Olho d’Água das Cunhãs weather in May

In May, Olho d’Água das Cunhãs sees average daytime highs of 32°C and overnight lows near 24°C, with 111 mm of rain across 17.9 wet days and about 11.8 hours of daylight. It is the 9th-warmest and 6th-wettest month of the year here.

Day-to-day highs hold fairly steady near 32°C through the month. The sky is clear or mostly clear about 18% 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 Olho d’Água das Cunhãs's 7th-clearest and 8th-windiest month. For the whole year in context, see Olho d’Água das Cunhãs's year-round climate.

Daytime high
32°
9th warmest
Overnight low
24°
8th coldest
Rainfall
111 mm
17.9 wet days
Daylight
11 h 48 min
6:02 AM – 5:51 PM
Cloud cover
67%
7th clearest
Wind
6 km/h
8th windiest
Solar energy
4.62 kWh/m²
Travel score
3.4
out of 10

Temperature in May

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 32°C through the month.

A typical May day in Olho d’Água das Cunhãs reaches about 32°C in the afternoon and slips back to 24°C overnight — a 8°C spread between the day's warmth and the night's chill. On most days the high lands between 30°C and 33°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)
13124
23124
33124
43124
53124
63124
73124
83124
93124
103124
113124
123224
133224
143224
153224
163224
173224
183224
193224
203224
213224
223224
233224
243224
253224
263224
273224
283224
293224
303224
313224

How May really feels in Olho d’Água das Cunhãs

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.

Olho d’Água das Cunhãs weather by month

How May compares with the rest of the year at a glance. May is the 9th-warmest and 6th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan32° / 24°23024.912.22.6
Feb31° / 23°24624.712.12.5
Mar31° / 24°28129122.4
Apr31° / 24°2382611.92.7
May32° / 24°11117.911.83.4
Jun32° / 23°306.411.84.3
Jul33° / 23°143.211.84.1
Aug35° / 24°51.411.93.3
Sep36° / 25°71.3122.7
Oct36° / 25°183.412.12.5
Nov35° / 25°50812.22.6
Dec34° / 25°12115.712.22.7

Cloud cover in May

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 18% of the time in May.

Beyond those clear spells, partly cloudy skies cover about 24% of May, with mostly cloudy or overcast conditions the remaining 58%. Skies tend to open up as the month goes on.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
12278
22278
32476
42476
52674
62773
72872
83070
93268
103367
113565
123664
133862
144060
154258
164357
174456
184654
194753
204852
214951
224951
235149
245347
255347
265446
275644
285743
295842
305941
316040

Chance of precipitation in May

Any precipitation

Olho d’Água das Cunhãs gets around 111 mm of rain over 17.9 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 57% and peaks near 75% on the wettest days. The odds ease toward the end of the month.

0%20%40%60%80%151015202531
Rain chance (%)
175
273
372
470
569
667
766
864
962
1061
1160
1259
1358
1457
1557
1656
1756
1856
1955
2055
2154
2253
2352
2451
2550
2649
2747
2845
2943
3042
3139

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 72% of days. Sticky, muggy-or-worse air turns up on roughly 100% of them.

0%25%50%75%100%151015202531
Muggy (%)Oppressive (%)Miserable (%)
101783
201783
301783
401783
501882
601882
701882
801981
901981
1002080
1102179
1202278
1302278
1402377
1502575
1602674
1702773
1802872
1902971
2003169
2103268
2203367
2303565
2403664
2503862
2603961
2704159
2814257
2914455
3014653
3114851

Wind in May

Winds average 6 km/h in May.

Across May, daily wind ranges from about 5 km/h on the calmest days to 6 km/h at its breeziest. It stays fairly steady from day to day.

0246810151015202531
Wind speed (km/h)Feels
15calm
25calm
35calm
45calm
55calm
65calm
75calm
85calm
96calm
106calm
116calm
126calm
136calm
146calm
156calm
166calm
176calm
186calm
196calm
206calm
216calm
226calm
236calm
246calm
256calm
266calm
276calm
286calm
296calm
306calm
316calm

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 6:02 AM to 6:04 AM, and sunset from 5:53 PM to 5:51 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
111.96:025:53
211.96:025:53
311.96:025:53
411.86:025:53
511.86:025:53
611.86:025:52
711.86:025:52
811.86:025:52
911.86:025:52
1011.86:025:52
1111.86:025:52
1211.86:025:51
1311.86:025:51
1411.86:025:51
1511.86:025:51
1611.86:025:51
1711.86:025:51
1811.86:035:51
1911.86:035:51
2011.86:035:51
2111.86:035:51
2211.86:035:51
2311.86:035:51
2411.86:035:51
2511.86:035:51
2611.86:045:51
2711.86:045:51
2811.86:045:51
2911.86:045:51
3011.86:045:51
3111.86:045:51

Solar energy in May

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in May, about 4.62 kWh/m².

