Climate averages 1991–2020
Três Rios weather
in July.
A warm, fairly dry month: the coolest and the 2nd driest of the year. Meets the pleasant-weather rule
Long-term climate patterns, not a forecast for a particular trip.
July is a warm month in Três Rios: daytime highs average 24.3°C and nights cool to about 14.9°C. By daytime temperature it is the coolest month of the year.
Expect about 18 mm of rain on roughly 4 days, which makes July a fairly dry month (the 2nd driest of the 12 months). Daylight, from sunrise to sunset, lasts about 10 h 55 min on an average July day.
The nearest other city in this atlas is Teresópolis (41 km away). In July its highs average 20.7°C, 3.6°C cooler than Três Rios, with 48 mm of rain.
Among the 448 cities listed in Brazil, Três Rios ranks joint 239th of 448 for the warmest July highs and joint 135th of 448 for the driest July (rainfall, lowest first). The mean July high of those 448 cities is 24.7°C; Três Rios is 0.4°C cooler than that mean.
From July to August, average highs rise by 1.2°C to 25.5°C, and monthly rainfall rises from 18 mm to 21 mm.
The annual picture
July in context
Monthly rainfall
Average total · mmAverages from hourly ERA5 reanalysis data. Actual weather varies from year to year. How these numbers are calculated
Every month, side by side
Três Rios climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 29.6°C21.5°C | 21.5°C | 232 | 19.3 | 13.313 h |
| February | 30.2°C21.5°C | 21.5°C | 156 | 15.0 | 12.813 h |
| March | 28.9°C21.0°C | 21.0°C | 148 | 17.6 | 12.212 h |
| April | 27.4°C19.5°C | 19.5°C | 57 | 9.6 | 11.612 h |
| May | 25.1°C16.7°C | 16.7°C | 35 | 6.3 | 11.111 h |
| June | 24.5°C15.4°C | 15.4°C | 17 | 3.4 | 10.811 h |
| July, selected | 24.3°C14.9°C | 14.9°C | 18 | 3.7 | 10.911 h |
| August | 25.5°C15.3°C | 15.3°C | 21 | 4.3 | 11.411 h |
| September | 26.8°C17.0°C | 17.0°C | 59 | 8.6 | 12.012 h |
| October | 27.8°C18.8°C | 18.8°C | 107 | 13.5 | 12.613 h |
| November | 27.5°C19.7°C | 19.7°C | 198 | 18.8 | 13.213 h |
| December | 28.9°C20.9°C | 20.9°C | 235 | 21.3 | 13.513 h |
Rainfall is the average of the 30 separate monthly totals. A rain day is a local calendar day with at least 1 mm of precipitation. Daylight is the calculated sunrise-to-sunset length, not measured sunshine.
Compare places
July in nearby cities
- Teresópolis in JulyBrazil · 41 kmHigh 20.7°C · Low 12.4°C · 48 mm rain
- Juiz de Fora in JulyBrazil · 42 kmHigh 22.2°C · Low 12.4°C · 23 mm rain
- Petrópolis in JulyBrazil · 43 kmHigh 21.4°C · Low 13.0°C · 39 mm rain
- Valença (Rio de Janeiro), Brazil in JulyBrazil · 53 kmHigh 22.9°C · Low 13.0°C · 26 mm rain
- Magé in JulyBrazil · 62 kmHigh 24.4°C · Low 15.6°C · 49 mm rain
- Nova Friburgo in JulyBrazil · 72 kmHigh 21.5°C · Low 13.3°C · 42 mm rain
- Japeri in JulyBrazil · 74 kmHigh 25.7°C · Low 16.0°C · 40 mm rain
- Barra do Piraí in JulyBrazil · 75 kmHigh 24.0°C · Low 14.4°C · 28 mm rain
Read the numbers correctly
Climate, not a promise.
These patterns help compare months. They cannot tell you the weather on a specific day of your trip.
Sources, method and limitsHow these numbers are made (what the highs, lows and rain days mean, the sources and the model cell used for Três Rios) is explained once on the Três Rios year overview and on the Sources, method and limits page.