Itanhém weather in May

In May, Itanhém sees average daytime highs of 28°C and overnight lows near 19°C, with 40 mm of rain across 10.1 wet days and about 11.2 hours of daylight. It is the 9th-warmest and 8th-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 22% of the time in May, and the air most often feels muggy.

Daylight stretches from about 11 h 24 min at the start of May to 11 h 06 min by month's end. Set against the rest of the year, May is Itanhém's 7th-clearest and 11th-windiest month. For the whole year in context, see Itanhém's year-round climate.

Daytime high
28°
9th warmest
Overnight low
19°
5th coldest
Rainfall
40 mm
10.1 wet days
Daylight
11 h 12 min
6:02 AM – 5:14 PM
Cloud cover
61%
7th clearest
Wind
8 km/h
11th windiest
Solar energy
3.72 kWh/m²
Travel score
6.1
out of 10

Itanhém is 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 Itanhém reaches about 28°C in the afternoon and slips back to 19°C overnight — a 9°C spread between the day's warmth and the night's chill. On most days the high lands between 25°C and 31°C. Set against its neighbours, May runs about 2°C cooler than April and about 1°C warmer than June.

15°20°25°30°35°151015202531
Avg high (°C)Avg low (°C)
12920
22919
32919
42919
52819
62819
72819
82819
92819
102819
112819
122819
132819
142819
152819
162819
172819
182819
192819
202819
212818
222818
232818
242718
252718
262718
272718
282718
292718
302718
312718

How May really feels in Itanhém

Once humidity and wind are folded in, May averages 0 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
0
heat index over the day's high
Days feeling ≤ C
0
wind chill below the day's low

May sits comfortably in between — no days that feel dangerously hot or drop to a hard freeze once humidity and wind are folded in.

Itanhém weather by month

How May compares with the rest of the year at a glance. May is the 9th-warmest and 8th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan31° / 21°8111.512.94.1
Feb32° / 22°599.312.64.0
Mar31° / 21°11115.412.13.9
Apr30° / 20°7313.811.64.7
May28° / 19°4010.111.26.1
Jun27° / 17°308.9116.7
Jul26° / 17°319.411.16.8
Aug27° / 16°257.511.46.9
Sep28° / 18°306.711.96.3
Oct29° / 19°779.812.45.2
Nov29° / 20°13914.712.84.5
Dec31° / 21°13313.9134.2

Cloud cover in May

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 22% of the time in May.

Beyond those clear spells, partly cloudy skies cover about 25% of May, with mostly cloudy or overcast conditions the remaining 54%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
15248
25149
35050
44951
54852
64852
74753
84753
94654
104555
114555
124555
134456
144357
154357
164357
174258
184357
194357
204456
214456
224555
234555
244654
254654
264753
274753
284753
294852
304852
315050

Chance of precipitation in May

Any precipitation

Itanhém gets around 40 mm of rain over 10.1 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 33% and peaks near 39% on the wettest days. The odds ease toward the end of the month.

0%10%20%30%40%50%151015202531
Rain chance (%)
139
238
337
436
535
635
734
833
933
1033
1133
1233
1333
1433
1533
1633
1733
1833
1933
2033
2133
2233
2333
2432
2532
2632
2731
2831
2931
3030
3130

Humidity in May

DryComfortableHumidMuggyOppressiveMiserable

Most of May feels muggy — the stacked bands show each day's mix of comfort levels, read off the dew point.

By dew point, May lands in the muggy band about 58% of days. Sticky, muggy-or-worse air turns up on roughly 66% of them.

0%25%50%75%100%151015202531
Comfortable (%)Humid (%)Muggy (%)Oppressive (%)
12195920
23205918
33215917
43225916
54235815
64245715
74255714
84265713
94265812
104275712
114285711
124295710
13429589
14430588
15431578
16431587
17432586
18433576
19433585
20333595
21334585
22334594
23335584
24335593
25336583
26436573
27437572
28437572
29537562
30537562
31538552

Wind in May

Winds average 8 km/h in May.

