Guararema weather in January

In January, Guararema sees average daytime highs of 28°C and overnight lows near 20°C, with 254 mm of rain across 24.7 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 28°C through the month. The sky is clear or mostly clear about 11% 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 Guararema's 12th-clearest and 9th-windiest month. For the whole year in context, see Guararema's year-round climate.

Daytime high
28°
2nd warmest
Overnight low
20°
12th coldest
Rainfall
254 mm
24.7 wet days
Daylight
13 h 18 min
6:35 AM – 7:52 PM
Cloud cover
78%
12th clearest
Wind
7 km/h
9th windiest
Solar energy
5.34 kWh/m²
Travel score
4.2
out of 10

Guararema 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 28°C through the month.

A typical January day in Guararema reaches about 28°C in the afternoon and slips back to 20°C overnight — a 8°C spread between the day's warmth and the night's chill. On most days the high lands between 24°C and 31°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)
12719
22719
32819
42819
52820
62820
72820
82820
92820
102820
112820
122820
132820
142820
152820
162820
172820
182820
192820
202820
212820
222820
232820
242820
252820
262820
272820
282820
292820
302820
312820

Guararema 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
Jan28° / 20°25424.713.34.2
Feb28° / 20°19320.712.84.3
Mar27° / 19°16921.512.24.8
Apr26° / 17°721211.56.4
May23° / 15°66910.97.0
Jun23° / 13°445.910.67.5
Jul22° / 12°53610.77.5
Aug23° / 13°42611.27.7
Sep24° / 15°8510.811.96.8
Oct25° / 17°11214.612.55.8
Nov26° / 17°15117.713.15.3
Dec27° / 19°19121.613.44.6

Cloud cover in January

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 11% of the time in January, the cloudiest month of the year.

Beyond those clear spells, partly cloudy skies cover about 13% of January, with mostly cloudy or overcast conditions the remaining 77%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
12377
22377
32278
42278
52278
62278
72278
82278
92278
102278
112377
122377
132377
142377
152377
162377
172377
182377
192377
202377
212377
222377
232377
242476
252476
262476
272476
282575
292674
302773
312773

Chance of precipitation in January

Any precipitation

Guararema gets around 254 mm of rain over 24.7 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 78% and peaks near 80% on the wettest days.

0%20%40%60%80%151015202531
Rain chance (%)
175
276
376
476
577
678
778
879
979
1079
1179
1279
1379
1479
1579
1679
1780
1880
1980
2080
2180
2280
2379
2479
2579
2678
2778
2878
2977
3077
3177

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 71% of days. Sticky, muggy-or-worse air turns up on roughly 86% of them.

0%25%50%75%100%151015202531
Comfortable (%)Humid (%)Muggy (%)Oppressive (%)
10167212
20157213
30157213
40147214
50147214
60137215
70137215
80127315
90127315
100127216
111127116
121127116
131127116
141127116
151127116
161137016
171137016
181137016
191137016
201146916
211147015
221147015
231147015
241147015
251137115
261137115
271137115
281127215
291127215
301117315
311117315

Wind in January

Winds average 7 km/h in January.

Across January, daily wind ranges from about 7 km/h on the calmest days to 7 km/h at its breeziest. It stays fairly steady from day to day.

0246810151015202531
Wind speed (km/h)Feels
17calm
27calm
37calm
47calm
57calm
67calm
77calm
87calm
97calm
107calm
117calm
127calm
137calm
147calm
157calm
167calm
177calm
187calm
197calm
207calm
217calm
227calm
237calm
247calm
257calm
267calm
277calm
287calm
297calm
307calm
317calm

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 6:25 AM to 6:45 AM, and sunset from 7:50 PM to 7:50 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
113.46:257:50
213.46:257:50
313.46:267:50
413.46:277:51
513.46:277:51
613.46:287:51
713.46:287:51
813.46:297:52
913.46:307:52
1013.46:307:52
1113.36:317:52
1213.36:327:52
1313.36:327:52
1413.36:337:52
1513.36:347:52
1613.36:357:52
1713.36:357:52
1813.36:367:52
1913.36:377:52
2013.26:377:52
2113.26:387:52
2213.26:397:52
2313.26:397:52
2413.26:407:52
2513.26:417:52
2613.26:417:51
2713.16:427:51
2813.16:437:51
2913.16:447:51
3013.16:447:50
3113.16:457:50

Solar energy in January

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in January, about 5.34 kWh/m².

