Rio Tinto weather in May

In May, Rio Tinto sees average daytime highs of 28°C and overnight lows near 24°C, with 164 mm of rain across 24.2 wet days and about 11.7 hours of daylight. It is the 6th-warmest and 2nd-wettest month of the year here.

Day-to-day highs hold fairly steady near 28°C through the month. The sky is clear or mostly clear about 44% 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 36 min by month's end. Set against the rest of the year, May is Rio Tinto's 8th-clearest and 8th-windiest month. For the whole year in context, see Rio Tinto's year-round climate.

Daytime high
28°
6th warmest
Overnight low
24°
6th coldest
Rainfall
164 mm
24.2 wet days
Daylight
11 h 42 min
5:26 AM – 5:07 PM
Cloud cover
50%
8th clearest
Wind
18 km/h
8th windiest
Solar energy
4.69 kWh/m²
Travel score
4.5
out of 10

Rio Tinto 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 28°C through the month.

A typical May day in Rio Tinto reaches about 28°C in the afternoon and slips back to 24°C overnight — a 3°C spread between the day's warmth and the night's chill. On most days the high lands between 27°C and 29°C. Set against its neighbours, May runs on par with April and about 1°C warmer than June.

20°23°25°28°30°151015202531
Avg high (°C)Avg low (°C)
12825
22825
32825
42825
52825
62825
72825
82825
92825
102825
112825
122825
132825
142825
152824
162824
172824
182824
192824
202824
212824
222824
232824
242824
252824
262824
272824
282724
292724
302724
312724

Rio Tinto weather by month

How May compares with the rest of the year at a glance. May is the 6th-warmest and 2nd-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan28° / 25°7118.612.44.9
Feb28° / 25°8719.412.24.4
Mar29° / 25°11921.8124.3
Apr28° / 25°16324.111.94.0
May28° / 24°16424.211.74.5
Jun27° / 24°17824.111.64.6
Jul26° / 23°15724.911.64.7
Aug26° / 23°7720.911.85.3
Sep27° / 23°4716.7125.9
Oct27° / 24°321412.26.2
Nov28° / 25°2811.412.36.3
Dec28° / 25°4214.512.45.5

Cloud cover in May

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 44% 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 34%. Skies tend to open up as the month goes on.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
15842
25842
35941
45941
56040
66139
76139
86238
96337
106436
116436
126535
136535
146535
156634
166634
176634
186733
196733
206832
216931
226931
236931
246931
257129
267129
277129
287129
297129
307327
317327

Chance of precipitation in May

Any precipitation

Rio Tinto gets around 164 mm of rain over 24.2 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 78% and peaks near 80% on the wettest days.

0%20%40%60%80%151015202531
Rain chance (%)
180
280
380
479
579
679
778
878
978
1077
1177
1277
1376
1476
1576
1676
1776
1877
1977
2077
2178
2278
2378
2478
2579
2679
2779
2880
2980
3080
3180

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 97% of days. Sticky, muggy-or-worse air turns up on roughly 100% of them.

0%25%50%75%100%151015202531
Muggy (%)Oppressive (%)Miserable (%)
10946
20955
30955
40955
50964
60964
70964
80964
90973
100973
110973
120982
130982
140982
150982
160982
170982
180991
190991
200991
210991
220991
230991
241981
251981
261990
271990
282980
292980
302980
312980

Wind in May

Winds average 18 km/h in May.

Across May, daily wind ranges from about 17 km/h on the calmest days to 18 km/h at its breeziest. It stays fairly steady from day to day.

0510152025151015202531
Wind speed (km/h)Feels
117light breeze
217light breeze
317light breeze
417light breeze
517light breeze
617light breeze
717light breeze
817light breeze
918light breeze
1018light breeze
1118light breeze
1218light breeze
1318light breeze
1418light breeze
1518light breeze
1618light breeze
1718light breeze
1818light breeze
1918light breeze
2018light breeze
2118light breeze
2218light breeze
2318light breeze
2418light breeze
2518light breeze
2618light breeze
2718light breeze
2818light breeze
2918light breeze
3018light breeze
3118light breeze

