Barreirinhas weather in July

In July, Barreirinhas sees average daytime highs of 31°C and overnight lows near 25°C, with 38 mm of rain across 6.8 wet days and about 11.9 hours of daylight. It is the 6th-warmest and 7th-wettest month of the year here.

Day-to-day highs hold fairly steady near 31°C through the month. The sky is clear or mostly clear about 65% of the time in July, and the air most often feels oppressive.

Daylight stretches from about 11 h 48 min at the start of July to 11 h 54 min by month's end. Set against the rest of the year, July is Barreirinhas's 4th-clearest and 7th-windiest month. For the whole year in context, see Barreirinhas's year-round climate.

Daytime high
31°
6th warmest
Overnight low
25°
4th coldest
Rainfall
38 mm
6.8 wet days
Daylight
11 h 54 min
6:01 AM – 5:53 PM
Cloud cover
37%
4th clearest
Wind
13 km/h
7th windiest
Solar energy
5.63 kWh/m²
Travel score
5.1
out of 10

Barreirinhas is principal settlement in Barreirinhas Municipality, Maranhão, Brazil.

Air quality: WHO Ambient Air Quality Database. Density & description: Wikidata (CC0), GeoNames.

Temperature in July

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 31°C through the month.

A typical July day in Barreirinhas reaches about 31°C in the afternoon and slips back to 25°C overnight — a 7°C spread between the day's warmth and the night's chill. On most days the high lands between 30°C and 32°C. Set against its neighbours, July runs on par with June and about 1°C cooler than August.

20°25°30°35°151015202531
Avg high (°C)Avg low (°C)
13125
23125
33125
43125
53125
63125
73125
83125
93125
103125
113125
123125
133125
143125
153125
163125
173125
183125
193125
203125
213125
223125
233125
243125
253125
263125
273225
283225
293225
303225
313225

How July really feels in Barreirinhas

Once humidity and wind are folded in, July 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 July is heat — humidity pushes the afternoon "feels like" well above the raw temperature.

Barreirinhas weather by month

How July compares with the rest of the year at a glance. July 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
Jan31° / 25°14021.612.13.4
Feb30° / 24°20424.212.13.1
Mar30° / 24°27829122.8
Apr30° / 24°30327.211.92.9
May30° / 25°19222.111.93.5
Jun31° / 25°6613.111.84.6
Jul31° / 25°386.811.95.1
Aug32° / 25°71.511.95.1
Sep32° / 25°30.8125.1
Oct32° / 25°60.812.15.1
Nov32° / 26°112.412.14.9
Dec32° / 25°378.412.24.4

Cloud cover in July

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 65% of the time in July.

Beyond those clear spells, partly cloudy skies cover about 20% of July, with mostly cloudy or overcast conditions the remaining 14%. Skies tend to open up as the month goes on.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
18218
28218
38317
48317
58317
68317
78317
88317
98416
108416
118416
128416
138416
148416
158416
168515
178515
188515
198614
208713
218713
228713
238812
248812
259010
269010
279010
28919
29919
30919
31928

Chance of precipitation in July

Any precipitation

Barreirinhas gets around 38 mm of rain over 6.8 wet days in July. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 22% and peaks near 33% on the wettest days. The odds ease toward the end of the month.

0%10%20%30%40%151015202531
Rain chance (%)
133
233
332
432
531
631
730
830
929
1029
1128
1227
1326
1425
1524
1623
1722
1821
1920
2018
2117
2216
2315
2414
2514
2613
2712
2811
2910
3010
319

Humidity in July

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, July 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 (%)
10919
20928
30937
40937
50946
60946
71945
81945
91954
101954
111954
121963
131963
142953
152953
162953
172953
183952
193952
204942
214942
225932
235941
246931
256931
266931
276931
287921
297930
307930
317930

Wind in July

Winds average 13 km/h in July.

Across July, daily wind ranges from about 12 km/h on the calmest days to 14 km/h at its breeziest. It stays fairly steady from day to day.

05101520151015202531
Wind speed (km/h)Feels
112light breeze
213light breeze
313light breeze
413light breeze
513light breeze
613light breeze
713light breeze
813light breeze
913light breeze
1013light breeze
1113light breeze
1213light breeze
1313light breeze
1413light breeze
1513light breeze
1613light breeze
1713light breeze
1813light breeze
1913light breeze
2013light breeze
2113light breeze
2214light breeze
2314light breeze
2414light breeze
2514light breeze
2614light breeze
2714light breeze
2814light breeze
2914light breeze
3014light breeze
3114light breeze

Sunrise & sunset in July

DaylightNight

Daylight runs from about 11 h 48 min at the start of July to 11 h 54 min by month's end. The lit band spans sunrise to sunset each day.

