São Lourenço da Serra weather in January

In January, São Lourenço da Serra sees average daytime highs of 26°C and overnight lows near 19°C, with 292 mm of rain across 25.9 wet days and about 13.3 hours of daylight. It is the 2nd-warmest and 1st-wettest month of the year here.

Day-to-day highs hold fairly steady near 26°C through the month. The sky is clear or mostly clear about 7% of the time in January, and the air most often feels muggy.

Daylight stretches from about 13 h 24 min at the start of January to 13 h 06 min by month's end. Set against the rest of the year, January is São Lourenço da Serra's 12th-clearest and 6th-windiest month. For the whole year in context, see São Lourenço da Serra's year-round climate.

Daytime high
26°
2nd warmest
Overnight low
19°
11th coldest
Rainfall
292 mm
25.9 wet days
Daylight
13 h 18 min
6:37 AM – 7:57 PM
Cloud cover
81%
12th clearest
Wind
10 km/h
6th windiest
Solar energy
5.37 kWh/m²
Travel score
4.1
out of 10

São Lourenço da Serra is human settlement in Brazil.

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 26°C through the month.

A typical January day in São Lourenço da Serra reaches about 26°C in the afternoon and slips back to 19°C overnight — a 8°C spread between the day's warmth and the night's chill. On most days the high lands between 22°C and 30°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)
12619
22619
32619
42619
52619
62619
72619
82619
92619
102619
112619
122619
132619
142619
152619
162619
172619
182619
192619
202619
212619
222619
232619
242619
252619
262719
272719
282719
292719
302719
312719

São Lourenço da Serra weather by month

How January compares with the rest of the year at a glance. January is the 2nd-warmest and 1st-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan26° / 19°29225.913.34.1
Feb27° / 19°23822.212.84.3
Mar26° / 18°20922.812.24.7
Apr24° / 16°9113.411.56.2
May22° / 14°739.510.96.7
Jun21° / 13°616.810.67.1
Jul21° / 12°646.610.77.1
Aug22° / 12°506.411.27.4
Sep23° / 14°10711.111.96.6
Oct24° / 15°1441712.65.6
Nov24° / 16°18819.213.25.2
Dec26° / 18°22923.113.44.6

Cloud cover in January

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 7% of the time in January, the cloudiest month of the year.

Beyond those clear spells, partly cloudy skies cover about 12% of January, with mostly cloudy or overcast conditions the remaining 80%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
11882
21783
31783
41783
51783
61783
71783
81783
91783
101783
111882
121882
131882
141882
151981
161981
171981
181981
191981
201981
212080
222080
232080
242278
252278
262278
272377
282377
292476
302575
312575

Chance of precipitation in January

Any precipitation

São Lourenço da Serra gets around 292 mm of rain over 25.9 wet days in January, the wettest month. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 83% and peaks near 83% on the wettest days.

0%20%40%60%80%151015202531
Rain chance (%)
180
281
381
481
582
682
783
883
983
1083
1183
1283
1383
1483
1583
1683
1783
1883
1983
2083
2183
2283
2383
2483
2583
2683
2783
2883
2982
3082
3181

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 72% of days. Sticky, muggy-or-worse air turns up on roughly 76% of them.

0%25%50%75%100%151015202531
Comfortable (%)Humid (%)Muggy (%)Oppressive (%)
1325693
2324703
3324703
4323713
5322723
6322723
7321733
8321733
9321724
10320734
11320734
12320734
13320734
14321724
15321724
16321724
17322714
18322714
19322714
20322714
21322714
22322714
23321733
24321733
25320743
26320743
27320743
28319753
29319753
30318763
31318763

Wind in January

Winds average 10 km/h in January.

Across January, daily wind ranges from about 9 km/h on the calmest days to 10 km/h at its breeziest. It stays fairly steady from day to day.

051015151015202531
Wind speed (km/h)Feels
110calm
210calm
310calm
410calm
510calm
610calm
710calm
810calm
910calm
1010calm
1110calm
1210calm
1310calm
1410calm
1510calm
1610calm
1710calm
1810calm
1910calm
2010calm
2110calm
2210calm
2310calm
2410calm
2510calm
2610calm
2710calm
2810calm
2910calm
309calm
319calm

Sunrise & sunset in January

DaylightNight

Daylight runs from about 13 h 24 min at the start of January to 13 h 06 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 6:27 AM to 6:48 AM, and sunset from 7:54 PM to 7:54 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
113.46:277:54
213.46:287:55
313.46:297:55
413.46:297:55
513.46:307:55
613.46:317:56
713.46:317:56
813.46:327:56
913.46:337:56
1013.46:337:56
1113.46:347:56
1213.46:357:57
1313.46:357:57
1413.36:367:57
1513.36:377:57
1613.36:377:57
1713.36:387:57
1813.36:397:57
1913.36:397:57
2013.36:407:57
2113.36:417:57
2213.26:427:56
2313.26:427:56
2413.26:437:56
2513.26:447:56
2613.26:447:56
2713.26:457:55
2813.26:467:55
2913.16:467:55
3013.16:477:55
3113.16:487:54

Solar energy in January

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in January, about 5.37 kWh/m².