Across May, daily wind ranges from about 8 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
18calm
28calm
38calm
48calm
58calm
68calm
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 24 min at the start of May to 11 h 06 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 5:57 AM to 6:07 AM, and sunset from 5:20 PM to 5:10 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
111.45:575:20
211.45:575:20
311.45:575:19
411.35:585:19
511.35:585:18
611.35:585:18
711.35:595:17
811.35:595:17
911.35:595:16
1011.36:005:16
1111.36:005:15
1211.26:005:15
1311.26:015:15
1411.26:015:14
1511.26:015:14
1611.26:025:14
1711.26:025:13
1811.26:025:13
1911.26:035:13
2011.26:035:12
2111.16:035:12
2211.16:045:12
2311.16:045:12
2411.16:045:11
2511.16:055:11
2611.16:055:11
2711.16:065:11
2811.16:065:11
2911.16:065:11
3011.16:075:11
3111.16:075:10

Solar energy in May

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in May, about 3.72 kWh/m².

For context, solar energy here swings from a low near 3.45 kWh/m² to a high of 6.26 kWh/m² in January across the year — May's 3.72 kWh/m² sits near the bottom.

012345151015202531
Solar energy (kWh/m²)Level
14.1Bright
24.0Bright
34.0Bright
44.0Bright
54.0Moderate
63.9Moderate
73.9Moderate
83.9Moderate
93.9Moderate
103.8Moderate
113.8Moderate
123.8Moderate
133.7Moderate
143.7Moderate
153.7Moderate
163.7Moderate
173.6Moderate
183.6Moderate
193.6Moderate
203.6Moderate
213.6Moderate
223.6Moderate
233.6Moderate
243.6Moderate
253.5Moderate
263.5Moderate
273.5Moderate
283.5Moderate
293.5Moderate
303.5Moderate
313.5Moderate
Planning a trip in May

Hazard calendar for Itanhém

In seasonPeak

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

Itanhém's rainy season runs March–April, 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 Itanhém?

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

6.1
Sightseeing
5th-best month of the year
6.7
Beach & pool
5th-best month of the year

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

What to pack for Itanhém in May

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

In May, Itanhém sees daytime highs around 28°C and nights near 19°C. Pack light clothes. Worth having: rain gear. About 10 days see rain.

light clothesrain gear

UV index in Itanhém in May

LowModerateHighVery highExtreme

Clear-sky midday UV in May peaks around 8 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Itanhém peaks around February 15 at about 15 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near June 21 at about 7 (very high).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeVery highExtremeFeb 15UV 15Jun 21UV 7
UV index (midday)Level
Jan14Extreme
Feb15Extreme
Mar14Extreme
Apr11Extreme
May8Very high
Jun7Very high
Jul8Very high
Aug9Very high
Sep11Extreme
Oct12Extreme
Nov14Extreme
Dec13Extreme
Location & terrain

Where is Itanhém?

Itanhém sits at 17.2°S, 40.3°W, 189 m above sea level, in Brazil. The nearest listed city is Medeiros Neto, 26 km away.

Topography around Itanhém

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

Within 3 km, the terrain around Itanhém has only modest variations in elevation — a maximum elevation change of 201 m around an average of 212 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 623 m; within 80 km, large variations in elevation — a maximum elevation change of 1,163 m.

The land around Itanhém is covered by grassland (90%) within 3 km, grassland (85%) within 16 km, and grassland (75%) and trees (24%) within 80 km.

3 km
201 m
16 km
623 m
80 km
1,163 m
treesgrasslandcroplandartificial surfaces
May weather nearby: Medeiros Neto 26 km · Águas Formosas 65 km · Teixeira de Freitas 75 km · Nanuque 75 km · Carlos Chagas 76 km · Itamaraju 86 km · Guaratinga 87 km · Posto da Mata 94 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 Itanhém (-17.1664°, -40.33°, elevation 189 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. Topography is sampled from the Copernicus DEM GLO-90 elevation model (© ESA/Airbus) and ESA WorldCover 2021 land cover (CC BY 4.0).