Peritoró weather in January

In January, Peritoró sees average daytime highs of 31°C and overnight lows near 23°C, with 251 mm of rain across 25.3 wet days and about 12.2 hours of daylight. It is the 8th-warmest and 4th-wettest month of the year here.

Day-to-day highs hold fairly steady near 31°C through the month. The sky is clear or mostly clear about 6% of the time in January, and the air most often feels oppressive.

Daylight stretches from about 12 h 12 min at the start of January to 12 h 12 min by month's end. Set against the rest of the year, January is Peritoró's 10th-clearest and 9th-windiest month. For the whole year in context, see Peritoró's year-round climate.

Daytime high
31°
8th warmest
Overnight low
23°
8th coldest
Rainfall
251 mm
25.3 wet days
Daylight
12 h 12 min
6:00 AM – 6:13 PM
Cloud cover
79%
10th clearest
Wind
5 km/h
9th windiest
Solar energy
4.73 kWh/m²
Travel score
2.7
out of 10

Temperature in January

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 31°C through the month.

A typical January day in Peritoró reaches about 31°C in the afternoon and slips back to 23°C overnight — a 8°C spread between the day's warmth and the night's chill. On most days the high lands between 29°C and 34°C. Set against its neighbours, January runs about 2°C cooler than December and on par with February.

20°25°30°35°151015202531
Avg high (°C)Avg low (°C)
13223
23223
33223
43223
53223
63223
73223
83223
93223
103223
113223
123223
133123
143123
153123
163123
173123
183123
193123
203123
213123
223123
233123
243123
253123
263123
273123
283123
293123
303123
313123

How January really feels in Peritoró

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.

Peritoró weather by month

How January compares with the rest of the year at a glance. January is the 8th-warmest and 4th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan31° / 23°25125.312.22.7
Feb31° / 23°26224.912.12.6
Mar31° / 23°33629.2122.6
Apr31° / 23°28126.611.92.8
May31° / 23°1331811.83.6
Jun32° / 23°30611.84.6
Jul32° / 22°122.311.84.6
Aug34° / 22°40.711.94.0
Sep35° / 23°81.3123.3
Oct35° / 24°17312.13.0
Nov34° / 24°507.812.23.0
Dec33° / 24°12814.912.22.9

Cloud cover in January

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 6% of the time in January.

Beyond those clear spells, partly cloudy skies cover about 11% of January, with mostly cloudy or overcast conditions the remaining 84%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
12476
22377
32377
42179
52179
61981
71981
81882
91783
101684
111585
121486
131387
141387
151387
161288
171288
181288
191288
201387
211486
221486
231585
241585
251585
261684
271684
281684
291783
301783
311783

Chance of precipitation in January

Any precipitation

Peritoró gets around 251 mm of rain over 25.3 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 82% and peaks near 84% on the wettest days. The odds climb toward the end of the month.

0%20%40%60%80%151015202531
Rain chance (%)
172
273
375
476
577
678
779
880
980
1081
1182
1283
1383
1484
1584
1684
1784
1884
1984
2083
2183
2283
2384
2484
2584
2684
2784
2884
2984
3084
3184

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 74% of days. Sticky, muggy-or-worse air turns up on roughly 100% of them.

0%25%50%75%100%151015202531
Muggy (%)Oppressive (%)Miserable (%)
137918
237918
337918
437918
537918
637918
737918
837819
937819
1037720
1137621
1227721
1327622
1427523
1527424
1627325
1727226
1817227
1917128
2017128
2117029
2217029
2317029
2407129
2507129
2607030
2707030
2807030
2907030
3006931
3106931

Wind in January

Winds average 5 km/h in January.

Across January, daily wind ranges from about 5 km/h on the calmest days to 5 km/h at its breeziest. It stays fairly steady from day to day.