For context, solar energy here swings from a low near 3.23 kWh/m² to a high of 5.67 kWh/m² in December across the year — January's 5.37 kWh/m² falls in the middle.

0246151015202531
Solar energy (kWh/m²)Level
15.6Bright
25.5Bright
35.5Bright
45.5Bright
55.5Bright
65.5Bright
75.5Bright
85.5Bright
95.5Bright
105.5Bright
115.5Bright
125.5Bright
135.5Bright
145.4Bright
155.4Bright
165.4Bright
175.4Bright
185.4Bright
195.4Bright
205.4Bright
215.4Bright
225.4Bright
235.4Bright
245.4Bright
255.4Bright
265.4Bright
275.4Bright
285.4Bright
295.4Bright
305.4Bright
315.4Bright
Planning a trip in January

Hazard calendar for São Lourenço da Serra

In seasonPeak

In January, São Lourenço da Serra sits inside its rainy season season. The full year is below, with each hazard's peak months called out.

São Lourenço da Serra's rainy season runs October–March, when most of the year's rain falls.

Rainy season
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec

Is January a good time to visit São Lourenço da Serra?

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

4.1
Sightseeing
12th-best month of the year
4.1
Beach & pool
12th-best month of the year

January is a reasonable time to visit São Lourenço da Serra for sightseeing.

What to pack for São Lourenço da Serra in January

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

In January, São Lourenço da Serra sees daytime highs around 26°C and nights near 19°C. Pack rain gear. Worth having: light clothes and sun protection. About 26 days see rain.

rain gearlight clothessun protection

Sea temperature near São Lourenço da Serra in January

The nearest coast averages about 27°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 44 km away) is warmest in February at about 27°C and coldest in August near 20°C.

The water stays above 20°C all year — warm enough for a swim any month.

20°25°JanFebMarAprMayJunJulAugSepOctNovDeccoolrefreshingwarmtropicalcomfortable to swim
Sea temperature (°C)Comfort
Jan27Warm
Feb27Warm
Mar27Warm
Apr26Warm
May24Refreshing
Jun22Refreshing
Jul21Refreshing
Aug20Refreshing
Sep21Refreshing
Oct22Refreshing
Nov23Refreshing
Dec25Warm

UV index in São Lourenço da Serra in January

LowModerateHighVery highExtreme

Clear-sky midday UV in January peaks around 14 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in São Lourenço da Serra peaks around January 23 at about 14 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near July 12 at about 5 (high).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeVery highHighVery highExtremeJan 23UV 14Jul 12UV 5
UV index (midday)Level
Jan14Extreme
Feb14Extreme
Mar9Very high
Apr8Very high
May7High
Jun6High
Jul5Moderate
Aug7High
Sep7Very high
Oct10Extreme
Nov13Extreme
Dec13Extreme

Air quality in São Lourenço da Serra 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 São Lourenço da Serra is worst in July — around 33 µg/m³ PM2.5 (moderate), about 2.0× the cleanest month (January, 17 µg/m³).

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

010203040JanFebMarAprMayJunJulAugSepOctNovDecModerateJul 2033 µg/m³Jan 1817 µg/m³
PM2.5 (µg/m³)Level
Jan17Moderate
Feb17Moderate
Mar18Moderate
Apr20Moderate
May24Moderate
Jun30Moderate
Jul33Moderate
Aug32Moderate
Sep29Moderate
Oct21Moderate
Nov17Moderate
Dec17Moderate
Location & terrain

Where is São Lourenço da Serra?

São Lourenço da Serra sits at 23.9°S, 46.9°W, 706 m above sea level, in Brazil. The nearest listed city is Embu-Guaçu, 14 km away.

Topography around São Lourenço da Serra

How much the land rises and falls, and what covers it, within 3, 16 and 80 km of São Lourenço da Serra.

Within 3 km, the terrain around São Lourenço da Serra has only modest variations in elevation — a maximum elevation change of 184 m around an average of 759 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 417 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,416 m.

The land around São Lourenço da Serra is covered by trees (87%) within 3 km, trees (90%) within 16 km, and trees (59%) within 80 km.

3 km
184 m
16 km
417 m
80 km
1,416 m
treesgrasslandcroplandartificial surfaceswatermangroves
January weather nearby: Embu-Guaçu 14 km · Juquitiba 16 km · Itapecerica da Serra 18 km · Parelheiros 22 km · Jardim Angela 23 km · Embu das Artes 24 km · Capao Redondo 26 km · Cotia 28 km

Brazil travel facts

Travel advisory
Level 2
Exercise Increased Caution
Power plugs
Type C / N
127 / 220 V · 60 Hz
Prices
≈ 46% of US
price level, 2025
GDP per capita
$10,713
2025
Happiness
6.6 / 10
World Happiness, 2025
Safe drinking water
89%
of population, 2024
Homicide rate
19.3
per 100k, 2023
Road deaths
16
per 100k/yr, 2019
Income group
Upper middle
World Bank
English
Low
EF EPI 482
Religion
Roman Catholic 57%Evangelical 27%none 9%other 4%

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 São Lourenço da Serra (-23.8525°, -46.9425°, elevation 706 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).