São Cristóvão weather in January

In January, São Cristóvão sees average daytime highs of 29°C and overnight lows near 24°C, with 56 mm of rain across 15.2 wet days and about 12.6 hours of daylight. It is the 3rd-warmest and 9th-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 46% of the time in January, and the air most often feels oppressive.

Daylight stretches from about 12 h 36 min at the start of January to 12 h 30 min by month's end. Set against the rest of the year, January is São Cristóvão's 9th-clearest and 5th-windiest month. For the whole year in context, see São Cristóvão's year-round climate.

Daytime high
29°
3rd warmest
Overnight low
24°
9th coldest
Rainfall
56 mm
15.2 wet days
Daylight
12 h 36 min
5:21 AM – 5:56 PM
Cloud cover
50%
9th clearest
Wind
16 km/h
5th windiest
Solar energy
6.35 kWh/m²
Travel score
5.2
out of 10

São Cristóvão 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 29°C through the month.

A typical January day in São Cristóvão reaches about 29°C in the afternoon and slips back to 24°C overnight — a 4°C spread between the day's warmth and the night's chill. On most days the high lands between 27°C and 30°C. Set against its neighbours, January runs on par with December and on par with February.

20°23°25°28°30°151015202531
Avg high (°C)Avg low (°C)
12824
22824
32924
42924
52924
62924
72924
82924
92924
102924
112924
122924
132924
142924
152924
162924
172925
182925
192925
202925
212925
222925
232925
242925
252925
262925
272925
282925
292925
302925
312925

How January really feels in São Cristóvão

Once humidity and wind are folded in, January averages 0 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
0
heat index over the day's high
Days feeling ≤ C
0
wind chill below the day's low

January sits comfortably in between — no days that feel dangerously hot or drop to a hard freeze once humidity and wind are folded in.

São Cristóvão weather by month

How January compares with the rest of the year at a glance. January is the 3rd-warmest and 9th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan29° / 24°5615.212.65.2
Feb29° / 25°6316.412.44.8
Mar29° / 25°7118.112.14.7
Apr28° / 25°11220.311.84.6
May27° / 24°15722.911.54.8
Jun26° / 23°1482411.44.7
Jul25° / 22°12523.911.44.9
Aug25° / 22°9822.111.65.2
Sep26° / 22°6417.211.95.8
Oct27° / 23°5213.912.26.2
Nov28° / 24°4111.112.56.3
Dec28° / 24°3310.112.65.9

Cloud cover in January

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 46% of the time in January.

Beyond those clear spells, partly cloudy skies cover about 17% of January, with mostly cloudy or overcast conditions the remaining 37%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
16139
26139
36139
46238
56238
66238
76337
86337
96337
106436
116436
126337
136337
146238
156238
166238
176238
186238
196238
206238
216238
226238
236238
246337
256337
266337
276337
286337
296436
306436
316535

Chance of precipitation in January

Any precipitation

São Cristóvão gets around 56 mm of rain over 15.2 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 48% and peaks near 54% on the wettest days. The odds climb toward the end of the month.

0%20%40%60%151015202531
Rain chance (%)
138
239
340
441
543
644
745
846
946
1047
1148
1248
1349
1450
1550
1650
1750
1850
1951
2051
2151
2251
2351
2452
2552
2652
2753
2853
2953
3054
3154

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 92% of days. Sticky, muggy-or-worse air turns up on roughly 100% of them.

0%25%50%75%100%151015202531
Muggy (%)Oppressive (%)Miserable (%)
18911
28911
38911
47921
57921
66931
76931
86922
96922
106922
116922
126922
136922
146922
156922
166922
176922
186922
197912
207912
217912
227912
237912
247912
256922
266922
276922
285932
295932
304942
314951

Wind in January

Winds average 16 km/h in January.

Across January, daily wind ranges from about 15 km/h on the calmest days to 16 km/h at its breeziest. It stays fairly steady from day to day.

