San Lorenzo weather in January

In January, San Lorenzo sees average daytime highs of 33°C and overnight lows near 23°C, with 121 mm of rain across 12.7 wet days and about 13.4 hours of daylight. It is the 1st-warmest and 7th-wettest month of the year here.

Day-to-day highs hold fairly steady near 33°C through the month. The sky is clear or mostly clear about 42% of the time in January, and the air most often feels oppressive.

Daylight stretches from about 13 h 36 min at the start of January to 13 h 12 min by month's end. Set against the rest of the year, January is San Lorenzo's 7th-clearest and 10th-windiest month. For the whole year in context, see San Lorenzo's year-round climate.

Daytime high
33°
1st warmest
Overnight low
23°
12th coldest
Rainfall
121 mm
12.7 wet days
Daylight
13 h 24 min
6:17 AM – 7:42 PM
Cloud cover
52%
7th clearest
Wind
11 km/h
10th windiest
Solar energy
6.73 kWh/m²
Travel score
3.4
out of 10

San Lorenzo is city in Paraguay.

Density
4,069/km²
people per km²
Founded
1775

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 33°C through the month.

A typical January day in San Lorenzo reaches about 33°C in the afternoon and slips back to 23°C overnight — a 10°C spread between the day's warmth and the night's chill. On most days the high lands between 29°C and 36°C. Set against its neighbours, January runs about 1°C warmer than December and about 1°C warmer than February.

20°25°30°35°40°151015202531
Avg high (°C)Avg low (°C)
13323
23323
33323
43323
53323
63323
73323
83323
93323
103323
113323
123323
133323
143323
153323
163323
173323
183323
193323
203323
213323
223323
233323
243323
253323
263323
273323
283323
293323
303323
313323

How January really feels in San Lorenzo

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.

San Lorenzo 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
Jan33° / 23°12112.713.43.4
Feb32° / 23°14012.412.93.7
Mar31° / 22°11710.812.24.5
Apr28° / 19°1539.511.46.1
May24° / 16°1408.710.87.1
Jun23° / 14°1058.810.57.1
Jul23° / 13°797.810.67.4
Aug25° / 15°676.711.17.7
Sep27° / 16°1138.811.86.9
Oct29° / 19°19512.112.65.3
Nov30° / 20°19011.313.24.8
Dec32° / 22°16212.813.53.9

Cloud cover in January

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 42% of the time in January.

Beyond those clear spells, partly cloudy skies cover about 14% of January, with mostly cloudy or overcast conditions the remaining 44%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
15545
25644
35545
45545
55545
65644
75545
85545
95644
105743
115743
125743
135743
145743
155743
165743
175743
185743
195743
205743
215743
225743
235743
245743
255743
265743
275644
285644
295743
305743
315743

Chance of precipitation in January

Any precipitation

San Lorenzo gets around 121 mm of rain over 12.7 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 42% and peaks near 42% on the wettest days.

0%10%20%30%40%50%151015202531
Rain chance (%)
142
242
342
442
542
642
741
841
941
1041
1141
1241
1341
1442
1542
1642
1742
1842
1941
2041
2141
2241
2341
2441
2541
2641
2742
2842
2942
3042
3142

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 56% of days. Sticky, muggy-or-worse air turns up on roughly 88% of them.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)Miserable (%)
1039205414
2039205414
3039205315
4139205116
5139205116
6139215016
71310214916
81310214916
91310214916
101310215015
111310215114
121310215114
131310215213
141210215412
151210215511
161210215511
171210215610
18121021579
19121021588
20121021597
21111021607
22111021616
2311921626
2411922616
2501922635
2601822635
2701822636
2801822636
2901823626
3002823616
3102824607

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 13 h 36 min at the start of January to 13 h 12 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 6:07 AM to 6:28 AM, and sunset from 7:40 PM to 7:39 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
113.66:077:40
213.56:077:40
313.56:087:40
413.56:087:41
513.56:097:41
613.56:107:41
713.56:107:41
813.56:117:41
913.56:127:42
1013.56:127:42
1113.56:137:42
1213.56:147:42
1313.56:157:42
1413.46:157:42
1513.46:167:42
1613.46:177:42
1713.46:177:42
1813.46:187:42
1913.46:197:42
2013.46:207:42
2113.46:207:41
2213.36:217:41
2313.36:227:41
2413.36:237:41
2513.36:237:41
2613.36:247:41
2713.36:257:40
2813.26:267:40
2913.26:267:40
3013.26:277:39
3113.26:287:39

Solar energy in January

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in January, about 6.73 kWh/m² — the sunniest month for solar.

