São João do Piauí weather in January

In January, São João do Piauí sees average daytime highs of 32°C and overnight lows near 24°C, with 147 mm of rain across 16.5 wet days and about 12.4 hours of daylight. It is the 9th-warmest and 1st-wettest month of the year here.

Day-to-day highs hold fairly steady near 32°C through the month. The sky is clear or mostly clear about 21% of the time in January, and the air most often feels oppressive.

Daylight stretches from about 12 h 30 min at the start of January to 12 h 24 min by month's end. Set against the rest of the year, January is São João do Piauí's 10th-clearest and 10th-windiest month. For the whole year in context, see São João do Piauí's year-round climate.

Daytime high
32°
9th warmest
Overnight low
24°
9th coldest
Rainfall
147 mm
16.5 wet days
Daylight
12 h 24 min
5:45 AM – 6:11 PM
Cloud cover
67%
10th clearest
Wind
7 km/h
10th windiest
Solar energy
5.47 kWh/m²
Travel score
3.2
out of 10

São João do Piauí is 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 32°C through the month.

A typical January day in São João do Piauí reaches about 32°C in the afternoon and slips back to 24°C overnight — a 9°C spread between the day's warmth and the night's chill. On most days the high lands between 29°C and 36°C. Set against its neighbours, January runs about 1°C cooler than December and on par with February.

20°25°30°35°40°151015202531
Avg high (°C)Avg low (°C)
13324
23324
33324
43324
53324
63324
73324
83324
93324
103324
113224
123224
133224
143224
153224
163224
173224
183224
193224
203224
213223
223223
233223
243223
253223
263223
273223
283223
293223
303223
313223

How January really feels in São João do Piauí

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.

São João do Piauí weather by month

How January compares with the rest of the year at a glance. January is the 9th-warmest and 1st-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan32° / 24°14716.512.43.2
Feb32° / 23°1391512.33.4
Mar32° / 23°13916.312.13.5
Apr32° / 23°749.911.83.8
May33° / 24°22311.64.0
Jun33° / 23°10.311.54.6
Jul33° / 22°10.211.64.6
Aug34° / 22°0011.73.8
Sep36° / 24°20.2122.8
Oct36° / 25°182.112.22.4
Nov35° / 25°556.312.42.8
Dec34° / 25°759.812.53.2

Cloud cover in January

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 21% of the time in January.

Beyond those clear spells, partly cloudy skies cover about 17% of January, with mostly cloudy or overcast conditions the remaining 63%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
14159
24159
34159
44159
54159
64159
74159
84159
94060
104060
114060
123862
133862
143763
153763
163664
173565
183466
193565
203466
213466
223466
233466
243466
253466
263466
273565
283565
293565
303565
313565

Chance of precipitation in January

Any precipitation

São João do Piauí gets around 147 mm of rain over 16.5 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 53% and peaks near 59% on the wettest days. The odds climb toward the end of the month.

0%20%40%60%151015202531
Rain chance (%)
143
244
345
445
546
646
747
847
948
1049
1149
1250
1351
1452
1553
1654
1755
1856
1957
2058
2159
2259
2359
2459
2559
2659
2758
2857
2956
3055
3154

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 55% of days. Sticky, muggy-or-worse air turns up on roughly 82% of them.

0%25%50%75%100%151015202531
Comfortable (%)Humid (%)Muggy (%)Oppressive (%)
13213442
23213442
33203343
43203344
53193245
63193246
73193147
83193047
94192948
104182949
114182850
124182751
134172752
144172653
154162654
164162555
174152556
184142458
194142458
204132459
214122460
224122361
233112363
243112363
253102364
263102463
273102463
283102463
293102463
302102464
312102464

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.

