Bastos weather in May

In May, Bastos sees average daytime highs of 27°C and overnight lows near 16°C, with 61 mm of rain across 6.3 wet days and about 11 hours of daylight. It is the 10th-warmest and 9th-wettest month of the year here.

Highs ease over the month, from about 28°C in the first days to 26°C by the end. The sky is clear or mostly clear about 48% of the time in May, and the air most often feels humid.

Daylight stretches from about 11 h 12 min at the start of May to 10 h 48 min by month's end. Set against the rest of the year, May is Bastos's 6th-clearest and 7th-windiest month. For the whole year in context, see Bastos's year-round climate.

Daytime high
27°
10th warmest
Overnight low
16°
4th coldest
Rainfall
61 mm
6.3 wet days
Daylight
11 hours
7:51 AM – 6:48 PM
Cloud cover
47%
6th clearest
Wind
9 km/h
7th windiest
Solar energy
4.07 kWh/m²
Travel score
7.3
out of 10

Bastos 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

Highs ease over the month, from about 28°C in the first days to 26°C by the end.

A typical May day in Bastos reaches about 27°C in the afternoon and slips back to 16°C overnight — a 10°C spread between the day's warmth and the night's chill. On most days the high lands between 22°C and 30°C. Set against its neighbours, May runs about 3°C cooler than April and on par with June.

10°15°20°25°30°35°151015202531
Avg high (°C)Avg low (°C)
12818
22818
32817
42817
52817
62717
72717
82717
92717
102717
112717
122717
132717
142716
152616
162616
172616
182616
192616
202616
212616
222616
232616
242616
252616
262616
272616
282616
292616
302616
312616

How May really feels in Bastos

Once humidity and wind are folded in, May averages 0 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
0
heat index over the day's high
Days feeling ≤ C
0
wind chill below the day's low

May sits comfortably in between — no days that feel dangerously hot or drop to a hard freeze once humidity and wind are folded in.

Bastos weather by month

How May compares with the rest of the year at a glance. May is the 10th-warmest and 9th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan30° / 22°23321.713.23.5
Feb30° / 22°18119.112.83.6
Mar30° / 21°13517.112.24.2
Apr29° / 19°647.911.55.7
May27° / 16°616.3117.3
Jun26° / 15°424.710.77.8
Jul27° / 15°263.610.88.0
Aug29° / 16°313.611.26.9
Sep30° / 18°767.711.95.4
Oct31° / 20°12012.512.54.4
Nov31° / 20°13614.4134.1
Dec31° / 21°18119.413.33.6

Cloud cover in May

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 48% of the time in May.

Beyond those clear spells, partly cloudy skies cover about 13% of May, with mostly cloudy or overcast conditions the remaining 39%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
16634
26733
36634
46634
56535
66337
76238
86139
96040
106040
115941
125941
135941
145842
155842
165842
175842
185842
195842
205941
215941
226040
236040
246040
256040
266040
276040
286040
296139
306139
316139

Chance of precipitation in May

Any precipitation

Bastos gets around 61 mm of rain over 6.3 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 20% and peaks near 24% on the wettest days. The odds climb toward the end of the month.

0%10%20%30%151015202531
Rain chance (%)
116
216
316
416
516
616
716
817
917
1017
1118
1219
1319
1420
1521
1621
1722
1823
1923
2024
2124
2224
2324
2424
2524
2624
2724
2824
2923
3023
3122

Humidity in May

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, May lands in the humid band about 34% of days. Sticky, muggy-or-worse air turns up on roughly 13% of them.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)
1122737221
2132838211
3142838191
4152938181
5162938170
6163038160
7173038150
8173037150
9183137140
10183137130
11193236130
12193236120
13203335120
14203335120
15203434110
16213434110
17213533110
18223532110
19223532110
20233531110
21233431110
22243430110
23253330110
24263330110
25263231110
26273231110
27273131110
28273131110
29273032110
30283032110
31283032110

Wind in May

Winds average 9 km/h in May.

