Santo Antônio de Posse weather in January

In January, Santo Antônio de Posse sees average daytime highs of 29°C and overnight lows near 20°C, with 275 mm of rain across 22.3 wet days and about 13.2 hours of daylight. It is the 2nd-warmest and 1st-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 January, and the air most often feels muggy.

Daylight stretches from about 13 h 24 min at the start of January to 13 hours by month's end. Set against the rest of the year, January is Santo Antônio de Posse's 12th-clearest and 9th-windiest month. For the whole year in context, see Santo Antônio de Posse's year-round climate.

Daytime high
29°
2nd warmest
Overnight low
20°
12th coldest
Rainfall
275 mm
22.3 wet days
Daylight
13 h 12 min
6:40 AM – 7:54 PM
Cloud cover
75%
12th clearest
Wind
7 km/h
9th windiest
Solar energy
5.6 kWh/m²
Travel score
3.8
out of 10

Santo Antônio de Posse is human settlement in Brazil.

Air quality: WHO Ambient Air Quality Database. Density & description: Wikidata (CC0), GeoNames.

Temperature in January

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 29°C through the month.

A typical January day in Santo Antônio de Posse 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 33°C. Set against its neighbours, January runs on par with December and on par with February.

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
293020
303020
313020

Santo Antônio de Posse weather by month

How January compares with the rest of the year at a glance. January is the 2nd-warmest and 1st-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan29° / 20°27522.313.23.8
Feb30° / 20°18818.612.83.9
Mar29° / 19°14917.612.24.6
Apr28° / 17°738.711.56.4
May25° / 15°646.310.97.6
Jun25° / 13°434.610.68.1
Jul25° / 13°39410.88.2
Aug27° / 14°334.111.27.9
Sep28° / 16°867.911.96.3
Oct29° / 18°13013.512.55.0
Nov29° / 19°18216.713.14.7
Dec29° / 20°22420.413.44.1

Cloud cover in January

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 15% of the time in January, the cloudiest month of the year.

Beyond those clear spells, partly cloudy skies cover about 15% of January, with mostly cloudy or overcast conditions the remaining 70%. Skies tend to open up as the month goes on.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
13169
23070
32971
42872
52872
62872
72773
82773
92872
102872
112872
122971
132971
142971
152971
162971
172971
182971
192971
202971
213070
222971
233070
243070
253070
263169
273268
283268
293367
303466
313466

Chance of precipitation in January

Any precipitation

Santo Antônio de Posse gets around 275 mm of rain over 22.3 wet days in January, the wettest month. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 71% and peaks near 72% on the wettest days.

0%20%40%60%80%151015202531
Rain chance (%)
169
269
370
470
570
670
771
871
971
1071
1171
1271
1371
1471
1571
1671
1771
1872
1972
2072
2172
2272
2372
2472
2572
2672
2772
2872
2971
3071
3170

Humidity in January

DryComfortableHumidMuggyOppressiveMiserable

Most of January feels muggy — the stacked bands show each day's mix of comfort levels, read off the dew point.

By dew point, January lands in the muggy band about 71% of days. Sticky, muggy-or-worse air turns up on roughly 81% of them.

0%25%50%75%100%151015202531
Comfortable (%)Humid (%)Muggy (%)Oppressive (%)
1119719
2119719
3119719
4118729
51187110
61187110
70187210
80187210
90187210
101187110
111187110
121187110
131187110
141187110
151187110
161187110
171187110
181177210
191177210
201177210
211177210
221177210
232167210
242167210
252167111
262167111
273157111
283157111
293157111
304147111
314147012

Wind in January

Winds average 7 km/h in January.

Across January, 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
87calm
97calm
107calm
117calm
127calm
137calm
147calm
157calm
167calm
177calm
187calm
197calm
207calm
217calm
227calm
237calm
247calm
257calm
267calm
277calm
287calm
297calm
307calm
317calm

Sunrise & sunset in January

DaylightNight

Daylight runs from about 13 h 24 min at the start of January to 13 hours by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 24 minutes over January. Sunrise moves from 6:30 AM to 6:50 AM, and sunset from 7:52 PM to 7:52 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
113.46:307:52
213.46:317:52
313.46:317:52
413.36:327:53
513.36:327:53
613.36:337:53
713.36:347:53
813.36:347:53
913.36:357:54
1013.36:367:54
1113.36:367:54
1213.36:377:54
1313.36:387:54
1413.36:387:54
1513.36:397:54
1613.26:407:54
1713.26:407:54
1813.26:417:54
1913.26:427:54
2013.26:427:54
2113.26:437:54
2213.26:447:54
2313.26:447:54
2413.16:457:54
2513.16:467:54
2613.16:467:54
2713.16:477:53
2813.16:487:53
2913.16:487:53
3013.16:497:53
3113.06:507:52

Solar energy in January

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in January, about 5.6 kWh/m².

