Parnaíba weather in July

In July, Parnaíba sees average daytime highs of 33°C and overnight lows near 24°C, with 16 mm of rain across 2.7 wet days and about 11.8 hours of daylight. It is the 6th-warmest and 8th-wettest month of the year here.

Day-to-day highs hold fairly steady near 33°C through the month. The sky is clear or mostly clear about 63% 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 Parnaíba's 4th-clearest and 7th-windiest month. For the whole year in context, see Parnaíba's year-round climate.

Daytime high
33°
6th warmest
Overnight low
24°
1st coldest
Rainfall
16 mm
2.7 wet days
Daylight
11 h 48 min
5:57 AM – 5:48 PM
Cloud cover
38%
4th clearest
Wind
15 km/h
7th windiest
Solar energy
5.65 kWh/m²
Travel score
4.3
out of 10

Temperature in July

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 33°C through the month.

A typical July day in Parnaíba reaches about 33°C in the afternoon and slips back to 24°C overnight — a 9°C spread between the day's warmth and the night's chill. On most days the high lands between 31°C and 34°C. Set against its neighbours, July runs about 1°C warmer than June and about 1°C cooler than August.

20°25°30°35°151015202531
Avg high (°C)Avg low (°C)
13224
23224
33324
43324
53324
63324
73324
83324
93324
103324
113324
123324
133324
143324
153324
163324
173324
183324
193324
203324
213324
223324
233324
243324
253324
263324
273424
283424
293424
303424
313424

How July really feels in Parnaíba

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.

Parnaíba weather by month

How July compares with the rest of the year at a glance. July is the 6th-warmest and 8th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan32° / 25°1292012.13.1
Feb31° / 25°1702312.12.9
Mar30° / 25°26527.7122.8
Apr30° / 25°26825.911.92.9
May31° / 25°1481811.93.6
Jun32° / 25°317.111.84.4
Jul33° / 24°162.711.84.3
Aug34° / 24°30.511.93.8
Sep35° / 25°10.2123.5
Oct35° / 25°60.712.13.4
Nov34° / 25°71.712.13.5
Dec33° / 25°357.212.23.5

Cloud cover in July

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 63% of the time in July.

Beyond those clear spells, partly cloudy skies cover about 23% of July, with mostly cloudy or overcast conditions the remaining 15%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
18218
28218
38218
48317
58317
68317
78317
88317
98317
108317
118416
128416
138416
148416
158515
168515
178614
188614
198614
208614
218614
228614
238614
248713
258713
268812
278812
288812
298812
308812
318911

Chance of precipitation in July

Any precipitation

Parnaíba gets around 16 mm of rain over 2.7 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 9% and peaks near 15% on the wettest days. The odds ease toward the end of the month.

0%10%20%30%151015202531
Rain chance (%)
115
215
315
414
514
614
713
813
912
1012
1112
1211
1311
1410
1510
169
178
188
197
207
216
226
235
245
254
264
274
283
293
303
313

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 60% of days. Sticky, muggy-or-worse air turns up on roughly 100% of them.

0%25%50%75%100%151015202531
Humid (%)Muggy (%)Oppressive (%)Miserable (%)
1019801
2020791
3020791
4021781
5022771
6023761
7024751
8026740
9027730
10029710
11030700
12032680
13034660
14036640
15038620
16040600
17042580
18044560
19046540
20047530
21149500
22150490
23152470
24153460
25154450
26156430
27256420
28257410
29258400
30259390
31260380

Wind in July

Winds average 15 km/h in July.

Across July, daily wind ranges from about 14 km/h on the calmest days to 16 km/h at its breeziest. It stays fairly steady from day to day.

