Guaraí weather in January

In January, Guaraí sees average daytime highs of 30°C and overnight lows near 22°C, with 277 mm of rain across 27.5 wet days and about 12.5 hours of daylight. It is the 12th-warmest and 1st-wettest month of the year here.

Day-to-day highs hold fairly steady near 30°C through the month. The sky is clear or mostly clear about 6% 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 Guaraí's 10th-clearest and 11th-windiest month. For the whole year in context, see Guaraí's year-round climate.

Daytime high
30°
12th warmest
Overnight low
22°
4th coldest
Rainfall
277 mm
27.5 wet days
Daylight
12 h 30 min
6:09 AM – 6:37 PM
Cloud cover
81%
10th clearest
Wind
5 km/h
11th windiest
Solar energy
5 kWh/m²
Travel score
2.9
out of 10

Temperature in January

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 30°C through the month.

A typical January day in Guaraí reaches about 30°C in the afternoon and slips back to 22°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 32°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)
13022
23022
33022
43022
53022
63022
73022
83022
93022
103022
113022
123022
133022
143022
153022
163022
173022
183022
193022
203022
213022
223022
233022
243022
253022
263022
273022
283022
293022
303022
313022

How January really feels in Guaraí

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.

Guaraí weather by month

How January compares with the rest of the year at a glance. January is the 12th-warmest and 1st-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan30° / 22°27727.512.52.9
Feb30° / 22°2572512.32.9
Mar30° / 22°25726.812.12.9
Apr31° / 22°1622011.83.4
May32° / 22°598.911.64.2
Jun33° / 22°20.511.54.5
Jul34° / 21°10.211.54.2
Aug35° / 22°20.411.73.2
Sep35° / 23°253.711.92.8
Oct33° / 23°10713.912.23.2
Nov31° / 23°21021.312.43.1
Dec30° / 22°23424.212.53.1

Cloud cover in January

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 6% of the time in January.

Beyond those clear spells, partly cloudy skies cover about 10% of January, with mostly cloudy or overcast conditions the remaining 84%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
11882
21882
31783
41783
51783
61783
71783
81684
91684
101684
111684
121684
131684
141684
151684
161684
171585
181585
191585
201585
211585
221585
231585
241486
251486
261486
271486
281486
291486
301486
311486

Chance of precipitation in January

Any precipitation

Guaraí gets around 277 mm of rain over 27.5 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 88% and peaks near 90% on the wettest days.

0%20%40%60%80%100%151015202531
Rain chance (%)
186
286
386
487
587
687
787
888
988
1088
1188
1288
1388
1488
1588
1688
1789
1889
1989
2089
2189
2290
2390
2490
2590
2690
2790
2890
2990
3090
3190

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 99% of days. Sticky, muggy-or-worse air turns up on roughly 100% of them.

0%25%50%75%100%151015202531
Muggy (%)Oppressive (%)Miserable (%)
12980
22980
31990
41990
51990
61990
71990
81990
91990
101990
111990
121990
131990
141990
151990
161990
171990
181990
191990
201990
211990
221990
231990
241981
251981
261981
271981
281981
291981
301981
311981

Wind in January

Winds average 5 km/h in January.

Across January, daily wind ranges from about 5 km/h on the calmest days to 5 km/h at its breeziest. It stays fairly steady from day to day.

0246810151015202531
Wind speed (km/h)Feels
15calm
25calm
35calm
45calm
55calm
65calm
75calm
85calm
95calm
105calm
115calm
125calm
135calm
145calm
155calm
165calm
175calm
185calm
195calm
205calm
215calm
225calm
235calm
245calm
255calm
265calm
275calm
285calm
295calm
305calm
315calm

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 6:02 AM to 6:16 AM, and sunset from 6:32 PM to 6:39 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
112.56:026:32
212.56:036:33
312.56:036:33
412.56:046:34
512.56:046:34
612.56:056:34
712.56:056:35
812.56:066:35
912.56:066:35
1012.56:076:36
1112.56:076:36
1212.56:086:36
1312.56:086:36
1412.56:086:37
1512.56:096:37
1612.56:096:37
1712.56:106:37
1812.56:106:38
1912.56:116:38
2012.46:116:38
2112.46:126:38
2212.46:126:38
2312.46:136:38
2412.46:136:39
2512.46:136:39
2612.46:146:39
2712.46:146:39
2812.46:156:39
2912.46:156:39
3012.46:156:39
3112.46:166:39

Solar energy in January

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in January, about 5 kWh/m².

