Tambaú weather in December

In December, Tambaú sees average daytime highs of 29°C and overnight lows near 20°C, with 203 mm of rain across 21.4 wet days and about 13.3 hours of daylight. It is the 7th-warmest and 2nd-wettest month of the year here.

Day-to-day highs hold fairly steady near 29°C through the month. The sky is clear or mostly clear about 15% of the time in December, and the air most often feels muggy.

Daylight stretches from about 13 h 12 min at the start of December to 13 h 18 min by month's end. Set against the rest of the year, December is Tambaú's 11th-clearest and 6th-windiest month. For the whole year in context, see Tambaú's year-round climate.

Daytime high
29°
7th warmest
Overnight low
20°
10th coldest
Rainfall
203 mm
21.4 wet days
Daylight
13 h 18 min
6:26 AM – 7:45 PM
Cloud cover
71%
11th clearest
Wind
8 km/h
6th windiest
Solar energy
5.83 kWh/m²
Travel score
3.9
out of 10

Tambaú 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 29°C through the month.

A typical December day in Tambaú reaches about 29°C in the afternoon and slips back to 20°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 32°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)
12920
22920
32920
42920
52920
62920
72920
82920
92920
102920
112920
122920
132920
142920
152920
162920
172920
182920
192920
202920
212920
222920
232920
242920
252920
262920
272920
282920
292920
302920
312920

Tambaú weather by month

How December compares with the rest of the year at a glance. December is the 7th-warmest and 2nd-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan29° / 21°24021.913.23.8
Feb30° / 20°16618.312.73.9
Mar29° / 20°14417.412.24.5
Apr29° / 18°608.311.56.1
May26° / 15°506117.5
Jun26° / 14°293.410.78.2
Jul26° / 13°232.610.88.3
Aug28° / 15°213.211.37.6
Sep29° / 17°677.511.95.8
Oct30° / 19°10613.412.54.6
Nov29° / 19°16417.1134.4
Dec29° / 20°20321.413.33.9

Cloud cover in December

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 15% 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 67%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
13664
23466
33466
43466
53466
63268
73268
83367
93367
103268
113367
123367
133466
143565
153565
163466
173466
183466
193466
203466
213565
223466
233367
243367
253268
263169
273070
282971
292872
302773
312773

Chance of precipitation in December

Any precipitation

Tambaú gets around 203 mm of rain over 21.4 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 69% and peaks near 72% on the wettest days. The odds climb toward the end of the month.

0%20%40%60%80%151015202531
Rain chance (%)
161
262
363
463
564
665
766
866
967
1068
1168
1269
1369
1470
1570
1671
1771
1871
1971
2072
2172
2272
2372
2472
2572
2672
2772
2872
2972
3072
3171

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 70% of days. Sticky, muggy-or-worse air turns up on roughly 76% of them.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)
11830574
21829584
31728595
41627615
51626625
61525645
71524655
81423675
91422685
100321705
110321715
120320725
130220735
140220726
150219736
160219736
170219736
180219736
190119737
200119737
210119737
220119737
230119728
240118738
250118738
260117739
270117739
2801167310
2901157410
3001157410
3101157410

Wind in December

Winds average 8 km/h in December.

Across December, daily wind ranges from about 7 km/h on the calmest days to 8 km/h at its breeziest. It stays fairly steady from day to day.

0246810151015202531
Wind speed (km/h)Feels
18calm
28calm
38calm
48calm
58calm
68calm
78calm
88calm
98calm
108calm
118calm
128calm
138calm
148calm
158calm
168calm
177calm
187calm
197calm
207calm
217calm
227calm
237calm
247calm
257calm
267calm
277calm
287calm
297calm
307calm
317calm