Across May, daily wind ranges from about 9 km/h on the calmest days to 9 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
119calm
129calm
139calm
149calm
159calm
169calm
179calm
189calm
199calm
209calm
219calm
229calm
239calm
249calm
259calm
269calm
279calm
289calm
299calm
309calm
319calm

Sunrise & sunset in May

DaylightNight

Daylight runs from about 11 h 12 min at the start of May to 10 h 48 min by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 24 minutes over May. Sunrise moves from 7:44 AM to 7:57 AM, and sunset from 6:56 PM to 6:43 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
111.27:446:56
211.27:446:56
311.27:456:55
411.17:456:54
511.17:466:54
611.17:466:53
711.17:476:52
811.17:476:52
911.17:476:51
1011.07:486:51
1111.07:486:50
1211.07:496:50
1311.07:496:49
1411.07:506:49
1511.07:506:48
1611.07:516:48
1710.97:516:47
1810.97:516:47
1910.97:526:47
2010.97:526:46
2110.97:536:46
2210.97:536:46
2310.97:546:45
2410.87:546:45
2510.87:556:45
2610.87:556:44
2710.87:556:44
2810.87:566:44
2910.87:566:44
3010.87:576:44
3110.87:576:43

Solar energy in May

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in May, about 4.07 kWh/m².

For context, solar energy here swings from a low near 3.67 kWh/m² to a high of 6.14 kWh/m² in November across the year — May's 4.07 kWh/m² sits near the bottom.

024151015202531
Solar energy (kWh/m²)Level
14.6Bright
24.5Bright
34.5Bright
44.5Bright
54.4Bright
64.4Bright
74.4Bright
84.3Bright
94.3Bright
104.2Bright
114.2Bright
124.2Bright
134.1Bright
144.1Bright
154.1Bright
164.0Bright
174.0Bright
184.0Moderate
193.9Moderate
203.9Moderate
213.9Moderate
223.9Moderate
233.8Moderate
243.8Moderate
253.8Moderate
263.8Moderate
273.8Moderate
283.8Moderate
293.8Moderate
303.7Moderate
313.7Moderate
Planning a trip in May

Hazard calendar for Bastos

In seasonPeak

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

Bastos's rainy season runs October–March, when most of the year's rain falls.

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

Is May a good time to visit Bastos?

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

7.3
Sightseeing
3rd-best month of the year
7.3
Beach & pool
6th-best month of the year

May is one of the better times to visit Bastos for general sightseeing. The water and warmth also suit a beach or pool day.

What to pack for Bastos in May

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

In May, Bastos sees daytime highs around 27°C and nights near 16°C. Worth packing: light clothes. About 6 days see rain.

light clothes

UV index in Bastos in May

LowModerateHighVery highExtreme

Clear-sky midday UV in May peaks around 7 — enough to warrant sun protection. The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Bastos peaks around January 20 at about 15 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near July 12 at about 6 (high).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeVery highHighVery highExtremeJan 20UV 15Jul 12UV 6
UV index (midday)Level
Jan15Extreme
Feb15Extreme
Mar13Extreme
Apr10Very high
May7Very high
Jun6High
Jul6High
Aug8Very high
Sep8Very high
Oct11Extreme
Nov13Extreme
Dec14Extreme

Air quality in Bastos 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 Bastos is worst in September — around 19 µg/m³ PM2.5 (moderate), about 2.8× the cleanest month (November, 7 µg/m³).

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

01020JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateGoodSep 1718 µg/m³Nov 237 µg/m³
PM2.5 (µg/m³)Level
Jan8Good
Feb8Good
Mar7Good
Apr8Good
May9Good
Jun8Good
Jul8Good
Aug12Good
Sep19Moderate
Oct13Moderate
Nov7Good
Dec7Good
Location & terrain

Where is Bastos?

Bastos sits at 21.9°S, 50.7°W, 460 m above sea level, in Brazil. The nearest listed city is Osvaldo Cruz, 20 km away.

Topography around Bastos

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

Within 3 km, the terrain around Bastos has only modest variations in elevation — a maximum elevation change of 126 m around an average of 456 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 211 m; within 80 km, significant variations in elevation — a maximum elevation change of 417 m.

The land around Bastos is covered by cropland (33%), grassland (29%) and trees (21%) within 3 km, cropland (55%) and grassland (28%) within 16 km, and cropland (53%) and grassland (33%) within 80 km.

3 km
126 m
16 km
211 m
80 km
417 m
treesgrasslandcroplandartificial surfacesbare terrain
May weather nearby: Osvaldo Cruz 20 km · Tupã 23 km · Lucélia 37 km · Rancharia 38 km · Adamantina 44 km · Martinópolis 51 km · Paraguaçu Paulista 57 km · Pompéia 62 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 Bastos (-21.9219°, -50.7339°, elevation 460 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).