Measured, not vibes
Best Time to Visit Rio de Janeiro
By measured weather comfort, the top months for Rio de Janeiro are July, August, June — and RouteVerdict's editorial pick, which also weighs crowds and prices, is February, May, June, September, October, November. The table below is computed from ERA5 reanalysis data for 2020–2024, measured at Rio de Janeiro (12 m elevation).
Month by month
Rio de Janeiro weather and comfort, 2020–2024
| Month | Avg high | Wet days | Comfort | Season |
|---|---|---|---|---|
| January | 29.3°C / 85°F | 13.3 | 58 | |
| February | 29.2°C / 85°F | 13.2 | 58 | |
| March | 29.1°C / 84°F | 8.8 | 66 | Shoulder |
| April | 26.8°C / 80°F | 10.5 | 72 | Shoulder |
| May | 25.8°C / 78°F | 6.8 | 82 | |
| June | 25.4°C / 78°F | 7.3 | 82 | Best |
| July | 24.9°C / 77°F | 5.5 | 87 | Best |
| August | 25.2°C / 77°F | 7.2 | 83 | Best |
| September | 26.7°C / 80°F | 6.7 | 80 | |
| October | 26.4°C / 80°F | 12.7 | 70 | |
| November | 26.7°C / 80°F | 12 | 70 | |
| December | 28.3°C / 83°F | 14.2 | 60 |
Comfort is RouteVerdict's 0–100 score: 100·exp(−(high−23)²/162) × (1 − min(0.35, wet days × 0.02)). The full method is on the methodology page. Weather data by Open-Meteo.com (ERA5, CC BY 4.0), 2020–2024 normals. Wet day = ≥1 mm precipitation.
What the seasons are actually like
Traveling to Rio de Janeiro month by month
Rio's measured comfort peaks in the cooler, drier months of June through August, when highs of 24.9–25.4°C and as few as 5.5–7.3 wet days a month push comfort scores to 82.4–87 — July alone hits 87, the highest of the year. But RouteVerdict's editorial pick also includes February, despite its lower comfort score of 58.1, because that's Carnival season — a genuinely different kind of trip where the event outweighs the weather. September through November offers a middle ground: comfort scores from 69.5 to 79.6 with fewer crowds than Carnival or New Year's. December and January bring the hottest, most humid stretch (comfort 57.5–60.2) and the biggest crowds for the holidays and New Year's Eve on Copacabana.
FAQ
Rio de Janeiro timing questions
What is the best month to visit Rio de Janeiro?
By measured weather comfort (ERA5 2020–2024), the top months are July, August, and June, with July scoring highest. RouteVerdict's editorial pick is February, May, June, September, October, and November, which also weighs crowds, prices, and events.
What is the hottest month in Rio de Janeiro?
January, with an average daily high of 29.3°C (85°F).
What is the rainiest month in Rio de Janeiro?
December, averaging 14.2 days with at least 1 mm of precipitation.
When is shoulder season in Rio de Janeiro?
April and March — the best-scoring months outside both the measured top three and RouteVerdict's editorial peak-season pick.
Why does RouteVerdict recommend February for Rio if the weather comfort score is lower?
February's comfort score is 58.1, well below the July peak of 87, but it's Carnival season — an event RouteVerdict weighs alongside pure weather comfort when making the editorial pick.
What's the single best month for weather in Rio de Janeiro?
July, with an average high of 24.9°C, only 5.5 wet days, and a comfort score of 87 — the highest of any month measured.