São João Batista weather in May

In May, São João Batista sees average daytime highs of 31°C and overnight lows near 25°C, with 230 mm of rain across 24.7 wet days and about 11.9 hours of daylight. It is the 8th-warmest and 4th-wettest month of the year here.

Day-to-day highs hold fairly steady near 31°C through the month. The sky is clear or mostly clear about 11% of the time in May, and the air most often feels miserable.

Daylight stretches from about 11 h 54 min at the start of May to 11 h 48 min by month's end. Set against the rest of the year, May is São João Batista's 8th-clearest and 11th-windiest month. For the whole year in context, see São João Batista's year-round climate.

Daytime high
31°
8th warmest
Overnight low
25°
8th coldest
Rainfall
230 mm
24.7 wet days
Daylight
11 h 54 min
5:59 AM – 5:51 PM
Cloud cover
71%
8th clearest
Wind
8 km/h
11th windiest
Solar energy
4.53 kWh/m²
Travel score
3.0
out of 10

São João Batista 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 31°C through the month.

A typical May day in São João Batista reaches about 31°C in the afternoon and slips back to 25°C overnight — a 6°C spread between the day's warmth and the night's chill. On most days the high lands between 29°C and 32°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)
13125
23125
33125
43125
53125
63125
73125
83125
93125
103125
113125
123125
133125
143125
153125
163125
173125
183125
193125
203125
213125
223125
233125
243125
253125
263125
273125
283125
293125
303125
313125

How May really feels in São João Batista

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 Batista 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
Jan31° / 25°20724.812.22.8
Feb31° / 25°2722612.12.6
Mar30° / 25°36030.1122.5
Apr31° / 25°36928.711.92.5
May31° / 25°23024.711.93.0
Jun31° / 25°9716.811.83.9
Jul31° / 24°6111.711.84.4
Aug32° / 25°184.611.94.5
Sep33° / 25°102.2124.1
Oct33° / 25°183.412.13.9
Nov33° / 26°346.412.13.8
Dec32° / 25°8214.112.23.4

Cloud cover in May

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 11% of the time in May.

Beyond those clear spells, partly cloudy skies cover about 21% of May, with mostly cloudy or overcast conditions the remaining 67%. Skies tend to open up as the month goes on.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
11684
21783
31783
41981
52080
62179
72278
82377
92575
102674
112773
122872
133070
143169
153268
163466
173565
183664
193763
203862
213961
224060
234060
244258
254357
264456
274555
284555
294654
304852
314951

Chance of precipitation in May

Any precipitation

São João Batista gets around 230 mm of rain over 24.7 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 80% and peaks near 89% on the wettest days. The odds ease toward the end of the month.

0%20%40%60%80%100%151015202531
Rain chance (%)
189
289
388
487
586
686
785
884
983
1083
1182
1281
1381
1481
1580
1680
1780
1879
1979
2079
2178
2278
2377
2476
2575
2674
2773
2872
2971
3069
3168

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 82% of days. Sticky, muggy-or-worse air turns up on roughly 100% of them.

0%25%50%75%100%151015202531
Oppressive (%)Miserable (%)
12278
22179
32179
42080
52080
61981
71981
81882
91783
101684
111684
121585
131585
141585
151585
161585
171585
181585
191684
201684
211783
221783
231882
241882
251981
262080
272080
282179
292278
302377
312476

Wind in May

Winds average 8 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.

0246810151015202531
Wind speed (km/h)Feels
17calm
27calm
37calm
47calm
57calm
67calm
78calm
88calm
98calm
108calm
118calm
128calm
138calm
148calm
158calm
168calm
178calm
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 54 min at the start of May to 11 h 48 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 5:59 AM to 6:01 AM, and sunset from 5:53 PM to 5:52 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
111.95:595:53
211.95:595:53
311.95:595:53
411.95:595:53
511.95:595:53
611.95:595:52
711.95:595:52
811.95:595:52
911.95:595:52
1011.95:595:52
1111.95:595:52
1211.95:595:52
1311.95:595:52
1411.95:595:52
1511.95:595:52
1611.95:595:51
1711.96:005:51
1811.96:005:51
1911.96:005:51
2011.96:005:51
2111.96:005:51
2211.96:005:51
2311.96:005:51
2411.96:005:51
2511.96:005:51
2611.86:015:52
2711.86:015:52
2811.86:015:52
2911.86:015:52
3011.86:015:52
3111.86:015:52

Solar energy in May

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in May, about 4.53 kWh/m².

