São João de Pirabas weather in May

In May, São João de Pirabas sees average daytime highs of 29°C and overnight lows near 24°C, with 315 mm of rain across 28.5 wet days and about 12 hours of daylight. It is the 8th-warmest and 4th-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 13% of the time in May, and the air most often feels miserable.

Daylight stretches from about 12 hours at the start of May to 12 hours by month's end. Set against the rest of the year, May is São João de Pirabas's 8th-clearest and 11th-windiest month. For the whole year in context, see São João de Pirabas's year-round climate.

Daytime high
29°
8th warmest
Overnight low
24°
7th coldest
Rainfall
315 mm
28.5 wet days
Daylight
12 hours
6:06 AM – 6:04 PM
Cloud cover
74%
8th clearest
Wind
10 km/h
11th windiest
Solar energy
4.45 kWh/m²
Travel score
3.2
out of 10

São João de Pirabas is human settlement in 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 São João de Pirabas reaches about 29°C in the afternoon and slips back to 24°C overnight — a 5°C spread between the day's warmth and the night's chill. On most days the high lands between 28°C and 30°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
132925
142925
152925
162925
172925
182925
192925
202925
212925
222925
232925
242925
252925
262925
272924
282924
292924
302924
312924

How May really feels in São João de Pirabas

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.

São João de Pirabas weather by month

How May compares with the rest of the year at a glance. May 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
Jan29° / 24°29628.6123.2
Feb28° / 24°40427.3123.1
Mar28° / 24°51030.6123.0
Apr28° / 24°45929.5123.0
May29° / 24°31528.5123.2
Jun29° / 24°14725.6123.5
Jul29° / 24°10122.8124.0
Aug29° / 25°4015.5124.9
Sep30° / 25°186.3125.9
Oct30° / 25°144.4125.9
Nov30° / 25°257.4125.4
Dec30° / 25°9918.4124.2

Cloud cover in May

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 13% of the time in May.

Beyond those clear spells, partly cloudy skies cover about 16% of May, with mostly cloudy or overcast conditions the remaining 71%. Skies tend to open up as the month goes on.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
11288
21387
31486
41585
51684
61882
71882
82080
92179
102278
112476
122575
132674
142872
152872
163070
173169
183367
193367
203367
213565
223565
233664
243763
253862
263961
274060
284159
294258
304357
314555

Chance of precipitation in May

Any precipitation

São João de Pirabas gets around 315 mm of rain over 28.5 wet days in May. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 92% and peaks near 97% on the wettest days. The odds ease toward the end of the month.

0%20%40%60%80%100%151015202531
Rain chance (%)
197
297
397
496
596
696
795
895
995
1094
1194
1294
1393
1493
1592
1692
1791
1891
1990
2090
2189
2289
2388
2488
2587
2687
2787
2886
2986
3086
3186

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 90% of days. Sticky, muggy-or-worse air turns up on roughly 100% of them.

0%25%50%75%100%151015202531
Oppressive (%)Miserable (%)
11090
21090
31090
41090
51090
6991
7991
8991
9991
10991
11892
12892
13892
14892
15892
16892
17991
18991
19991
201090
211090
221189
231189
241189
251288
261288
271387
281387
291387
301387
311486

Wind in May

Winds average 10 km/h in May.

Across May, daily wind ranges from about 9 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
19calm
29calm
39calm
49calm
59calm
69calm
79calm
89calm
99calm
109calm
1110calm
1210calm
1310calm
1410calm
1510calm
1610calm
1710calm
1810calm
1910calm
2010calm
2110calm
2210calm
2310calm
2410calm
2510calm
2610calm
2710calm
2810calm
2910calm
3010calm
3110calm

Sunrise & sunset in May

DaylightNight

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

Days grow by about 0 minutes over May. Sunrise moves from 6:07 AM to 6:07 AM, and sunset from 6:05 PM to 6:05 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
112.06:076:05
212.06:076:05
312.06:066:05
412.06:066:05
512.06:066:05
612.06:066:04
712.06:066:04
812.06:066:04
912.06:066:04
1012.06:066:04
1112.06:066:04
1212.06:066:04
1312.06:066:04
1412.06:066:04
1512.06:066:04
1612.06:066:04
1712.06:066:04
1812.06:066:04
1912.06:066:04
2012.06:066:04
2112.06:066:04
2212.06:066:04
2312.06:066:04
2412.06:066:04
2512.06:076:04
2612.06:076:04
2712.06:076:04
2812.06:076:05
2912.06:076:05
3012.06:076:05
3112.06:076:05

Solar energy in May

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in May, about 4.45 kWh/m².

