Grajaú weather in July

In July, Grajaú sees average daytime highs of 33°C and overnight lows near 21°C, with 5 mm of rain across 0.8 wet days and about 11.7 hours of daylight. It is the 4th-warmest and 11th-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 65% of the time in July, and the air most often feels humid.

Daylight stretches from about 11 h 42 min at the start of July to 11 h 42 min by month's end. Set against the rest of the year, July is Grajaú's 2nd-clearest and 2nd-windiest month. For the whole year in context, see Grajaú's year-round climate.

Daytime high
33°
4th warmest
Overnight low
21°
1st coldest
Rainfall
5 mm
0.8 wet days
Daylight
11 h 42 min
6:19 AM – 6:01 PM
Cloud cover
33%
2nd clearest
Wind
9 km/h
2nd windiest
Solar energy
5.55 kWh/m²
Travel score
4.4
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 Grajaú reaches about 33°C in the afternoon and slips back to 21°C overnight — a 12°C spread between the day's warmth and the night's chill. On most days the high lands between 32°C and 34°C. Set against its neighbours, July runs about 1°C warmer than June and about 1°C cooler than August.

15°20°25°30°35°151015202531
Avg high (°C)Avg low (°C)
13321
23321
33321
43321
53321
63321
73321
83321
93321
103321
113321
123321
133321
143321
153321
163321
173321
183321
193321
203321
213321
223321
233321
243321
253321
263321
273321
283421
293421
303421
313421

How July really feels in Grajaú

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.

Grajaú weather by month

How July compares with the rest of the year at a glance. July is the 4th-warmest and 11th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan31° / 23°17224.812.33.0
Feb30° / 22°17523.912.22.9
Mar31° / 23°18826.1122.9
Apr31° / 23°13220.411.93.3
May31° / 22°6410.511.74.2
Jun32° / 22°81.611.74.8
Jul33° / 21°50.811.74.4
Aug34° / 22°20.311.83.8
Sep35° / 23°91.7123.4
Oct34° / 24°325.312.13.4
Nov33° / 24°7811.912.33.4
Dec32° / 23°13517.712.33.3

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 23% of July, with mostly cloudy or overcast conditions the remaining 12%. Skies tend to open up as the month goes on.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
18713
28713
38713
48713
58614
68614
78614
88614
98614
108614
118614
128614
138614
148614
158614
168713
178812
188812
198812
208812
218911
228911
238911
249010
259010
26919
27919
28919
29919
30928
31928

Chance of precipitation in July

Any precipitation

Grajaú gets around 5 mm of rain over 0.8 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 3% and peaks near 4% on the wettest days.

0%10%20%30%151015202531
Rain chance (%)
14
24
34
44
54
64
74
83
93
103
113
123
133
143
153
163
173
183
193
202
212
222
232
242
252
262
272
282
291
301
311

Humidity in July

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, July lands in the humid band about 42% of days. Sticky, muggy-or-worse air turns up on roughly 49% of them.

0%25%50%75%100%151015202531
Comfortable (%)Humid (%)Muggy (%)Oppressive (%)
12315314
22325214
32335213
42335213
53345112
63355012
73354912
84364911
94374811
104384711
115394611
125404510
136414310
146424210
157424110
16843409
17844399
18945388
191046368
201146357
211247347
221348327
231448316
241548306
251649306
261748296
271848295
281948285
291947285
302047285
312047285

Wind in July

Winds average 9 km/h in July.

Across July, 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
179calm
189calm
199calm
2010calm
2110calm
2210calm
2310calm
2410calm
2510calm
2610calm
2710calm
2810calm
2910calm
3010calm
3110calm

Sunrise & sunset in July

DaylightNight

Daylight runs from about 11 h 42 min at the start of July to 11 h 42 min by month's end. The lit band spans sunrise to sunset each day.