For context, solar energy here swings from a low near 4.22 kWh/m² to a high of 6.19 kWh/m² in October across the year — May's 4.53 kWh/m² sits near the bottom.

024151015202531
Solar energy (kWh/m²)Level
14.3Bright
24.3Bright
34.3Bright
44.3Bright
54.3Bright
64.4Bright
74.4Bright
84.4Bright
94.4Bright
104.5Bright
114.5Bright
124.5Bright
134.5Bright
144.5Bright
154.6Bright
164.6Bright
174.6Bright
184.6Bright
194.6Bright
204.6Bright
214.6Bright
224.6Bright
234.6Bright
244.7Bright
254.7Bright
264.7Bright
274.7Bright
284.7Bright
294.7Bright
304.7Bright
314.7Bright
Planning a trip in May

Hazard calendar for São João Batista

In seasonPeak

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

São João Batista'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 Batista?

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

3.0
Sightseeing
8th-best month of the year
4.4
Beach & pool
8th-best month of the year

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

What to pack for São João Batista in May

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

In May, São João Batista sees daytime highs around 31°C and nights near 25°C. Pack light clothes and rain gear. Worth having: sun protection. About 25 days see rain.

light clothesrain gearsun protection

Sea temperature near São João Batista 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 60 km away) is warmest in May at about 29°C and coldest in October 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
Apr29Tropical
May29Tropical
Jun29Tropical
Jul28Tropical
Aug28Tropical
Sep28Warm
Oct28Warm
Nov28Warm
Dec28Warm

UV index in São João Batista 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 São João Batista peaks around March 18 at about 15 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near July 15 at about 10 (extreme).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeMar 18UV 15Jul 15UV 10
UV index (midday)Level
Jan13Extreme
Feb14Extreme
Mar15Extreme
Apr14Extreme
May11Extreme
Jun10Extreme
Jul10Very high
Aug10Extreme
Sep12Extreme
Oct12Extreme
Nov11Extreme
Dec11Extreme

Air quality in São João Batista 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 Batista is worst in November — around 18 µg/m³ PM2.5 (moderate), about 2.1× the cleanest month (June, 9 µg/m³).

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

01020JanFebMarAprMayJunJulAugSepOctNovDecModerateGoodModerateNov 1918 µg/m³Jun 199 µg/m³
PM2.5 (µg/m³)Level
Jan15Moderate
Feb17Moderate
Mar16Moderate
Apr14Moderate
May10Good
Jun9Good
Jul9Good
Aug10Good
Sep9Good
Oct13Moderate
Nov18Moderate
Dec16Moderate
Location & terrain

Where is São João Batista?

São João Batista sits at 3.0°S, 44.8°W, 6 m above sea level, in Brazil. The nearest listed city is São Vicente Ferrer, 11 km away.

Topography around São João Batista

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

Within 3 km, the terrain around São João Batista has only modest variations in elevation — a maximum elevation change of 32 m around an average of 12 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 62 m; within 80 km, only modest variations in elevation — a maximum elevation change of 171 m.

The land around São João Batista is covered by grassland (52%), trees (26%) and wetland (20%) within 3 km, grassland (42%) and wetland (36%) within 16 km, and trees (43%) and grassland (27%) within 80 km.

3 km
32 m
16 km
62 m
80 km
171 m
treesgrasslandcroplandartificial surfaceswaterwetlandmangroves
May weather nearby: São Vicente Ferrer 11 km · São Bento 29 km · Matinha 30 km · Palmeirândia 36 km · Viana 37 km · Anajatuba 40 km · Cajari 47 km · Bacabeira 55 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 Batista (-2.9553°, -44.8069°, elevation 6 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).