For context, solar energy here swings from a low near 2.78 kWh/m² to a high of 6.73 kWh/m² in January across the year — January's 6.73 kWh/m² sits near the top of that range.

0246151015202531
Solar energy (kWh/m²)Level
16.8Intense
26.8Intense
36.8Intense
46.8Intense
56.8Intense
66.8Intense
76.8Intense
86.8Intense
96.8Intense
106.8Intense
116.8Intense
126.8Intense
136.8Intense
146.8Intense
156.8Intense
166.7Intense
176.7Intense
186.7Intense
196.7Intense
206.7Intense
216.6Intense
226.6Intense
236.6Intense
246.6Intense
256.5Intense
266.5Intense
276.5Intense
286.5Intense
296.5Intense
306.4Intense
316.4Intense
Planning a trip in January

Is January a good time to visit San Lorenzo?

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

3.4
Sightseeing
12th-best month of the year
6.0
Beach & pool
10th-best month of the year

January is a weaker month for outdoor sightseeing in San Lorenzo.

What to pack for San Lorenzo in January

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

In January, San Lorenzo sees daytime highs around 33°C and nights near 23°C. Pack light clothes and sun protection. Worth having: rain gear. About 13 days see rain.

light clothessun protectionrain gear

UV index in San Lorenzo 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 Lorenzo peaks around January 17 at about 15 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near July 15 at about 5 (moderate).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeVery highHighModerateHighVery highExtremeJan 17UV 15Jul 15UV 5
UV index (midday)Level
Jan15Extreme
Feb14Extreme
Mar11Extreme
Apr9Very high
May6High
Jun5Moderate
Jul5Moderate
Aug5High
Sep8Very high
Oct8Very high
Nov12Extreme
Dec13Extreme

Air quality in San Lorenzo 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 Lorenzo is worst in September — around 33 µg/m³ PM2.5 (moderate), about 2.7× the cleanest month (December, 12 µg/m³).

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

010203040JanFebMarAprMayJunJulAugSepOctNovDecModerateSep 933 µg/m³Dec 1312 µg/m³
PM2.5 (µg/m³)Level
Jan16Moderate
Feb18Moderate
Mar18Moderate
Apr13Moderate
May13Moderate
Jun14Moderate
Jul17Moderate
Aug32Moderate
Sep33Moderate
Oct21Moderate
Nov14Moderate
Dec12Good
Location & terrain

Where is San Lorenzo?

San Lorenzo sits at 25.3°S, 57.5°W, 119 m above sea level, in Paraguay. The nearest listed city is Fernando de la Mora, 1.0 km away.

Topography around San Lorenzo

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

Within 3 km, the terrain around San Lorenzo has only modest variations in elevation — a maximum elevation change of 89 m around an average of 133 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 196 m; within 80 km, significant variations in elevation — a maximum elevation change of 529 m.

The land around San Lorenzo is covered by artificial surfaces (53%) and trees (43%) within 3 km, trees (59%) and artificial surfaces (27%) within 16 km, and grassland (52%) and trees (41%) within 80 km.

3 km
89 m
16 km
196 m
80 km
529 m
treesgrasslandcroplandartificial surfaceswaterwetland
January weather nearby: Fernando de la Mora 1.0 km · Capiatá 7.0 km · Nemby 7.0 km · Villa Elisa 9.0 km · Lambaré 10 km · San Antonio 10 km · Areguá 13 km · Mariano Roque Alonso 15 km

Paraguay travel facts

Travel advisory
Level 1
Exercise Normal Precautions
Power plugs
Type A / B / C / N
220 V · 50 Hz
Prices
≈ 35% of US
price level, 2025
GDP per capita
$7,027
2025
Happiness
6.2 / 10
World Happiness, 2025
Safe drinking water
64%
of population, 2024
Homicide rate
6.8
per 100k, 2023
Road deaths
22
per 100k/yr, 2019
Income group
Upper middle
World Bank
English
Moderate
EF EPI 531
Religion
Roman Catholic 80%Protestant 7%Believer 6%other 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 Lorenzo (-25.3397°, -57.5088°, elevation 119 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).