For context, solar energy here swings from a low near 3.75 kWh/m² to a high of 6.01 kWh/m² in November across the year — January's 5.6 kWh/m² falls in the middle.

0246151015202531
Solar energy (kWh/m²)Level
15.7Bright
25.7Bright
35.7Bright
45.7Bright
55.7Bright
65.7Bright
75.7Bright
85.7Bright
95.7Bright
105.7Bright
115.7Bright
125.7Bright
135.7Bright
145.7Bright
155.7Bright
165.7Bright
175.7Bright
185.7Bright
195.7Bright
205.7Bright
215.7Bright
225.7Bright
235.7Bright
245.7Bright
255.7Bright
265.7Bright
275.7Bright
285.7Bright
295.7Bright
305.7Bright
315.7Bright
Planning a trip in January

Hazard calendar for Santo Antônio de Posse

In seasonPeak

In January, Santo Antônio de Posse sits inside its rainy season season. The full year is below, with each hazard's peak months called out.

Santo Antônio de Posse'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 January a good time to visit Santo Antônio de Posse?

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

3.8
Sightseeing
12th-best month of the year
5.0
Beach & pool
12th-best month of the year

January is a weaker month for outdoor sightseeing in Santo Antônio de Posse.

What to pack for Santo Antônio de Posse in January

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

In January, Santo Antônio de Posse sees daytime highs around 29°C and nights near 20°C. Pack light clothes and rain gear. Worth having: sun protection. About 22 days see rain.

light clothesrain gearsun protection

UV index in Santo Antônio de Posse in January

LowModerateHighVery highExtreme

Clear-sky midday UV in January peaks around 15 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Santo Antônio de Posse peaks around January 20 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 20UV 15Jul 12UV 6
UV index (midday)Level
Jan15Extreme
Feb15Extreme
Mar12Extreme
Apr9Very high
May7High
Jun6High
Jul6High
Aug8Very high
Sep8Very high
Oct11Extreme
Nov14Extreme
Dec14Extreme

Air quality in Santo Antônio de Posse in January

GoodModeratePoorUnhealthyVery unhealthy

Average fine-particle pollution (PM2.5) through the year — so you can see where January falls, not just the annual average.

Air quality in Santo Antônio de Posse is worst in September — around 32 µg/m³ PM2.5 (moderate), about 2.1× the cleanest month (December, 16 µg/m³).

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

010203040JanFebMarAprMayJunJulAugSepOctNovDecModerateSep 1032 µg/m³Dec 1516 µg/m³
PM2.5 (µg/m³)Level
Jan16Moderate
Feb17Moderate
Mar19Moderate
Apr22Moderate
May26Moderate
Jun28Moderate
Jul30Moderate
Aug31Moderate
Sep32Moderate
Oct22Moderate
Nov16Moderate
Dec16Moderate
Location & terrain

Where is Santo Antônio de Posse?

Santo Antônio de Posse sits at 22.6°S, 46.9°W, 669 m above sea level, in Brazil. The nearest listed city is Jaguariúna, 13 km away.

Topography around Santo Antônio de Posse

How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Santo Antônio de Posse.

Within 3 km, the terrain around Santo Antônio de Posse has only modest variations in elevation — a maximum elevation change of 153 m around an average of 657 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 475 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,218 m.

The land around Santo Antônio de Posse is covered by cropland (33%), trees (28%) and grassland (26%) within 3 km, trees (33%), cropland (33%) and grassland (28%) within 16 km, and trees (35%), grassland (30%) and cropland (27%) within 80 km.

3 km
153 m
16 km
475 m
80 km
1,218 m
treesgrasslandcroplandartificial surfaceswater
January weather nearby: Jaguariúna 13 km · Terra Preta 14 km · Holambra 14 km · Amparo 19 km · Mogi Mirim 20 km · Itapira 21 km · Serra Negra 22 km · Artur Nogueira 26 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 Santo Antônio de Posse (-22.6061°, -46.9194°, elevation 669 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).