051015151015202531
Wind speed (km/h)Feels
18calm
28calm
38calm
48calm
58calm
68calm
78calm
88calm
98calm
108calm
118calm
128calm
138calm
148calm
158calm
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 12 h 30 min at the start of January to 12 h 24 min by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 6 minutes over January. Sunrise moves from 5:38 AM to 5:51 AM, and sunset from 6:07 PM to 6:13 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
112.55:386:07
212.55:386:07
312.55:396:07
412.55:396:08
512.55:406:08
612.55:406:08
712.55:416:09
812.55:416:09
912.55:426:09
1012.55:426:10
1112.55:436:10
1212.55:436:10
1312.45:446:11
1412.45:446:11
1512.45:456:11
1612.45:456:11
1712.45:466:12
1812.45:466:12
1912.45:476:12
2012.45:476:12
2112.45:476:12
2212.45:486:13
2312.45:486:13
2412.45:496:13
2512.45:496:13
2612.45:496:13
2712.45:506:13
2812.45:506:13
2912.45:516:13
3012.45:516:13
3112.45:516:13

Solar energy in January

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in January, about 5.47 kWh/m².

For context, solar energy here swings from a low near 4.81 kWh/m² to a high of 6.8 kWh/m² in October across the year — January's 5.47 kWh/m² falls in the middle.

0246151015202531
Solar energy (kWh/m²)Level
15.7Bright
25.7Bright
35.7Bright
45.7Bright
55.6Bright
65.6Bright
75.6Bright
85.6Bright
95.6Bright
105.5Bright
115.5Bright
125.5Bright
135.5Bright
145.5Bright
155.4Bright
165.4Bright
175.4Bright
185.4Bright
195.4Bright
205.4Bright
215.4Bright
225.4Bright
235.4Bright
245.4Bright
255.4Bright
265.4Bright
275.4Bright
285.4Bright
295.4Bright
305.5Bright
315.5Bright
Planning a trip in January

Hazard calendar for São João do Piauí

In seasonPeak

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

São João do Piauí's rainy season runs December–April, 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 São João do Piauí?

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

3.2
Sightseeing
8th-best month of the year
5.4
Beach & pool
12th-best month of the year

January is a weaker month for outdoor sightseeing in São João do Piauí.

What to pack for São João do Piauí in January

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

In January, São João do Piauí sees daytime highs around 32°C and nights near 24°C. Pack light clothes and rain gear. Worth having: sun protection. About 17 days see rain.

light clothesrain gearsun protection

UV index in São João do Piauí in January

LowModerateHighVery highExtreme

Clear-sky midday UV in January 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 João do Piauí peaks around March 11 at about 15 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near July 14 at about 10 (very high).

The index reaches 3 or more — the level where the WHO recommends sun protection — every month of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeVery highExtremeMar 11UV 15Jul 14UV 10
UV index (midday)Level
Jan14Extreme
Feb15Extreme
Mar15Extreme
Apr13Extreme
May10Extreme
Jun10Very high
Jul10Very high
Aug10Very high
Sep12Extreme
Oct12Extreme
Nov12Extreme
Dec12Extreme
Location & terrain

Where is São João do Piauí?

São João do Piauí sits at 8.4°S, 42.2°W, 219 m above sea level, in Brazil. The nearest listed city is Canto do Buriti, 82 km away.

Topography around São João do Piauí

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

Within 3 km, the terrain around São João do Piauí has only modest variations in elevation — a maximum elevation change of 90 m around an average of 227 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 204 m; within 80 km, significant variations in elevation — a maximum elevation change of 518 m.

The land around São João do Piauí is covered by shrubs (49%) and grassland (28%) within 3 km, shrubs (88%) within 16 km, and shrubs (94%) within 80 km.

3 km
90 m
16 km
204 m
80 km
518 m
treesshrubsgrasslandcroplandartificial surfacesbare terrainwater
January weather nearby: Canto do Buriti 82 km · São Raimundo Nonato 88 km · Paulistana 123 km · Afrânio 138 km · Remanso 142 km · Oeiras 149 km · Campo Alegre de Lourdes 154 km · Sento Sé 159 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 João do Piauí (-8.3581°, -42.2467°, elevation 219 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. Topography is sampled from the Copernicus DEM GLO-90 elevation model (© ESA/Airbus) and ESA WorldCover 2021 land cover (CC BY 4.0).