Mar del Tuyú weather in January

In January, Mar del Tuyú sees average daytime highs of 23°C and overnight lows near 19°C, with 75 mm of rain across 7.7 wet days and about 14.2 hours of daylight. It is the 1st-warmest and 7th-wettest month of the year here.

Day-to-day highs hold fairly steady near 23°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 30 min at the start of January to 13 h 54 min by month's end. Set against the rest of the year, January is Mar del Tuyú's 1st-clearest and 3rd-windiest month. For the whole year in context, see Mar del Tuyú's year-round climate.

Daytime high
23°
1st warmest
Overnight low
19°
11th coldest
Rainfall
75 mm
7.7 wet days
Daylight
14 h 12 min
5:49 AM – 8:03 PM
Cloud cover
44%
1st clearest
Wind
22 km/h
3rd windiest
Solar energy
7.41 kWh/m²
Travel score
7.5
out of 10

Mar del Tuyú is human settlement in Argentina.

Founded
1945

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 23°C through the month.

A typical January day in Mar del Tuyú reaches about 23°C in the afternoon and slips back to 19°C overnight — a 4°C spread between the day's warmth and the night's chill. On most days the high lands between 20°C and 26°C. Set against its neighbours, January runs about 2°C warmer than December and on par with February.

15°20°25°30°151015202531
Avg high (°C)Avg low (°C)
12319
22319
32319
42319
52319
62319
72319
82319
92319
102319
112319
122319
132319
142319
152319
162319
172319
182319
192320
202320
212320
222320
232320
242320
252320
262320
272320
282320
292320
302320
312320

Mar del Tuyú 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
Jan23° / 19°757.714.27.5
Feb23° / 20°847.613.47.4
Mar22° / 18°778.212.37.1
Apr19° / 15°937.511.16.5
May16° / 12°607.110.15.2
Jun13° / 717.29.63.8
Jul11° / 687.19.83.1
Aug12° / 77710.63.6
Sep14° / 10°747.411.84.2
Oct16° / 13°859.312.95.3
Nov19° / 15°818.513.96.5
Dec22° / 18°657.914.57.2

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 33%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
16535
26535
36535
46535
56634
66733
76733
86733
96832
106832
116832
126931
136931
146931
156931
166931
176931
186931
196931
206832
216733
226733
236733
246634
256535
266535
276436
286337
296337
306238
316238

Chance of precipitation in January

Any precipitation

Mar del Tuyú gets around 75 mm of rain over 7.7 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 25% and peaks near 28% on the wettest days.

0%10%20%30%40%151015202531
Rain chance (%)
127
227
327
427
527
626
726
826
925
1025
1124
1224
1324
1423
1523
1623
1723
1823
1923
2023
2123
2223
2323
2424
2524
2625
2726
2826
2927
3027
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 35% of days. Sticky, muggy-or-worse air turns up on roughly 40% of them.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)
1161830333
2151829343
3151929334
4151929334
5151928334
6162028334
7162028324
8162027324
9162027324
10162027324
11162126324
12162126334
13162126334
14162126334
15162125344
16162025344
17162025354
18162025354
19161924365
20161924365
21161924375
22161823375
23151823376
24151823386
25151723387
26151723387
27151723388
28151723388
29151722379
30151722379
311517223610

Wind in January

Winds average 22 km/h in January.

Across January, daily wind ranges from about 21 km/h on the calmest days to 22 km/h at its breeziest. It stays fairly steady from day to day.

0510152025151015202531
Wind speed (km/h)Feels
121breezy
221breezy
321breezy
421breezy
521breezy
621breezy
721breezy
821breezy
921breezy
1021breezy
1121breezy
1221breezy
1321breezy
1421breezy
1521breezy
1621breezy
1721breezy
1821breezy
1921breezy
2021breezy
2122breezy
2222breezy
2322breezy
2422breezy
2522breezy
2622breezy
2722breezy
2822breezy
2922breezy
3022breezy
3122breezy

Sunrise & sunset in January

DaylightNight

Daylight runs from about 14 h 30 min at the start of January to 13 h 54 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 5:36 AM to 6:04 AM, and sunset from 8:04 PM to 7:56 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
114.55:368:04
214.55:378:04
314.45:388:04
414.45:388:04
514.45:398:04
614.45:408:04
714.45:418:04
814.45:428:04
914.45:428:04
1014.35:438:04
1114.35:448:04
1214.35:458:04
1314.35:468:04
1414.35:478:04
1514.35:488:04
1614.25:498:03
1714.25:508:03
1814.25:518:03
1914.25:528:02
2014.25:538:02
2114.15:548:02
2214.15:558:01
2314.15:568:01
2414.15:578:00
2514.05:588:00
2614.05:597:59
2714.06:007:59
2814.06:017:58
2913.96:027:58
3013.96:037:57
3113.96:047:56

Solar energy in January

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in January, about 7.41 kWh/m².

