Barcelos weather in May

In May, Barcelos sees average daytime highs of 29°C and overnight lows near 24°C, with 392 mm of rain across 29.6 wet days and about 12 hours of daylight. It is the 12th-warmest and 1st-wettest month of the year here.

Day-to-day highs hold fairly steady near 29°C through the month. The sky is clear or mostly clear about 2% of the time in May, and the air most often feels miserable.

Daylight stretches from about 12 hours at the start of May to 11 h 54 min by month's end. Set against the rest of the year, May is Barcelos's 11th-clearest and 7th-windiest month. For the whole year in context, see Barcelos's year-round climate.

Daytime high
29°
12th warmest
Overnight low
24°
4th coldest
Rainfall
392 mm
29.6 wet days
Daylight
12 hours
6:09 AM – 6:07 PM
Cloud cover
88%
11th clearest
Wind
5 km/h
7th windiest
Solar energy
3.48 kWh/m²
Travel score
2.8
out of 10

Barcelos is locality in Amazonas, Brazil.

Air quality: WHO Ambient Air Quality Database. Density & description: Wikidata (CC0), GeoNames.

Temperature in May

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 29°C through the month.

A typical May day in Barcelos reaches about 29°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 27°C and 31°C. Set against its neighbours, May runs on par with April and on par with June.

20°25°30°35°151015202531
Avg high (°C)Avg low (°C)
12924
22924
32924
42924
52924
62924
72924
82924
92924
102924
112924
122924
132924
142924
152924
162924
172924
182924
192924
202924
212924
222924
232924
242924
252924
262923
272923
282923
292923
302923
312923

How May really feels in Barcelos

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

Barcelos weather by month

How May compares with the rest of the year at a glance. May is the 12th-warmest and 1st-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan31° / 24°20622.312.13.2
Feb31° / 24°19219.6123.3
Mar30° / 24°27524.7123.1
Apr30° / 24°35027.4122.8
May29° / 24°39229.6122.8
Jun29° / 23°28427.811.92.9
Jul30° / 23°21326.711.93.1
Aug31° / 23°15123.4123.1
Sep32° / 24°15621.8123.0
Oct32° / 24°15622.5122.9
Nov31° / 24°17822.4122.9
Dec31° / 24°21125.812.12.9

Cloud cover in May

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 2% of the time in May.

Beyond those clear spells, partly cloudy skies cover about 6% of May, with mostly cloudy or overcast conditions the remaining 92%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
1595
2595
3595
4595
5595
6694
7694
8694
9694
10694
11793
12793
13793
14793
15793
16793
17892
18991
19991
20991
21991
22991
23991
241090
251090
261090
271090
281189
291189
301189
311189

Chance of precipitation in May

Any precipitation

Barcelos gets around 392 mm of rain over 29.6 wet days in May, 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
596
696
796
896
996
1096
1196
1296
1396
1496
1596
1695
1795
1895
1995
2095
2195
2295
2395
2494
2594
2694
2794
2894
2994
3094
3194

Humidity in May

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, May lands in the miserable band about 72% of days. Sticky, muggy-or-worse air turns up on roughly 100% of them.

0%25%50%75%100%151015202531
Oppressive (%)Miserable (%)
12476
22476
32575
42575
52575
62674
72674
82674
92674
102674
112674
122773
132773
142773
152773
162773
172674
182674
192773
202773
212773
222872
232872
242971
252971
263070
273169
283268
293268
303367
313466

Wind in May

Winds average 5 km/h in May.

Across May, 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
65calm
75calm
85calm
95calm
105calm
115calm
125calm
135calm
145calm
155calm
165calm
175calm
185calm
194calm
204calm
214calm
224calm
234calm
244calm
254calm
264calm
274calm
284calm
294calm
304calm
314calm

