Balsas weather in May

In May, Balsas sees average daytime highs of 32°C and overnight lows near 23°C, with 40 mm of rain across 6.7 wet days and about 11.7 hours of daylight. It is the 6th-warmest and 8th-wettest month of the year here.

Day-to-day highs hold fairly steady near 32°C through the month. The sky is clear or mostly clear about 31% of the time in May, and the air most often feels oppressive.

Daylight stretches from about 11 h 42 min at the start of May to 11 h 36 min by month's end. Set against the rest of the year, May is Balsas's 6th-clearest and 5th-windiest month. For the whole year in context, see Balsas's year-round climate.

Daytime high
32°
6th warmest
Overnight low
23°
8th coldest
Rainfall
40 mm
6.7 wet days
Daylight
11 h 42 min
6:11 AM – 5:50 PM
Cloud cover
57%
6th clearest
Wind
7 km/h
5th windiest
Solar energy
5.14 kWh/m²
Travel score
4.1
out of 10

Temperature in May

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 32°C through the month.

A typical May day in Balsas reaches about 32°C in the afternoon and slips back to 23°C overnight — a 10°C spread between the day's warmth and the night's chill. On most days the high lands between 30°C and 34°C. Set against its neighbours, May runs about 1°C warmer than April and on par with June.

20°25°30°35°151015202531
Avg high (°C)Avg low (°C)
13222
23222
33223
43223
53223
63223
73223
83223
93223
103223
113223
123223
133223
143223
153223
163223
173223
183223
193223
203223
213223
223223
233323
243323
253323
263323
273323
283323
293323
303322
313322

How May really feels in Balsas

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.

Balsas weather by month

How May compares with the rest of the year at a glance. May is the 6th-warmest and 8th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan31° / 22°20424.612.43.0
Feb31° / 22°18022.112.23.0
Mar31° / 22°17823.512.13.1
Apr31° / 22°11015.511.83.6
May32° / 23°406.711.74.1
Jun33° / 22°20.511.64.5
Jul33° / 22°10.211.64.4
Aug35° / 22°10.211.83.6
Sep35° / 24°91.8122.9
Oct34° / 24°557.712.23.0
Nov32° / 23°12115.312.33.3
Dec31° / 23°15719.412.43.3

Cloud cover in May

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 31% of the time in May.

Beyond those clear spells, partly cloudy skies cover about 22% of May, with mostly cloudy or overcast conditions the remaining 47%. Skies tend to open up as the month goes on.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
14357
24357
34357
44456
54456
64555
74654
84654
94654
104852
114951
125050
135050
145149
155248
165248
175347
185347
195446
205545
215644
225743
235743
245941
255941
266139
276238
286436
296436
306634
316733

Chance of precipitation in May

Any precipitation

Balsas gets around 40 mm of rain over 6.7 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 21% and peaks near 36% on the wettest days. The odds ease toward the end of the month.

0%10%20%30%40%50%151015202531
Rain chance (%)
136
235
334
433
531
630
729
827
926
1025
1124
1223
1322
1421
1520
1620
1719
1819
1918
2018
2118
2217
2316
2416
2515
2614
2713
2812
2912
3010
319

Humidity in May

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, May lands in the oppressive band about 46% of days. Sticky, muggy-or-worse air turns up on roughly 91% of them.

0%25%50%75%100%151015202531
Humid (%)Muggy (%)Oppressive (%)
112673
212772
322969
423068
523266
633463
733562
833760
933958
1044155
1144353
1244551
1354649
1454847
1564946
1665044
1775043
1875241
1985240
2095239
21105337
22115336
23135334
24145432
25165331
26185329
27195427
28215425
29235423
30255322
31275419

Wind in May

Winds average 7 km/h in May.

Across May, daily wind ranges from about 7 km/h on the calmest days to 8 km/h at its breeziest. It stays fairly steady from day to day.