For context, solar energy here swings from a low near 2.12 kWh/m² to a high of 7.67 kWh/m² in December across the year — January's 7.41 kWh/m² sits near the top of that range.

02468151015202531
Solar energy (kWh/m²)Level
17.6Intense
27.6Intense
37.6Intense
47.6Intense
57.6Intense
67.6Intense
77.6Intense
87.6Intense
97.6Intense
107.6Intense
117.5Intense
127.5Intense
137.5Intense
147.5Intense
157.5Intense
167.5Intense
177.5Intense
187.5Intense
197.4Intense
207.4Intense
217.4Intense
227.3Intense
237.3Intense
247.2Intense
257.2Intense
267.2Intense
277.1Intense
287.1Intense
297.0Intense
307.0Intense
316.9Intense
Planning a trip in January

Is January a good time to visit Mar del Tuyú?

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

7.5
Sightseeing
1st-best month of the year
5.9
Beach & pool
1st-best month of the year

January is one of the better times to visit Mar del Tuyú for general sightseeing.

What to pack for Mar del Tuyú in January

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

In January, Mar del Tuyú sees daytime highs around 23°C and nights near 19°C. Pack sun protection. Worth having: light clothes and a windbreaker. About 8 days see rain.

sun protectionlight clothesa windbreaker

Sea temperature near Mar del Tuyú in January

The nearest coast averages about 22°C in January — the other half of the beach question. The full-year curve and swim-comfort zones are below.

The sea offshore is warmest in February at about 22°C and coldest in July near 11°C.

It's comfortable for a long swim from Dec 18 to Mar 31 — about 3.4 months when the water holds above 20°C.

10°15°20°25°JanFebMarAprMayJunJulAugSepOctNovDecbracingcoolrefreshingwarmcomfortable to swim
Sea temperature (°C)Comfort
Jan22Refreshing
Feb22Refreshing
Mar21Refreshing
Apr19Cool
May16Cool
Jun13Bracing
Jul11Bracing
Aug11Bracing
Sep12Bracing
Oct15Bracing
Nov17Cool
Dec20Cool

UV index in Mar del Tuyú in January

LowModerateHighVery highExtreme

Clear-sky midday UV in January peaks around 12 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Mar del Tuyú peaks around January 16 at about 12 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near June 19 at about 2 (moderate).

The index reaches 3 or more — the level where the WHO recommends sun protection — in 10 months of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeVery highModerateHighVery highExtremeJan 16UV 12Jun 19UV 2
UV index (midday)Level
Jan12Extreme
Feb12Extreme
Mar9Very high
Apr5High
May3Moderate
Jun2Moderate
Jul3Moderate
Aug3Moderate
Sep5High
Oct7Very high
Nov11Extreme
Dec12Extreme
Location & terrain

Where is Mar del Tuyú?

Mar del Tuyú sits at 36.6°S, 56.7°W, 13 m above sea level, in Argentina. The nearest listed city is Santa Teresita, 4.0 km away.

Topography around Mar del Tuyú

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

Within 3 km, the terrain around Mar del Tuyú has only modest variations in elevation — a maximum elevation change of 18 m around an average of 3 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 34 m; within 80 km, only modest variations in elevation — a maximum elevation change of 33 m.

The land around Mar del Tuyú is covered by water (38%), grassland (25%) and artificial surfaces (21%) within 3 km, water (47%) and grassland (36%) within 16 km, and water (44%) and grassland (39%) within 80 km.

3 km
18 m
16 km
34 m
80 km
33 m
treesgrasslandcroplandartificial surfacesbare terrainwaterwetland
January weather nearby: Santa Teresita 4.0 km · Mar de Ajó 17 km · Pinamar 62 km · General Juan Madariaga 62 km · Villa Gesell 81 km · Dolores 92 km · Santa Clara del Mar 158 km · Chascomús 162 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 Mar del Tuyú (-36.5743°, -56.6939°, 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. 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. Topography is sampled from the Copernicus DEM GLO-90 elevation model (© ESA/Airbus) and ESA WorldCover 2021 land cover (CC BY 4.0).