Goiás weather in January

In January, Goiás sees average daytime highs of 29°C and overnight lows near 21°C, with 278 mm of rain across 25.1 wet days and about 12.8 hours of daylight. It is the 11th-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 8% of the time in January, and the air most often feels oppressive.

Daylight stretches from about 12 h 54 min at the start of January to 12 h 42 min by month's end. Set against the rest of the year, January is Goiás's 11th-clearest and 8th-windiest month. For the whole year in context, see Goiás's year-round climate.

Daytime high
29°
11th warmest
Overnight low
21°
8th coldest
Rainfall
278 mm
25.1 wet days
Daylight
12 h 54 min
7:04 AM – 7:55 PM
Cloud cover
81%
11th clearest
Wind
6 km/h
8th windiest
Solar energy
5.21 kWh/m²
Travel score
3.4
out of 10

Goiás 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 Goiás reaches about 29°C in the afternoon and slips back to 21°C overnight — a 8°C spread between the day's warmth and the night's chill. On most days the high lands between 26°C and 33°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)
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

How January really feels in Goiás

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

January sits comfortably in between — no days that feel dangerously hot or drop to a hard freeze once humidity and wind are folded in.

Goiás weather by month

How January compares with the rest of the year at a glance. January is the 11th-warmest and 1st-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan29° / 21°27825.112.83.4
Feb30° / 21°2172312.53.3
Mar30° / 21°21624.312.13.4
Apr31° / 21°9513.711.74.3
May31° / 20°132.511.35.6
Jun31° / 19°30.711.16.1
Jul31° / 19°10.211.15.9
Aug33° / 20°50.911.54.5
Sep34° / 22°275.411.93.3
Oct33° / 22°11616.612.43.0
Nov30° / 22°20423.412.73.2
Dec29° / 21°27425.612.93.3

Cloud cover in January

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 8% of the time in January.

Beyond those clear spells, partly cloudy skies cover about 11% of January, with mostly cloudy or overcast conditions the remaining 81%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
11783
21783
31783
41684
51783
61783
71882
81882
91882
101882
111882
121981
131981
142080
152080
162080
172080
181981
191981
201981
211981
222080
232080
242080
252080
262080
272080
282080
292080
302080
312080

Chance of precipitation in January

Any precipitation

Goiás gets around 278 mm of rain over 25.1 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 81% and peaks near 83% on the wettest days.

0%20%40%60%80%151015202531
Rain chance (%)
180
280
380
481
581
681
782
882
982
1083
1183
1283
1383
1482
1582
1682
1782
1881
1981
2081
2181
2281
2381
2481
2580
2681
2781
2881
2981
3081
3181

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 52% of days. Sticky, muggy-or-worse air turns up on roughly 96% of them.

0%25%50%75%100%151015202531
Humid (%)Muggy (%)Oppressive (%)
124949
224849
334850
434750
534750
634750
734651
834651
934651
1034552
1144551
1244551
1344551
1444551
1544452
1644452
1744452
1844353
1944254
2044254
2144155
2244155
2344056
2444056
2544056
2644056
2744155
2844155
2944155
3044155
3144155

Wind in January

Winds average 6 km/h in January.

Across January, daily wind ranges from about 6 km/h on the calmest days to 6 km/h at its breeziest. It stays fairly steady from day to day.

0246810151015202531
Wind speed (km/h)Feels
16calm
26calm
36calm
46calm
56calm
66calm
76calm
86calm
96calm
106calm
116calm
126calm
136calm
146calm
156calm
166calm
176calm
186calm
196calm
206calm
216calm
226calm
236calm
246calm
256calm
266calm
276calm
286calm
296calm
306calm
316calm

