Porto Franco weather in May

In May, Porto Franco sees average daytime highs of 32°C and overnight lows near 23°C, with 75 mm of rain across 11.6 wet days and about 11.7 hours of daylight. It is the 6th-warmest and 7th-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 27% 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 42 min by month's end. Set against the rest of the year, May is Porto Franco's 6th-clearest and 6th-windiest month. For the whole year in context, see Porto Franco's year-round climate.

Daytime high
32°
6th warmest
Overnight low
23°
7th coldest
Rainfall
75 mm
11.6 wet days
Daylight
11 h 42 min
6:14 AM – 5:57 PM
Cloud cover
61%
6th clearest
Wind
6 km/h
6th windiest
Solar energy
4.79 kWh/m²
Travel score
3.9
out of 10

Porto Franco 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 32°C through the month.

A typical May day in Porto Franco reaches about 32°C in the afternoon and slips back to 23°C overnight — a 9°C spread between the day's warmth and the night's chill. On most days the high lands between 30°C and 34°C. Set against its neighbours, May runs about 1°C warmer than April and about 1°C cooler than June.

20°25°30°35°151015202531
Avg high (°C)Avg low (°C)
13123
23123
33123
43223
53223
63223
73223
83223
93223
103223
113223
123223
133223
143223
153223
163223
173223
183223
193223
203223
213223
223223
233223
243223
253223
263223
273223
283222
293222
303222
313222

How May really feels in Porto Franco

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.

Porto Franco weather by month

How May compares with the rest of the year at a glance. May is the 6th-warmest and 7th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan30° / 23°21125.812.32.9
Feb30° / 23°21324.612.22.8
Mar31° / 23°22926.9122.8
Apr31° / 23°15220.911.93.2
May32° / 23°7511.611.73.9
Jun33° / 22°61.511.64.2
Jul34° / 22°40.611.74.0
Aug35° / 22°20.411.83.3
Sep35° / 23°142.4123.2
Oct34° / 24°508.512.13.3
Nov32° / 23°11515.912.33.3
Dec31° / 23°1532112.43.2

Cloud cover in May

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 27% of the time in May.

Beyond those clear spells, partly cloudy skies cover about 23% of May, with mostly cloudy or overcast conditions the remaining 51%. Skies tend to open up as the month goes on.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
13466
23565
33565
43763
53862
63862
74060
84159
94258
104456
114555
124753
134852
144951
155050
165149
175149
185248
195347
205446
215446
225545
235644
245743
255743
265941
276040
286139
296238
306337
316436

Chance of precipitation in May

Any precipitation

Porto Franco gets around 75 mm of rain over 11.6 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 37% and peaks near 56% on the wettest days. The odds ease toward the end of the month.

0%20%40%60%151015202531
Rain chance (%)
156
255
354
453
551
650
748
846
944
1042
1140
1239
1337
1436
1535
1634
1733
1833
1932
2031
2131
2230
2330
2429
2528
2627
2726
2825
2923
3022
3120

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 81% of days. Sticky, muggy-or-worse air turns up on roughly 100% of them.

0%25%50%75%100%151015202531
Humid (%)Muggy (%)Oppressive (%)Miserable (%)
1028711
2028711
3038710
4038710
5038710
604879
704879
805878
905878
1006877
1106877
1207876
1307876
1408875
1509865
16010855
17011854
18012844
19013834
20014833
21016813
22017803
23019783
24020773
25022762
26125722
27127702
28129682
29131662
30134632
31237592

Wind in May

Winds average 6 km/h in May.

Across May, daily wind ranges from about 6 km/h on the calmest days to 7 km/h at its breeziest. It stays fairly steady from day to day.

