Careiro weather in March

In March, Careiro sees average daytime highs of 30°C and overnight lows near 24°C, with 432 mm of rain across 29.4 wet days and about 12 hours of daylight. It is the 9th-warmest and 2nd-wettest month of the year here.

Day-to-day highs hold fairly steady near 30°C through the month. The sky is clear or mostly clear about 1% of the time in March, and the air most often feels miserable.

Daylight stretches from about 12 h 06 min at the start of March to 12 hours by month's end. Set against the rest of the year, March is Careiro's 12th-clearest and 2nd-windiest month. For the whole year in context, see Careiro's year-round climate.

Daytime high
30°
9th warmest
Overnight low
24°
9th coldest
Rainfall
432 mm
29.4 wet days
Daylight
12 hours
6:10 AM – 6:12 PM
Cloud cover
90%
12th clearest
Wind
5 km/h
2nd windiest
Solar energy
4.09 kWh/m²
Travel score
2.6
out of 10

Temperature in March

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 30°C through the month.

A typical March day in Careiro reaches about 30°C in the afternoon and slips back to 24°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, March runs on par with February and on par with April.

20°25°30°35°151015202531
Avg high (°C)Avg low (°C)
13023
23023
33023
43023
53023
63023
73023
83023
93023
103023
113024
123024
133024
143024
153024
163024
173024
183024
193024
203024
213024
223024
233024
243024
253024
263024
273024
283024
293024
303024
313024

How March really feels in Careiro

Once humidity and wind are folded in, March 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 March is heat — humidity pushes the afternoon "feels like" well above the raw temperature.

Careiro weather by month

How March compares with the rest of the year at a glance. March is the 9th-warmest and 2nd-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan30° / 23°35528.712.22.6
Feb30° / 23°35126.112.12.7
Mar30° / 24°43229.4122.6
Apr30° / 23°43728.811.92.6
May30° / 23°36329.311.82.6
Jun31° / 23°21323.611.83.1
Jul31° / 23°15221.511.83.4
Aug32° / 23°14519.211.93.1
Sep33° / 24°17521.1122.7
Oct32° / 24°18922.412.12.6
Nov32° / 24°22424.812.22.5
Dec31° / 24°32628.312.22.6

Cloud cover in March

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 1% of the time in March, the cloudiest month of the year.

Beyond those clear spells, partly cloudy skies cover about 3% of March, with mostly cloudy or overcast conditions the remaining 96%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
1397
2397
3397
4397
5397
6397
7397
8397
9397
10397
11397
12496
13496
14496
15496
16496
17496
18496
19496
20496
21595
22595
23595
24595
25595
26595
27595
28595
29595
30595
31595

Chance of precipitation in March

Any precipitation

Careiro gets around 432 mm of rain over 29.4 wet days in March. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 95% and peaks near 96% on the wettest days.

0%20%40%60%80%100%151015202531
Rain chance (%)
196
296
396
496
596
695
795
895
995
1095
1195
1295
1395
1495
1595
1695
1795
1895
1994
2094
2194
2294
2394
2494
2594
2694
2794
2894
2994
3094
3194

Humidity in March

DryComfortableHumidMuggyOppressiveMiserable

Most of March feels miserable — the stacked bands show each day's mix of comfort levels, read off the dew point.

By dew point, March lands in the miserable band about 65% of days. Sticky, muggy-or-worse air turns up on roughly 100% of them.

0%25%50%75%100%151015202531
Oppressive (%)Miserable (%)
14159
24159
34060
43961
53961
63862
73862
83862
93862
103862
113862
123862
133763
143763
153763
163664
173664
183664
193565
203565
213466
223466
233367
243367
253268
263169
273070
283070
292971
302872
312872

Wind in March

Winds average 5 km/h in March.

