San Pedro weather in January

In January, San Pedro sees average daytime highs of 29°C and overnight lows near 20°C, with 186 mm of rain across 19.3 wet days and about 13.5 hours of daylight. It is the 1st-warmest and 3rd-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 27% of the time in January, and the air most often feels muggy.

Daylight stretches from about 13 h 36 min at the start of January to 13 h 18 min by month's end. Set against the rest of the year, January is San Pedro's 12th-clearest and 10th-windiest month. For the whole year in context, see San Pedro's year-round climate.

Daytime high
29°
1st warmest
Overnight low
20°
12th coldest
Rainfall
186 mm
19.3 wet days
Daylight
13 h 30 min
6:01 AM – 7:31 PM
Cloud cover
63%
12th clearest
Wind
9 km/h
10th windiest
Solar energy
6.16 kWh/m²
Travel score
4.3
out of 10

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 San Pedro reaches about 29°C in the afternoon and slips back to 20°C overnight — a 9°C spread between the day's warmth and the night's chill. On most days the high lands between 25°C and 32°C. Set against its neighbours, January runs on par with December and on par with February.

15°20°25°30°35°151015202531
Avg high (°C)Avg low (°C)
12920
22920
32920
42920
52920
62920
72920
82920
92920
102920
112920
122920
132920
142920
152920
162920
172920
182920
192920
202920
212920
222920
232920
242920
252920
262920
272920
282920
292920
302920
312920

San Pedro weather by month

How January compares with the rest of the year at a glance. January is the 1st-warmest and 3rd-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan29° / 20°18619.313.54.3
Feb28° / 19°17517.812.94.5
Mar28° / 18°16115.512.25.5
Apr25° / 16°15211.611.46.6
May21° / 13°16210.510.76.6
Jun20° / 12°1639.810.46.4
Jul20° / 11°1409.710.56.6
Aug23° / 13°1087.711.17.5
Sep24° / 14°18011.511.86.9
Oct26° / 16°2341512.65.9
Nov27° / 17°17513.613.35.9
Dec29° / 19°20117.413.64.7

Cloud cover in January

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 27% of the time in January, the cloudiest month of the year.

Beyond those clear spells, partly cloudy skies cover about 21% of January, with mostly cloudy or overcast conditions the remaining 52%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
14654
24654
34654
44555
54555
64654
74654
84753
94753
104852
114852
124852
134852
144753
154753
164852
174852
184852
194852
204951
214852
224852
234951
244951
254951
264951
274951
284951
295050
305050
315149

Chance of precipitation in January

Any precipitation

San Pedro gets around 186 mm of rain over 19.3 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 63% and peaks near 63% on the wettest days.

0%20%40%60%151015202531
Rain chance (%)
162
262
363
463
563
663
762
862
962
1062
1162
1262
1362
1462
1563
1663
1763
1863
1963
2063
2163
2263
2363
2463
2563
2663
2763
2863
2963
3062
3162

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 56% of days. Sticky, muggy-or-worse air turns up on roughly 76% of them.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)
117214625
216214725
316214725
416214725
516214725
615214824
715214924
815214923
915215023
1015215122
1114215321
1214205421
1314205520
1414195719
1514195818
1614185918
1714186017
1814186017
1914186017
2014176216
2114176216
2214176216
2314176216
2414176216
2514176216
2604176217
2703176317
2803176317
2903176317
3003176218
3103186118

Wind in January

Winds average 9 km/h in January.

Across January, daily wind ranges from about 9 km/h on the calmest days to 9 km/h at its breeziest. It stays fairly steady from day to day.