For context, solar energy here swings from a low near 4.09 kWh/m² to a high of 6.33 kWh/m² in October across the year — May's 4.45 kWh/m² falls in the middle.

024151015202531
Solar energy (kWh/m²)Level
14.2Bright
24.2Bright
34.2Bright
44.2Bright
54.2Bright
64.3Bright
74.3Bright
84.3Bright
94.3Bright
104.3Bright
114.4Bright
124.4Bright
134.4Bright
144.4Bright
154.5Bright
164.5Bright
174.5Bright
184.5Bright
194.5Bright
204.6Bright
214.6Bright
224.6Bright
234.6Bright
244.6Bright
254.7Bright
264.7Bright
274.7Bright
284.7Bright
294.7Bright
304.7Bright
314.8Bright
Planning a trip in May

Hazard calendar for São João de Pirabas

In seasonPeak

In May, São João de Pirabas sits inside its monsoon season. The full year is below, with each hazard's peak months called out.

São João de Pirabas'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 May a good time to visit São João de Pirabas?

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

3.2
Sightseeing
8th-best month of the year
4.1
Beach & pool
8th-best month of the year

May is a weaker month for outdoor sightseeing in São João de Pirabas.

What to pack for São João de Pirabas in May

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

In May, São João de Pirabas sees daytime highs around 29°C and nights near 24°C. Pack light clothes and rain gear. About 29 days see rain.

light clothesrain gear

Sea temperature near São João de Pirabas in May

The nearest coast averages about 29°C in May — the other half of the beach question. The full-year curve and swim-comfort zones are below.

The sea at the nearest coast (about 18 km away) is warmest in June at about 29°C and coldest in September 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
Sep28Warm
Oct28Tropical
Nov28Tropical
Dec28Tropical

UV index in São João de Pirabas 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 São João de Pirabas 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
Nov11Extreme
Dec11Extreme

Air quality in São João de Pirabas 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 São João de Pirabas is worst in February — around 22 µg/m³ PM2.5 (moderate), about 3.2× the cleanest month (July, 7 µg/m³).

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

0102030JanFebMarAprMayJunJulAugSepOctNovDecModerateGoodModerateFeb 2022 µg/m³Jul 127 µg/m³
PM2.5 (µg/m³)Level
Jan18Moderate
Feb22Moderate
Mar21Moderate
Apr16Moderate
May9Good
Jun7Good
Jul7Good
Aug8Good
Sep10Good
Oct11Good
Nov13Moderate
Dec15Moderate
Location & terrain

Where is São João de Pirabas?

São João de Pirabas sits at 0.8°S, 47.2°W, 26 m above sea level, in Brazil. The nearest listed city is Salinópolis, 26 km away.

Topography around São João de Pirabas

How much the land rises and falls, and what covers it, within 3, 16 and 80 km of São João de Pirabas.

Within 3 km, the terrain around São João de Pirabas has only modest variations in elevation — a maximum elevation change of 31 m around an average of 9 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 58 m; within 80 km, only modest variations in elevation — a maximum elevation change of 111 m.

The land around São João de Pirabas is covered by mangroves (37%), water (30%) and trees (23%) within 3 km, trees (39%), water (26%) and mangroves (26%) within 16 km, and trees (37%) and water (37%) within 80 km.

3 km
31 m
16 km
58 m
80 km
111 m
treesgrasslandartificial surfaceswaterwetlandmangroves
May weather nearby: Salinópolis 26 km · Maracanã 31 km · Tracuateua 45 km · Capanema 47 km · Bragança 55 km · Marapanim 58 km · Igarapé-Açu 63 km · Augusto Corrêa 66 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 São João de Pirabas (-0.7747°, -47.1772°, elevation 26 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).