Porto Velho weather in March

In March, Porto Velho sees average daytime highs of 30°C and overnight lows near 24°C, with 328 mm of rain across 29.5 wet days and about 12.1 hours of daylight. It is the 10th-warmest and 1st-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 12 min at the start of March to 11 h 54 min by month's end. Set against the rest of the year, March is Porto Velho's 11th-clearest and 11th-windiest month. For the whole year in context, see Porto Velho's year-round climate.

Daytime high
30°
10th warmest
Overnight low
24°
10th coldest
Rainfall
328 mm
29.5 wet days
Daylight
12 h 06 min
6:23 AM – 6:27 PM
Cloud cover
89%
11th clearest
Wind
4 km/h
11th windiest
Solar energy
4.39 kWh/m²
Travel score
2.7
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 Porto Velho reaches about 30°C in the afternoon and slips back to 24°C overnight — a 6°C spread between the day's warmth and the night's chill. On most days the high lands between 28°C and 32°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)
13024
23024
33024
43024
53024
63024
73024
83024
93024
103024
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 Porto Velho

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.

Porto Velho weather by month

How March compares with the rest of the year at a glance. March is the 10th-warmest and 1st-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan30° / 24°30328.612.52.8
Feb30° / 24°31426.712.32.7
Mar30° / 24°32829.512.12.7
Apr30° / 24°22826.411.82.9
May30° / 23°13321.511.63.6
Jun31° / 23°449.511.54.9
Jul31° / 22°224.711.55.1
Aug33° / 23°427.611.73.9
Sep33° / 24°10316.711.93.1
Oct32° / 24°17823.312.22.7
Nov31° / 24°24626.312.42.7
Dec30° / 24°29828.712.52.7

Cloud cover in March

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 1% of the time in March.

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 (%)
1496
2496
3496
4496
5496
6496
7397
8496
9496
10496
11496
12397
13397
14397
15397
16397
17397
18397
19397
20397
21397
22397
23397
24397
25496
26496
27496
28595
29595
30595
31694

Chance of precipitation in March

Any precipitation

Porto Velho gets around 328 mm of rain over 29.5 wet days in March, the wettest month. 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 (%)
195
295
395
495
595
695
796
896
996
1096
1196
1296
1396
1496
1596
1696
1796
1896
1995
2095
2195
2295
2394
2494
2594
2693
2793
2893
2992
3092
3192

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 73% of days. Sticky, muggy-or-worse air turns up on roughly 100% of them.

0%25%50%75%100%151015202531
Oppressive (%)Miserable (%)
13565
23466
33367
43268
53169
63070
73070
82971
92971
102872
112872
122872
132773
142773
152773
162773
172674
182674
192674
202674
212674
222674
232575
242575
252476
262476
272377
282278
292179
302179
312080

Wind in March

Winds average 4 km/h in March.

Across March, daily wind ranges from about 4 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
64calm
74calm
84calm
94calm
104calm
114calm
124calm
134calm
144calm
154calm
164calm
174calm
184calm
194calm
204calm
214calm
224calm
234calm
244calm
254calm
264calm
274calm
284calm
294calm
304calm
314calm

Sunrise & sunset in March

DaylightNight

Daylight runs from about 12 h 12 min at the start of March to 11 h 54 min by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 18 minutes over March. Sunrise moves from 6:23 AM to 6:23 AM, and sunset from 6:34 PM to 6:19 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
112.26:236:34
212.26:236:34
312.26:246:33
412.26:246:33
512.16:246:33
612.16:246:32
712.16:246:32
812.16:246:31
912.16:246:31
1012.16:246:30
1112.16:246:30
1212.16:246:29
1312.16:246:29
1412.16:246:28
1512.16:246:28
1612.16:236:27
1712.16:236:27
1812.06:236:26
1912.06:236:25
2012.06:236:25
2112.06:236:24
2212.06:236:24
2312.06:236:23
2412.06:236:23
2512.06:236:22
2612.06:236:22
2712.06:236:21
2812.06:236:20
2912.06:236:20
3011.96:236:19
3111.96:236:19

Solar energy in March

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in March, about 4.39 kWh/m².

For context, solar energy here swings from a low near 4.21 kWh/m² to a high of 5.52 kWh/m² in September across the year — March's 4.39 kWh/m² sits near the bottom.

012345151015202531
Solar energy (kWh/m²)Level
14.4Bright
24.4Bright
34.4Bright
44.4Bright
54.4Bright
64.4Bright
74.4Bright
84.4Bright
94.4Bright
104.4Bright
114.4Bright
124.4Bright
134.4Bright
144.4Bright
154.4Bright
164.4Bright
174.4Bright
184.4Bright
194.4Bright
204.4Bright
214.4Bright
224.4Bright
234.4Bright
244.4Bright
254.3Bright
264.3Bright
274.3Bright
284.3Bright
294.3Bright
304.3Bright
314.3Bright
Planning a trip in March

Hazard calendar for Porto Velho

In seasonPeak

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

Porto Velho's rainy season runs October–April, when most of the year's rain falls.

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

Is March a good time to visit Porto Velho?

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

2.7
Sightseeing
8th-best month of the year
3.7
Beach & pool
11th-best month of the year

March is a weaker month for outdoor sightseeing in Porto Velho.

What to pack for Porto Velho in March

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

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

light clothesrain gear

UV index in Porto Velho 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 Porto Velho peaks around January 20 at about 15 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near September 11 at about 4 (moderate).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeVery highModerateExtremeJan 20UV 15Sep 11UV 4
UV index (midday)Level
Jan15Extreme
Feb15Extreme
Mar15Extreme
Apr13Extreme
May10Extreme
Jun9Very high
Jul9Very high
Aug5High
Sep4Moderate
Oct11Extreme
Nov13Extreme
Dec14Extreme

Air quality in Porto Velho 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 Porto Velho is worst in August — around 101 µg/m³ PM2.5 (unhealthy), about 9.5× the cleanest month (May, 11 µg/m³).

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

0306090120JanFebMarAprMayJunJulAugSepOctNovDecModerateGoodModerateUnhealthyModerateAug 24100 µg/m³May 1611 µg/m³
PM2.5 (µg/m³)Level
Jan13Moderate
Feb13Moderate
Mar15Moderate
Apr12Good
May11Good
Jun12Good
Jul34Moderate
Aug101Unhealthy
Sep100Unhealthy
Oct36Poor
Nov20Moderate
Dec15Moderate
Location & terrain

Where is Porto Velho?

Porto Velho sits at 8.8°S, 63.9°W, 90 m above sea level, in Brazil. The nearest listed city is Candeias do Jamari, 23 km away.

Topography around Porto Velho

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

Within 3 km, the terrain around Porto Velho has only modest variations in elevation — a maximum elevation change of 47 m around an average of 76 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 130 m; within 80 km, significant variations in elevation — a maximum elevation change of 342 m.

The land around Porto Velho is covered by artificial surfaces (54%) and trees (23%) within 3 km, trees (54%) and grassland (29%) within 16 km, and trees (75%) and grassland (20%) within 80 km.

3 km
47 m
16 km
130 m
80 km
342 m
treesgrasslandcroplandartificial surfaceswaterwetland
March weather nearby: Candeias do Jamari 23 km · Alto Paraíso 125 km · Ariquemes 159 km · Buritis 161 km · Humaitá 169 km · Lábrea 193 km · Machadinho d'Oeste 224 km · Nova Mamoré 240 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 Porto Velho (-8.7619°, -63.9039°, elevation 90 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).