0246810151015202531
Wind speed (km/h)Feels
15calm
25calm
35calm
45calm
55calm
65calm
75calm
85calm
95calm
105calm
115calm
125calm
135calm
145calm
155calm
165calm
175calm
185calm
195calm
205calm
215calm
225calm
235calm
245calm
255calm
265calm
275calm
285calm
295calm
305calm
315calm

Sunrise & sunset in January

DaylightNight

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

Days grow by about 0 minutes over January. Sunrise moves from 5:53 AM to 6:05 AM, and sunset from 6:08 PM to 6:16 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
112.25:536:08
212.25:536:08
312.25:546:09
412.25:546:09
512.25:556:10
612.25:556:10
712.25:566:10
812.25:566:11
912.25:576:11
1012.25:576:12
1112.25:586:12
1212.25:586:12
1312.25:596:13
1412.25:596:13
1512.25:596:13
1612.26:006:13
1712.26:006:14
1812.26:016:14
1912.26:016:14
2012.26:016:15
2112.26:026:15
2212.26:026:15
2312.26:026:15
2412.26:036:15
2512.26:036:16
2612.26:036:16
2712.26:046:16
2812.26:046:16
2912.26:046:16
3012.26:056:16
3112.26:056:16

Solar energy in January

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in January, about 4.73 kWh/m².

For context, solar energy here swings from a low near 4.36 kWh/m² to a high of 6.33 kWh/m² in September across the year — January's 4.73 kWh/m² falls in the middle.

024151015202531
Solar energy (kWh/m²)Level
15.0Bright
24.9Bright
34.9Bright
44.9Bright
54.8Bright
64.8Bright
74.8Bright
84.8Bright
94.7Bright
104.7Bright
114.7Bright
124.7Bright
134.7Bright
144.7Bright
154.7Bright
164.6Bright
174.6Bright
184.6Bright
194.6Bright
204.7Bright
214.7Bright
224.7Bright
234.7Bright
244.7Bright
254.7Bright
264.7Bright
274.7Bright
284.7Bright
294.7Bright
304.7Bright
314.7Bright
Planning a trip in January

Hazard calendar for Peritoró

In seasonPeak

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

Peritoró's monsoon runs January–April, when most of the year's rain falls.

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

Is January a good time to visit Peritoró?

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

2.7
Sightseeing
10th-best month of the year
4.1
Beach & pool
9th-best month of the year

January is a weaker month for outdoor sightseeing in Peritoró.

What to pack for Peritoró in January

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

In January, Peritoró sees daytime highs around 31°C and nights near 23°C. Pack light clothes and rain gear. Worth having: sun protection. About 25 days see rain.

light clothesrain gearsun protection

UV index in Peritoró 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 Peritoró peaks around March 14 at about 15 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near August 10 at about 10 (very high).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeVery highExtremeMar 14UV 15Aug 10UV 10
UV index (midday)Level
Jan13Extreme
Feb14Extreme
Mar15Extreme
Apr14Extreme
May11Extreme
Jun10Extreme
Jul10Very high
Aug10Very high
Sep12Extreme
Oct12Extreme
Nov11Extreme
Dec11Extreme

Air quality in Peritoró 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 Peritoró is worst in October — around 35 µg/m³ PM2.5 (moderate), about 4.0× the cleanest month (June, 9 µg/m³).

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

010203040JanFebMarAprMayJunJulAugSepOctNovDecModerateGoodModerateOct 2134 µg/m³Jun 159 µg/m³
PM2.5 (µg/m³)Level
Jan15Moderate
Feb15Moderate
Mar14Moderate
Apr13Moderate
May10Good
Jun9Good
Jul11Good
Aug13Moderate
Sep19Moderate
Oct35Moderate
Nov30Moderate
Dec23Moderate
Location & terrain

Where is Peritoró?

Peritoró sits at 4.4°S, 44.3°W, 47 m above sea level, in Brazil. The nearest listed city is Alto Alegre do Maranhão, 23 km away.

Topography around Peritoró

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

Within 3 km, the terrain around Peritoró has only modest variations in elevation — a maximum elevation change of 83 m around an average of 57 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 128 m; within 80 km, only modest variations in elevation — a maximum elevation change of 227 m.

The land around Peritoró is covered by grassland (68%) within 3 km, trees (59%) and grassland (35%) within 16 km, and trees (52%) and grassland (42%) within 80 km.

3 km
83 m
16 km
128 m
80 km
227 m
treesshrubsgrasslandartificial surfaces
January weather nearby: Alto Alegre do Maranhão 23 km · Pedreiras 35 km · Coroatá 36 km · São Luís Gonzaga do Maranhão 37 km · Trizidela do Vale 38 km · São Mateus do Maranhão 41 km · Timbiras 46 km · Codó 50 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 Peritoró (-4.3833°, -44.3333°, elevation 47 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).