05101520151015202531
Wind speed (km/h)Feels
116light breeze
216light breeze
316light breeze
416light breeze
516light breeze
616light breeze
716light breeze
816light breeze
916light breeze
1016light breeze
1116light breeze
1216light breeze
1316light breeze
1416light breeze
1516light breeze
1616light breeze
1715light breeze
1815light breeze
1915light breeze
2015light breeze
2115light breeze
2215light breeze
2315light breeze
2415light breeze
2515light breeze
2615light breeze
2715light breeze
2815light breeze
2915light breeze
3015light breeze
3115light breeze

Sunrise & sunset in January

DaylightNight

Daylight runs from about 12 h 36 min at the start of January to 12 h 30 min by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 6 minutes over January. Sunrise moves from 5:13 AM to 5:28 AM, and sunset from 5:51 PM to 5:57 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
112.65:135:51
212.65:135:51
312.65:145:52
412.65:145:52
512.65:155:52
612.65:165:53
712.65:165:53
812.65:175:53
912.65:175:54
1012.65:185:54
1112.65:185:54
1212.65:195:55
1312.65:195:55
1412.65:205:55
1512.65:205:55
1612.65:215:56
1712.65:215:56
1812.65:225:56
1912.65:225:56
2012.65:235:56
2112.65:235:56
2212.55:245:56
2312.55:245:57
2412.55:255:57
2512.55:255:57
2612.55:255:57
2712.55:265:57
2812.55:265:57
2912.55:275:57
3012.55:275:57
3112.55:285:57

Solar energy in January

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in January, about 6.35 kWh/m².

For context, solar energy here swings from a low near 4 kWh/m² to a high of 6.46 kWh/m² in December across the year — January's 6.35 kWh/m² sits near the top of that range.

0246151015202531
Solar energy (kWh/m²)Level
16.4Intense
26.4Intense
36.4Intense
46.4Intense
56.4Intense
66.4Intense
76.4Intense
86.4Intense
96.4Intense
106.4Intense
116.4Intense
126.4Intense
136.3Intense
146.3Intense
156.3Intense
166.3Intense
176.3Intense
186.3Intense
196.3Intense
206.3Intense
216.3Intense
226.3Intense
236.3Intense
246.3Intense
256.3Intense
266.3Intense
276.3Intense
286.3Intense
296.3Intense
306.3Intense
316.3Intense
Planning a trip in January

Hazard calendar for São Cristóvão

In seasonPeak

None of São Cristóvão's seasonal hazards are active in January. The full-year calendar below shows when the rainy season, cyclone risk and dust haze do peak.

São Cristóvão's rainy season runs March–August, 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 Cristóvão?

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

5.2
Sightseeing
5th-best month of the year
6.3
Beach & pool
3rd-best month of the year

January is a reasonable time to visit São Cristóvão for sightseeing. The water and warmth also suit a beach or pool day.

What to pack for São Cristóvão in January

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

In January, São Cristóvão sees daytime highs around 29°C and nights near 24°C. Pack light clothes, rain gear and sun protection. About 15 days see rain.

light clothesrain gearsun protection

Sea temperature near São Cristóvão 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 15 km away) is warmest in April at about 28°C and coldest in August near 26°C.

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

24°26°28°30°JanFebMarAprMayJunJulAugSepOctNovDecwarmtropicalcomfortable to swim
Sea temperature (°C)Comfort
Jan27Warm
Feb28Warm
Mar28Tropical
Apr28Tropical
May28Warm
Jun27Warm
Jul26Warm
Aug26Warm
Sep26Warm
Oct26Warm
Nov26Warm
Dec27Warm

UV index in São Cristóvão 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 São Cristóvão peaks around February 16 at about 15 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near July 10 at about 9 (very high).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeVery highExtremeFeb 16UV 15Jul 10UV 9
UV index (midday)Level
Jan13Extreme
Feb15Extreme
Mar14Extreme
Apr13Extreme
May10Very high
Jun9Very high
Jul9Very high
Aug10Very high
Sep12Extreme
Oct12Extreme
Nov13Extreme
Dec12Extreme
Location & terrain

Where is São Cristóvão?

São Cristóvão sits at 11.0°S, 37.2°W, 38 m above sea level, in Brazil. The nearest listed city is Itaporanga d'Ajuda, 12 km away.

Topography around São Cristóvão

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

Within 3 km, the terrain around São Cristóvão has only modest variations in elevation — a maximum elevation change of 89 m around an average of 26 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 146 m; within 80 km, large variations in elevation — a maximum elevation change of 694 m.

The land around São Cristóvão is covered by trees (43%) and grassland (32%) within 3 km, trees (36%) and grassland (33%) within 16 km, and grassland (44%) and water (29%) within 80 km.

3 km
89 m
16 km
146 m
80 km
694 m
treesshrubsgrasslandcroplandartificial surfacesbare terrainwaterwetlandmangroves
January weather nearby: Itaporanga d'Ajuda 12 km · Aracaju 19 km · Nossa Senhora do Socorro 20 km · Barra dos Coqueiros 22 km · Laranjeiras 24 km · Salgado 29 km · Areia Branca 31 km · Maruim 34 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 Cristóvão (-11.0147°, -37.2064°, elevation 38 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).