Santa Helena de Goiás weather in May

In May, Santa Helena de Goiás sees average daytime highs of 29°C and overnight lows near 18°C, with 22 mm of rain across 3.7 wet days and about 11.2 hours of daylight. It is the 11th-warmest and 9th-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 53% of the time in May, and the air most often feels humid.

Daylight stretches from about 11 h 24 min at the start of May to 11 hours by month's end. Set against the rest of the year, May is Santa Helena de Goiás's 5th-clearest and 6th-windiest month. For the whole year in context, see Santa Helena de Goiás's year-round climate.

Daytime high
29°
11th warmest
Overnight low
18°
4th coldest
Rainfall
22 mm
3.7 wet days
Daylight
11 h 12 min
7:44 AM – 6:54 PM
Cloud cover
42%
5th clearest
Wind
7 km/h
6th windiest
Solar energy
4.68 kWh/m²
Travel score
6.4
out of 10

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 Santa Helena de Goiás reaches about 29°C in the afternoon and slips back to 18°C overnight — a 11°C spread between the day's warmth and the night's chill. On most days the high lands between 26°C and 32°C. Set against its neighbours, May runs about 1°C cooler than April and on par with June.

10°15°20°25°30°35°151015202531
Avg high (°C)Avg low (°C)
13019
23019
33019
43019
53019
63019
73018
83018
93018
102918
112918
122918
132918
142918
152918
162918
172918
182918
192918
202918
212918
222917
232917
242917
252917
262917
272917
282917
292917
302917
312917

How May really feels in Santa Helena de Goiás

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.

Santa Helena de Goiás weather by month

How May compares with the rest of the year at a glance. May is the 11th-warmest and 9th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan30° / 21°22222.712.93.5
Feb30° / 21°17220.712.63.4
Mar30° / 21°16821.112.13.6
Apr30° / 20°7110.711.64.9
May29° / 18°223.711.26.4
Jun29° / 17°71.1117.0
Jul29° / 16°40.6116.9
Aug32° / 18°91.311.45.5
Sep33° / 20°416.111.93.9
Oct33° / 21°11514.912.43.2
Nov31° / 21°18421.912.83.2
Dec30° / 21°22024.4133.2

Cloud cover in May

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 53% of the time in May.

Beyond those clear spells, partly cloudy skies cover about 15% of May, with mostly cloudy or overcast conditions the remaining 32%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
17426
27327
37327
47129
57129
67030
76931
86832
96634
106535
116535
126337
136337
146337
156337
166337
176337
186436
196436
206535
216634
226733
236832
246931
257030
267129
277228
287327
297426
307525
317624

Chance of precipitation in May

Any precipitation

Santa Helena de Goiás gets around 22 mm of rain over 3.7 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 12% and peaks near 14% on the wettest days.

0%10%20%30%151015202531
Rain chance (%)
112
212
311
411
510
610
711
811
911
1012
1112
1213
1313
1413
1514
1614
1714
1814
1914
2014
2114
2214
2313
2413
2512
2612
2711
2811
2910
3010
319

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 41% of days. Sticky, muggy-or-worse air turns up on roughly 19% of them.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)
152038342
262239322
362339301
472440281
572540261
682640251
782740241
882840231
992840220
1092941220
1192941210
1292941200
13102941200
14102941190
15102941190
16112941180
17122941180
18122842180
19132842170
20132842170
21142842160
22152842150
23152843150
24162843140
25162843130
26162843130
27162943120
28162943110
29173043110
30173142100
31173241100

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 7 km/h at its breeziest. It stays fairly steady from day to day.

0246810151015202531
Wind speed (km/h)Feels
17calm
27calm
37calm
47calm
57calm
67calm
77calm
87calm
97calm
107calm
117calm
127calm
137calm
147calm
157calm
167calm
177calm
187calm
197calm
207calm
217calm
227calm
237calm
247calm
257calm
267calm
277calm
287calm
297calm
307calm
317calm

