São João de Meriti weather in July

In July, São João de Meriti sees average daytime highs of 26°C and overnight lows near 16°C, with 47 mm of rain across 7.2 wet days and about 10.7 hours of daylight. It is the 12th-warmest and 10th-wettest month of the year here.

Day-to-day highs hold fairly steady near 26°C through the month. The sky is clear or mostly clear about 48% of the time in July, and the air most often feels humid.

Daylight stretches from about 10 h 36 min at the start of July to 10 h 54 min by month's end. Set against the rest of the year, July is São João de Meriti's 1st-clearest and 5th-windiest month. For the whole year in context, see São João de Meriti's year-round climate.

Daytime high
26°
12th warmest
Overnight low
16°
1st coldest
Rainfall
47 mm
7.2 wet days
Daylight
10 h 42 min
7:37 AM – 6:21 PM
Cloud cover
44%
1st clearest
Wind
6 km/h
5th windiest
Solar energy
3.43 kWh/m²
Travel score
7.4
out of 10

São João de Meriti is human settlement in Brazil.

Air quality
Moderate
PM2.5 12 µg/m³ · 2015

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 26°C through the month.

A typical July day in São João de Meriti reaches about 26°C in the afternoon and slips back to 16°C overnight — a 9°C spread between the day's warmth and the night's chill. On most days the high lands between 21°C and 30°C. Set against its neighbours, July runs on par with June and on par with August.

10°15°20°25°30°35°151015202531
Avg high (°C)Avg low (°C)
12617
22617
32616
42616
52616
62616
72616
82616
92616
102616
112616
122616
132616
142616
152616
162616
172616
182616
192616
202616
212616
222616
232616
242616
252616
262616
272616
282616
292616
302616
312616

How July really feels in São João de Meriti

Once humidity and wind are folded in, July averages 0 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
0
heat index over the day's high
Days feeling ≤ C
0
wind chill below the day's low

July sits comfortably in between — no days that feel dangerously hot or drop to a hard freeze once humidity and wind are folded in.

São João de Meriti weather by month

How July compares with the rest of the year at a glance. July is the 12th-warmest and 10th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan31° / 23°26621.313.23.2
Feb32° / 23°19717.812.83.3
Mar30° / 22°21621.112.23.7
Apr29° / 21°10613.511.55.2
May26° / 18°7411.110.96.6
Jun26° / 17°477.110.67.3
Jul26° / 16°477.210.77.4
Aug26° / 17°447.511.27.2
Sep27° / 18°8711.111.96.3
Oct28° / 20°12014.412.55.3
Nov28° / 21°2131913.14.4
Dec30° / 22°23721.213.43.6

Cloud cover in July

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 48% of the time in July, the clearest month of the year.

Beyond those clear spells, partly cloudy skies cover about 14% of July, with mostly cloudy or overcast conditions the remaining 38%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
16139
26139
36139
46139
56139
66139
76238
86238
96238
106238
116238
126238
136238
146238
156238
166238
176238
186238
196238
206238
216337
226337
236337
246436
256436
266337
276337
286337
296337
306337
316337

Chance of precipitation in July

Any precipitation

São João de Meriti gets around 47 mm of rain over 7.2 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 23% and peaks near 26% on the wettest days.

0%10%20%30%40%151015202531
Rain chance (%)
123
223
324
424
525
625
726
826
926
1026
1126
1226
1325
1425
1525
1624
1724
1823
1923
2022
2122
2221
2321
2421
2521
2621
2721
2821
2922
3022
3122

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 58% of days. Sticky, muggy-or-worse air turns up on roughly 12% of them.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)Muggy (%)
12176318
22186218
32196217
42216116
52226016
62236015
72246014
82265913
92275912
102275912
112285911
122295910
132295910
142295910
152305810
162305810
172305810
182295910
192295910
203295711
213295711
223295711
233295711
243305611
253305512
263305512
273305512
283305413
293305413
303305314
313305314

Wind in July

Winds average 6 km/h in July.

Across July, daily wind ranges from about 6 km/h on the calmest days to 6 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
206calm
216calm
226calm
236calm
246calm
256calm
266calm
276calm
286calm
296calm
306calm
316calm

Sunrise & sunset in July

DaylightNight

Daylight runs from about 10 h 36 min at the start of July to 10 h 54 min by month's end. The lit band spans sunrise to sunset each day.

Days grow by about 18 minutes over July. Sunrise moves from 7:38 AM to 7:32 AM, and sunset from 6:15 PM to 6:27 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
110.67:386:15
210.67:386:16
310.67:386:16
410.67:386:16
510.67:386:17
610.67:386:17
710.67:386:17
810.77:386:18
910.77:386:18
1010.77:386:18
1110.77:386:19
1210.77:386:19
1310.77:386:20
1410.77:386:20
1510.77:386:20
1610.77:376:21
1710.77:376:21
1810.77:376:22
1910.87:376:22
2010.87:366:23
2110.87:366:23
2210.87:366:23
2310.87:356:24
2410.87:356:24
2510.87:356:25
2610.87:346:25
2710.97:346:26
2810.97:336:26
2910.97:336:26
3010.97:326:27
3110.97:326:27

Solar energy in July

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in July, about 3.43 kWh/m².

