Gualeguay weather in January

In January, Gualeguay sees average daytime highs of 30°C and overnight lows near 19°C, with 107 mm of rain across 7.4 wet days and about 13.9 hours of daylight. It is the 1st-warmest and 7th-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 51% of the time in January, and the air most often feels muggy.

Daylight stretches from about 14 h 12 min at the start of January to 13 h 36 min by month's end. Set against the rest of the year, January is Gualeguay's 1st-clearest and 8th-windiest month. For the whole year in context, see Gualeguay's year-round climate.

Daytime high
30°
1st warmest
Overnight low
19°
12th coldest
Rainfall
107 mm
7.4 wet days
Daylight
14 hours
6:08 AM – 8:06 PM
Cloud cover
43%
1st clearest
Wind
11 km/h
8th windiest
Solar energy
7.19 kWh/m²
Travel score
5.3
out of 10

Gualeguay is city in Entre Ríos Province, Argentina.

Founded
1783

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 30°C through the month.

A typical January day in Gualeguay reaches about 30°C in the afternoon and slips back to 19°C overnight — a 11°C spread between the day's warmth and the night's chill. On most days the high lands between 26°C and 35°C. Set against its neighbours, January runs about 1°C warmer than December and about 1°C warmer than February.

10°15°20°25°30°35°151015202531
Avg high (°C)Avg low (°C)
13019
23019
33019
43019
53019
63019
73019
83019
93019
103019
113019
123019
133019
143019
153019
163019
173019
183019
193019
203019
213019
223019
233019
243019
253019
263019
273019
283019
293019
303019
313019

Gualeguay weather by month

How January compares with the rest of the year at a glance. January is the 1st-warmest and 7th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan30° / 19°1077.413.95.3
Feb29° / 18°1108.113.25.8
Mar27° / 17°1227.812.37.0
Apr23° / 13°1118.211.27.3
May20° / 10°756.110.36.8
Jun17° / 576.49.95.8
Jul16° / 535.4105.7
Aug18° / 715.910.86.7
Sep21° / 10°786.811.87.0
Oct23° / 13°1199.812.87.1
Nov26° / 15°1097.413.77.1
Dec29° / 17°1209.114.15.8

Cloud cover in January

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 51% of the time in January, the clearest month of the year.

Beyond those clear spells, partly cloudy skies cover about 15% of January, with mostly cloudy or overcast conditions the remaining 35%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
16238
26337
36436
46436
56535
66535
76535
86634
96634
106733
116634
126733
136733
146733
156733
166733
176733
186733
196733
206733
216733
226733
236733
246634
256535
266535
276436
286337
296238
306337
316238

Chance of precipitation in January

Any precipitation

Gualeguay gets around 107 mm of rain over 7.4 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 24% and peaks near 28% on the wettest days.

0%10%20%30%40%151015202531
Rain chance (%)
127
227
327
426
526
625
725
824
924
1024
1123
1223
1322
1422
1522
1621
1721
1821
1921
2022
2122
2222
2323
2423
2524
2625
2726
2826
2927
3028
3128

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 31% of days. Sticky, muggy-or-worse air turns up on roughly 43% of them.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)Miserable (%)
113202530121
213192531120
313192531120
413192531120
513192531120
613192531120
713182531120
813182631120
913182631120
1013192631110
1113192730110
1212192730110
1312202730110
1412202830100
1512202830100
1612202830100
1712202830100
1811202830100
1911202831100
2011202831100
2111202831100
2211202731100
2311192732101
2411192632101
2511192633111
2611182533111
2711182534121
2811182434121
2911182434121
3011182334131
3111182333131

Wind in January

Winds average 11 km/h in January.

Across January, daily wind ranges from about 11 km/h on the calmest days to 11 km/h at its breeziest. It stays fairly steady from day to day.

051015151015202531
Wind speed (km/h)Feels
111calm
211calm
311calm
411calm
511calm
611calm
711calm
811calm
911calm
1011calm
1111calm
1211calm
1311calm
1411calm
1511calm
1611calm
1711calm
1811calm
1911calm
2011calm
2111calm
2211calm
2311calm
2411calm
2511calm
2611calm
2711calm
2811calm
2911calm
3011calm
3111calm

Sunrise & sunset in January

DaylightNight

Daylight runs from about 14 h 12 min at the start of January to 13 h 36 min by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 36 minutes over January. Sunrise moves from 5:56 AM to 6:21 AM, and sunset from 8:05 PM to 8:00 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
114.25:568:05
214.15:568:05
314.15:578:05
414.15:588:06
514.15:598:06
614.15:598:06
714.16:008:06
814.16:018:06
914.16:028:06
1014.16:028:06
1114.06:038:06
1214.06:048:06
1314.06:058:06
1414.06:068:06
1514.06:078:06
1614.06:088:06
1713.96:088:05
1813.96:098:05
1913.96:108:05
2013.96:118:05
2113.96:128:04
2213.96:138:04
2313.86:148:04
2413.86:158:03
2513.86:168:03
2613.86:178:02
2713.76:188:02
2813.76:188:01
2913.76:198:01
3013.76:208:00
3113.66:218:00

Solar energy in January

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in January, about 7.19 kWh/m².