Across March, 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 March

DaylightNight

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

Days shrink by about 6 minutes over March. Sunrise moves from 6:12 AM to 6:07 AM, and sunset from 6:17 PM to 6:06 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
112.16:126:17
212.16:126:17
312.16:126:16
412.16:126:16
512.16:126:16
612.16:126:16
712.16:126:15
812.16:126:15
912.16:126:15
1012.06:116:14
1112.06:116:14
1212.06:116:13
1312.06:116:13
1412.06:116:13
1512.06:116:12
1612.06:106:12
1712.06:106:12
1812.06:106:11
1912.06:106:11
2012.06:106:10
2112.06:096:10
2212.06:096:09
2312.06:096:09
2412.06:096:09
2512.06:096:08
2612.06:086:08
2712.06:086:07
2812.06:086:07
2912.06:086:06
3012.06:076:06
3112.06:076:06

Solar energy in March

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in March, about 4.09 kWh/m².

For context, solar energy here swings from a low near 3.81 kWh/m² to a high of 5.4 kWh/m² in October across the year — March's 4.09 kWh/m² sits near the bottom.

012345151015202531
Solar energy (kWh/m²)Level
14.1Bright
24.1Bright
34.1Bright
44.1Bright
54.1Bright
64.1Bright
74.1Bright
84.1Bright
94.1Bright
104.1Bright
114.1Bright
124.1Bright
134.1Bright
144.1Bright
154.1Bright
164.1Bright
174.1Bright
184.1Bright
194.1Bright
204.1Bright
214.1Bright
224.1Bright
234.1Bright
244.1Bright
254.1Bright
264.1Bright
274.1Bright
284.1Bright
294.1Bright
304.1Bright
314.1Bright
Planning a trip in March

Is March a good time to visit Careiro?

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

2.6
Sightseeing
6th-best month of the year
3.6
Beach & pool
11th-best month of the year

March is a weaker month for outdoor sightseeing in Careiro.

What to pack for Careiro in March

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

In March, Careiro sees daytime highs around 30°C and nights near 24°C. Pack light clothes and rain gear. About 29 days see rain.

light clothesrain gear

UV index in Careiro in March

LowModerateHighVery highExtreme

Clear-sky midday UV in March peaks around 15 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Careiro peaks around March 12 at about 15 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near November 12 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 12UV 15Nov 12UV 10
UV index (midday)Level
Jan15Extreme
Feb15Extreme
Mar15Extreme
Apr14Extreme
May12Extreme
Jun10Very high
Jul10Extreme
Aug11Extreme
Sep11Extreme
Oct10Extreme
Nov10Very high
Dec12Extreme

Air quality in Careiro in March

GoodModeratePoorUnhealthyVery unhealthy

Average fine-particle pollution (PM2.5) through the year — so you can see where March falls, not just the annual average.

Air quality in Careiro is worst in September — around 36 µg/m³ PM2.5 (poor), about 3.2× the cleanest month (June, 11 µg/m³).

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

010203040JanFebMarAprMayJunJulAugSepOctNovDecModerateGoodModerateModerateSep 2035 µg/m³Jun 1111 µg/m³
PM2.5 (µg/m³)Level
Jan15Moderate
Feb15Moderate
Mar15Moderate
Apr15Moderate
May12Good
Jun11Good
Jul14Moderate
Aug27Moderate
Sep36Poor
Oct33Moderate
Nov25Moderate
Dec18Moderate
Location & terrain

Where is Careiro?

Careiro sits at 3.8°S, 60.4°W, 25 m above sea level, in Brazil. The nearest listed city is Manaquiri, 39 km away.

Topography around Careiro

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

Within 3 km, the terrain around Careiro has only modest variations in elevation — a maximum elevation change of 35 m around an average of 37 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 43 m; within 80 km, only modest variations in elevation — a maximum elevation change of 115 m.

The land around Careiro is covered by trees (96%) within 3 km, trees (88%) within 16 km, and trees (85%) within 80 km.

3 km
35 m
16 km
43 m
80 km
115 m
treesgrasslandwaterwetland
March weather nearby: Manaquiri 39 km · Iranduba 57 km · Manacapuru 59 km · Manaus 83 km · Careiro da Várzea 88 km · Borba 111 km · Beruri 112 km · Autazes 139 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 Careiro (-3.7681°, -60.3692°, elevation 25 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).