Una weather in December

In December, Una sees average daytime highs of 28°C and overnight lows near 23°C, with 123 mm of rain across 17.7 wet days and about 12.9 hours of daylight. It is the 4th-warmest and 4th-wettest month of the year here.

Day-to-day highs hold fairly steady near 28°C through the month. The sky is clear or mostly clear about 28% of the time in December, and the air most often feels oppressive.

Daylight stretches from about 12 h 48 min at the start of December to 12 h 54 min by month's end. Set against the rest of the year, December is Una's 11th-clearest and 4th-windiest month. For the whole year in context, see Una's year-round climate.

Daytime high
28°
4th warmest
Overnight low
23°
9th coldest
Rainfall
123 mm
17.7 wet days
Daylight
12 h 54 min
5:05 AM – 6:00 PM
Cloud cover
63%
11th clearest
Wind
12 km/h
4th windiest
Solar energy
6.13 kWh/m²
Travel score
5.0
out of 10

Una 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 28°C through the month.

A typical December day in Una reaches about 28°C in the afternoon and slips back to 23°C overnight — a 5°C spread between the day's warmth and the night's chill. On most days the high lands between 27°C and 29°C. Set against its neighbours, December runs about 1°C warmer than November and on par with January.

20°23°25°28°30°151015202531
Avg high (°C)Avg low (°C)
12823
22823
32823
42823
52823
62823
72823
82823
92823
102823
112824
122824
132824
142824
152824
162824
172824
182823
192823
202823
212823
222823
232823
242824
252824
262824
272824
282824
292824
302824
312824

How December really feels in Una

Once humidity and wind are folded in, December averages 0 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
0
heat index over the day's high
Days feeling ≤ C
0
wind chill below the day's low

December sits comfortably in between — no days that feel dangerously hot or drop to a hard freeze once humidity and wind are folded in.

Una weather by month

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

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan29° / 24°10219.312.84.6
Feb29° / 24°8818.712.54.4
Mar29° / 24°12622.212.14.2
Apr28° / 23°13421.711.74.5
May27° / 22°11619.211.35.3
Jun26° / 21°9918.611.15.5
Jul25° / 20°972011.25.5
Aug25° / 20°7217.911.55.8
Sep26° / 21°6715.411.96.0
Oct27° / 22°10416.812.35.6
Nov27° / 23°16118.812.75.0
Dec28° / 23°12317.712.95.0

Cloud cover in December

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 28% of the time in December.

Beyond those clear spells, partly cloudy skies cover about 18% of December, with mostly cloudy or overcast conditions the remaining 54%. Skies tend to open up as the month goes on.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
13763
23862
33862
43961
54060
64060
74159
84060
94159
104258
114357
124357
134456
144555
154555
164654
174753
184852
194951
205050
215050
225050
235149
245149
255248
265248
275248
285248
295248
305248
315248

Chance of precipitation in December

Any precipitation

Una gets around 123 mm of rain over 17.7 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 57% and peaks near 63% on the wettest days.

0%20%40%60%151015202531
Rain chance (%)
163
262
362
461
561
660
760
859
959
1058
1157
1257
1356
1456
1556
1656
1756
1855
1955
2055
2155
2255
2355
2455
2555
2656
2756
2856
2957
3057
3158

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 93% of days. Sticky, muggy-or-worse air turns up on roughly 100% of them.

0%25%50%75%100%151015202531
Muggy (%)Oppressive (%)Miserable (%)
16904
26904
35914
45914
55905
65905
74915
84915
94915
104924
114924
124924
134924
144933
154933
164933
174942
183952
193952
203952
213952
223952
233952
243952
253952
263952
273952
283952
292962
302962
312953

Wind in December

Winds average 12 km/h in December.

Across December, daily wind ranges from about 12 km/h on the calmest days to 13 km/h at its breeziest. It stays fairly steady from day to day.

