Santo Antônio weather in May

In May, Santo Antônio sees average daytime highs of 30°C and overnight lows near 23°C, with 62 mm of rain across 12.5 wet days and about 11.7 hours of daylight. It is the 8th-warmest and 3rd-wettest month of the year here.

Day-to-day highs hold fairly steady near 30°C through the month. The sky is clear or mostly clear about 34% of the time in May, and the air most often feels oppressive.

Daylight stretches from about 11 h 48 min at the start of May to 11 h 42 min by month's end. Set against the rest of the year, May is Santo Antônio's 8th-clearest and 8th-windiest month. For the whole year in context, see Santo Antônio's year-round climate.

Daytime high
30°
8th warmest
Overnight low
23°
6th coldest
Rainfall
62 mm
12.5 wet days
Daylight
11 h 42 min
5:27 AM – 5:10 PM
Cloud cover
55%
8th clearest
Wind
14 km/h
8th windiest
Solar energy
4.8 kWh/m²
Travel score
4.8
out of 10

Santo Antônio 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 30°C through the month.

A typical May day in Santo Antônio reaches about 30°C in the afternoon and slips back to 23°C overnight — a 7°C spread between the day's warmth and the night's chill. On most days the high lands between 28°C and 32°C. Set against its neighbours, May runs on par with April and about 1°C warmer than June.

20°25°30°35°151015202531
Avg high (°C)Avg low (°C)
13023
23023
33023
43023
53023
63023
73023
83023
93023
103023
113023
123023
133023
143023
153023
163023
173023
183023
193023
203023
213023
223023
233023
243023
253023
263023
273023
283023
293023
303023
313023

How May really feels in Santo Antônio

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.

Santo Antônio weather by month

How May compares with the rest of the year at a glance. May is the 8th-warmest and 3rd-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan31° / 24°4311.712.34.1
Feb31° / 24°5312.212.23.9
Mar31° / 24°7716.9123.7
Apr31° / 23°881611.94.0
May30° / 23°6212.511.74.8
Jun29° / 22°5411.611.65.4
Jul28° / 21°438.811.76.0
Aug29° / 21°164.811.86.2
Sep30° / 22°82.9126.0
Oct31° / 23°7212.15.5
Nov31° / 23°92.912.35.2
Dec32° / 24°186.812.44.7

Cloud cover in May

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 34% of the time in May.

Beyond those clear spells, partly cloudy skies cover about 27% of May, with mostly cloudy or overcast conditions the remaining 39%. Skies tend to open up as the month goes on.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
15248
25248
35347
45446
55545
65644
75743
85743
95842
105941
116040
126040
136040
146139
156139
166139
176238
186337
196337
206436
216436
226436
236436
246436
256436
266535
276535
286535
296535
306634
316634

Chance of precipitation in May

Any precipitation

Santo Antônio gets around 62 mm of rain over 12.5 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 40% and peaks near 47% on the wettest days. The odds ease toward the end of the month.

0%20%40%60%151015202531
Rain chance (%)
147
247
346
445
544
643
742
841
940
1039
1138
1238
1338
1438
1538
1638
1738
1839
1939
2039
2139
2240
2340
2440
2539
2639
2739
2839
2939
3039
3140

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 86% of days. Sticky, muggy-or-worse air turns up on roughly 100% of them.

0%25%50%75%100%151015202531
Muggy (%)Oppressive (%)Miserable (%)
16931
26931
37921
47921
58911
68911
79901
89901
910891
1010891
1110891
1211881
1311881
1412871
1512871
1612880
1713870
1813870
1913870
2014860
2114860
2215850
2316840
2416840
2517830
2618820
2719810
2820800
2921790
3022780
3123770

Wind in May

Winds average 14 km/h in May.

Across May, daily wind ranges from about 13 km/h on the calmest days to 14 km/h at its breeziest. It stays fairly steady from day to day.