For context, solar energy here swings from a low near 3.33 kWh/m² to a high of 5.93 kWh/m² in February across the year — July's 3.43 kWh/m² sits near the bottom.

01234151015202531
Solar energy (kWh/m²)Level
13.4Moderate
23.4Moderate
33.4Moderate
43.4Moderate
53.4Moderate
63.4Moderate
73.4Moderate
83.4Moderate
93.4Moderate
103.4Moderate
113.4Moderate
123.4Moderate
133.4Moderate
143.4Moderate
153.4Moderate
163.4Moderate
173.4Moderate
183.4Moderate
193.5Moderate
203.5Moderate
213.5Moderate
223.5Moderate
233.5Moderate
243.6Moderate
253.6Moderate
263.6Moderate
273.6Moderate
283.6Moderate
293.7Moderate
303.7Moderate
313.7Moderate
Planning a trip in July

Hazard calendar for São João de Meriti

In seasonPeak

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

São João de Meriti's rainy season runs October–March, when most of the year's rain falls.

Rainy season
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec

Is July a good time to visit São João de Meriti?

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

7.4
Sightseeing
1st-best month of the year
6.9
Beach & pool
3rd-best month of the year

July is one of the better times to visit São João de Meriti for general sightseeing. The water and warmth also suit a beach or pool day.

What to pack for São João de Meriti in July

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

In July, São João de Meriti sees daytime highs around 26°C and nights near 16°C. Worth packing: light clothes. About 7 days see rain.

light clothes

Sea temperature near São João de Meriti in July

The nearest coast averages about 22°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 36 km away) is warmest in March at about 26°C and coldest in August near 21°C.

The water stays above 20°C all year — warm enough for a swim any month.

20°22°24°26°JanFebMarAprMayJunJulAugSepOctNovDeccoolrefreshingwarmcomfortable to swim
Sea temperature (°C)Comfort
Jan25Warm
Feb25Warm
Mar26Warm
Apr25Warm
May24Refreshing
Jun23Refreshing
Jul22Refreshing
Aug21Refreshing
Sep21Refreshing
Oct22Refreshing
Nov22Refreshing
Dec24Warm

UV index in São João de Meriti in July

LowModerateHighVery highExtreme

Clear-sky midday UV in July peaks around 5 — enough to warrant sun protection. The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in São João de Meriti peaks around January 13 at about 14 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near July 13 at about 5 (moderate).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeVery highHighExtremeJan 13UV 14Jul 13UV 5
UV index (midday)Level
Jan14Extreme
Feb13Extreme
Mar12Extreme
Apr9Very high
May6High
Jun6High
Jul5Moderate
Aug8Very high
Sep6High
Oct11Extreme
Nov13Extreme
Dec14Extreme

Air quality in São João de Meriti 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 São João de Meriti is worst in July — around 17 µg/m³ PM2.5 (moderate), about 2.0× the cleanest month (December, 8 µg/m³).

Seasonal pattern from CAMS reanalysis, scaled to São João de Meriti's WHO annual average of 12 µg/m³.

01020JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateGoodJul 1217 µg/m³Dec 238 µg/m³
PM2.5 (µg/m³)Level
Jan8Good
Feb8Good
Mar9Good
Apr11Good
May14Moderate
Jun16Moderate
Jul17Moderate
Aug14Moderate
Sep17Moderate
Oct11Good
Nov9Good
Dec8Good
Location & terrain

Where is São João de Meriti?

São João de Meriti sits at 22.8°S, 43.4°W, 14 m above sea level, in Brazil. The nearest listed city is Nilópolis, 4.0 km away.

Topography around São João de Meriti

How much the land rises and falls, and what covers it, within 3, 16 and 80 km of São João de Meriti.

Within 3 km, the terrain around São João de Meriti has only modest variations in elevation — a maximum elevation change of 154 m around an average of 27 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 956 m; within 80 km, very significant variations in elevation — a maximum elevation change of 2,224 m.

The land around São João de Meriti is covered by artificial surfaces (88%) within 3 km, artificial surfaces (52%) and trees (28%) within 16 km, and trees (37%), water (31%) and grassland (24%) within 80 km.

3 km
154 m
16 km
956 m
80 km
2,224 m
treesgrasslandartificial surfacesbare terrainwaterwetlandmangroves
July weather nearby: Nilópolis 4.0 km · Belford Roxo 5.0 km · Duque de Caxias 7.0 km · Nova Iguaçu 9.0 km · Queimados 21 km · Estácio 21 km · Barra da Tijuca 22 km · Rio de Janeiro 23 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 São João de Meriti (-22.8039°, -43.3722°, elevation 14 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).