0246810151015202531
Wind speed (km/h)Feels
16calm
26calm
36calm
46calm
56calm
66calm
76calm
86calm
96calm
106calm
116calm
126calm
136calm
146calm
156calm
166calm
176calm
186calm
196calm
207calm
217calm
227calm
237calm
247calm
257calm
267calm
277calm
287calm
297calm
307calm
317calm

Sunrise & sunset in May

DaylightNight

Daylight runs from about 11 h 48 min at the start of May to 11 h 42 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 6:13 AM to 6:17 AM, and sunset from 6:00 PM to 5:57 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
111.86:136:00
211.86:136:00
311.86:136:00
411.86:135:59
511.86:145:59
611.86:145:59
711.86:145:59
811.76:145:58
911.76:145:58
1011.76:145:58
1111.76:145:58
1211.76:145:58
1311.76:145:58
1411.76:145:57
1511.76:145:57
1611.76:145:57
1711.76:155:57
1811.76:155:57
1911.76:155:57
2011.76:155:57
2111.76:155:57
2211.76:155:57
2311.76:165:57
2411.76:165:57
2511.76:165:57
2611.76:165:57
2711.76:165:57
2811.76:165:57
2911.76:175:57
3011.76:175:57
3111.76:175:57

Solar energy in May

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in May, about 4.79 kWh/m².

For context, solar energy here swings from a low near 4.47 kWh/m² to a high of 6.21 kWh/m² in September across the year — May's 4.79 kWh/m² falls in the middle.

024151015202531
Solar energy (kWh/m²)Level
14.7Bright
24.7Bright
34.7Bright
44.7Bright
54.7Bright
64.7Bright
74.8Bright
84.8Bright
94.8Bright
104.8Bright
114.8Bright
124.8Bright
134.8Bright
144.8Bright
154.8Bright
164.8Bright
174.8Bright
184.8Bright
194.8Bright
204.8Bright
214.8Bright
224.8Bright
234.8Bright
244.8Bright
254.9Bright
264.9Bright
274.9Bright
284.9Bright
294.9Bright
304.9Bright
315.0Bright
Planning a trip in May

Hazard calendar for Porto Franco

In seasonPeak

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

Porto Franco's monsoon runs November–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 Porto Franco?

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

3.9
Sightseeing
3rd-best month of the year
6.2
Beach & pool
6th-best month of the year

May is a weaker month for outdoor sightseeing in Porto Franco. The water and warmth also suit a beach or pool day.

What to pack for Porto Franco in May

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

In May, Porto Franco sees daytime highs around 32°C and nights near 23°C. Pack light clothes. Worth having: rain gear and sun protection. About 12 days see rain.

light clothesrain gearsun protection

UV index in Porto Franco 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 Porto Franco peaks around March 11 at about 15 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near June 22 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 11UV 15Jun 22UV 10
UV index (midday)Level
Jan14Extreme
Feb15Extreme
Mar15Extreme
Apr13Extreme
May11Extreme
Jun10Very high
Jul10Very high
Aug11Extreme
Sep12Extreme
Oct12Extreme
Nov11Extreme
Dec10Extreme

Air quality in Porto Franco 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 Porto Franco is worst in September — around 25 µg/m³ PM2.5 (moderate), about 3.9× the cleanest month (June, 6 µg/m³).

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

0102030JanFebMarAprMayJunJulAugSepOctNovDecModerateGoodModerateSep 2325 µg/m³Jun 187 µg/m³
PM2.5 (µg/m³)Level
Jan13Moderate
Feb13Moderate
Mar12Moderate
Apr12Good
May9Good
Jun6Good
Jul8Good
Aug17Moderate
Sep25Moderate
Oct25Moderate
Nov22Moderate
Dec17Moderate
Location & terrain

Where is Porto Franco?

Porto Franco sits at 6.3°S, 47.4°W, 165 m above sea level, in Brazil. The nearest listed city is Tocantinópolis, 2.0 km away.

Topography around Porto Franco

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

Within 3 km, the terrain around Porto Franco has only modest variations in elevation — a maximum elevation change of 66 m around an average of 152 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 180 m; within 80 km, significant variations in elevation — a maximum elevation change of 557 m.

The land around Porto Franco is covered by trees (36%) and grassland (29%) within 3 km, trees (50%) and grassland (43%) within 16 km, and trees (47%) and grassland (47%) within 80 km.

3 km
66 m
16 km
180 m
80 km
557 m
treesshrubsgrasslandcroplandartificial surfaceswater
May weather nearby: Tocantinópolis 2.0 km · Estreito 25 km · Governador Edison Lobão 66 km · Imperatriz 91 km · Sítio Novo 93 km · João Lisboa 99 km · Araguatins 110 km · Carolina 111 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 Porto Franco (-6.3383°, -47.3992°, elevation 165 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).