051015151015202531
Wind speed (km/h)Feels
113light breeze
213light breeze
313light breeze
413light breeze
513light breeze
613light breeze
713light breeze
813light breeze
913light breeze
1013light breeze
1113light breeze
1213light breeze
1313light breeze
1413light breeze
1513light breeze
1613light breeze
1712light breeze
1812light breeze
1912light breeze
2012light breeze
2112light breeze
2212light breeze
2312light breeze
2412light breeze
2512light breeze
2612light breeze
2712light breeze
2812light breeze
2912light breeze
3012calm
3112calm

Sunrise & sunset in December

DaylightNight

Daylight runs from about 12 h 48 min at the start of December to 12 h 54 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 5:01 AM to 5:13 AM, and sunset from 5:51 PM to 6:06 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
112.85:015:51
212.85:015:52
312.95:015:52
412.95:015:53
512.95:025:54
612.95:025:54
712.95:025:55
812.95:035:55
912.95:035:56
1012.95:035:56
1112.95:045:57
1212.95:045:57
1312.95:045:58
1412.95:055:58
1512.95:055:59
1612.95:056:00
1712.95:066:00
1812.95:066:01
1912.95:076:01
2012.95:076:02
2112.95:086:02
2212.95:086:03
2312.95:096:03
2412.95:096:03
2512.95:096:04
2612.95:106:04
2712.95:106:05
2812.95:116:05
2912.95:126:06
3012.95:126:06
3112.95:136:06

Solar energy in December

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in December, about 6.13 kWh/m².

For context, solar energy here swings from a low near 3.79 kWh/m² to a high of 6.33 kWh/m² in January across the year — December's 6.13 kWh/m² sits near the top of that range.

0246151015202531
Solar energy (kWh/m²)Level
15.8Bright
25.8Bright
35.8Bright
45.9Bright
55.9Bright
65.9Bright
76.0Bright
86.0Bright
96.0Intense
106.0Intense
116.0Intense
126.1Intense
136.1Intense
146.1Intense
156.1Intense
166.2Intense
176.2Intense
186.2Intense
196.2Intense
206.2Intense
216.3Intense
226.3Intense
236.3Intense
246.3Intense
256.3Intense
266.3Intense
276.3Intense
286.3Intense
296.3Intense
306.4Intense
316.4Intense
Planning a trip in December

Is December a good time to visit Una?

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

5.0
Sightseeing
7th-best month of the year
5.6
Beach & pool
3rd-best month of the year

December is a reasonable time to visit Una for sightseeing.

What to pack for Una in December

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

In December, Una sees daytime highs around 28°C and nights near 23°C. Pack light clothes, rain gear and sun protection. About 18 days see rain.

light clothesrain gearsun protection

Sea temperature near Una in December

The nearest coast averages about 27°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 23 km away) is warmest in March at about 28°C and coldest in August near 25°C.

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

24°26°28°30°JanFebMarAprMayJunJulAugSepOctNovDecrefreshingwarmtropicalcomfortable to swim
Sea temperature (°C)Comfort
Jan27Warm
Feb28Warm
Mar28Tropical
Apr28Tropical
May27Warm
Jun26Warm
Jul26Warm
Aug25Warm
Sep25Warm
Oct26Warm
Nov26Warm
Dec27Warm

UV index in Una 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 Una peaks around February 18 at about 15 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near June 22 at about 8 (very high).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeVery highExtremeFeb 18UV 15Jun 22UV 8
UV index (midday)Level
Jan13Extreme
Feb15Extreme
Mar14Extreme
Apr11Extreme
May9Very high
Jun8Very high
Jul8Very high
Aug9Very high
Sep11Extreme
Oct12Extreme
Nov14Extreme
Dec13Extreme
Location & terrain

Where is Una?

Una sits at 15.3°S, 39.1°W, 16 m above sea level, in Brazil. The nearest listed city is Canavieiras, 45 km away.

Topography around Una

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

Within 3 km, the terrain around Una has only modest variations in elevation — a maximum elevation change of 102 m around an average of 43 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 299 m; within 80 km, large variations in elevation — a maximum elevation change of 1,130 m.

The land around Una is covered by trees (91%) within 3 km, trees (72%) within 16 km, and trees (47%), water (30%) and grassland (21%) within 80 km.

3 km
102 m
16 km
299 m
80 km
1,130 m
treesgrasslandartificial surfaceswaterwetlandmangroves
December weather nearby: Canavieiras 45 km · Camacan 47 km · Ilhéus 55 km · Itabuna 61 km · Belmonte 67 km · Ibicaraí 73 km · Itajuípe 76 km · Uruçuca 81 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 Una (-15.2933°, -39.0753°, elevation 16 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).