Santa Juliana weather in December

In December, Santa Juliana sees average daytime highs of 27°C and overnight lows near 19°C, with 243 mm of rain across 24.3 wet days and about 13.1 hours of daylight. It is the 7th-warmest and 1st-wettest month of the year here.

Day-to-day highs hold fairly steady near 27°C through the month. The sky is clear or mostly clear about 7% 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 06 min by month's end. Set against the rest of the year, December is Santa Juliana's 12th-clearest and 8th-windiest month. For the whole year in context, see Santa Juliana's year-round climate.

Daytime high
27°
7th warmest
Overnight low
19°
10th coldest
Rainfall
243 mm
24.3 wet days
Daylight
13 h 12 min
6:32 AM – 7:41 PM
Cloud cover
80%
12th clearest
Wind
8 km/h
8th windiest
Solar energy
5.44 kWh/m²
Travel score
4.2
out of 10

Santa Juliana 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 27°C through the month.

A typical December day in Santa Juliana reaches about 27°C in the afternoon and slips back to 19°C overnight — a 8°C spread between the day's warmth and the night's chill. On most days the high lands between 24°C and 30°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)
12719
22719
32719
42719
52719
62719
72719
82719
92719
102719
112719
122719
132719
142719
152719
162719
172719
182719
192719
202719
212719
222719
232719
242719
252719
262719
272719
282719
292719
302719
312719

Santa Juliana weather by month

How December compares with the rest of the year at a glance. December is the 7th-warmest and 1st-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan28° / 20°22622134.5
Feb28° / 19°16218.312.74.7
Mar28° / 19°16219.912.14.9
Apr27° / 18°6110.311.66.5
May26° / 15°294.711.17.8
Jun25° / 14°101.510.98.6
Jul25° / 13°61118.7
Aug27° / 14°11211.38.2
Sep29° / 17°476.811.96.3
Oct29° / 19°10113.412.45.1
Nov28° / 19°17920.612.94.6
Dec27° / 19°24324.313.14.2

Cloud cover in December

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 7% of the time in December, the cloudiest month of the year.

Beyond those clear spells, partly cloudy skies cover about 12% of December, with mostly cloudy or overcast conditions the remaining 82%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
12080
21882
31882
41783
51585
61684
71585
81585
91585
101585
111684
121684
131783
141882
151882
161981
172080
182080
192179
202179
212179
222179
232179
242080
252080
261981
271981
281981
291882
301882
311882

Chance of precipitation in December

Any precipitation

Santa Juliana gets around 243 mm of rain over 24.3 wet days in December, the wettest month. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 77% and peaks near 81% on the wettest days.

0%20%40%60%80%151015202531
Rain chance (%)
176
277
378
479
580
681
781
881
981
1080
1180
1279
1379
1478
1578
1677
1777
1876
1976
2076
2175
2275
2375
2475
2575
2675
2775
2875
2975
3075
3174

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 72% of days. Sticky, muggy-or-worse air turns up on roughly 72% of them.

0%25%50%75%100%151015202531
Comfortable (%)Humid (%)Muggy (%)
143165
242967
332770
432671
532473
622375
722375
822276
922276
1022276
1112277
1212376
1312376
1412475
1512574
1612673
1712772
1812772
1912871
2012970
2112970
2212970
2313069
2412970
2512970
2602971
2702872
2802773
2902773
3002674
3112673

Wind in December

Winds average 8 km/h in December.

Across December, daily wind ranges from about 8 km/h on the calmest days to 8 km/h at its breeziest. It stays fairly steady from day to day.

