Guaiúba weather in May

In May, Guaiúba sees average daytime highs of 30°C and overnight lows near 23°C, with 100 mm of rain across 17.6 wet days and about 11.8 hours of daylight. It is the 10th-warmest and 4th-wettest month of the year here.

Day-to-day highs hold fairly steady near 30°C through the month. The sky is clear or mostly clear about 33% of the time in May, and the air most often feels oppressive.

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 Guaiúba's 8th-clearest and 10th-windiest month. For the whole year in context, see Guaiúba's year-round climate.

Daytime high
30°
10th warmest
Overnight low
23°
6th coldest
Rainfall
100 mm
17.6 wet days
Daylight
11 h 48 min
5:36 AM – 5:25 PM
Cloud cover
58%
8th clearest
Wind
9 km/h
10th windiest
Solar energy
4.9 kWh/m²
Travel score
4.2
out of 10

Guaiúba 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 30°C through the month.

A typical May day in Guaiúba reaches about 30°C in the afternoon and slips back to 23°C overnight — a 7°C spread between the day's warmth and the night's chill. On most days the high lands between 28°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)
13023
23023
33023
43023
53023
63023
73023
83023
93023
103023
113023
123023
133023
143023
153023
163023
173023
183023
193023
203023
213023
223023
233023
243023
253023
263023
273023
283023
293023
303023
313023

How May really feels in Guaiúba

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.

Guaiúba weather by month

How May compares with the rest of the year at a glance. May is the 10th-warmest and 4th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan31° / 24°9917.112.23.7
Feb30° / 24°12819.412.13.5
Mar30° / 23°18124.6123.3
Apr30° / 23°20624.511.93.4
May30° / 23°10017.611.84.2
Jun30° / 23°4610.811.85.1
Jul31° / 22°245.811.85.4
Aug32° / 23°51.411.95.2
Sep32° / 23°30.6125.0
Oct32° / 24°51.512.14.8
Nov32° / 24°72.212.24.7
Dec32° / 24°27812.24.3

Cloud cover in May

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 33% of the time in May.

Beyond those clear spells, partly cloudy skies cover about 19% of May, with mostly cloudy or overcast conditions the remaining 48%. Skies tend to open up as the month goes on.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
13664
23862
33961
44159
54357
64456
74555
84654
94753
104951
114852
124951
135050
145149
155248
165248
175347
185446
195545
205545
215743
225743
235941
245941
256139
266238
276337
286436
296436
306634
316634

Chance of precipitation in May

Any precipitation

Guaiúba gets around 100 mm of rain over 17.6 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 70% on the wettest days. The odds ease toward the end of the month.

0%20%40%60%80%151015202531
Rain chance (%)
170
268
367
466
564
663
762
861
960
1059
1158
1258
1357
1457
1557
1657
1757
1857
1956
2056
2155
2255
2354
2453
2552
2652
2751
2850
2949
3048
3147

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 94% of days. Sticky, muggy-or-worse air turns up on roughly 100% of them.

0%25%50%75%100%151015202531
Muggy (%)Oppressive (%)Miserable (%)
10946
21945
31945
41945
51954
61954
71954
81954
91954
101954
111954
121954
131954
141954
151954
161954
171954
181954
191954
201954
212944
222953
232953
243943
253943
264942
275932
285932
296922
307921
318911

Wind in May

Winds average 9 km/h in May.

Across May, daily wind ranges from about 9 km/h on the calmest days to 10 km/h at its breeziest. It stays fairly steady from day to day.

