Santos weather in January

In January, Santos sees average daytime highs of 26°C and overnight lows near 24°C, with 226 mm of rain across 20.9 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 18% of the time in January, and the air most often feels oppressive.

Daylight stretches from about 13 h 30 min at the start of January to 13 h 06 min by month's end. Set against the rest of the year, January is Santos's 12th-clearest and 10th-windiest month. For the whole year in context, see Santos's year-round climate.

Daytime high
26°
2nd warmest
Overnight low
24°
11th coldest
Rainfall
226 mm
20.9 wet days
Daylight
13 h 18 min
6:35 AM – 7:55 PM
Cloud cover
71%
12th clearest
Wind
11 km/h
10th windiest
Solar energy
5.82 kWh/m²
Travel score
4.9
out of 10
Air quality
Moderate
PM2.5 15 µg/m³ · 2016

Air quality: WHO Ambient Air Quality Database. Density & description: Wikidata (CC0), GeoNames.

← DecemberSantos year-round climateFebruary →Best places to visit in January
JanFebMarAprMayJunJulAugSepOctNovDec

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 Santos reaches about 26°C in the afternoon and slips back to 24°C overnight — a 2°C spread between the day's warmth and the night's chill. On most days the high lands between 24°C and 29°C. Set against its neighbours, January runs about 1°C warmer than December and on par with February.

20°23°25°28°30°151015202531
Avg high (°C)Avg low (°C)
12624
22624
32624
42624
52624
62624
72624
82624
92624
102624
112624
122624
132624
142624
152624
162624
172624
182624
192624
202624
212624
222624
232724
242724
252724
262724
272724
282724
292724
302724
312724

Santos 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° / 24°22620.913.34.9
Feb27° / 24°19917.412.85.1
Mar26° / 24°20719.512.25.3
Apr25° / 22°12713.411.56.4
May23° / 20°12512.710.96.5
Jun22° / 19°971010.56.8
Jul21° / 18°1151010.76.8
Aug21° / 18°9410.211.26.6
Sep22° / 19°14214.311.95.9
Oct23° / 20°15916.212.65.6
Nov24° / 21°17416.813.25.7
Dec25° / 23°17918.213.55.4

Cloud cover in January

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 18% of the time in January, the cloudiest month of the year.

Beyond those clear spells, partly cloudy skies cover about 14% of January, with mostly cloudy or overcast conditions the remaining 67%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
13367
23367
33367
43268
53169
63169
73169
83169
93169
103169
113169
123169
133169
143268
153367
163367
173367
183367
193367
203367
213367
223367
233466
243565
253466
263466
273565
283466
293565
303664
313664

Chance of precipitation in January

Any precipitation

Santos gets around 226 mm of rain over 20.9 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 66% and peaks near 68% on the wettest days.

0%20%40%60%80%151015202531
Rain chance (%)
162
263
363
464
564
665
765
866
966
1066
1166
1266
1366
1466
1566
1667
1767
1867
1968
2068
2168
2268
2368
2467
2567
2667
2766
2866
2966
3065
3165

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 60% of days. Sticky, muggy-or-worse air turns up on roughly 98% of them.

0%25%50%75%100%151015202531
Humid (%)Muggy (%)Oppressive (%)Miserable (%)
13206314
23206215
33206116
43196216
53196117
62186317
72186218
82186218
92186218
102186119
112186119
122186119
132186119
142186119
152186119
162186119
172186119
182186119
192186020
202186020
212186020
222185921
232185921
242175922
252175922
262165923
272165824
282155924
292155825
302155825
312145826

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 30 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 24 minutes over January. Sunrise moves from 6:25 AM to 6:45 AM, and sunset from 7:52 PM to 7:52 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
113.56:257:52
213.56:257:52
313.46:267:53
413.46:277:53
513.46:277:53
613.46:287:53
713.46:297:54
813.46:297:54
913.46:307:54
1013.46:317:54
1113.46:317:54
1213.46:327:54
1313.46:337:54
1413.46:337:54
1513.36:347:55
1613.36:357:55
1713.36:357:55
1813.36:367:54
1913.36:377:54
2013.36:387:54
2113.36:387:54
2213.36:397:54
2313.26:407:54
2413.26:407:54
2513.26:417:54
2613.26:427:53
2713.26:427:53
2813.26:437:53
2913.16:447:53
3013.16:457:52
3113.16:457:52

Solar energy in January

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in January, about 5.82 kWh/m².