051015151015202531
Wind speed (km/h)Feels
18calm
28calm
38calm
48calm
58calm
68calm
78calm
88calm
98calm
108calm
118calm
128calm
138calm
148calm
158calm
168calm
178calm
188calm
198calm
208calm
218calm
228calm
238calm
248calm
258calm
268calm
278calm
288calm
298calm
308calm
318calm

Sunrise & sunset in December

DaylightNight

Daylight runs from about 13 h 06 min at the start of December to 13 h 06 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 6:27 AM to 6:39 AM, and sunset from 7:32 PM to 7:48 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
113.16:277:32
213.16:287:33
313.16:287:34
413.16:287:34
513.16:287:35
613.16:287:35
713.16:297:36
813.16:297:36
913.16:297:37
1013.16:297:38
1113.16:307:38
1213.16:307:39
1313.16:307:39
1413.26:317:40
1513.26:317:40
1613.26:327:41
1713.26:327:42
1813.26:327:42
1913.26:337:43
2013.26:337:43
2113.26:347:44
2213.26:347:44
2313.26:357:44
2413.26:357:45
2513.26:367:45
2613.26:367:46
2713.26:377:46
2813.26:377:47
2913.26:387:47
3013.26:387:47
3113.16:397:48

Solar energy in December

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in December, about 5.44 kWh/m².

For context, solar energy here swings from a low near 4.2 kWh/m² to a high of 6.04 kWh/m² in October across the year — December's 5.44 kWh/m² falls in the middle.

0246151015202531
Solar energy (kWh/m²)Level
15.3Bright
25.3Bright
35.3Bright
45.3Bright
55.2Bright
65.2Bright
75.2Bright
85.2Bright
95.2Bright
105.3Bright
115.3Bright
125.3Bright
135.3Bright
145.3Bright
155.4Bright
165.4Bright
175.4Bright
185.5Bright
195.5Bright
205.5Bright
215.5Bright
225.6Bright
235.6Bright
245.6Bright
255.6Bright
265.5Bright
275.5Bright
285.5Bright
295.5Bright
305.5Bright
315.5Bright
Planning a trip in December

Hazard calendar for Santa Juliana

In seasonPeak

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

Santa Juliana'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 Santa Juliana?

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

4.2
Sightseeing
12th-best month of the year
4.4
Beach & pool
12th-best month of the year

December is a reasonable time to visit Santa Juliana for sightseeing.

What to pack for Santa Juliana in December

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

In December, Santa Juliana sees daytime highs around 27°C and nights near 19°C. Pack light clothes and rain gear. Worth having: sun protection. About 24 days see rain.

light clothesrain gearsun protection

UV index in Santa Juliana 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 Santa Juliana peaks around February 10 at about 16 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near June 20 at about 7 (very high).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeVery highExtremeFeb 10UV 16Jun 20UV 7
UV index (midday)Level
Jan15Extreme
Feb16Extreme
Mar14Extreme
Apr11Extreme
May8Very high
Jun7Very high
Jul8Very high
Aug9Very high
Sep11Extreme
Oct12Extreme
Nov14Extreme
Dec14Extreme

Air quality in Santa Juliana 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 Santa Juliana is worst in September — around 22 µg/m³ PM2.5 (moderate), about 3.9× the cleanest month (July, 6 µg/m³).

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

0102030JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateGoodSep 1621 µg/m³Jul 106 µg/m³
PM2.5 (µg/m³)Level
Jan7Good
Feb7Good
Mar7Good
Apr7Good
May7Good
Jun6Good
Jul6Good
Aug11Good
Sep22Moderate
Oct11Good
Nov6Good
Dec6Good
Location & terrain

Where is Santa Juliana?

Santa Juliana sits at 19.3°S, 47.5°W, 936 m above sea level, in Brazil. The nearest listed city is Perdizes, 25 km away.

Topography around Santa Juliana

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

Within 3 km, the terrain around Santa Juliana has only modest variations in elevation — a maximum elevation change of 136 m around an average of 969 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 271 m; within 80 km, large variations in elevation — a maximum elevation change of 779 m.

The land around Santa Juliana is covered by cropland (52%) and grassland (21%) within 3 km, cropland (57%) within 16 km, and cropland (42%), grassland (26%) and trees (25%) within 80 km.

3 km
136 m
16 km
271 m
80 km
779 m
treesshrubsgrasslandcroplandartificial surfacesbare terrainwater
December weather nearby: Perdizes 25 km · Sacramento 63 km · Uberaba 65 km · Monte Carmelo 65 km · Araxá 69 km · Patrocínio 69 km · Igarapava 84 km · Uberlândia 90 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 Santa Juliana (-19.3086°, -47.5253°, elevation 936 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).