Igaraçu do Tietê weather in January

In January, Igaraçu do Tietê sees average daytime highs of 29°C and overnight lows near 21°C, with 241 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 14% 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 Igaraçu do Tietê's 12th-clearest and 10th-windiest month. For the whole year in context, see Igaraçu do Tietê's year-round climate.

Daytime high
29°
2nd warmest
Overnight low
21°
12th coldest
Rainfall
241 mm
22.3 wet days
Daylight
13 h 12 min
6:46 AM – 8:01 PM
Cloud cover
75%
12th clearest
Wind
9 km/h
10th windiest
Solar energy
5.55 kWh/m²
Travel score
3.8
out of 10

Igaraçu do Tietê 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 Igaraçu do Tietê reaches about 29°C in the afternoon and slips back to 21°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)
12921
22921
32921
42921
52921
62921
72921
82921
92921
102921
112921
122921
132921
142921
152921
162921
172921
182921
192921
202921
212921
222921
232921
242921
252921
262921
272921
282921
292921
302921
312921

Igaraçu do Tietê 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° / 21°24122.313.23.8
Feb29° / 21°17518.912.83.9
Mar29° / 20°13216.712.24.7
Apr28° / 18°567.411.56.6
May25° / 15°566.210.97.6
Jun25° / 14°404.410.68.1
Jul25° / 14°313.810.88.3
Aug27° / 14°32411.27.9
Sep28° / 16°657.511.96.4
Oct29° / 18°11212.512.55.1
Nov29° / 19°1471513.14.8
Dec29° / 20°18319.813.44.1

Cloud cover in January

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 14% 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 72%. Skies tend to open up as the month goes on.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
12971
22971
32971
42872
52773
62773
72674
82575
92575
102575
112674
122773
132773
142773
152773
162773
172773
182872
192872
202872
212872
222872
232971
242872
252872
262971
272971
283070
293070
303268
313367

Chance of precipitation in January

Any precipitation

Igaraçu do Tietê gets around 241 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 70% and peaks near 72% on the wettest days.

0%20%40%60%80%151015202531
Rain chance (%)
167
267
367
468
568
669
769
870
970
1070
1170
1270
1370
1470
1570
1671
1771
1872
1972
2072
2172
2272
2372
2472
2572
2672
2772
2872
2972
3071
3171

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 59% of days. Sticky, muggy-or-worse air turns up on roughly 86% of them.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)
101166221
201156321
301156222
401146223
501136323
601136224
701126324
801116424
901116325
1001116325
1101106326
1201106326
1302106127
1402106127
1502106127
1602106028
1702115928
1802115928
1902115928
2002125729
2102125729
2202125729
2302135629
2402135530
2502135530
2612135529
2712135529
2813125529
2913125529
3013125529
3113125529

Wind in January

Winds average 9 km/h in January.

Across January, daily wind ranges from about 9 km/h on the calmest days to 9 km/h at its breeziest. It stays fairly steady from day to day.

051015151015202531
Wind speed (km/h)Feels
19calm
29calm
39calm
49calm
59calm
69calm
79calm
89calm
99calm
109calm
119calm
129calm
139calm
149calm
159calm
169calm
179calm
189calm
199calm
209calm
219calm
229calm
239calm
249calm
259calm
269calm
279calm
289calm
299calm
309calm
319calm

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 6:37 AM to 6:56 AM, and sunset from 7:58 PM to 7:59 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
113.46:377:58
213.46:377:58
313.36:387:59
413.36:387:59
513.36:397:59
613.36:407:59
713.36:408:00
813.36:418:00
913.36:428:00
1013.36:428:00
1113.36:438:00
1213.36:448:00
1313.36:448:01
1413.36:458:01
1513.36:468:01
1613.26:468:01
1713.26:478:01
1813.26:488:01
1913.26:488:01
2013.26:498:01
2113.26:508:01
2213.26:508:00
2313.26:518:00
2413.16:528:00
2513.16:528:00
2613.16:538:00
2713.16:548:00
2813.16:547:59
2913.16:557:59
3013.16:567:59
3113.06:567:59

Solar energy in January

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in January, about 5.55 kWh/m².

For context, solar energy here swings from a low near 3.64 kWh/m² to a high of 5.98 kWh/m² in November across the year — January's 5.55 kWh/m² falls in the middle.

0246151015202531
Solar energy (kWh/m²)Level
15.7Bright
25.7Bright
35.7Bright
45.7Bright
55.7Bright
65.6Bright
75.6Bright
85.6Bright
95.6Bright
105.6Bright
115.6Bright
125.6Bright
135.6Bright
145.6Bright
155.6Bright
165.6Bright
175.6Bright
185.6Bright
195.6Bright
205.6Bright
215.6Bright
225.6Bright
235.6Bright
245.6Bright
255.6Bright
265.6Bright
275.6Bright
285.6Bright
295.6Bright
305.6Bright
315.6Bright
Planning a trip in January

Hazard calendar for Igaraçu do Tietê

In seasonPeak

In January, Igaraçu do Tietê sits inside its rainy season season. The full year is below, with each hazard's peak months called out.

Igaraçu do Tietê'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 Igaraçu do Tietê?

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 Igaraçu do Tietê.

What to pack for Igaraçu do Tietê in January

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

In January, Igaraçu do Tietê sees daytime highs around 29°C and nights near 21°C. Pack light clothes and rain gear. Worth having: sun protection. About 22 days see rain.

light clothesrain gearsun protection

UV index in Igaraçu do Tietê 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 Igaraçu do Tietê peaks around January 22 at about 15 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near July 11 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 15Jul 11UV 6
UV index (midday)Level
Jan15Extreme
Feb15Extreme
Mar13Extreme
Apr10Very high
May7High
Jun6High
Jul6High
Aug8Very high
Sep9Very high
Oct11Extreme
Nov13Extreme
Dec14Extreme

Air quality in Igaraçu do Tietê 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 Igaraçu do Tietê 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 Igaraçu do Tietê?

Igaraçu do Tietê sits at 22.5°S, 48.6°W, 496 m above sea level, in Brazil. The nearest listed city is Barra Bonita, 2.0 km away.

Topography around Igaraçu do Tietê

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

Within 3 km, the terrain around Igaraçu do Tietê has only modest variations in elevation — a maximum elevation change of 126 m around an average of 480 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 330 m; within 80 km, large variations in elevation — a maximum elevation change of 679 m.

The land around Igaraçu do Tietê is covered by cropland (32%), artificial surfaces (27%) and trees (20%) within 3 km, cropland (65%) within 16 km, and cropland (44%) and trees (38%) within 80 km.

3 km
126 m
16 km
330 m
80 km
679 m
treesgrasslandcroplandartificial surfacesbare terrainwater
January weather nearby: Barra Bonita 2.0 km · Macatuba 16 km · Jaú 24 km · Dois Córregos 24 km · São Manuel 25 km · Lençóis Paulista 27 km · Pederneiras 28 km · Botucatu 43 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 Igaraçu do Tietê (-22.5092°, -48.5578°, elevation 496 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).