Sunrise & sunset in May

DaylightNight

Daylight runs from about 11 h 24 min at the start of May to 11 hours by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 24 minutes over May. Sunrise moves from 7:39 AM to 7:49 AM, and sunset from 7:01 PM to 6:50 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
111.47:397:01
211.37:397:00
311.37:396:59
411.37:406:59
511.37:406:58
611.37:406:58
711.37:416:57
811.37:416:57
911.37:416:56
1011.27:426:56
1111.27:426:56
1211.27:426:55
1311.27:436:55
1411.27:436:54
1511.27:436:54
1611.27:446:54
1711.27:446:53
1811.17:446:53
1911.17:456:53
2011.17:456:52
2111.17:456:52
2211.17:466:52
2311.17:466:52
2411.17:476:51
2511.17:476:51
2611.17:476:51
2711.17:486:51
2811.07:486:51
2911.07:486:51
3011.07:496:50
3111.07:496:50

Solar energy in May

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in May, about 4.68 kWh/m².

For context, solar energy here swings from a low near 4.35 kWh/m² to a high of 6.16 kWh/m² in October across the year — May's 4.68 kWh/m² sits near the bottom.

0246151015202531
Solar energy (kWh/m²)Level
15.1Bright
25.0Bright
35.0Bright
45.0Bright
55.0Bright
64.9Bright
74.9Bright
84.9Bright
94.8Bright
104.8Bright
114.8Bright
124.7Bright
134.7Bright
144.7Bright
154.7Bright
164.6Bright
174.6Bright
184.6Bright
194.6Bright
204.5Bright
214.5Bright
224.5Bright
234.5Bright
244.5Bright
254.5Bright
264.5Bright
274.5Bright
284.5Bright
294.4Bright
304.4Bright
314.4Bright
Planning a trip in May

Hazard calendar for Santa Helena de Goiás

In seasonPeak

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

Santa Helena de Goiás's monsoon runs October–March, 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 Santa Helena de Goiás?

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

6.4
Sightseeing
3rd-best month of the year
8.2
Beach & pool
4th-best month of the year

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

What to pack for Santa Helena de Goiás in May

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

In May, Santa Helena de Goiás sees daytime highs around 29°C and nights near 18°C. Pack light clothes. Worth having: sun protection. About 4 days see rain.

light clothessun protection

UV index in Santa Helena de Goiás in May

LowModerateHighVery highExtreme

Clear-sky midday UV in May peaks around 9 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Santa Helena de Goiás peaks around January 24 at about 15 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near June 21 at about 7 (very high).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeVery highExtremeJan 24UV 15Jun 21UV 7
UV index (midday)Level
Jan15Extreme
Feb15Extreme
Mar14Extreme
Apr11Extreme
May9Very high
Jun7Very high
Jul8Very high
Aug9Very high
Sep11Extreme
Oct12Extreme
Nov13Extreme
Dec14Extreme

Air quality in Santa Helena de Goiás 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 Santa Helena de Goiás is worst in September — around 43 µg/m³ PM2.5 (poor), about 7.7× the cleanest month (November, 6 µg/m³).

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

0204060JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateModerateGoodSep 1640 µg/m³Nov 226 µg/m³
PM2.5 (µg/m³)Level
Jan8Good
Feb9Good
Mar8Good
Apr7Good
May7Good
Jun6Good
Jul8Good
Aug17Moderate
Sep43Poor
Oct15Moderate
Nov6Good
Dec7Good
Location & terrain

Where is Santa Helena de Goiás?

Santa Helena de Goiás sits at 17.8°S, 50.6°W, 566 m above sea level, in Brazil. The nearest listed city is Rio Verde, 35 km away.

Topography around Santa Helena de Goiás

How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Santa Helena de Goiás.

Within 3 km, the terrain around Santa Helena de Goiás has only modest variations in elevation — a maximum elevation change of 127 m around an average of 579 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 250 m; within 80 km, significant variations in elevation — a maximum elevation change of 523 m.

The land around Santa Helena de Goiás is covered by cropland (54%) and artificial surfaces (26%) within 3 km, cropland (82%) within 16 km, and cropland (71%) within 80 km.

3 km
127 m
16 km
250 m
80 km
523 m
treesgrasslandcroplandartificial surfaceswater
May weather nearby: Rio Verde 35 km · Acreúna 52 km · Quirinópolis 72 km · Indiara 99 km · Bom Jesus de Goiás 102 km · Jataí 119 km · Santa Vitória 125 km · Pontalina 126 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 Santa Helena de Goiás (-17.8136°, -50.5969°, elevation 566 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).