Três Rios weather in July

In July, Três Rios sees average daytime highs of 24°C and overnight lows near 14°C, with 18 mm of rain across 3.7 wet days and about 10.8 hours of daylight. It is the 12th-warmest and 11th-wettest month of the year here.

Day-to-day highs hold fairly steady near 24°C through the month. The sky is clear or mostly clear about 44% of the time in July, and the air most often feels comfortable.

Daylight stretches from about 10 h 42 min at the start of July to 11 hours by month's end. Set against the rest of the year, July is Três Rios's 2nd-clearest and 5th-windiest month. For the whole year in context, see Três Rios's year-round climate.

Daytime high
24°
12th warmest
Overnight low
14°
1st coldest
Rainfall
18 mm
3.7 wet days
Daylight
10 h 48 min
7:35 AM – 6:22 PM
Cloud cover
48%
2nd clearest
Wind
7 km/h
5th windiest
Solar energy
3.52 kWh/m²
Travel score
8.2
out of 10

Três Rios is human settlement in 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 24°C through the month.

A typical July day in Três Rios reaches about 24°C in the afternoon and slips back to 14°C overnight — a 10°C spread between the day's warmth and the night's chill. On most days the high lands between 20°C and 28°C. Set against its neighbours, July runs on par with June and about 1°C cooler than August.

10°15°20°25°30°151015202531
Avg high (°C)Avg low (°C)
12414
22414
32414
42414
52414
62414
72414
82414
92414
102414
112414
122414
132414
142414
152414
162414
172414
182414
192414
202414
212414
222414
232414
242414
252414
262414
272414
282414
292414
302414
312414

Três Rios weather by month

How July compares with the rest of the year at a glance. July is the 12th-warmest and 11th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan29° / 20°23319.513.24.1
Feb30° / 20°15415.112.84.3
Mar29° / 20°14817.712.24.5
Apr27° / 18°579.611.56.4
May25° / 16°356.3117.4
Jun24° / 14°173.410.78.2
Jul24° / 14°183.710.88.2
Aug25° / 14°214.211.27.9
Sep26° / 16°598.711.96.8
Oct27° / 18°10713.712.55.8
Nov27° / 19°19818.813.14.8
Dec29° / 20°23621.313.34.2

Cloud cover in July

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 44% of the time in July.

Beyond those clear spells, partly cloudy skies cover about 16% of July, with mostly cloudy or overcast conditions the remaining 40%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
16040
26040
36040
46139
56040
66040
76040
86040
96040
106040
115941
125941
135941
145941
155941
165842
175842
185842
195941
205941
215941
226040
236040
246040
256139
266139
276040
286139
296139
306139
316238

Chance of precipitation in July

Any precipitation

Três Rios gets around 18 mm of rain over 3.7 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 12% and peaks near 14% on the wettest days.

0%10%20%30%151015202531
Rain chance (%)
19
29
39
49
59
610
710
810
911
1011
1111
1211
1312
1412
1512
1612
1712
1812
1913
2013
2113
2213
2313
2413
2513
2614
2714
2814
2914
3014
3113

Humidity in July

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, July lands in the comfortable band about 56% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)
1216217
2226117
3236116
4246016
5255916
6265816
7265915
8275815
9285715
10295714
11295714
12305614
13305614
14305515
15315415
16305515
17305515
18305515
19305515
20305515
21305515
22305515
23305515
24305515
25315514
26315514
27315514
28325414
29325414
30325414
31335314

Wind in July

Winds average 7 km/h in July.

Across July, daily wind ranges from about 7 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
17calm
27calm
37calm
47calm
57calm
67calm
77calm
87calm
97calm
107calm
117calm
127calm
137calm
147calm
157calm
167calm
177calm
187calm
197calm
207calm
217calm
227calm
237calm
247calm
257calm
267calm
277calm
287calm
297calm
307calm
317calm

Sunrise & sunset in July

DaylightNight

Daylight runs from about 10 h 42 min at the start of July to 11 hours by month's end. The lit band spans sunrise to sunset each day.