For context, solar energy here swings from a low near 4.9 kWh/m² to a high of 6.15 kWh/m² in September across the year — January's 5 kWh/m² falls in the middle.

0246151015202531
Solar energy (kWh/m²)Level
15.1Bright
25.1Bright
35.0Bright
45.0Bright
55.0Bright
65.0Bright
75.0Bright
85.0Bright
95.0Bright
105.0Bright
115.0Bright
125.0Bright
135.0Bright
145.0Bright
155.0Bright
165.0Bright
175.0Bright
185.0Bright
195.0Bright
205.0Bright
215.0Bright
225.0Bright
235.0Bright
245.0Bright
255.0Bright
265.0Bright
275.0Bright
285.0Bright
295.0Bright
305.0Bright
315.0Bright
Planning a trip in January

Hazard calendar for Guaraí

In seasonPeak

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

Guaraí's monsoon runs November–April, 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 Guaraí?

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

2.9
Sightseeing
9th-best month of the year
4.0
Beach & pool
11th-best month of the year

January is a weaker month for outdoor sightseeing in Guaraí.

What to pack for Guaraí in January

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

In January, Guaraí sees daytime highs around 30°C and nights near 22°C. Pack light clothes and rain gear. Worth having: sun protection. About 28 days see rain.

light clothesrain gearsun protection

UV index in Guaraí 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 Guaraí peaks around February 18 at about 15 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near June 22 at about 9 (very high).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeVery highExtremeFeb 18UV 15Jun 22UV 9
UV index (midday)Level
Jan14Extreme
Feb15Extreme
Mar14Extreme
Apr13Extreme
May10Extreme
Jun9Very high
Jul10Very high
Aug10Extreme
Sep12Extreme
Oct10Extreme
Nov12Extreme
Dec11Extreme

Air quality in Guaraí 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 Guaraí is worst in October — around 40 µg/m³ PM2.5 (poor), about 5.3× the cleanest month (June, 8 µg/m³).

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

0204060JanFebMarAprMayJunJulAugSepOctNovDecGoodModeratePoorModerateOct 1238 µg/m³Jun 208 µg/m³
PM2.5 (µg/m³)Level
Jan12Good
Feb11Good
Mar12Good
Apr11Good
May9Good
Jun8Good
Jul8Good
Aug15Moderate
Sep34Moderate
Oct40Poor
Nov16Moderate
Dec14Moderate
Location & terrain

Where is Guaraí?

Guaraí sits at 8.8°S, 48.5°W, 260 m above sea level, in Brazil. The nearest listed city is Miracema do Tocantins, 83 km away.

Topography around Guaraí

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

Within 3 km, the terrain around Guaraí has only modest variations in elevation — a maximum elevation change of 114 m around an average of 272 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 416 m; within 80 km, significant variations in elevation — a maximum elevation change of 552 m.

The land around Guaraí is covered by grassland (47%) and trees (26%) within 3 km, grassland (55%) and trees (37%) within 16 km, and grassland (54%) and trees (37%) within 80 km.

3 km
114 m
16 km
416 m
80 km
552 m
treesshrubsgrasslandcroplandartificial surfaces
January weather nearby: Miracema do Tocantins 83 km · Colinas do Tocantins 86 km · Conceição do Araguaia 105 km · Santa Maria das Barreiras 132 km · Palmas 150 km · Paraíso do Tocantins 154 km · Araguaína 186 km · Redenção 190 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 Guaraí (-8.8342°, -48.5103°, elevation 260 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).