Days grow by about 0 minutes over July. Sunrise moves from 6:18 AM to 6:18 AM, and sunset from 5:58 PM to 6:03 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
111.76:185:58
211.76:185:58
311.76:185:58
411.76:185:59
511.76:185:59
611.76:195:59
711.76:195:59
811.76:195:59
911.76:196:00
1011.76:196:00
1111.76:196:00
1211.76:196:00
1311.76:196:00
1411.76:196:01
1511.76:196:01
1611.76:196:01
1711.76:196:01
1811.76:196:01
1911.76:196:01
2011.76:196:02
2111.76:196:02
2211.76:196:02
2311.76:196:02
2411.76:196:02
2511.76:196:02
2611.76:196:02
2711.76:196:03
2811.76:196:03
2911.76:196:03
3011.76:196:03
3111.76:186:03

Solar energy in July

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in July, about 5.55 kWh/m².

For context, solar energy here swings from a low near 4.51 kWh/m² to a high of 6.39 kWh/m² in September across the year — July's 5.55 kWh/m² falls in the middle.

0246151015202531
Solar energy (kWh/m²)Level
15.3Bright
25.3Bright
35.3Bright
45.3Bright
55.3Bright
65.3Bright
75.3Bright
85.4Bright
95.4Bright
105.4Bright
115.4Bright
125.4Bright
135.5Bright
145.5Bright
155.5Bright
165.5Bright
175.5Bright
185.6Bright
195.6Bright
205.6Bright
215.7Bright
225.7Bright
235.7Bright
245.7Bright
255.8Bright
265.8Bright
275.8Bright
285.9Bright
295.9Bright
305.9Bright
315.9Bright
Planning a trip in July

Hazard calendar for Grajaú

In seasonPeak

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

Grajaú's monsoon runs December–April, 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 Grajaú?

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

4.4
Sightseeing
2nd-best month of the year
7.9
Beach & pool
1st-best month of the year

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

What to pack for Grajaú in July

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

In July, Grajaú sees daytime highs around 33°C and nights near 21°C. Pack light clothes. Worth having: sun protection.

light clothessun protection

UV index in Grajaú 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 Grajaú peaks around March 12 at about 15 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near July 12 at about 10 (extreme).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeMar 12UV 15Jul 12UV 10
UV index (midday)Level
Jan14Extreme
Feb15Extreme
Mar15Extreme
Apr14Extreme
May11Extreme
Jun10Extreme
Jul10Very high
Aug11Extreme
Sep12Extreme
Oct12Extreme
Nov12Extreme
Dec10Extreme

Air quality in Grajaú 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 Grajaú is worst in October — around 28 µg/m³ PM2.5 (moderate), about 4.5× the cleanest month (June, 6 µg/m³).

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

0102030JanFebMarAprMayJunJulAugSepOctNovDecModerateGoodModerateOct 1227 µg/m³Jun 176 µg/m³
PM2.5 (µg/m³)Level
Jan13Moderate
Feb12Good
Mar12Good
Apr11Good
May9Good
Jun6Good
Jul8Good
Aug17Moderate
Sep26Moderate
Oct28Moderate
Nov22Moderate
Dec17Moderate
Location & terrain

Where is Grajaú?

Grajaú sits at 5.8°S, 46.1°W, 163 m above sea level, in Brazil. The nearest listed city is Sítio Novo, 62 km away.

Topography around Grajaú

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

Within 3 km, the terrain around Grajaú has only modest variations in elevation — a maximum elevation change of 115 m around an average of 193 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 218 m; within 80 km, significant variations in elevation — a maximum elevation change of 593 m.

The land around Grajaú is covered by trees (53%), grassland (24%) and artificial surfaces (20%) within 3 km, trees (58%) and grassland (33%) within 16 km, and trees (66%) and grassland (26%) within 80 km.

3 km
115 m
16 km
218 m
80 km
593 m
treesshrubsgrasslandcroplandartificial surfaces
July weather nearby: Sítio Novo 62 km · Formosa da Serra Negra 70 km · Amarante do Maranhão 72 km · Jenipapo dos Vieiras 75 km · Arame 105 km · Barra do Corda 105 km · Governador Edison Lobão 136 km · João Lisboa 146 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 Grajaú (-5.8194°, -46.1386°, elevation 163 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).