Sunrise & sunset in May

DaylightNight

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

Days shrink by about 6 minutes over May. Sunrise moves from 6:10 AM to 6:11 AM, and sunset from 6:08 PM to 6:08 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
112.06:106:08
212.06:106:08
312.06:106:08
412.06:106:07
512.06:106:07
612.06:096:07
712.06:096:07
812.06:096:07
912.06:096:07
1012.06:096:07
1112.06:096:07
1212.06:096:07
1312.06:096:07
1412.06:096:07
1512.06:096:07
1612.06:096:07
1712.06:096:07
1812.06:096:07
1912.06:096:07
2012.06:096:07
2112.06:106:07
2212.06:106:07
2312.06:106:07
2412.06:106:07
2512.06:106:07
2612.06:106:07
2712.06:106:07
2811.96:106:07
2911.96:106:07
3011.96:116:07
3111.96:116:08

Solar energy in May

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in May, about 3.48 kWh/m² — the year's lowest.

For context, solar energy here swings from a low near 3.48 kWh/m² to a high of 5.15 kWh/m² in October across the year — May's 3.48 kWh/m² sits near the bottom.

01234151015202531
Solar energy (kWh/m²)Level
13.5Moderate
23.5Moderate
33.5Moderate
43.5Moderate
53.5Moderate
63.5Moderate
73.5Moderate
83.5Moderate
93.5Moderate
103.5Moderate
113.5Moderate
123.5Moderate
133.5Moderate
143.5Moderate
153.5Moderate
163.5Moderate
173.5Moderate
183.5Moderate
193.5Moderate
203.5Moderate
213.5Moderate
223.5Moderate
233.5Moderate
243.5Moderate
253.5Moderate
263.5Moderate
273.5Moderate
283.5Moderate
293.5Moderate
303.5Moderate
313.5Moderate
Planning a trip in May

Is May a good time to visit Barcelos?

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

2.8
Sightseeing
11th-best month of the year
3.7
Beach & pool
12th-best month of the year

May is a weaker month for outdoor sightseeing in Barcelos.

What to pack for Barcelos in May

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

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

light clothesrain gear

UV index in Barcelos in May

LowModerateHighVery highExtreme

Clear-sky midday UV in May peaks around 12 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Barcelos peaks around March 15 at about 15 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near July 12 at about 10 (extreme).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeMar 15UV 15Jul 12UV 10
UV index (midday)Level
Jan14Extreme
Feb14Extreme
Mar15Extreme
Apr14Extreme
May12Extreme
Jun11Extreme
Jul10Extreme
Aug11Extreme
Sep12Extreme
Oct12Extreme
Nov11Extreme
Dec12Extreme

Air quality in Barcelos in May

GoodModeratePoorUnhealthyVery unhealthy

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

Air quality in Barcelos is worst in March — around 19 µg/m³ PM2.5 (moderate), about 1.9× the cleanest month (June, 10 µg/m³).

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

0102030JanFebMarAprMayJunJulAugSepOctNovDecModerateGoodModerateMar 1518 µg/m³Jun 1910 µg/m³
PM2.5 (µg/m³)Level
Jan14Moderate
Feb17Moderate
Mar19Moderate
Apr16Moderate
May11Good
Jun10Good
Jul10Good
Aug14Moderate
Sep13Moderate
Oct15Moderate
Nov15Moderate
Dec13Moderate
Location & terrain

Where is Barcelos?

Barcelos sits at 1.0°S, 62.9°W, 35 m above sea level, in Brazil. The nearest listed city is Novo Airão, 287 km away.

Novo AirãoMaraãAlvarãesUariniTeféCodajásAnoriPresidente Figueiredo

Topography around Barcelos

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

Within 3 km, the terrain around Barcelos has only modest variations in elevation — a maximum elevation change of 37 m around an average of 34 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 44 m; within 80 km, only modest variations in elevation — a maximum elevation change of 50 m.

The land around Barcelos is covered by trees (66%) and water (21%) within 3 km, trees (79%) within 16 km, and trees (90%) within 80 km.

3 km
37 m
16 km
44 m
80 km
50 m
treesgrasslandartificial surfaceswaterwetland
May weather nearby: Novo Airão 287 km · Maraã 310 km · Alvarães 325 km · Uarini 330 km · Tefé 333 km · Codajás 333 km · Anori 342 km · Presidente Figueiredo 343 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 Barcelos (-0.9736°, -62.9269°, elevation 35 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).