Days grow by about 18 minutes over July. Sunrise moves from 7:36 AM to 7:30 AM, and sunset from 6:16 PM to 6:28 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
110.77:366:16
210.77:366:16
310.77:366:17
410.77:366:17
510.77:366:17
610.77:366:18
710.77:366:18
810.77:366:18
910.77:366:19
1010.77:366:19
1110.77:366:20
1210.77:366:20
1310.77:366:20
1410.77:366:21
1510.87:366:21
1610.87:356:22
1710.87:356:22
1810.87:356:22
1910.87:356:23
2010.87:346:23
2110.87:346:24
2210.87:346:24
2310.87:336:24
2410.97:336:25
2510.97:336:25
2610.97:326:26
2710.97:326:26
2810.97:326:26
2910.97:316:27
3010.97:316:27
3111.07:306:28

Solar energy in July

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in July, about 3.52 kWh/m².

For context, solar energy here swings from a low near 3.41 kWh/m² to a high of 5.9 kWh/m² in February across the year — July's 3.52 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
113.5Moderate
123.5Moderate
133.5Moderate
143.5Moderate
153.5Moderate
163.5Moderate
173.5Moderate
183.5Moderate
193.5Moderate
203.5Moderate
213.6Moderate
223.6Moderate
233.6Moderate
243.6Moderate
253.7Moderate
263.7Moderate
273.7Moderate
283.7Moderate
293.8Moderate
303.8Moderate
313.8Moderate
Planning a trip in July

Hazard calendar for Três Rios

In seasonPeak

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

Três Rios's monsoon runs October–March, 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 Três Rios?

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

8.2
Sightseeing
1st-best month of the year
7.0
Beach & pool
3rd-best month of the year

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

What to pack for Três Rios in July

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

In July, Três Rios sees daytime highs around 24°C and nights near 14°C. Worth packing: light clothes. About 4 days see rain.

light clothes

UV index in Três Rios in July

LowModerateHighVery highExtreme

Clear-sky midday UV in July peaks around 6 — enough to warrant sun protection. The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Três Rios peaks around February 9 at about 15 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near July 10 at about 6 (high).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeVery highHighVery highExtremeFeb 9UV 15Jul 10UV 6
UV index (midday)Level
Jan15Extreme
Feb15Extreme
Mar13Extreme
Apr10Very high
May7High
Jun6High
Jul6High
Aug8Very high
Sep8Very high
Oct12Extreme
Nov14Extreme
Dec14Extreme

Air quality in Três Rios 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 Três Rios is worst in September — around 22 µg/m³ PM2.5 (moderate), about 2.0× the cleanest month (January, 11 µg/m³).

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

0102030JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateGoodSep 1521 µg/m³Jan 1111 µg/m³
PM2.5 (µg/m³)Level
Jan11Good
Feb11Good
Mar12Good
Apr13Moderate
May15Moderate
Jun15Moderate
Jul14Moderate
Aug16Moderate
Sep22Moderate
Oct14Moderate
Nov12Good
Dec11Good
Location & terrain

Where is Três Rios?

Três Rios sits at 22.1°S, 43.2°W, 276 m above sea level, in Brazil. The nearest listed city is Paraíba do Sul, 10 km away.

Topography around Três Rios

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

Within 3 km, the terrain around Três Rios has significant variations in elevation — a maximum elevation change of 408 m around an average of 338 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 655 m; within 80 km, very significant variations in elevation — a maximum elevation change of 2,252 m.

The land around Três Rios is covered by grassland (52%), trees (24%) and artificial surfaces (22%) within 3 km, grassland (59%) and trees (37%) within 16 km, and trees (49%) and grassland (45%) within 80 km.

3 km
408 m
16 km
655 m
80 km
2,252 m
treesgrasslandartificial surfaceswater
July weather nearby: Paraíba do Sul 10 km · São José do Vale do Rio Preto 30 km · Sapucaia 33 km · Paty do Alferes 41 km · Teresópolis 41 km · Juiz de Fora 42 km · São Pedro 42 km · Petrópolis 43 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 Três Rios (-22.1167°, -43.2092°, elevation 276 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).