Sunrise & sunset in December

DaylightNight

Daylight runs from about 13 h 12 min at the start of December to 13 h 18 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 6:22 AM to 6:33 AM, and sunset from 7:36 PM to 7:51 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
113.26:227:36
213.26:227:36
313.26:227:37
413.36:227:38
513.36:237:38
613.36:237:39
713.36:237:40
813.36:237:40
913.36:237:41
1013.36:247:41
1113.36:247:42
1213.36:247:43
1313.36:257:43
1413.36:257:44
1513.36:257:44
1613.36:267:45
1713.36:267:45
1813.36:277:46
1913.36:277:46
2013.36:277:47
2113.36:287:47
2213.36:287:48
2313.36:297:48
2413.36:297:49
2513.36:307:49
2613.36:307:50
2713.36:317:50
2813.36:317:50
2913.36:327:51
3013.36:327:51
3113.36:337:51

Solar energy in December

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in December, about 5.83 kWh/m².

For context, solar energy here swings from a low near 3.87 kWh/m² to a high of 5.96 kWh/m² in October across the year — December's 5.83 kWh/m² sits near the top of that range.

0246151015202531
Solar energy (kWh/m²)Level
15.8Bright
25.8Bright
35.8Bright
45.8Bright
55.8Bright
65.8Bright
75.8Bright
85.8Bright
95.8Bright
105.8Bright
115.8Bright
125.8Bright
135.8Bright
145.8Bright
155.8Bright
165.8Bright
175.8Bright
185.8Bright
195.8Bright
205.8Bright
215.8Bright
225.8Bright
235.8Bright
245.8Bright
255.8Bright
265.8Bright
275.8Bright
285.7Bright
295.7Bright
305.7Bright
315.7Bright
Planning a trip in December

Hazard calendar for Tambaú

In seasonPeak

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

Tambaú'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 Tambaú?

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

3.9
Sightseeing
10th-best month of the year
5.1
Beach & pool
11th-best month of the year

December is a weaker month for outdoor sightseeing in Tambaú.

What to pack for Tambaú in December

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

In December, Tambaú sees daytime highs around 29°C and nights near 20°C. Pack light clothes and rain gear. Worth having: sun protection. About 21 days see rain.

light clothesrain gearsun protection

UV index in Tambaú 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 Tambaú peaks around January 21 at about 15 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near July 10 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 21UV 15Jul 10UV 6
UV index (midday)Level
Jan15Extreme
Feb15Extreme
Mar13Extreme
Apr10Very high
May7Very high
Jun6High
Jul6High
Aug8Very high
Sep9Very high
Oct11Extreme
Nov14Extreme
Dec14Extreme

Air quality in Tambaú 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 Tambaú is worst in September — around 32 µg/m³ PM2.5 (moderate), about 3.2× the cleanest month (November, 10 µg/m³).

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

010203040JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateGoodSep 1430 µg/m³Nov 2310 µg/m³
PM2.5 (µg/m³)Level
Jan11Good
Feb12Good
Mar12Good
Apr13Moderate
May15Moderate
Jun15Moderate
Jul16Moderate
Aug23Moderate
Sep32Moderate
Oct16Moderate
Nov10Good
Dec10Good
Location & terrain

Where is Tambaú?

Tambaú sits at 21.7°S, 47.3°W, 703 m above sea level, in Brazil. The nearest listed city is Santa Cruz das Palmeiras, 14 km away.

Topography around Tambaú

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

Within 3 km, the terrain around Tambaú has only modest variations in elevation — a maximum elevation change of 124 m around an average of 716 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 431 m; within 80 km, large variations in elevation — a maximum elevation change of 1,126 m.

The land around Tambaú is covered by cropland (32%), trees (26%) and grassland (23%) within 3 km, cropland (48%) and trees (35%) within 16 km, and cropland (41%) and trees (38%) within 80 km.

3 km
124 m
16 km
431 m
80 km
1,126 m
treesgrasslandcroplandartificial surfacesbare terrain
December weather nearby: Santa Cruz das Palmeiras 14 km · Casa Branca 21 km · Santa Rita do Passa Quatro 21 km · Porto Ferreira 27 km · Santa Rosa de Viterbo 27 km · Pirassununga 36 km · Mococa 38 km · São José do Rio Pardo 42 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 Tambaú (-21.705°, -47.2744°, elevation 703 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).