051015151015202531
Wind speed (km/h)Feels
17calm
27calm
37calm
47calm
57calm
67calm
77calm
87calm
97calm
107calm
117calm
127calm
137calm
147calm
157calm
167calm
177calm
188calm
198calm
208calm
218calm
228calm
238calm
248calm
258calm
268calm
278calm
288calm
298calm
308calm
318calm

Sunrise & sunset in May

DaylightNight

Daylight runs from about 11 h 42 min at the start of May to 11 h 36 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 6:09 AM to 6:14 AM, and sunset from 5:54 PM to 5:49 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
111.76:095:54
211.76:095:53
311.76:095:53
411.76:095:53
511.76:095:52
611.76:095:52
711.76:105:52
811.76:105:52
911.76:105:51
1011.76:105:51
1111.76:105:51
1211.76:105:51
1311.76:105:51
1411.76:105:50
1511.76:115:50
1611.76:115:50
1711.76:115:50
1811.66:115:50
1911.66:115:50
2011.66:115:50
2111.66:125:50
2211.66:125:50
2311.66:125:49
2411.66:125:49
2511.66:125:49
2611.66:125:49
2711.66:135:49
2811.66:135:49
2911.66:135:49
3011.66:135:49
3111.66:145:49

Solar energy in May

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in May, about 5.14 kWh/m².

For context, solar energy here swings from a low near 5.03 kWh/m² to a high of 6.61 kWh/m² in September across the year — May's 5.14 kWh/m² falls in the middle.

0246151015202531
Solar energy (kWh/m²)Level
15.1Bright
25.1Bright
35.1Bright
45.1Bright
55.1Bright
65.1Bright
75.1Bright
85.1Bright
95.1Bright
105.2Bright
115.2Bright
125.2Bright
135.2Bright
145.2Bright
155.2Bright
165.2Bright
175.1Bright
185.1Bright
195.1Bright
205.1Bright
215.1Bright
225.1Bright
235.1Bright
245.2Bright
255.2Bright
265.2Bright
275.2Bright
285.2Bright
295.2Bright
305.2Bright
315.2Bright
Planning a trip in May

Hazard calendar for Balsas

In seasonPeak

None of Balsas's seasonal hazards are active in May. The full-year calendar below shows when the rainy season, cyclone risk and dust haze do peak.

Balsas's monsoon runs November–April, 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 Balsas?

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

4.1
Sightseeing
3rd-best month of the year
6.8
Beach & pool
4th-best month of the year

May is a reasonable time to visit Balsas for sightseeing. The water and warmth also suit a beach or pool day.

What to pack for Balsas in May

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

In May, Balsas sees daytime highs around 32°C and nights near 23°C. Pack light clothes. Worth having: sun protection. About 7 days see rain.

light clothessun protection

UV index in Balsas in May

LowModerateHighVery highExtreme

Clear-sky midday UV in May peaks around 11 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Balsas peaks around February 20 at about 15 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near June 22 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 highExtremeFeb 20UV 15Jun 22UV 10
UV index (midday)Level
Jan14Extreme
Feb15Extreme
Mar15Extreme
Apr13Extreme
May11Extreme
Jun10Very high
Jul10Very high
Aug11Extreme
Sep13Extreme
Oct13Extreme
Nov12Extreme
Dec11Extreme

Air quality in Balsas 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 Balsas is worst in September — around 27 µg/m³ PM2.5 (moderate), about 4.3× the cleanest month (June, 6 µg/m³).

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

0102030JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateSep 2027 µg/m³Jun 166 µg/m³
PM2.5 (µg/m³)Level
Jan12Good
Feb11Good
Mar12Good
Apr12Good
May7Good
Jun6Good
Jul8Good
Aug18Moderate
Sep27Moderate
Oct25Moderate
Nov16Moderate
Dec13Moderate
Location & terrain

Where is Balsas?

Balsas sits at 7.5°S, 46.0°W, 254 m above sea level, in Brazil. The nearest listed city is Riachão, 67 km away.

Topography around Balsas

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

Within 3 km, the terrain around Balsas has only modest variations in elevation — a maximum elevation change of 62 m around an average of 259 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 107 m; within 80 km, significant variations in elevation — a maximum elevation change of 455 m.

The land around Balsas is covered by artificial surfaces (36%), grassland (32%) and trees (23%) within 3 km, grassland (38%), trees (30%) and shrubs (26%) within 16 km, and trees (32%), shrubs (28%) and grassland (25%) within 80 km.

3 km
62 m
16 km
107 m
80 km
455 m
treesshrubsgrasslandcroplandartificial surfacesbare terrain
May weather nearby: Riachão 67 km · São Raimundo das Mangabeiras 83 km · Formosa da Serra Negra 122 km · Carolina 159 km · Uruçuí 167 km · Estreito 189 km · Grajaú 191 km · Sítio Novo 198 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 Balsas (-7.5325°, -46.0356°, elevation 254 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).