Birigui weather in January

In January, Birigui sees average daytime highs of 31°C and overnight lows near 23°C, with 244 mm of rain across 22.3 wet days and about 13.2 hours of daylight. It is the 6th-warmest and 1st-wettest month of the year here.

Day-to-day highs hold fairly steady near 31°C through the month. The sky is clear or mostly clear about 16% of the time in January, and the air most often feels oppressive.

Daylight stretches from about 13 h 18 min at the start of January to 13 hours by month's end. Set against the rest of the year, January is Birigui's 12th-clearest and 10th-windiest month. For the whole year in context, see Birigui's year-round climate.

Daytime high
31°
6th warmest
Overnight low
23°
12th coldest
Rainfall
244 mm
22.3 wet days
Daylight
13 h 12 min
6:56 AM – 8:06 PM
Cloud cover
74%
12th clearest
Wind
8 km/h
10th windiest
Solar energy
5.62 kWh/m²
Travel score
3.4
out of 10

Birigui 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 31°C through the month.

A typical January day in Birigui reaches about 31°C in the afternoon and slips back to 23°C overnight — a 8°C spread between the day's warmth and the night's chill. On most days the high lands between 27°C and 34°C. Set against its neighbours, January runs on par with December and on par with February.

20°25°30°35°151015202531
Avg high (°C)Avg low (°C)
13123
23123
33123
43123
53023
63023
73023
83023
93023
103023
113023
123023
133023
143023
153023
163123
173123
183123
193123
203123
213123
223123
233123
243123
253123
263123
273123
283123
293123
303123
313123

How January really feels in Birigui

Once humidity and wind are folded in, January averages 31 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
31
heat index over the day's high
Days feeling ≤ C
0
wind chill below the day's low

The story in January is heat — humidity pushes the afternoon "feels like" well above the raw temperature.

Birigui weather by month

How January compares with the rest of the year at a glance. January is the 6th-warmest and 1st-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan31° / 23°24422.313.23.4
Feb31° / 23°17518.712.73.5
Mar31° / 22°14117.912.24.0
Apr30° / 20°577.611.55.5
May27° / 17°465.5117.2
Jun27° / 16°293.510.77.8
Jul28° / 16°192.410.87.8
Aug30° / 17°202.811.36.3
Sep31° / 19°586.511.94.9
Oct32° / 21°10211.612.54.1
Nov31° / 21°14215.2133.8
Dec31° / 22°18220.313.33.5

Cloud cover in January

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 16% of the time in January, the cloudiest month of the year.

Beyond those clear spells, partly cloudy skies cover about 14% of January, with mostly cloudy or overcast conditions the remaining 71%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
13070
22971
32872
42773
52773
62575
72575
82575
92575
102575
112575
122674
132773
142773
152773
162872
172872
182971
193070
203169
213169
223169
233169
243268
253466
263466
273466
283466
293664
303664
313664

Chance of precipitation in January

Any precipitation

Birigui gets around 244 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 74% on the wettest days.

0%20%40%60%80%151015202531
Rain chance (%)
171
272
373
473
573
674
774
873
973
1073
1172
1272
1371
1471
1570
1670
1770
1870
1970
2070
2170
2269
2369
2469
2569
2669
2769
2869
2969
3069
3169

Humidity in January

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, January lands in the oppressive band about 75% of days. Sticky, muggy-or-worse air turns up on roughly 97% of them.

0%25%50%75%100%151015202531
Comfortable (%)Humid (%)Muggy (%)Oppressive (%)Miserable (%)
10325720
20324721
30324721
40323731
50323731
60223741
70222751
80222751
90222751
100222751
110222751
120223741
130223741
140223741
150223741
160223741
170223741
180222751
190222751
200322741
210322741
220321751
230321751
240320761
250320761
260319771
270319771
280318781
291318771
301318762
311418752

Wind in January

Winds average 8 km/h in January.

Across January, 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 January

DaylightNight

Daylight runs from about 13 h 18 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 18 minutes over January. Sunrise moves from 6:46 AM to 7:05 AM, and sunset from 8:03 PM to 8:04 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
113.36:468:03
213.36:478:03
313.36:478:03
413.36:488:04
513.36:498:04
613.26:498:04
713.26:508:04
813.26:518:05
913.26:518:05
1013.26:528:05
1113.26:528:05
1213.26:538:05
1313.26:548:05
1413.26:548:05
1513.26:558:06
1613.26:568:06
1713.26:568:06
1813.16:578:06
1913.16:588:06
2013.16:588:06
2113.16:598:06
2213.17:008:06
2313.17:008:05
2413.17:018:05
2513.17:028:05
2613.07:028:05
2713.07:038:05
2813.07:048:05
2913.07:048:04
3013.07:058:04
3113.07:058:04

Solar energy in January

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in January, about 5.62 kWh/m².

For context, solar energy here swings from a low near 3.8 kWh/m² to a high of 6.12 kWh/m² in November across the year — January's 5.62 kWh/m² falls in the middle.

0246151015202531
Solar energy (kWh/m²)Level
15.8Bright
25.8Bright
35.7Bright
45.7Bright
55.7Bright
65.7Bright
75.7Bright
85.7Bright
95.7Bright
105.6Bright
115.6Bright
125.6Bright
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 Birigui

In seasonPeak

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

Birigui'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 January a good time to visit Birigui?

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

3.4
Sightseeing
12th-best month of the year
4.8
Beach & pool
12th-best month of the year

January is a weaker month for outdoor sightseeing in Birigui.

What to pack for Birigui in January

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

In January, Birigui sees daytime highs around 31°C and nights near 23°C. Pack light clothes and rain gear. Worth having: sun protection. About 22 days see rain.

light clothesrain gearsun protection

UV index in Birigui 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 Birigui peaks around January 22 at about 15 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near June 23 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 22UV 15Jun 23UV 6
UV index (midday)Level
Jan15Extreme
Feb15Extreme
Mar13Extreme
Apr10Extreme
May8Very high
Jun6High
Jul6High
Aug8Very high
Sep9Very high
Oct10Extreme
Nov13Extreme
Dec13Extreme

Air quality in Birigui 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 Birigui is worst in September — around 21 µg/m³ PM2.5 (moderate), about 3.0× the cleanest month (November, 7 µg/m³).

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

0102030JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateGoodSep 1620 µg/m³Nov 227 µg/m³
PM2.5 (µg/m³)Level
Jan8Good
Feb8Good
Mar8Good
Apr9Good
May9Good
Jun9Good
Jul8Good
Aug13Moderate
Sep21Moderate
Oct13Moderate
Nov7Good
Dec7Good
Location & terrain

Where is Birigui?

Birigui sits at 21.3°S, 50.3°W, 409 m above sea level, in Brazil. The nearest listed city is Araçatuba, 13 km away.

Topography around Birigui

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

Within 3 km, the terrain around Birigui has only modest variations in elevation — a maximum elevation change of 107 m around an average of 418 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 164 m; within 80 km, significant variations in elevation — a maximum elevation change of 283 m.

The land around Birigui is covered by artificial surfaces (59%) within 3 km, cropland (58%) and grassland (24%) within 16 km, and cropland (57%) and grassland (25%) within 80 km.

3 km
107 m
16 km
164 m
80 km
283 m
treesgrasslandcroplandartificial surfaceswater
January weather nearby: Araçatuba 13 km · Penápolis 31 km · Guararapes 32 km · Buritama 32 km · Valparaíso 55 km · Promissão 57 km · Tupã 74 km · Lins 76 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 Birigui (-21.2886°, -50.34°, elevation 409 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).