For context, solar energy here swings from a low near 3.26 kWh/m² to a high of 5.59 kWh/m² in December across the year — January's 5.34 kWh/m² falls in the middle.

0246151015202531
Solar energy (kWh/m²)Level
15.5Bright
25.5Bright
35.5Bright
45.4Bright
55.4Bright
65.4Bright
75.4Bright
85.4Bright
95.4Bright
105.4Bright
115.4Bright
125.4Bright
135.4Bright
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
305.5Bright
315.5Bright
Planning a trip in January

Hazard calendar for Guararema

In seasonPeak

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

Guararema's rainy season runs November–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 Guararema?

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

4.2
Sightseeing
12th-best month of the year
4.5
Beach & pool
12th-best month of the year

January is a reasonable time to visit Guararema for sightseeing.

What to pack for Guararema in January

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

In January, Guararema sees daytime highs around 28°C and nights near 20°C. Pack light clothes and rain gear. Worth having: sun protection. About 25 days see rain.

light clothesrain gearsun protection

Sea temperature near Guararema 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 52 km away) is warmest in February at about 27°C and coldest in August near 21°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
Aug21Refreshing
Sep21Refreshing
Oct22Refreshing
Nov23Refreshing
Dec25Warm

UV index in Guararema 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 Guararema peaks around February 9 at about 15 (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 highExtremeFeb 9UV 15Jul 12UV 5
UV index (midday)Level
Jan14Extreme
Feb15Extreme
Mar11Extreme
Apr9Very high
May7High
Jun6High
Jul5High
Aug8Very high
Sep8Very high
Oct11Extreme
Nov13Extreme
Dec14Extreme

Air quality in Guararema 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 Guararema is worst in June — around 32 µg/m³ PM2.5 (moderate), about 2.0× the cleanest month (November, 16 µg/m³).

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

010203040JanFebMarAprMayJunJulAugSepOctNovDecModerateJun 2132 µg/m³Nov 2316 µg/m³
PM2.5 (µg/m³)Level
Jan16Moderate
Feb17Moderate
Mar19Moderate
Apr21Moderate
May27Moderate
Jun32Moderate
Jul31Moderate
Aug28Moderate
Sep28Moderate
Oct20Moderate
Nov16Moderate
Dec16Moderate
Location & terrain

Where is Guararema?

Guararema sits at 23.4°S, 46.0°W, 583 m above sea level, in Brazil. The nearest listed city is Jacareí, 14 km away.

Topography around Guararema

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

Within 3 km, the terrain around Guararema has only modest variations in elevation — a maximum elevation change of 196 m around an average of 623 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 569 m; within 80 km, very significant variations in elevation — a maximum elevation change of 2,071 m.

The land around Guararema is covered by trees (52%) and grassland (37%) within 3 km, trees (52%) and grassland (41%) within 16 km, and trees (50%) and grassland (22%) within 80 km.

3 km
196 m
16 km
569 m
80 km
2,071 m
treesgrasslandcroplandartificial surfaceswater
January weather nearby: Jacareí 14 km · Biritiba Mirim 18 km · Mogi das Cruzes 20 km · Santa Isabel 22 km · Salesópolis 23 km · Bairro da Penha 29 km · Bairro Parque Nossa Senhora do Carmo 29 km · Arujá 29 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 Guararema (-23.415°, -46.035°, elevation 583 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).