Guaíra weather in January

In January, Guaíra sees average daytime highs of 31°C and overnight lows near 22°C, with 147 mm of rain across 17.6 wet days and about 13.3 hours of daylight. It is the 1st-warmest and 5th-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 29% of the time in January, and the air most often feels oppressive.

Daylight stretches from about 13 h 30 min at the start of January to 13 h 06 min by month's end. Set against the rest of the year, January is Guaíra's 10th-clearest and 10th-windiest month. For the whole year in context, see Guaíra's year-round climate.

Daytime high
31°
1st warmest
Overnight low
22°
12th coldest
Rainfall
147 mm
17.6 wet days
Daylight
13 h 18 min
7:06 AM – 8:26 PM
Cloud cover
61%
10th clearest
Wind
8 km/h
10th windiest
Solar energy
6.16 kWh/m²
Travel score
3.6
out of 10

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 Guaíra reaches about 31°C in the afternoon and slips back to 22°C overnight — a 9°C spread between the day's warmth and the night's chill. On most days the high lands between 28°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)
13122
23122
33122
43122
53122
63122
73122
83122
93122
103122
113122
123122
133122
143122
153122
163122
173122
183122
193122
203122
213122
223122
233122
243122
253122
263122
273122
283122
293122
303122
313122

How January really feels in Guaíra

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.

Guaíra weather by month

How January compares with the rest of the year at a glance. January is the 1st-warmest and 5th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan31° / 22°14717.613.33.6
Feb31° / 22°14915.412.83.8
Mar30° / 21°10712.812.24.5
Apr28° / 19°958.311.56.1
May25° / 16°1268.810.97.1
Jun24° / 15°1078.110.57.4
Jul24° / 14°896.910.77.6
Aug26° / 15°886.511.27.6
Sep28° / 17°1278.811.96.7
Oct29° / 19°16512.812.65.0
Nov30° / 20°14812.513.24.7
Dec31° / 22°16415.713.53.9

Cloud cover in January

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 29% of the time in January.

Beyond those clear spells, partly cloudy skies cover about 18% of January, with mostly cloudy or overcast conditions the remaining 53%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
14654
24654
34654
44654
54654
64654
74753
84852
94852
104852
114753
124753
134654
144654
154555
164654
174654
184555
194555
204555
214654
224753
234753
244753
254753
264753
274852
284951
294852
304951
315050

Chance of precipitation in January

Any precipitation

Guaíra gets around 147 mm of rain over 17.6 wet days in January. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 56% and peaks near 57% on the wettest days.

0%20%40%60%151015202531
Rain chance (%)
157
257
357
457
557
657
757
857
957
1057
1157
1256
1356
1456
1556
1656
1756
1856
1956
2056
2156
2256
2356
2456
2557
2657
2757
2856
2956
3056
3155

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 69% of days. Sticky, muggy-or-worse air turns up on roughly 96% of them.

0%25%50%75%100%151015202531
Comfortable (%)Humid (%)Muggy (%)Oppressive (%)Miserable (%)
11525663
21525664
31424674
41424674
51424674
61424674
71425664
81325674
91325674
101325674
111325674
121324684
131324684
141324684
151324684
161324693
171324693
180324703
190324703
200324703
210424702
220424702
230423712
240423712
250423712
260423712
270423712
280423712
290423712
300524692
310524692

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 30 min at the start of January to 13 h 06 min by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 24 minutes over January. Sunrise moves from 6:56 AM to 7:17 AM, and sunset from 8:24 PM to 8:24 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
113.56:568:24
213.56:578:24
313.56:578:25
413.46:588:25
513.46:598:25
613.46:598:25
713.47:008:26
813.47:018:26
913.47:018:26
1013.47:028:26
1113.47:038:26
1213.47:038:26
1313.47:048:26
1413.47:058:26
1513.37:058:26
1613.37:068:26
1713.37:078:26
1813.37:088:26
1913.37:088:26
2013.37:098:26
2113.37:108:26
2213.37:108:26
2313.27:118:26
2413.27:128:26
2513.27:138:26
2613.27:138:25
2713.27:148:25
2813.27:158:25
2913.27:158:25
3013.17:168:24
3113.17:178:24

Solar energy in January

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in January, about 6.16 kWh/m².

For context, solar energy here swings from a low near 3.07 kWh/m² to a high of 6.31 kWh/m² in December across the year — January's 6.16 kWh/m² sits near the top of that range.

0246151015202531
Solar energy (kWh/m²)Level
16.3Intense
26.3Intense
36.3Intense
46.3Intense
56.3Intense
66.2Intense
76.2Intense
86.2Intense
96.2Intense
106.2Intense
116.2Intense
126.2Intense
136.2Intense
146.2Intense
156.2Intense
166.2Intense
176.2Intense
186.2Intense
196.2Intense
206.2Intense
216.2Intense
226.2Intense
236.1Intense
246.1Intense
256.1Intense
266.1Intense
276.1Intense
286.1Intense
296.1Intense
306.1Intense
316.0Intense
Planning a trip in January

Is January a good time to visit Guaíra?

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

3.6
Sightseeing
12th-best month of the year
5.5
Beach & pool
12th-best month of the year

January is a weaker month for outdoor sightseeing in Guaíra.

What to pack for Guaíra in January

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

In January, Guaíra sees daytime highs around 31°C and nights near 22°C. Pack light clothes, rain gear and sun protection. About 18 days see rain.

light clothesrain gearsun protection

UV index in Guaíra 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 Guaíra peaks around January 19 at about 15 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near July 10 at about 5 (high).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeVery highHighExtremeJan 19UV 15Jul 10UV 5
UV index (midday)Level
Jan15Extreme
Feb14Extreme
Mar12Extreme
Apr9Very high
May6High
Jun5High
Jul5High
Aug7Very high
Sep6High
Oct10Extreme
Nov12Extreme
Dec14Extreme

Air quality in Guaíra 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 Guaíra is worst in September — around 26 µg/m³ PM2.5 (moderate), about 4.7× the cleanest month (March, 6 µg/m³).

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

0102030JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateGoodSep 1525 µg/m³Mar 166 µg/m³
PM2.5 (µg/m³)Level
Jan8Good
Feb7Good
Mar6Good
Apr7Good
May8Good
Jun8Good
Jul7Good
Aug17Moderate
Sep26Moderate
Oct13Moderate
Nov9Good
Dec7Good
Location & terrain

Where is Guaíra?

Guaíra sits at 24.1°S, 54.2°W, 256 m above sea level, in Brazil. The nearest listed city is Terra Roxa, 17 km away.

Topography around Guaíra

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

Within 3 km, the terrain around Guaíra has only modest variations in elevation — a maximum elevation change of 71 m around an average of 239 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 152 m; within 80 km, significant variations in elevation — a maximum elevation change of 334 m.

The land around Guaíra is covered by water (26%), grassland (22%) and trees (21%) within 3 km, cropland (46%), grassland (22%) and trees (20%) within 16 km, and cropland (58%) within 80 km.

3 km
71 m
16 km
152 m
80 km
334 m
treesgrasslandcroplandartificial surfaceswater
January weather nearby: Terra Roxa 17 km · Altônia 42 km · Palotina 47 km · Iporã 56 km · Marechal Cândido Rondon 56 km · Itaquiraí 68 km · Assis Chateaubriand 83 km · Toledo 87 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 Guaíra (-24.082°, -54.2462°, elevation 256 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).