For context, solar energy here swings from a low near 4.36 kWh/m² to a high of 6.27 kWh/m² in October across the year — May's 4.62 kWh/m² sits near the bottom.

024151015202531
Solar energy (kWh/m²)Level
14.4Bright
24.4Bright
34.4Bright
44.4Bright
54.5Bright
64.5Bright
74.5Bright
84.5Bright
94.5Bright
104.6Bright
114.6Bright
124.6Bright
134.6Bright
144.6Bright
154.7Bright
164.7Bright
174.7Bright
184.7Bright
194.7Bright
204.7Bright
214.7Bright
224.7Bright
234.7Bright
244.7Bright
254.7Bright
264.8Bright
274.8Bright
284.8Bright
294.8Bright
304.8Bright
314.8Bright
Planning a trip in May

Hazard calendar for Olho d’Água das Cunhãs

In seasonPeak

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

Olho d’Água das Cunhãs's monsoon runs January–April, 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 Olho d’Água das Cunhãs?

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

3.4
Sightseeing
3rd-best month of the year
5.3
Beach & pool
7th-best month of the year

May is a weaker month for outdoor sightseeing in Olho d’Água das Cunhãs.

What to pack for Olho d’Água das Cunhãs in May

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

In May, Olho d’Água das Cunhãs sees daytime highs around 32°C and nights near 24°C. Pack light clothes and rain gear. Worth having: sun protection. About 18 days see rain.

light clothesrain gearsun protection

UV index in Olho d’Água das Cunhãs 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 Olho d’Água das Cunhãs peaks around March 16 at about 15 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near July 19 at about 10 (extreme).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeMar 16UV 15Jul 19UV 10
UV index (midday)Level
Jan13Extreme
Feb14Extreme
Mar16Extreme
Apr14Extreme
May11Extreme
Jun10Extreme
Jul10Very high
Aug10Extreme
Sep12Extreme
Oct12Extreme
Nov11Extreme
Dec11Extreme

Air quality in Olho d’Água das Cunhãs 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 Olho d’Água das Cunhãs is worst in November — around 27 µg/m³ PM2.5 (moderate), about 3.2× the cleanest month (June, 9 µg/m³).

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

0102030JanFebMarAprMayJunJulAugSepOctNovDecModerateGoodModerateNov 1426 µg/m³Jun 189 µg/m³
PM2.5 (µg/m³)Level
Jan15Moderate
Feb15Moderate
Mar14Moderate
Apr13Moderate
May11Good
Jun9Good
Jul10Good
Aug10Good
Sep13Moderate
Oct22Moderate
Nov27Moderate
Dec20Moderate
Location & terrain

Where is Olho d’Água das Cunhãs?

Olho d’Água das Cunhãs sits at 4.1°S, 45.1°W, 75 m above sea level, in Brazil. The nearest listed city is Vitorino Freire, 22 km away.

Topography around Olho d’Água das Cunhãs

How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Olho d’Água das Cunhãs.

Within 3 km, the terrain around Olho d’Água das Cunhãs has only modest variations in elevation — a maximum elevation change of 41 m around an average of 32 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 102 m; within 80 km, significant variations in elevation — a maximum elevation change of 362 m.

The land around Olho d’Água das Cunhãs is covered by grassland (88%) within 3 km, grassland (92%) within 16 km, and grassland (59%) and trees (37%) within 80 km.

3 km
41 m
16 km
102 m
80 km
362 m
treesshrubsgrasslandartificial surfaceswaterwetland
May weather nearby: Vitorino Freire 22 km · Pio XII 34 km · Paulo Ramos 37 km · Bacabal 39 km · Lago da Pedra 47 km · São Luís Gonzaga do Maranhão 56 km · Santa Inês 60 km · Santa Luzia 63 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 Olho d’Água das Cunhãs (-4.1387°, -45.1188°, elevation 75 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).