Sunrise & sunset in May

DaylightNight

Daylight runs from about 11 h 48 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 12 minutes over May. Sunrise moves from 5:25 AM to 5:29 AM, and sunset from 5:10 PM to 5:07 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
111.85:255:10
211.85:255:10
311.85:255:10
411.75:255:10
511.75:255:09
611.75:255:09
711.75:255:09
811.75:255:09
911.75:255:08
1011.75:255:08
1111.75:255:08
1211.75:255:08
1311.75:255:08
1411.75:265:08
1511.75:265:07
1611.75:265:07
1711.75:265:07
1811.75:265:07
1911.75:265:07
2011.75:265:07
2111.75:275:07
2211.75:275:07
2311.75:275:07
2411.75:275:07
2511.75:275:07
2611.75:285:07
2711.65:285:07
2811.65:285:07
2911.65:285:07
3011.65:285:07
3111.65:295:07

Solar energy in May

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in May, about 4.69 kWh/m².

For context, solar energy here swings from a low near 4.23 kWh/m² to a high of 6.15 kWh/m² in November across the year — May's 4.69 kWh/m² sits near the bottom.

024151015202531
Solar energy (kWh/m²)Level
14.8Bright
24.8Bright
34.8Bright
44.8Bright
54.8Bright
64.8Bright
74.8Bright
84.8Bright
94.8Bright
104.8Bright
114.8Bright
124.8Bright
134.7Bright
144.7Bright
154.7Bright
164.7Bright
174.7Bright
184.7Bright
194.7Bright
204.7Bright
214.6Bright
224.6Bright
234.6Bright
244.6Bright
254.5Bright
264.5Bright
274.5Bright
284.5Bright
294.5Bright
304.5Bright
314.4Bright
Planning a trip in May

Hazard calendar for Rio Tinto

In seasonPeak

In May, Rio Tinto sits inside its rainy season season. The full year is below, with each hazard's peak months called out.

Rio Tinto's rainy season runs February–July, 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 Rio Tinto?

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

4.5
Sightseeing
9th-best month of the year
4.8
Beach & pool
9th-best month of the year

May is a reasonable time to visit Rio Tinto for sightseeing.

What to pack for Rio Tinto in May

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

In May, Rio Tinto sees daytime highs around 28°C and nights near 24°C. Pack light clothes and rain gear. Worth having: sun protection. About 24 days see rain.

light clothesrain gearsun protection

Sea temperature near Rio Tinto 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 24 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
Feb29Tropical
Mar29Tropical
Apr29Tropical
May28Tropical
Jun27Warm
Jul27Warm
Aug26Warm
Sep26Warm
Oct27Warm
Nov27Warm
Dec28Warm

UV index in Rio Tinto 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 Rio Tinto peaks around March 10 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 10UV 15Jul 15UV 10
UV index (midday)Level
Jan13Extreme
Feb15Extreme
Mar15Extreme
Apr13Extreme
May11Extreme
Jun10Very high
Jul10Very high
Aug10Very high
Sep12Extreme
Oct12Extreme
Nov12Extreme
Dec12Extreme
Location & terrain

Where is Rio Tinto?

Rio Tinto sits at 6.8°S, 35.1°W, 35 m above sea level, in Brazil. The nearest listed city is Mamanguape, 6.0 km away.

Topography around Rio Tinto

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

Within 3 km, the terrain around Rio Tinto has only modest variations in elevation — a maximum elevation change of 140 m around an average of 43 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 219 m; within 80 km, large variations in elevation — a maximum elevation change of 646 m.

The land around Rio Tinto is covered by grassland (40%) and trees (38%) within 3 km, grassland (38%), trees (27%) and cropland (22%) within 16 km, and grassland (47%) and water (28%) within 80 km.

3 km
140 m
16 km
219 m
80 km
646 m
treesshrubsgrasslandcroplandartificial surfaceswaterwetlandmangroves
May weather nearby: Mamanguape 6.0 km · Itapororoca 19 km · Araçagi 34 km · Cabedelo 34 km · Santa Rita 36 km · Sapé 37 km · Cruz do Espírito Santo 37 km · Mari 39 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 Rio Tinto (-6.8031°, -35.0806°, elevation 35 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).