Igarapé-Açu weather in January

In January, Igarapé-Açu sees average daytime highs of 31°C and overnight lows near 23°C, with 213 mm of rain across 25.9 wet days and about 12.1 hours of daylight. It is the 8th-warmest and 5th-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 4% of the time in January, and the air most often feels oppressive.

Daylight stretches from about 12 h 06 min at the start of January to 12 hours by month's end. Set against the rest of the year, January is Igarapé-Açu's 9th-clearest and 6th-windiest month. For the whole year in context, see Igarapé-Açu's year-round climate.

Daytime high
31°
8th warmest
Overnight low
23°
9th coldest
Rainfall
213 mm
25.9 wet days
Daylight
12 h 06 min
6:18 AM – 6:22 PM
Cloud cover
81%
9th clearest
Wind
9 km/h
6th windiest
Solar energy
4.35 kWh/m²
Travel score
2.8
out of 10

Igarapé-Açu 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 31°C through the month.

A typical January day in Igarapé-Açu reaches about 31°C in the afternoon and slips back to 23°C overnight — a 7°C spread between the day's warmth and the night's chill. On most days the high lands between 28°C and 33°C. Set against its neighbours, January runs about 2°C cooler than December and about 1°C warmer than February.

20°25°30°35°151015202531
Avg high (°C)Avg low (°C)
13224
23224
33124
43124
53124
63124
73124
83124
93124
103124
113124
123124
133123
143123
153123
163123
173123
183123
193123
203123
213123
223123
233123
243023
253023
263023
273023
283023
293023
303023
313023

How January really feels in Igarapé-Açu

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.

Igarapé-Açu weather by month

How January compares with the rest of the year at a glance. January is the 8th-warmest and 5th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan31° / 23°21325.912.12.8
Feb30° / 23°28426.6122.7
Mar30° / 23°37330.2122.6
Apr30° / 23°34829.5122.6
May31° / 23°24527.211.92.8
Jun31° / 23°11421.111.93.3
Jul31° / 23°851811.93.7
Aug32° / 23°4312.4124.0
Sep33° / 23°277.7124.0
Oct33° / 24°225.5123.9
Nov33° / 24°336.612.13.7
Dec32° / 24°8014.512.13.3

Cloud cover in January

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 4% of the time in January.

Beyond those clear spells, partly cloudy skies cover about 12% of January, with mostly cloudy or overcast conditions the remaining 83%. Skies tend to cloud over as the month goes on.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
12773
22674
32575
42476
52476
62377
72278
82179
92179
101981
111981
121882
131783
141684
151585
161486
171486
181486
191288
201288
211288
221288
231288
241288
251288
261288
271189
281189
291090
301090
311090

Chance of precipitation in January

Any precipitation

Igarapé-Açu gets around 213 mm of rain over 25.9 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 83% and peaks near 90% on the wettest days. The odds climb toward the end of the month.

0%20%40%60%80%100%151015202531
Rain chance (%)
171
273
375
476
578
679
780
881
982
1082
1183
1284
1384
1485
1585
1686
1786
1886
1986
2085
2185
2286
2386
2486
2586
2687
2787
2888
2988
3089
3190

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 86% of days. Sticky, muggy-or-worse air turns up on roughly 100% of them.

0%25%50%75%100%151015202531
Oppressive (%)Miserable (%)
19010
29010
38911
48911
58911
68911
78911
88911
98911
108911
118911
128911
138911
148911
158911
168911
178812
188812
198713
208614
218614
228515
238416
248416
258317
268218
278218
288119
298020
308020
317921

Wind in January

Winds average 9 km/h in January.

Across January, daily wind ranges from about 8 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
29calm
39calm
49calm
59calm
69calm
79calm
89calm
99calm
109calm
119calm
129calm
139calm
149calm
158calm
168calm
178calm
188calm
198calm
208calm
218calm
228calm
238calm
248calm
258calm
268calm
278calm
288calm
298calm
308calm
318calm

Sunrise & sunset in January

DaylightNight

Daylight runs from about 12 h 06 min at the start of January to 12 hours by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 6 minutes over January. Sunrise moves from 6:12 AM to 6:22 AM, and sunset from 6:16 PM to 6:25 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
112.16:126:16
212.16:126:16
312.16:136:16
412.16:136:17
512.16:146:17
612.16:146:18
712.16:146:18
812.16:156:19
912.16:156:19
1012.16:166:19
1112.16:166:20
1212.16:166:20
1312.16:176:20
1412.16:176:21
1512.16:186:21
1612.16:186:22
1712.16:186:22
1812.16:196:22
1912.16:196:22
2012.16:196:23
2112.16:206:23
2212.16:206:23
2312.16:206:24
2412.16:216:24
2512.16:216:24
2612.16:216:24
2712.16:216:25
2812.16:226:25
2912.16:226:25
3012.06:226:25
3112.06:226:25

Solar energy in January

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in January, about 4.35 kWh/m².

