Tristán Suárez weather in January

In January, Tristán Suárez sees average daytime highs of 29°C and overnight lows near 18°C, with 89 mm of rain across 7.9 wet days and about 14.1 hours of daylight. It is the 1st-warmest and 5th-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 50% of the time in January, and the air most often feels muggy.

Daylight stretches from about 14 h 18 min at the start of January to 13 h 48 min by month's end. Set against the rest of the year, January is Tristán Suárez's 1st-clearest and 7th-windiest month. For the whole year in context, see Tristán Suárez's year-round climate.

Daytime high
29°
1st warmest
Overnight low
18°
12th coldest
Rainfall
89 mm
7.9 wet days
Daylight
14 h 06 min
6:00 AM – 8:07 PM
Cloud cover
43%
1st clearest
Wind
13 km/h
7th windiest
Solar energy
7.28 kWh/m²
Travel score
6.0
out of 10

Tristán Suárez is human settlement in Argentina.

Founded
1885

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 Tristán Suárez reaches about 29°C in the afternoon and slips back to 18°C overnight — a 11°C spread between the day's warmth and the night's chill. On most days the high lands between 24°C and 33°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)
12918
22918
32918
42918
52918
62918
72918
82918
92918
102918
112918
122918
132918
142918
152918
162918
172918
182918
192918
202918
212918
222918
232918
242918
252918
262918
272918
282918
292918
302918
312918

Tristán Suárez 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
Jan29° / 18°897.914.16.0
Feb28° / 17°898.613.36.6
Mar26° / 16°817.212.37.4
Apr22° / 12°908.211.17.1
May18° / 596.110.26.4
Jun15° / 605.69.75.1
Jul14° / 596.19.94.6
Aug16° / 64610.75.8
Sep18° / 72711.86.4
Oct21° / 11°1069.412.96.7
Nov24° / 14°948.413.87.2
Dec28° / 16°868.614.36.7

Cloud cover in January

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 50% of the time in January, the clearest month of the year.

Beyond those clear spells, partly cloudy skies cover about 16% of January, with mostly cloudy or overcast conditions the remaining 34%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
16535
26535
36535
46535
56535
66535
76634
86634
96634
106634
116733
126733
136733
146733
156733
166733
176733
186733
196733
206733
216832
226733
236733
246733
256733
266733
276634
286733
296634
306535
316535

Chance of precipitation in January

Any precipitation

Tristán Suárez gets around 89 mm of rain over 7.9 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 26% and peaks near 31% on the wettest days.

0%10%20%30%40%151015202531
Rain chance (%)
129
229
329
428
528
627
727
826
926
1025
1125
1224
1324
1423
1523
1623
1723
1823
1923
2023
2124
2224
2325
2425
2526
2627
2728
2829
2930
3031
3131

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 29% of days. Sticky, muggy-or-worse air turns up on roughly 34% of them.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)
1172030295
2162030295
3162029295
4162029295
5162129295
6162128295
7162128295
8172228295
9172228285
10172328285
11172328284
12172427284
13172427284
14172427284
15172428284
16172328284
17172328284
18172228284
19172228284
20172128294
21172029295
22172029295
23171929305
24171929305
25171828316
26171728326
27171728326
28171628327
29171628327
30171627327
31171627328

Wind in January

Winds average 13 km/h in January.

Across January, daily wind ranges from about 13 km/h on the calmest days to 13 km/h at its breeziest. It stays fairly steady from day to day.

051015151015202531
Wind speed (km/h)Feels
113light breeze
213light breeze
313light breeze
413light breeze
513light breeze
613light breeze
713light breeze
813light breeze
913light breeze
1013light breeze
1113light breeze
1213light breeze
1313light breeze
1413light breeze
1513light breeze
1613light breeze
1713light breeze
1813light breeze
1913light breeze
2013light breeze
2113light breeze
2213light breeze
2313light breeze
2413light breeze
2513light breeze
2613light breeze
2713light breeze
2813light breeze
2913light breeze
3013light breeze
3113light breeze

Sunrise & sunset in January

DaylightNight

Daylight runs from about 14 h 18 min at the start of January to 13 h 48 min by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 30 minutes over January. Sunrise moves from 5:48 AM to 6:15 AM, and sunset from 8:07 PM to 8:00 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
114.35:488:07
214.35:498:07
314.35:508:07
414.35:508:07
514.35:518:07
614.35:528:07
714.25:538:07
814.25:548:07
914.25:548:07
1014.25:558:07
1114.25:568:07
1214.25:578:07
1314.25:588:07
1414.15:598:07
1514.16:008:07
1614.16:008:07
1714.16:018:06
1814.16:028:06
1914.06:038:06
2014.06:048:06
2114.06:058:05
2214.06:068:05
2314.06:078:04
2413.96:088:04
2513.96:098:04
2613.96:108:03
2713.96:118:03
2813.86:128:02
2913.86:138:02
3013.86:148:01
3113.86:158:00

Solar energy in January

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in January, about 7.28 kWh/m².