051015151015202531
Wind speed (km/h)Feels
19calm
29calm
39calm
49calm
59calm
69calm
79calm
89calm
99calm
109calm
119calm
129calm
139calm
149calm
159calm
169calm
1710calm
1810calm
1910calm
2010calm
2110calm
2210calm
2310calm
2410calm
2510calm
2610calm
2710calm
2810calm
2910calm
3010calm
3110calm

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 5:36 AM to 5:38 AM, and sunset from 5:28 PM to 5:25 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
111.95:365:28
211.95:365:27
311.95:365:27
411.95:365:27
511.85:365:27
611.85:365:27
711.85:365:26
811.85:365:26
911.85:365:26
1011.85:365:26
1111.85:365:26
1211.85:365:26
1311.85:365:26
1411.85:365:25
1511.85:365:25
1611.85:365:25
1711.85:365:25
1811.85:365:25
1911.85:375:25
2011.85:375:25
2111.85:375:25
2211.85:375:25
2311.85:375:25
2411.85:375:25
2511.85:375:25
2611.85:385:25
2711.85:385:25
2811.85:385:25
2911.85:385:25
3011.85:385:25
3111.85:385:25

Solar energy in May

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in May, about 4.9 kWh/m².

For context, solar energy here swings from a low near 4.69 kWh/m² to a high of 6.64 kWh/m² in September across the year — May's 4.9 kWh/m² sits near the bottom.

024151015202531
Solar energy (kWh/m²)Level
14.7Bright
24.8Bright
34.8Bright
44.8Bright
54.8Bright
64.8Bright
74.8Bright
84.8Bright
94.9Bright
104.9Bright
114.9Bright
124.9Bright
134.9Bright
144.9Bright
154.9Bright
164.9Bright
174.9Bright
184.9Bright
194.9Bright
204.9Bright
214.9Bright
224.9Bright
234.9Bright
244.9Bright
254.9Bright
264.9Bright
274.9Bright
284.9Bright
294.9Bright
304.9Bright
314.9Bright
Planning a trip in May

Hazard calendar for Guaiúba

In seasonPeak

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

Guaiúba'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 Guaiúba?

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

4.2
Sightseeing
8th-best month of the year
5.7
Beach & pool
8th-best month of the year

May is a reasonable time to visit Guaiúba for sightseeing.

What to pack for Guaiúba in May

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

In May, Guaiúba sees daytime highs around 30°C and nights near 23°C. Pack light clothes and rain gear. Worth having: sun protection. About 18 days see rain.

light clothesrain gearsun protection

Sea temperature near Guaiúba 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 34 km away) is warmest in April at about 29°C and coldest in August near 27°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
Mar29Tropical
Apr29Tropical
May29Tropical
Jun28Warm
Jul27Warm
Aug27Warm
Sep27Warm
Oct27Warm
Nov27Warm
Dec28Warm

UV index in Guaiúba 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 Guaiúba peaks around March 16 at about 16 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near June 23 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 16UV 16Jun 23UV 10
UV index (midday)Level
Jan13Extreme
Feb14Extreme
Mar16Extreme
Apr14Extreme
May11Extreme
Jun10Very high
Jul10Very high
Aug10Extreme
Sep12Extreme
Oct12Extreme
Nov12Extreme
Dec11Extreme
Location & terrain

Where is Guaiúba?

Guaiúba sits at 4.0°S, 38.6°W, 75 m above sea level, in Brazil. The nearest listed city is Pacatuba, 6.0 km away.

Topography around Guaiúba

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

Within 3 km, the terrain around Guaiúba has large variations in elevation — a maximum elevation change of 607 m around an average of 146 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 755 m; within 80 km, large variations in elevation — a maximum elevation change of 1,081 m.

The land around Guaiúba is covered by trees (47%) and grassland (38%) within 3 km, trees (40%) and grassland (36%) within 16 km, and shrubs (30%), water (25%) and grassland (22%) within 80 km.

3 km
607 m
16 km
755 m
80 km
1,081 m
treesshrubsgrasslandcroplandartificial surfaceswater
May weather nearby: Pacatuba 6.0 km · Itaitinga 14 km · Maranguape 17 km · Horizonte 18 km · Maracanaú 18 km · Redenção 23 km · Pacajus 25 km · Eusébio 27 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 Guaiúba (-4.0397°, -38.6372°, 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. 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).