For context, solar energy here swings from a low near 3.82 kWh/m² to a high of 6 kWh/m² in October across the year — January's 4.35 kWh/m² falls in the middle.

024151015202531
Solar energy (kWh/m²)Level
14.6Bright
24.6Bright
34.6Bright
44.5Bright
54.5Bright
64.5Bright
74.5Bright
84.5Bright
94.4Bright
104.4Bright
114.4Bright
124.4Bright
134.3Bright
144.3Bright
154.3Bright
164.3Bright
174.3Bright
184.3Bright
194.3Bright
204.3Bright
214.3Bright
224.3Bright
234.3Bright
244.2Bright
254.2Bright
264.2Bright
274.2Bright
284.2Bright
294.2Bright
304.2Bright
314.2Bright
Planning a trip in January

Hazard calendar for Igarapé-Açu

In seasonPeak

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

Igarapé-Açu's monsoon runs January–May, 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 Igarapé-Açu?

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

2.8
Sightseeing
8th-best month of the year
4.1
Beach & pool
8th-best month of the year

January is a weaker month for outdoor sightseeing in Igarapé-Açu.

What to pack for Igarapé-Açu in January

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

In January, Igarapé-Açu sees daytime highs around 31°C and nights near 23°C. Pack light clothes and rain gear. About 26 days see rain.

light clothesrain gear

Sea temperature near Igarapé-Açu in January

The nearest coast averages about 28°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 62 km away) is warmest in June at about 29°C and coldest in February near 28°C.

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

26°28°30°JanFebMarAprMayJunJulAugSepOctNovDecwarmtropicalcomfortable to swim
Sea temperature (°C)Comfort
Jan28Tropical
Feb28Tropical
Mar28Tropical
Apr28Tropical
May29Tropical
Jun29Tropical
Jul28Tropical
Aug28Tropical
Sep28Tropical
Oct28Tropical
Nov28Tropical
Dec28Tropical

UV index in Igarapé-Açu 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 Igarapé-Açu peaks around March 16 at about 15 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near July 18 at about 10 (extreme).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeMar 16UV 15Jul 18UV 10
UV index (midday)Level
Jan13Extreme
Feb14Extreme
Mar15Extreme
Apr14Extreme
May12Extreme
Jun11Extreme
Jul10Extreme
Aug11Extreme
Sep12Extreme
Oct12Extreme
Nov10Extreme
Dec11Extreme

Air quality in Igarapé-Açu 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 Igarapé-Açu is worst in November — around 21 µg/m³ PM2.5 (moderate), about 2.7× the cleanest month (July, 8 µg/m³).

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

0102030JanFebMarAprMayJunJulAugSepOctNovDecModerateGoodModerateNov 2020 µg/m³Jul 128 µg/m³
PM2.5 (µg/m³)Level
Jan17Moderate
Feb20Moderate
Mar20Moderate
Apr15Moderate
May10Good
Jun8Good
Jul8Good
Aug9Good
Sep11Good
Oct13Moderate
Nov21Moderate
Dec19Moderate
Location & terrain

Where is Igarapé-Açu?

Igarapé-Açu sits at 1.1°S, 47.6°W, 39 m above sea level, in Brazil. The nearest listed city is Santa Maria do Pará, 25 km away.

Topography around Igarapé-Açu

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

Within 3 km, the terrain around Igarapé-Açu has only modest variations in elevation — a maximum elevation change of 49 m around an average of 44 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 70 m; within 80 km, only modest variations in elevation — a maximum elevation change of 112 m.

The land around Igarapé-Açu is covered by trees (53%) and grassland (37%) within 3 km, trees (64%) and grassland (36%) within 16 km, and trees (58%) and grassland (21%) within 80 km.

3 km
49 m
16 km
70 m
80 km
112 m
treesgrasslandartificial surfaceswaterwetlandmangroves
January weather nearby: Santa Maria do Pará 25 km · Castanhal 39 km · Maracanã 44 km · Marapanim 47 km · Capanema 49 km · Curuçá 51 km · Santo Antônio do Tauá 57 km · São Miguel do Guamá 57 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 Igarapé-Açu (-1.1289°, -47.62°, elevation 39 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).