São Manuel weather in December

In December, São Manuel sees average daytime highs of 29°C and overnight lows near 20°C, with 184 mm of rain across 19.6 wet days and about 13.4 hours of daylight. It is the 2nd-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 17% 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 São Manuel's 11th-clearest and 5th-windiest month. For the whole year in context, see São Manuel's year-round climate.

Daytime high
29°
2nd warmest
Overnight low
20°
10th coldest
Rainfall
184 mm
19.6 wet days
Daylight
13 h 24 min
6:29 AM – 7:52 PM
Cloud cover
70%
11th clearest
Wind
10 km/h
5th windiest
Solar energy
5.93 kWh/m²
Travel score
4.2
out of 10

São Manuel 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 São Manuel 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 25°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)
12919
22919
32919
42919
52919
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

São Manuel weather by month

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

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan29° / 21°24522.313.23.8
Feb29° / 20°17518.612.84.0
Mar29° / 20°13116.912.24.7
Apr28° / 18°557.511.56.7
May25° / 15°576.410.97.6
Jun24° / 14°434.810.68.1
Jul24° / 13°353.810.78.3
Aug26° / 14°354.111.28.0
Sep28° / 16°68811.96.9
Oct29° / 18°11512.212.55.3
Nov29° / 19°14414.713.14.9
Dec29° / 20°18419.613.44.2

Cloud cover in December

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 17% 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 66%. Skies tend to cloud over as the month goes on.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
13664
23466
33367
43268
53268
63169
73268
83268
93268
103268
113268
123367
133367
143466
153565
163664
173664
183763
193763
203763
213862
223862
233763
243763
253565
263565
273466
283268
293268
303268
313070

Chance of precipitation in December

Any precipitation

São Manuel gets around 184 mm of rain over 19.6 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 63% and peaks near 67% on the wettest days. The odds climb toward the end of the month.

0%20%40%60%80%151015202531
Rain chance (%)
155
256
357
458
559
660
761
861
962
1062
1162
1263
1363
1463
1564
1664
1764
1864
1964
2064
2164
2264
2365
2465
2565
2666
2766
2866
2967
3067
3167

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 57% of days. Sticky, muggy-or-worse air turns up on roughly 70% of them.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)
121230506
221129517
321028537
421028528
521027538
62927539
71926559
819265410
918255610
1018255610
1118255511
1218245611
1317245711
1407245811
1507235812
1606235912
1706235912
1806235813
1906235813
2005225914
2105225914
2204216114
2304216015
2403206215
2503206116
2603196117
2703196117
2802186218
2902186119
3002176219
3102176120

Wind in December

Winds average 10 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
810calm
910calm
1010calm
1110calm
1210calm
1310calm
1410calm
1510calm
1610calm
1710calm
1810calm
1910calm
2010calm
2110calm
2210calm
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 6:25 AM to 6:36 AM, and sunset from 7:43 PM to 7:59 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
113.36:257:43
213.36:257:44
313.36:257:44
413.36:267:45
513.36:267:45
613.36:267:46
713.36:267:47
813.36:267:47
913.46:277:48
1013.46:277:49
1113.46:277:49
1213.46:277:50
1313.46:287:50
1413.46:287:51
1513.46:287:52
1613.46:297:52
1713.46:297:53
1813.46:307:53
1913.46:307:54
2013.46:307:54
2113.46:317:55
2213.46:317:55
2313.46:327:56
2413.46:327:56
2513.46:337:56
2613.46:337:57
2713.46:347:57
2813.46:347:58
2913.46:357:58
3013.46:367:58
3113.46:367:59

Solar energy in December

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in December, about 5.93 kWh/m².

For context, solar energy here swings from a low near 3.56 kWh/m² to a high of 5.97 kWh/m² in November across the year — December's 5.93 kWh/m² sits near the top of that range.

0246151015202531
Solar energy (kWh/m²)Level
16.0Bright
26.0Bright
36.0Bright
45.9Bright
55.9Bright
65.9Bright
75.9Bright
85.9Bright
95.9Bright
105.9Bright
115.9Bright
125.9Bright
135.9Bright
145.9Bright
155.9Bright
165.9Bright
175.9Bright
185.9Bright
195.9Bright
206.0Bright
216.0Bright
226.0Bright
236.0Bright
245.9Bright
255.9Bright
265.9Bright
275.9Bright
285.9Bright
295.8Bright
305.8Bright
315.8Bright
Planning a trip in December

Hazard calendar for São Manuel

In seasonPeak

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

São Manuel'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 São Manuel?

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

4.2
Sightseeing
10th-best month of the year
5.4
Beach & pool
10th-best month of the year

December is a reasonable time to visit São Manuel for sightseeing.

What to pack for São Manuel in December

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

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

light clothesrain gearsun protection

UV index in São Manuel 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 São Manuel peaks around January 21 at about 15 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near July 12 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 12UV 6
UV index (midday)Level
Jan15Extreme
Feb15Extreme
Mar12Extreme
Apr9Very high
May7High
Jun6High
Jul6High
Aug8Very high
Sep8Very high
Oct11Extreme
Nov13Extreme
Dec14Extreme

Air quality in São Manuel 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 São Manuel is worst in September — around 22 µg/m³ PM2.5 (moderate), about 2.4× the cleanest month (November, 9 µg/m³).

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

0102030JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateGoodSep 1022 µg/m³Nov 239 µg/m³
PM2.5 (µg/m³)Level
Jan10Good
Feb10Good
Mar10Good
Apr11Good
May13Moderate
Jun14Moderate
Jul14Moderate
Aug22Moderate
Sep22Moderate
Oct17Moderate
Nov9Good
Dec9Good
Location & terrain

Where is São Manuel?

São Manuel sits at 22.7°S, 48.6°W, 704 m above sea level, in Brazil. The nearest listed city is Botucatu, 21 km away.

Topography around São Manuel

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

Within 3 km, the terrain around São Manuel has only modest variations in elevation — a maximum elevation change of 152 m around an average of 731 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 457 m; within 80 km, large variations in elevation — a maximum elevation change of 645 m.

The land around São Manuel is covered by cropland (38%), artificial surfaces (21%) and trees (20%) within 3 km, cropland (57%) and trees (28%) within 16 km, and cropland (40%) and trees (39%) within 80 km.

3 km
152 m
16 km
457 m
80 km
645 m
treesgrasslandcroplandartificial surfaceswater
December weather nearby: Botucatu 21 km · Igaraçu do Tietê 25 km · Barra Bonita 26 km · Lençóis Paulista 28 km · Macatuba 29 km · Itatinga 41 km · Dois Córregos 45 km · Pederneiras 47 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 São Manuel (-22.7311°, -48.5706°, elevation 704 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).