1614
1715
1816
1917
2017
2118
2219
2320
2421
2522
2623
2724
2825
2927
3028
3129

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 77% of days. Sticky, muggy-or-worse air turns up on roughly 100% of them.

0%25%50%75%100%151015202531
Muggy (%)Oppressive (%)Miserable (%)
135641
234651
333661
432671
531681
630691
729701
828711
926731
1025741
1124751
1223761
1322780
1422780
1521790
1621790
1720800
1820800
1919810
2019810
2118820
2218820
2318820
2417830
2517830
2617830
2716840
2816840
2915850
3015850
3114860

Wind in December

Winds average 15 km/h in December.

Across December, daily wind ranges from about 14 km/h on the calmest days to 16 km/h at its breeziest. It stays fairly steady from day to day.

05101520151015202531
Wind speed (km/h)Feels
116light breeze
216light breeze
316light breeze
416light breeze
516light breeze
616light breeze
716light breeze
816light breeze
916light breeze
1016light breeze
1116light breeze
1216light breeze
1316light breeze
1415light breeze
1515light breeze
1615light breeze
1715light breeze
1815light breeze
1915light breeze
2015light breeze
2115light breeze
2215light breeze
2315light breeze
2415light breeze
2515light breeze
2615light breeze
2715light breeze
2814light breeze
2914light breeze
3014light breeze
3114light breeze

Sunrise & sunset in December

DaylightNight

Daylight runs from about 12 h 12 min at the start of December to 12 h 12 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 5:21 AM to 5:34 AM, and sunset from 5:33 PM to 5:47 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
112.25:215:33
212.25:225:34
312.25:225:34
412.25:225:34
512.25:235:35
612.25:235:35
712.25:235:36
812.25:245:36
912.25:245:37
1012.25:255:37
1112.25:255:38
1212.25:255:38
1312.25:265:38
1412.25:265:39
1512.25:275:39
1612.25:275:40
1712.25:285:40
1812.25:285:41
1912.25:295:41
2012.25:295:42
2112.25:305:42
2212.25:305:43
2312.25:305:43
2412.25:315:44
2512.25:315:44
2612.25:325:45
2712.25:325:45
2812.25:335:46
2912.25:335:46
3012.25:345:46
3112.25:345:47

Solar energy in December

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in December, about 6.01 kWh/m².

For context, solar energy here swings from a low near 4.75 kWh/m² to a high of 6.73 kWh/m² in September across the year — December's 6.01 kWh/m² falls in the middle.

0246151015202531
Solar energy (kWh/m²)Level
16.2Intense
26.2Intense
36.2Intense
46.2Intense
56.2Intense
66.2Intense
76.2Intense
86.1Intense
96.1Intense
106.1Intense
116.1Intense
126.1Intense
136.0Intense
146.0Intense
156.0Intense
166.0Bright
176.0Bright
186.0Bright
195.9Bright
205.9Bright
215.9Bright
225.9Bright
235.9Bright
245.9Bright
255.8Bright
265.8Bright
275.8Bright
285.8Bright
295.8Bright
305.8Bright
315.7Bright
Planning a trip in December

Hazard calendar for Umirim

In seasonPeak

None of Umirim's seasonal hazards are active in December. The full-year calendar below shows when the rainy season, cyclone risk and dust haze do peak.

Umirim's monsoon runs February–April, 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 Umirim?

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

3.9
Sightseeing
8th-best month of the year
7.0
Beach & pool
7th-best month of the year

December is a weaker month for outdoor sightseeing in Umirim. The water and warmth also suit a beach or pool day.

What to pack for Umirim in December

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

In December, Umirim sees daytime highs around 33°C and nights near 25°C. Pack light clothes and sun protection. About 4 days see rain.

light clothessun protection

Sea temperature near Umirim in December

The nearest coast averages about 28°C in December — the other half of the beach question. The full-year curve and swim-comfort zones are below.

The sea at the nearest coast (about 42 km away) is warmest in March at about 29°C and coldest in August near 27°C.

The water stays above 20°C all year — warm enough for a swim any month.

26°28°30°JanFebMarAprMayJunJulAugSepOctNovDecwarmtropicalcomfortable to swim
Sea temperature (°C)Comfort
Jan28Tropical
Feb28Tropical
Mar29Tropical
Apr29Tropical
May29Tropical
Jun28Tropical
Jul27Warm
Aug27Warm
Sep27Warm
Oct27Warm
Nov28Warm
Dec28Tropical

UV index in Umirim in December

LowModerateHighVery highExtreme

Clear-sky midday UV in December peaks around 11 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Umirim peaks around March 16 at about 15 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near June 22 at about 10 (very high).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeVery highExtremeMar 16UV 15Jun 22UV 10
UV index (midday)Level
Jan13Extreme
Feb14Extreme
Mar16Extreme
Apr14Extreme
May11Extreme
Jun10Very high
Jul10Very high
Aug10Extreme
Sep12Extreme
Oct12Extreme
Nov12Extreme
Dec11Extreme
Location & terrain

Where is Umirim?

Umirim sits at 3.7°S, 39.4°W, 63 m above sea level, in Brazil. The nearest listed city is Turaru, 13 km away.

Topography around Umirim

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

Within 3 km, the terrain around Umirim has only modest variations in elevation — a maximum elevation change of 68 m around an average of 69 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 561 m; within 80 km, large variations in elevation — a maximum elevation change of 1,079 m.

The land around Umirim is covered by shrubs (45%) and grassland (38%) within 3 km, shrubs (52%) and grassland (28%) within 16 km, and shrubs (44%) and grassland (20%) within 80 km.

3 km
68 m
16 km
561 m
80 km
1,079 m
treesshrubsgrasslandcroplandartificial surfacesbare terrainwaterwetland
December weather nearby: Turaru 13 km · Pentecoste 16 km · Uruburetama 18 km · Itapagé 26 km · Itapipoca 32 km · Paraipaba 35 km · Tejuçuoca 43 km · São Gonçalo do Amarante 43 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 Umirim (-3.6772°, -39.3503°, elevation 63 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. Sea temperatures are the NOAA OISST v2.1 1991–2020 monthly climatology (public domain), sampled at the nearest ocean point. UV index is derived from CAMS (Copernicus Atmosphere Monitoring Service) clear-sky UV data — contains modified Copernicus Atmosphere Monitoring Service information. Topography is sampled from the Copernicus DEM GLO-90 elevation model (© ESA/Airbus) and ESA WorldCover 2021 land cover (CC BY 4.0).