Climate Chart of Rio de Janeiro, Brazil
Monthly data: Temperature °C, Rain (mm), Sunshine (h) · 2013–2023
For Rio de Janeiro, Brazil, the climate data cover 2013–2023. Across the period, monthly mean temperatures average 23.8 °C, with the highest monthly mean in January at 27.4 °C and the lowest in July at 20.6 °C. Mean daily rainfall and sunshine also vary by month, so the averages provide a broad guide rather than a forecast for any particular visit.
Climate overview
Temperature
Monthly mean temperatures are highest in January, at 27.4 °C, and lowest in July, at 20.6 °C. These figures describe monthly averages, not daytime highs, so they cannot show how warm an individual afternoon may feel. The unweighted mean across the calendar months is 23.8 °C; it gives an overview of the period without implying that each month or day had the same conditions.
Rain
Mean daily rainfall reaches its highest monthly average in February, at 5.10 mm/day, and its lowest in June, at 1.47 mm/day. The unweighted mean of the monthly averages is 3.05 mm/day. These are daily amounts averaged by month, not monthly totals; the lower average does not guarantee rain-free days or indicate how frequently rain occurs. For planning, the figures help identify relative differences in average rainfall, but do not replace checking conditions close to travel.
Sunshine
Mean daily sunshine duration is highest in December, at 10.34 hours/day, and lowest in August, at 8.53 hours/day. Across the monthly means, the unweighted average is 9.35 hours/day per day. These averages can help with broad outdoor-planning expectations, but sunshine duration is not the same as day length and does not promise clear skies on a particular day.
Best Travel Time Guide for Rio de Janeiro, Brazil: Ideal Seasons and Weather Insights
If lower average rainfall is your priority, June is the conditional option indicated by a mean daily amount of 1.47 mm/day; this does not guarantee dry weather, so keep flexible plans and bring rain protection. For preparation around the higher-rainfall average, February records 5.10 mm/day per day on average, which supports packing a lightweight rain layer rather than assuming rain will occur every day. Visitors prioritising cooler monthly-average conditions may prefer July, when the mean is 20.6 °C; this is not a forecast of daytime temperatures. For outdoor sightseeing guided by sunshine averages, December has 10.34 hours/day per day on average, while August has 8.53 hours/day. These are separate criteria rather than a combined best-time ranking, and daily sunshine averages cannot guarantee clear conditions.
Climate Data Overview for Rio de Janeiro, Brazil
Explore the comprehensive climate data for Rio de Janeiro, Brazil. This detailed table provides valuable insights into temperature variations, precipitation levels, and seasonal changes, helping you understand the unique weather patterns of this region.
| Month | Average: Temperature °C | Rain (mm) / day | Snow (mm) / day | Sunshine (h) / day |
|---|---|---|---|---|
| Jan | 27.4 | 4.99 | 0.00 | 10.28 |
| Feb | 27.0 | 5.10 | 0.00 | 10.03 |
| Mar | 26.2 | 3.90 | 0.00 | 9.97 |
| Apr | 24.1 | 2.90 | 0.00 | 9.43 |
| May | 22.0 | 2.01 | 0.00 | 8.85 |
| Jun | 21.1 | 1.47 | 0.00 | 8.62 |
| Jul | 20.6 | 1.48 | 0.00 | 8.78 |
| Aug | 21.0 | 1.85 | 0.00 | 8.53 |
| Sep | 22.8 | 2.10 | 0.00 | 9.07 |
| Oct | 23.8 | 2.60 | 0.00 | 8.99 |
| Nov | 24.2 | 4.43 | 0.00 | 9.31 |
| Dec | 25.9 | 3.80 | 0.00 | 10.34 |
| Average | 23.8 | 3.05 | 0.00 | 9.35 |