051015151015202531
Wind speed (km/h)Feels
19calm
29calm
39calm
49calm
59calm
69calm
79calm
89calm
99calm
109calm
119calm
129calm
139calm
149calm
159calm
169calm
179calm
189calm
199calm
209calm
219calm
229calm
239calm
249calm
259calm
269calm
279calm
289calm
299calm
309calm
319calm

Sunrise & sunset in January

DaylightNight

Daylight runs from about 13 h 36 min at the start of January to 13 h 18 min by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 18 minutes over January. Sunrise moves from 5:50 AM to 6:12 AM, and sunset from 7:29 PM to 7:27 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
113.65:507:29
213.65:517:29
313.65:517:29
413.65:527:30
513.65:537:30
613.65:537:30
713.65:547:30
813.65:557:30
913.65:567:31
1013.65:567:31
1113.65:577:31
1213.65:587:31
1313.55:587:31
1413.55:597:31
1513.56:007:31
1613.56:017:31
1713.56:017:31
1813.56:027:31
1913.56:037:31
2013.46:047:30
2113.46:047:30
2213.46:057:30
2313.46:067:30
2413.46:077:30
2513.46:077:29
2613.36:087:29
2713.36:097:29
2813.36:107:29
2913.36:117:28
3013.36:117:28
3113.36:127:27

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 2.78 kWh/m² to a high of 6.25 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
16.2Intense
26.2Intense
36.2Intense
46.2Intense
56.2Intense
66.2Intense
76.2Intense
86.2Intense
96.2Intense
106.2Intense
116.2Intense
126.2Intense
136.2Intense
146.2Intense
156.2Intense
166.2Intense
176.2Intense
186.1Intense
196.1Intense
206.1Intense
216.1Intense
226.1Intense
236.1Intense
246.1Intense
256.0Intense
266.0Intense
276.0Intense
286.0Bright
296.0Bright
305.9Bright
315.9Bright
Planning a trip in January

Is January a good time to visit San Pedro?

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

4.3
Sightseeing
12th-best month of the year
5.5
Beach & pool
8th-best month of the year

January is a reasonable time to visit San Pedro for sightseeing.

What to pack for San Pedro in January

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

In January, San Pedro sees daytime highs around 29°C and nights near 20°C. Pack light clothes, rain gear and sun protection. About 19 days see rain.

light clothesrain gearsun protection

UV index in San Pedro 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 San Pedro peaks around January 21 at about 14 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near June 22 at about 4 (moderate).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeVery highHighModerateHighVery highExtremeJan 21UV 14Jun 22UV 4
UV index (midday)Level
Jan15Extreme
Feb14Extreme
Mar11Extreme
Apr8Very high
May6High
Jun4Moderate
Jul5Moderate
Aug6High
Sep7Very high
Oct9Very high
Nov11Extreme
Dec13Extreme

Air quality in San Pedro 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 San Pedro is worst in September — around 24 µg/m³ PM2.5 (moderate), about 4.1× the cleanest month (March, 6 µg/m³).

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

0102030JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateGoodSep 1023 µg/m³Mar 176 µg/m³
PM2.5 (µg/m³)Level
Jan7Good
Feb7Good
Mar6Good
Apr7Good
May6Good
Jun6Good
Jul10Good
Aug22Moderate
Sep24Moderate
Oct12Good
Nov9Good
Dec7Good
Location & terrain

Where is San Pedro?

San Pedro sits at 26.6°S, 54.1°W, 554 m above sea level, in Argentina. The nearest listed city is San Vicente, 2.0 km away.

Topography around San Pedro

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

Within 3 km, the terrain around San Pedro has only modest variations in elevation — a maximum elevation change of 122 m around an average of 557 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 471 m; within 80 km, large variations in elevation — a maximum elevation change of 817 m.

The land around San Pedro is covered by trees (76%) within 3 km, trees (87%) within 16 km, and trees (83%) within 80 km.

3 km
122 m
16 km
471 m
80 km
817 m
treesgrasslandcroplandartificial surfaces
January weather nearby: San Vicente 2.0 km · Eldorado 56 km · São Miguel d'Oeste 60 km · Dionísio Cerqueira 62 km · Montecarlo 65 km · Santo Antônio do Sudoeste 72 km · Itapiranga 72 km · El Soberbio 76 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 San Pedro (-26.6218°, -54.109°, elevation 554 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).