For context, solar energy here swings from a low near 2.34 kWh/m² to a high of 7.33 kWh/m² in December across the year — January's 7.19 kWh/m² sits near the top of that range.

02468151015202531
Solar energy (kWh/m²)Level
17.2Intense
27.2Intense
37.2Intense
47.3Intense
57.3Intense
67.3Intense
77.3Intense
87.3Intense
97.3Intense
107.3Intense
117.3Intense
127.3Intense
137.3Intense
147.3Intense
157.3Intense
167.3Intense
177.3Intense
187.2Intense
197.2Intense
207.2Intense
217.2Intense
227.1Intense
237.1Intense
247.1Intense
257.0Intense
267.0Intense
276.9Intense
286.9Intense
296.8Intense
306.8Intense
316.7Intense
Planning a trip in January

Is January a good time to visit Gualeguay?

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

5.3
Sightseeing
12th-best month of the year
7.4
Beach & pool
1st-best month of the year

January is a reasonable time to visit Gualeguay for sightseeing. The water and warmth also suit a beach or pool day.

What to pack for Gualeguay in January

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

In January, Gualeguay sees daytime highs around 30°C and nights near 19°C. Pack light clothes and sun protection. About 7 days see rain.

light clothessun protection

UV index in Gualeguay in January

LowModerateHighVery highExtreme

Clear-sky midday UV in January peaks around 13 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Gualeguay peaks around January 15 at about 13 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near June 19 at about 3 (moderate).

The index reaches 3 or more — the level where the WHO recommends sun protection — in 11 months of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeVery highModerateHighVery highExtremeJan 15UV 13Jun 19UV 3
UV index (midday)Level
Jan13Extreme
Feb11Extreme
Mar10Extreme
Apr6High
May4Moderate
Jun3Moderate
Jul3Moderate
Aug4Moderate
Sep6High
Oct8Very high
Nov11Extreme
Dec12Extreme

Air quality in Gualeguay 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 Gualeguay is worst in August — around 19 µg/m³ PM2.5 (moderate), about 3.7× the cleanest month (April, 5 µg/m³).

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

0102030JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateGoodAug 1718 µg/m³Apr 145 µg/m³
PM2.5 (µg/m³)Level
Jan8Good
Feb6Good
Mar6Good
Apr5Good
May7Good
Jun7Good
Jul12Good
Aug19Moderate
Sep12Good
Oct10Good
Nov6Good
Dec6Good
Location & terrain

Where is Gualeguay?

Gualeguay sits at 33.1°S, 59.3°W, 13 m above sea level, in Argentina. The nearest listed city is San Pedro, 68 km away.

Topography around Gualeguay

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

Within 3 km, the terrain around Gualeguay has only modest variations in elevation — a maximum elevation change of 24 m around an average of 10 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 59 m; within 80 km, only modest variations in elevation — a maximum elevation change of 95 m.

The land around Gualeguay is covered by grassland (60%) and artificial surfaces (23%) within 3 km, grassland (60%) and cropland (29%) within 16 km, and wetland (33%), cropland (32%) and grassland (29%) within 80 km.

3 km
24 m
16 km
59 m
80 km
95 m
treesgrasslandcroplandartificial surfaceswaterwetland
January weather nearby: San Pedro 68 km · Ramallo 75 km · Gualeguaychú 75 km · Baradero 77 km · San Nicolás de los Arroyos 86 km · Fray Bentos 93 km · Nogoyá 94 km · Villa Constitución 95 km

Argentina travel facts

Travel advisory
Level 1
Exercise Normal Precautions
Power plugs
Type C / I
220 V · 50 Hz
Prices
≈ 46% of US
price level, 2025
GDP per capita
$14,898
2025
Happiness
6.4 / 10
World Happiness, 2025
Homicide rate
4.5
per 100k, 2023
Road deaths
14.1
per 100k/yr, 2019
Income group
Upper middle
World Bank
English
High
EF EPI 575
Religion
Roman Catholic 63%none 19%Evangelical 15%Jehovah's Witness and Church of Jesus Christ 1%

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 Gualeguay (-33.1409°, -59.3126°, elevation 13 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).