Ilhéus weather in May

In May, Ilhéus sees average daytime highs of 26°C and overnight lows near 23°C, with 110 mm of rain across 19.1 wet days and about 11.3 hours of daylight. It is the 7th-warmest and 5th-wettest month of the year here.

Day-to-day highs hold fairly steady near 26°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 30 min at the start of May to 11 h 12 min by month's end. Set against the rest of the year, May is Ilhéus's 5th-clearest and 5th-windiest month. For the whole year in context, see Ilhéus's year-round climate.

Daytime high
26°
7th warmest
Overnight low
23°
5th coldest
Rainfall
110 mm
19.1 wet days
Daylight
11 h 18 min
5:53 AM – 5:12 PM
Cloud cover
53%
5th clearest
Wind
12 km/h
5th windiest
Solar energy
4.12 kWh/m²
Travel score
5.3
out of 10

Temperature in May

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 26°C through the month.

A typical May day in Ilhéus reaches about 26°C in the afternoon and slips back to 23°C overnight — a 3°C spread between the day's warmth and the night's chill. On most days the high lands between 25°C and 28°C. Set against its neighbours, May runs about 1°C cooler than April and about 1°C warmer than June.

20°23°25°28°30°151015202531
Avg high (°C)Avg low (°C)
12724
22724
32724
42724
52724
62723
72723
82723
92723
102723
112723
122723
132723
142623
152623
162623
172623
182623
192623
202623
212623
222623
232623
242623
252623
262623
272623
282623
292623
302623
312623

Ilhéus weather by month

How May compares with the rest of the year at a glance. May is the 7th-warmest and 5th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan28° / 25°9520.412.84.9
Feb28° / 25°8119.412.54.5
Mar28° / 25°11623.112.14.4
Apr28° / 24°13123.111.74.6
May26° / 23°11019.111.35.3
Jun25° / 22°9819.411.15.5
Jul25° / 21°9520.111.25.6
Aug25° / 21°7017.711.55.9
Sep25° / 22°6115.111.96.2
Oct26° / 23°8316.112.35.9
Nov27° / 24°12517.912.75.2
Dec28° / 25°11017.912.95.3

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 30% of May, with mostly cloudy or overcast conditions the remaining 36%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
16634
26535
36634
46634
56634
66634
76634
86535
96535
106436
116436
126337
136337
146238
156238
166139
176139
186139
196139
206139
216139
226238
236238
246337
256337
266436
276436
286535
296634
306634
316634

Chance of precipitation in May

Any precipitation

Ilhéus gets around 110 mm of rain over 19.1 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 63% and peaks near 72% on the wettest days. The odds ease toward the end of the month.

0%20%40%60%80%151015202531
Rain chance (%)
172
271
370
469
568
667
766
865
964
1063
1163
1262
1362
1461
1561
1661
1760
1860
1960
2059
2159
2259
2359
2459
2559
2660
2760
2861
2961
3062
3162

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 80% of days. Sticky, muggy-or-worse air turns up on roughly 100% of them.

0%25%50%75%100%151015202531
Humid (%)Muggy (%)Oppressive (%)Miserable (%)
107885
207885
308875
408884
509874
6010864
7011854
8012844
9012853
10013843
11014833
12015823
13016822
14017812
15018802
16019792
17019792
18020782
19021772
20021772
21022762
22022771
23123751
24123751
25124741
26124741
27125731
28126721
29126721
30127711
31128701

Wind in May

Winds average 12 km/h in May.

Across May, daily wind ranges from about 12 km/h on the calmest days to 13 km/h at its breeziest. It stays fairly steady from day to day.

051015151015202531
Wind speed (km/h)Feels
112light breeze
212light breeze
312light breeze
412light breeze
512light breeze
612light breeze
712light breeze
812light breeze
912light breeze
1012light breeze
1113light breeze
1213light breeze
1313light breeze
1413light breeze
1513light breeze
1613light breeze
1713light breeze
1813light breeze
1913light breeze
2013light breeze
2112light breeze
2212light breeze
2312light breeze
2412light breeze
2512light breeze
2612light breeze
2712light breeze
2812light breeze
2912light breeze
3012light breeze
3112light breeze