05101520151015202531
Wind speed (km/h)Feels
114light breeze
214light breeze
314light breeze
414light breeze
514light breeze
614light breeze
714light breeze
814light breeze
914light breeze
1015light breeze
1115light breeze
1215light breeze
1315light breeze
1415light breeze
1515light breeze
1615light breeze
1715light breeze
1815light breeze
1915light breeze
2015light breeze
2115light breeze
2215light breeze
2315light breeze
2415light breeze
2516light breeze
2616light breeze
2716light breeze
2816light breeze
2916light breeze
3016light breeze
3116light 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 5:55 AM to 5:57 AM, and sunset from 5:45 PM to 5:49 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
111.85:555:45
211.85:565:46
311.85:565:46
411.85:565:46
511.85:565:46
611.85:565:46
711.85:565:47
811.85:575:47
911.85:575:47
1011.85:575:47
1111.85:575:47
1211.85:575:48
1311.85:575:48
1411.85:575:48
1511.85:575:48
1611.85:575:48
1711.85:575:48
1811.85:575:48
1911.95:575:49
2011.95:575:49
2111.95:585:49
2211.95:585:49
2311.95:585:49
2411.95:585:49
2511.95:575:49
2611.95:575:49
2711.95:575:49
2811.95:575:49
2911.95:575:49
3011.95:575:49
3111.95:575:49

Solar energy in July

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in July, about 5.65 kWh/m².

For context, solar energy here swings from a low near 4.93 kWh/m² to a high of 6.98 kWh/m² in October across the year — July's 5.65 kWh/m² falls in the middle.

0246151015202531
Solar energy (kWh/m²)Level
15.4Bright
25.4Bright
35.4Bright
45.4Bright
55.5Bright
65.5Bright
75.5Bright
85.5Bright
95.5Bright
105.5Bright
115.5Bright
125.6Bright
135.6Bright
145.6Bright
155.6Bright
165.7Bright
175.7Bright
185.7Bright
195.7Bright
205.7Bright
215.8Bright
225.8Bright
235.8Bright
245.8Bright
255.8Bright
265.9Bright
275.9Bright
285.9Bright
296.0Bright
306.0Bright
316.0Intense
Planning a trip in July

Hazard calendar for Parnaíba

In seasonPeak

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

Parnaíba'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 Parnaíba?

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

4.3
Sightseeing
2nd-best month of the year
7.6
Beach & pool
2nd-best month of the year

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

What to pack for Parnaíba in July

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

In July, Parnaíba sees daytime highs around 33°C and nights near 24°C. Pack light clothes. Worth having: sun protection.

light clothessun protection

Sea temperature near Parnaíba 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 17 km away) is warmest in May 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
Dec28Tropical

UV index in Parnaíba 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 Parnaíba peaks around March 17 at about 15 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near June 23 at about 10 (extreme).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeMar 17UV 15Jun 23UV 10
UV index (midday)Level
Jan13Extreme
Feb14Extreme
Mar15Extreme
Apr14Extreme
May12Extreme
Jun10Extreme
Jul10Extreme
Aug10Extreme
Sep12Extreme
Oct12Extreme
Nov11Extreme
Dec11Extreme

Air quality in Parnaíba 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 Parnaíba is worst in December — around 18 µg/m³ PM2.5 (moderate), about 3.0× the cleanest month (August, 6 µg/m³).

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

01020JanFebMarAprMayJunJulAugSepOctNovDecModerateGoodModerateDec 1217 µg/m³Aug 216 µg/m³
PM2.5 (µg/m³)Level
Jan12Moderate
Feb15Moderate
Mar13Moderate
Apr11Good
May8Good
Jun7Good
Jul9Good
Aug6Good
Sep7Good
Oct10Good
Nov16Moderate
Dec18Moderate
Location & terrain

Where is Parnaíba?

Parnaíba sits at 2.9°S, 41.8°W, 9 m above sea level, in Brazil. The nearest listed city is Ilha Grande, 7.0 km away.

Topography around Parnaíba

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

Within 3 km, the terrain around Parnaíba has only modest variations in elevation — a maximum elevation change of 28 m around an average of 7 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 52 m; within 80 km, large variations in elevation — a maximum elevation change of 919 m.

The land around Parnaíba is covered by grassland (46%) and artificial surfaces (31%) within 3 km, grassland (37%) and trees (29%) within 16 km, and trees (39%) and water (33%) within 80 km.

3 km
28 m
16 km
52 m
80 km
919 m
treesshrubsgrasslandartificial surfacesbare terrainwaterwetlandmangroves
July weather nearby: Ilha Grande 7.0 km · Luís Correia 13 km · Araioses 14 km · Buriti dos Lopes 32 km · Tutóia 58 km · Cocal 68 km · Paulino Neves 87 km · São Bernardo 87 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 Parnaíba (-2.9047°, -41.7767°, elevation 9 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).