Days grow by about 6 minutes over July. Sunrise moves from 5:59 AM to 6:01 AM, and sunset from 5:50 PM to 5:54 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
111.85:595:50
211.86:005:50
311.86:005:50
411.86:005:51
511.86:005:51
611.86:005:51
711.86:005:51
811.86:005:51
911.86:015:51
1011.86:015:52
1111.86:015:52
1211.96:015:52
1311.96:015:52
1411.96:015:52
1511.96:015:52
1611.96:015:53
1711.96:015:53
1811.96:015:53
1911.96:015:53
2011.96:015:53
2111.96:015:53
2211.96:015:53
2311.96:015:53
2411.96:015:53
2511.96:015:53
2611.96:015:54
2711.96:015:54
2811.96:015:54
2911.96:015:54
3011.96:015:54
3111.96:015:54

Solar energy in July

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in July, about 5.63 kWh/m².

For context, solar energy here swings from a low near 4.86 kWh/m² to a high of 6.8 kWh/m² in October across the year — July's 5.63 kWh/m² falls in the middle.

0246151015202531
Solar energy (kWh/m²)Level
15.4Bright
25.4Bright
35.4Bright
45.5Bright
55.5Bright
65.5Bright
75.5Bright
85.5Bright
95.5Bright
105.5Bright
115.5Bright
125.5Bright
135.6Bright
145.6Bright
155.6Bright
165.6Bright
175.6Bright
185.7Bright
195.7Bright
205.7Bright
215.7Bright
225.8Bright
235.8Bright
245.8Bright
255.8Bright
265.8Bright
275.9Bright
285.9Bright
295.9Bright
305.9Bright
316.0Bright
Planning a trip in July

Hazard calendar for Barreirinhas

In seasonPeak

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

Barreirinhas'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 July a good time to visit Barreirinhas?

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

5.1
Sightseeing
1st-best month of the year
7.5
Beach & pool
5th-best month of the year

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

What to pack for Barreirinhas in July

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

In July, Barreirinhas sees daytime highs around 31°C and nights near 25°C. Pack light clothes. Worth having: sun protection. About 7 days see rain.

light clothessun protection

Sea temperature near Barreirinhas in July

The nearest coast averages about 28°C in July — the other half of the beach question. The full-year curve and swim-comfort zones are below.

The sea at the nearest coast (about 27 km away) is warmest in April at about 29°C and coldest in September 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
Jun29Tropical
Jul28Warm
Aug27Warm
Sep27Warm
Oct27Warm
Nov28Warm
Dec28Warm

UV index in Barreirinhas in July

LowModerateHighVery highExtreme

Clear-sky midday UV in July peaks around 10 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Barreirinhas peaks around March 16 at about 16 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near July 15 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 16Jul 15UV 10
UV index (midday)Level
Jan13Extreme
Feb14Extreme
Mar16Extreme
Apr14Extreme
May12Extreme
Jun10Extreme
Jul10Extreme
Aug11Extreme
Sep12Extreme
Oct12Extreme
Nov11Extreme
Dec12Extreme

Air quality in Barreirinhas in July

GoodModeratePoorUnhealthyVery unhealthy

Average fine-particle pollution (PM2.5) through the year — so you can see where July falls, not just the annual average.

Air quality in Barreirinhas is worst in July — around 20 µg/m³ PM2.5 (moderate), about 2.4× the cleanest month (May, 8 µg/m³).

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

0102030JanFebMarAprMayJunJulAugSepOctNovDecModerateGoodModerateGoodModerateJul 1719 µg/m³May 219 µg/m³
PM2.5 (µg/m³)Level
Jan12Moderate
Feb15Moderate
Mar14Moderate
Apr11Good
May8Good
Jun9Good
Jul20Moderate
Aug12Good
Sep9Good
Oct11Good
Nov14Moderate
Dec14Moderate
Location & terrain

Where is Barreirinhas?

Barreirinhas sits at 2.8°S, 42.8°W, 5 m above sea level, in Brazil. The nearest listed city is Paulino Neves, 33 km away.

Topography around Barreirinhas

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

Within 3 km, the terrain around Barreirinhas has only modest variations in elevation — a maximum elevation change of 25 m around an average of 8 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 76 m; within 80 km, only modest variations in elevation — a maximum elevation change of 138 m.

The land around Barreirinhas is covered by grassland (36%) and trees (29%) within 3 km, trees (46%) and grassland (20%) within 16 km, and trees (39%) and water (30%) within 80 km.

3 km
25 m
16 km
76 m
80 km
138 m
treesshrubsgrasslandartificial surfacesbare terrainwaterwetlandmangroves
July weather nearby: Paulino Neves 33 km · Tutóia 61 km · Humberto de Campos 73 km · São Bernardo 81 km · Urbano Santos 82 km · Santa Quitéria do Maranhão 87 km · Luzilândia 93 km · São Benedito do Rio Preto 101 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 Barreirinhas (-2.7556°, -42.8259°, elevation 5 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. 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).