Sunrise & sunset in May

DaylightNight

Daylight runs from about 11 h 30 min at the start of May to 11 h 12 min by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 18 minutes over May. Sunrise moves from 5:49 AM to 5:58 AM, and sunset from 5:18 PM to 5:09 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
111.55:495:18
211.55:495:17
311.55:495:17
411.45:505:16
511.45:505:16
611.45:505:15
711.45:505:15
811.45:515:15
911.45:515:14
1011.45:515:14
1111.45:515:13
1211.45:525:13
1311.35:525:13
1411.35:525:12
1511.35:535:12
1611.35:535:12
1711.35:535:12
1811.35:545:11
1911.35:545:11
2011.35:545:11
2111.35:545:11
2211.35:555:10
2311.35:555:10
2411.25:555:10
2511.25:565:10
2611.25:565:10
2711.25:565:10
2811.25:575:10
2911.25:575:10
3011.25:575:09
3111.25:585:09

Solar energy in May

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in May, about 4.12 kWh/m².

For context, solar energy here swings from a low near 3.75 kWh/m² to a high of 6.21 kWh/m² in January across the year — May's 4.12 kWh/m² sits near the bottom.

012345151015202531
Solar energy (kWh/m²)Level
14.4Bright
24.4Bright
34.4Bright
44.3Bright
54.3Bright
64.3Bright
74.3Bright
84.3Bright
94.3Bright
104.2Bright
114.2Bright
124.2Bright
134.2Bright
144.1Bright
154.1Bright
164.1Bright
174.1Bright
184.1Bright
194.0Bright
204.0Bright
214.0Bright
224.0Bright
234.0Moderate
244.0Moderate
254.0Moderate
263.9Moderate
273.9Moderate
283.9Moderate
293.9Moderate
303.9Moderate
313.9Moderate
Planning a trip in May

Is May a good time to visit Ilhéus?

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

5.3
Sightseeing
6th-best month of the year
5.2
Beach & pool
6th-best month of the year

May is a reasonable time to visit Ilhéus for sightseeing.

What to pack for Ilhéus in May

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

In May, Ilhéus sees daytime highs around 26°C and nights near 23°C. Pack rain gear. Worth having: light clothes. About 19 days see rain.

rain gearlight clothes

Sea temperature near Ilhéus in May

The nearest coast averages about 27°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 19 km away) is warmest in March at about 28°C and coldest in August near 25°C.

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

24°26°28°30°JanFebMarAprMayJunJulAugSepOctNovDecrefreshingwarmtropicalcomfortable to swim
Sea temperature (°C)Comfort
Jan28Warm
Feb28Tropical
Mar28Tropical
Apr28Tropical
May27Warm
Jun26Warm
Jul26Warm
Aug25Warm
Sep25Warm
Oct26Warm
Nov27Warm
Dec27Warm

UV index in Ilhéus 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 Ilhéus peaks around February 18 at about 15 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near June 22 at about 8 (very high).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeVery highExtremeFeb 18UV 15Jun 22UV 8
UV index (midday)Level
Jan13Extreme
Feb15Extreme
Mar14Extreme
Apr12Extreme
May9Very high
Jun8Very high
Jul8Very high
Aug9Very high
Sep11Extreme
Oct13Extreme
Nov14Extreme
Dec13Extreme
Location & terrain

Where is Ilhéus?

Ilhéus sits at 14.8°S, 39.0°W, in Brazil. The nearest listed city is Itabuna, 27 km away.

Topography around Ilhéus

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

Within 3 km, the terrain around Ilhéus has only modest variations in elevation — a maximum elevation change of 72 m around an average of 7 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 181 m; within 80 km, large variations in elevation — a maximum elevation change of 1,034 m.

The land around Ilhéus is covered by water (55%) and artificial surfaces (22%) within 3 km, water (54%) and trees (40%) within 16 km, and trees (51%) and water (32%) within 80 km.

3 km
72 m
16 km
181 m
80 km
1,034 m
treesgrasslandartificial surfacesbare terrainwatermangroves
May weather nearby: Itabuna 27 km · Uruçuca 35 km · Itajuípe 39 km · Una 55 km · Itacaré 58 km · Coaraci 59 km · Ibicaraí 60 km · Ubaitaba 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 Ilhéus (-14.7991°, -39.0323°), 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).