Sunrise & sunset in January

DaylightNight

Daylight runs from about 12 h 54 min at the start of January to 12 h 42 min by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 12 minutes over January. Sunrise moves from 6:56 AM to 7:12 AM, and sunset from 7:52 PM to 7:55 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
112.96:567:52
212.96:567:52
312.96:577:52
412.96:577:53
512.96:587:53
612.96:597:53
712.96:597:54
812.97:007:54
912.97:007:54
1012.97:017:54
1112.97:017:55
1212.97:027:55
1312.97:037:55
1412.97:037:55
1512.97:047:55
1612.97:047:55
1712.87:057:56
1812.87:057:56
1912.87:067:56
2012.87:077:56
2112.87:077:56
2212.87:087:56
2312.87:087:56
2412.87:097:56
2512.87:097:56
2612.87:107:56
2712.87:107:56
2812.77:117:56
2912.77:117:56
3012.77:127:55
3112.77:127:55

Solar energy in January

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in January, about 5.21 kWh/m².

For context, solar energy here swings from a low near 4.56 kWh/m² to a high of 6.09 kWh/m² in October across the year — January's 5.21 kWh/m² falls in the middle.

0246151015202531
Solar energy (kWh/m²)Level
15.3Bright
25.2Bright
35.2Bright
45.2Bright
55.2Bright
65.2Bright
75.2Bright
85.2Bright
95.2Bright
105.2Bright
115.2Bright
125.2Bright
135.2Bright
145.2Bright
155.2Bright
165.2Bright
175.2Bright
185.2Bright
195.3Bright
205.3Bright
215.3Bright
225.3Bright
235.3Bright
245.3Bright
255.3Bright
265.3Bright
275.3Bright
285.3Bright
295.3Bright
305.4Bright
315.4Bright
Planning a trip in January

Hazard calendar for Goiás

In seasonPeak

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

Goiás'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 Goiás?

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

3.4
Sightseeing
6th-best month of the year
4.4
Beach & pool
10th-best month of the year

January is a weaker month for outdoor sightseeing in Goiás.

What to pack for Goiás in January

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

In January, Goiás sees daytime highs around 29°C and nights near 21°C. Pack light clothes and rain gear. Worth having: sun protection. About 25 days see rain.

light clothesrain gearsun protection

UV index in Goiás 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 Goiás peaks around January 23 at about 15 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near June 22 at about 8 (very high).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeVery highExtremeJan 23UV 15Jun 22UV 8
UV index (midday)Level
Jan15Extreme
Feb15Extreme
Mar14Extreme
Apr12Extreme
May9Very high
Jun8Very high
Jul8Very high
Aug10Very high
Sep12Extreme
Oct13Extreme
Nov13Extreme
Dec14Extreme

Air quality in Goiás 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 Goiás is worst in September — around 22 µg/m³ PM2.5 (moderate), about 4.9× the cleanest month (July, 4 µg/m³).

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

0102030JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateGoodSep 1820 µg/m³Jul 115 µg/m³
PM2.5 (µg/m³)Level
Jan8Good
Feb8Good
Mar8Good
Apr7Good
May6Good
Jun5Good
Jul4Good
Aug8Good
Sep22Moderate
Oct14Moderate
Nov7Good
Dec7Good
Location & terrain

Where is Goiás?

Goiás sits at 15.9°S, 50.1°W, 496 m above sea level, in Brazil. The nearest listed city is Itaberaí, 37 km away.

Topography around Goiás

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

Within 3 km, the terrain around Goiás has significant variations in elevation — a maximum elevation change of 402 m around an average of 556 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 676 m; within 80 km, large variations in elevation — a maximum elevation change of 858 m.

The land around Goiás is covered by trees (69%) within 3 km, trees (48%) and grassland (41%) within 16 km, and grassland (50%), trees (25%) and cropland (23%) within 80 km.

3 km
402 m
16 km
676 m
80 km
858 m
treesshrubsgrasslandcroplandartificial surfaces
January weather nearby: Itaberaí 37 km · Itapuranga 46 km · Anicuns 62 km · São Luís de Montes Belos 70 km · Jussara 78 km · Inhumas 83 km · Jaraguá 88 km · Ceres 91 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 Goiás (-15.9344°, -50.1403°, 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).