05101520151015202531
Wind speed (km/h)Feels
113light breeze
213light breeze
313light breeze
413light breeze
513light breeze
613light breeze
713light breeze
813light breeze
913light breeze
1013light breeze
1113light breeze
1213light breeze
1313light breeze
1414light breeze
1514light breeze
1614light breeze
1714light breeze
1814light breeze
1914light breeze
2014light breeze
2114light breeze
2214light breeze
2314light breeze
2414light breeze
2514light breeze
2614light breeze
2714light breeze
2814light breeze
2914light breeze
3014light breeze
3114light breeze

Sunrise & sunset in May

DaylightNight

Daylight runs from about 11 h 48 min at the start of May to 11 h 42 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 5:26 AM to 5:29 AM, and sunset from 5:13 PM to 5:09 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
111.85:265:13
211.85:265:12
311.85:265:12
411.85:265:12
511.85:265:12
611.85:265:11
711.85:265:11
811.75:265:11
911.75:265:11
1011.75:265:10
1111.75:265:10
1211.75:265:10
1311.75:265:10
1411.75:275:10
1511.75:275:10
1611.75:275:10
1711.75:275:09
1811.75:275:09
1911.75:275:09
2011.75:275:09
2111.75:275:09
2211.75:285:09
2311.75:285:09
2411.75:285:09
2511.75:285:09
2611.75:285:09
2711.75:295:09
2811.75:295:09
2911.75:295:09
3011.75:295:09
3111.75:295:09

Solar energy in May

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in May, about 4.8 kWh/m².

For context, solar energy here swings from a low near 4.3 kWh/m² to a high of 6.26 kWh/m² in November across the year — May's 4.8 kWh/m² sits near the bottom.

024151015202531
Solar energy (kWh/m²)Level
14.9Bright
24.9Bright
34.9Bright
44.9Bright
54.9Bright
64.9Bright
74.9Bright
84.9Bright
94.9Bright
104.9Bright
114.9Bright
124.9Bright
134.9Bright
144.8Bright
154.8Bright
164.8Bright
174.8Bright
184.8Bright
194.8Bright
204.8Bright
214.7Bright
224.7Bright
234.7Bright
244.7Bright
254.7Bright
264.7Bright
274.6Bright
284.6Bright
294.6Bright
304.6Bright
314.5Bright
Planning a trip in May

Is May a good time to visit Santo Antônio?

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

4.8
Sightseeing
7th-best month of the year
6.5
Beach & pool
8th-best month of the year

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

What to pack for Santo Antônio in May

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

In May, Santo Antônio sees daytime highs around 30°C and nights near 23°C. Pack light clothes. Worth having: rain gear and sun protection. About 13 days see rain.

light clothesrain gearsun protection

Sea temperature near Santo Antônio in May

The nearest coast averages about 28°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 62 km away) is warmest in March at about 29°C and coldest in August near 26°C.

The water stays above 20°C all year — warm enough for a swim any month.

24°26°28°30°JanFebMarAprMayJunJulAugSepOctNovDecwarmtropicalcomfortable to swim
Sea temperature (°C)Comfort
Jan28Tropical
Feb28Tropical
Mar29Tropical
Apr29Tropical
May28Tropical
Jun27Warm
Jul27Warm
Aug26Warm
Sep26Warm
Oct27Warm
Nov27Warm
Dec28Warm

UV index in Santo Antônio 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 Santo Antônio peaks around March 12 at about 15 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near July 15 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 highExtremeMar 12UV 15Jul 15UV 10
UV index (midday)Level
Jan13Extreme
Feb15Extreme
Mar15Extreme
Apr14Extreme
May11Extreme
Jun10Very high
Jul10Very high
Aug10Extreme
Sep12Extreme
Oct12Extreme
Nov12Extreme
Dec12Extreme
Location & terrain

Where is Santo Antônio?

Santo Antônio sits at 6.3°S, 35.5°W, 93 m above sea level, in Brazil. The nearest listed city is Nova Cruz, 19 km away.

Topography around Santo Antônio

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

Within 3 km, the terrain around Santo Antônio has only modest variations in elevation — a maximum elevation change of 44 m around an average of 89 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 149 m; within 80 km, large variations in elevation — a maximum elevation change of 686 m.

The land around Santo Antônio is covered by grassland (88%) within 3 km, grassland (87%) within 16 km, and grassland (45%) and shrubs (26%) within 80 km.

3 km
44 m
16 km
149 m
80 km
686 m
treesshrubsgrasslandcroplandartificial surfaceswatermangroves
May weather nearby: Nova Cruz 19 km · Goianinha 30 km · Monte Alegre 31 km · São José de Mipibu 37 km · Nísia Floresta 39 km · Canguaretama 39 km · Araruna 40 km · Belém 43 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 Santo Antônio (-6.3106°, -35.4789°, elevation 93 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. Topography is sampled from the Copernicus DEM GLO-90 elevation model (© ESA/Airbus) and ESA WorldCover 2021 land cover (CC BY 4.0).