For context, solar energy here swings from a low near 3.16 kWh/m² to a high of 6.1 kWh/m² in December across the year — January's 5.82 kWh/m² sits near the top of that range.

0246151015202531
Solar energy (kWh/m²)Level
16.0Intense
26.0Intense
36.0Bright
46.0Bright
56.0Bright
66.0Bright
75.9Bright
85.9Bright
95.9Bright
105.9Bright
115.9Bright
125.9Bright
135.9Bright
145.9Bright
155.9Bright
165.9Bright
175.8Bright
185.8Bright
195.8Bright
205.8Bright
215.8Bright
225.8Bright
235.8Bright
245.8Bright
255.8Bright
265.8Bright
275.8Bright
285.8Bright
295.8Bright
305.8Bright
315.8Bright
Planning a trip in January

Is January a good time to visit Santos?

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

4.9
Sightseeing
12th-best month of the year
4.9
Beach & pool
6th-best month of the year

January is a reasonable time to visit Santos for sightseeing.

What to pack for Santos in January

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

In January, Santos sees daytime highs around 26°C and nights near 24°C. Pack rain gear. Worth having: light clothes and sun protection. About 21 days see rain.

rain gearlight clothessun protection

Sea temperature near Santos 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 19 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 Santos 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 Santos peaks around February 10 at about 14 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near July 12 at about 5 (moderate).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeVery highHighHighVery highExtremeFeb 10UV 14Jul 12UV 5
UV index (midday)Level
Jan13Extreme
Feb14Extreme
Mar10Very high
Apr8Very high
May6High
Jun5High
Jul5Moderate
Aug7High
Sep7Very high
Oct10Extreme
Nov12Extreme
Dec13Extreme

Air quality in Santos 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 Santos is worst in July — around 23 µg/m³ PM2.5 (moderate), about 2.1× the cleanest month (February, 11 µg/m³).

Seasonal pattern from CAMS reanalysis, scaled to Santos's WHO annual average of 15 µg/m³.

0102030JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateGoodJul 1422 µg/m³Feb 1311 µg/m³
PM2.5 (µg/m³)Level
Jan11Good
Feb11Good
Mar11Good
Apr12Moderate
May16Moderate
Jun22Moderate
Jul23Moderate
Aug21Moderate
Sep18Moderate
Oct13Moderate
Nov11Good
Dec11Good
Location & terrain

Where is Santos?

Santos sits at 24.0°S, 46.3°W, 12 m above sea level, in Brazil. The nearest listed city is São Vicente, 6.0 km away.

Topography around Santos

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

Within 3 km, the terrain around Santos has only modest variations in elevation — a maximum elevation change of 207 m around an average of 24 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 998 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,434 m.

The land around Santos is covered by artificial surfaces (54%) and water (27%) within 3 km, water (39%) and trees (33%) within 16 km, and water (47%) and trees (38%) within 80 km.

3 km
207 m
16 km
998 m
80 km
1,434 m
treesgrasslandartificial surfacesbare terrainwaterwetlandmangroves
← DecemberSantos year-round climateFebruary →Best places to visit in January
January weather nearby: São Vicente 6.0 km · Guarujá 9.0 km · Praia Grande 9.0 km · Cubatão 12 km · Bertioga 23 km · Rio Grande da Serra 25 km · Ribeirão Pires 29 km · Mongaguá 33 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 Santos (-23.9608°, -46.3336°, 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).