For context, solar energy here swings from a low near 2.23 kWh/m² to a high of 7.48 kWh/m² in December across the year — January's 7.28 kWh/m² sits near the top of that range.

02468151015202531
Solar energy (kWh/m²)Level
17.4Intense
27.4Intense
37.4Intense
47.4Intense
57.4Intense
67.4Intense
77.4Intense
87.4Intense
97.4Intense
107.4Intense
117.4Intense
127.4Intense
137.4Intense
147.4Intense
157.4Intense
167.4Intense
177.3Intense
187.3Intense
197.3Intense
207.3Intense
217.2Intense
227.2Intense
237.2Intense
247.1Intense
257.1Intense
267.0Intense
277.0Intense
287.0Intense
296.9Intense
306.9Intense
316.8Intense
Planning a trip in January

Is January a good time to visit Tristán Suárez?

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

6.0
Sightseeing
9th-best month of the year
7.6
Beach & pool
1st-best month of the year

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

What to pack for Tristán Suárez in January

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

In January, Tristán Suárez sees daytime highs around 29°C and nights near 18°C. Pack light clothes and sun protection. About 8 days see rain.

light clothessun protection

Sea temperature near Tristán Suárez in January

The nearest coast averages about 25°C in January — the other half of the beach question. The full-year curve and swim-comfort zones are below.

The sea at the nearest coast (about 34 km away) is warmest in January at about 25°C and coldest in July near 13°C.

It's comfortable for a long swim from Nov 9 to Apr 20 — about 5.4 months when the water holds above 20°C.

10°15°20°25°JanFebMarAprMayJunJulAugSepOctNovDecbracingcoolrefreshingwarmcomfortable to swimcomfortable to swim
Sea temperature (°C)Comfort
Jan25Warm
Feb25Warm
Mar23Refreshing
Apr21Refreshing
May17Cool
Jun14Bracing
Jul13Bracing
Aug13Bracing
Sep15Cool
Oct18Cool
Nov21Refreshing
Dec23Refreshing

UV index in Tristán Suárez 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 Tristán Suárez peaks around January 14 at about 12 (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 10 months of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeVery highModerateHighVery highExtremeJan 14UV 12Jun 19UV 3
UV index (midday)Level
Jan13Extreme
Feb11Extreme
Mar10Very high
Apr6High
May3Moderate
Jun3Moderate
Jul3Moderate
Aug4Moderate
Sep6High
Oct8Very high
Nov11Extreme
Dec12Extreme

Air quality in Tristán Suárez 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 Tristán Suárez is worst in August — around 17 µg/m³ PM2.5 (moderate), about 1.8× the cleanest month (December, 9 µg/m³).

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

01020JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateGoodAug 1316 µg/m³Dec 129 µg/m³
PM2.5 (µg/m³)Level
Jan10Good
Feb10Good
Mar11Good
Apr12Good
May14Moderate
Jun15Moderate
Jul16Moderate
Aug17Moderate
Sep14Moderate
Oct11Good
Nov10Good
Dec9Good
Location & terrain

Where is Tristán Suárez?

Tristán Suárez sits at 34.9°S, 58.6°W, 12 m above sea level, in Argentina. The nearest listed city is La Unión, 3.0 km away.

Topography around Tristán Suárez

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

Within 3 km, the terrain around Tristán Suárez has only modest variations in elevation — a maximum elevation change of 23 m around an average of 20 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 53 m; within 80 km, only modest variations in elevation — a maximum elevation change of 70 m.

The land around Tristán Suárez is covered by artificial surfaces (37%), grassland (36%) and trees (22%) within 3 km, grassland (45%) and artificial surfaces (20%) within 16 km, and grassland (35%) and cropland (29%) within 80 km.

3 km
23 m
16 km
53 m
80 km
70 m
treesgrasslandcroplandartificial surfacesbare terrainwaterwetland
January weather nearby: La Unión 3.0 km · Ezeiza 6.0 km · Burzaco 17 km · Adrogué 19 km · Pontevedra 20 km · San Vicente 20 km · Lomas de Zamora 21 km · Isidro Casanova 21 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 Tristán Suárez (-34.8898°, -58.5676°, elevation 12 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. Sea temperatures are the NOAA OISST v2.1 1991–2020 monthly climatology (public domain), sampled at the nearest ocean point. 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).