Richmond (USA) vs Rio de Janeiro (Brazil): Temperature, Rainfall and Sunshine
Rio de Janeiro (Brazil) has a higher monthly mean temperature than Richmond (USA) in every month of the year.
| Key monthly differences | Richmond | Rio de Janeiro |
|---|---|---|
| Warmest months (mean temperature) (°C) | September: 18.93 | January: 27.36 |
| Coolest months (mean temperature) (°C) | January: 10.03 | July: 20.62 |
| Months with the lowest daily rainfall average (mm/day) | August: 0.01 | June: 1.47 |
| Months with the most daily sunshine (hours/day) | June: 13.07 | December: 10.34 |
Climate comparison questions
When are the temperatures most similar and most different?
The smallest difference in monthly mean temperature is 2.65 °C (August); the largest is 17.33 °C (January).
How much do temperatures vary across the year?
The difference between the warmest and coolest monthly means is 8.90 °C in Richmond (USA) and 6.74 °C in Rio de Janeiro (Brazil). This describes seasonal variation, not the range between daytime highs and nighttime lows.
Which location has more rainfall?
Richmond (USA) has a higher daily rainfall average in 0 months and Rio de Janeiro (Brazil) in 12; 0 months are equal at the displayed precision. Rainfall amounts do not tell us how many days it rains.
Which location has more sunshine?
Richmond (USA) has more average sunshine hours per day in 7 months and Rio de Janeiro (Brazil) in 5; 0 months are equal at the displayed precision. Sunshine duration is different from daylight duration.
Data and measurement guide
Daily values are averaged separately for each calendar month over the saved reference period. Temperatures are daily means, not daytime highs. Rainfall is an average daily amount, not a monthly total; sunshine is average hours per day. These historical averages are not a weather forecast. Each location’s reference period is listed below and may differ.
- Richmond (USA) — Reference period: 2013–2023
- Rio de Janeiro (Brazil) — Reference period: 2013–2023
Monthly climate data
Difference: Rio de Janeiro (Brazil) minus Richmond (USA)
Temperature °C
| Month | Richmond | Rio de Janeiro | +/- |
|---|---|---|---|
| Jan | 10.03 | 27.36 | 17.33 |
| Feb | 11.07 | 26.96 | 15.89 |
| Mar | 12.25 | 26.20 | 13.94 |
| Apr | 14.08 | 24.08 | 10.00 |
| May | 15.68 | 21.98 | 6.30 |
| Jun | 17.69 | 21.09 | 3.40 |
| Jul | 17.74 | 20.62 | 2.88 |
| Aug | 18.36 | 21.01 | 2.65 |
| Sep | 18.93 | 22.75 | 3.82 |
| Oct | 17.20 | 23.77 | 6.57 |
| Nov | 12.99 | 24.21 | 11.23 |
| Dec | 10.05 | 25.94 | 15.88 |
| ⌀ Month | 14.67 | 23.83 | 9.16 |
Average sunshine (hours/day)
| Month | Richmond | Rio de Janeiro | +/- |
|---|---|---|---|
| Jan | 6.78 | 10.28 | 3.50 |
| Feb | 8.26 | 10.03 | 1.77 |
| Mar | 9.05 | 9.97 | 0.92 |
| Apr | 11.01 | 9.43 | -1.58 |
| May | 12.31 | 8.85 | -3.46 |
| Jun | 13.07 | 8.62 | -4.45 |
| Jul | 12.96 | 8.78 | -4.19 |
| Aug | 12.06 | 8.53 | -3.53 |
| Sep | 11.12 | 9.07 | -2.06 |
| Oct | 9.39 | 8.99 | -0.39 |
| Nov | 7.86 | 9.31 | 1.45 |
| Dec | 6.20 | 10.34 | 4.15 |
| ⌀ Month | 10.01 | 9.35 | -0.66 |
Average daily rainfall (mm/day)
| Month | Richmond | Rio de Janeiro | +/- |
|---|---|---|---|
| Jan | 3.32 | 4.99 | 1.68 |
| Feb | 2.98 | 5.10 | 2.11 |
| Mar | 2.81 | 3.90 | 1.09 |
| Apr | 0.97 | 2.90 | 1.93 |
| May | 0.50 | 2.01 | 1.50 |
| Jun | 0.09 | 1.47 | 1.38 |
| Jul | 0.04 | 1.48 | 1.44 |
| Aug | 0.01 | 1.85 | 1.83 |
| Sep | 0.13 | 2.10 | 1.98 |
| Oct | 0.99 | 2.60 | 1.61 |
| Nov | 1.53 | 4.43 | 2.91 |
| Dec | 3.67 | 3.80 | 0.13 |
| ⌀ Month | 1.42 | 3.05 | 1.63 |
Snow (mm)
| Month | Richmond | Rio de Janeiro | +/- |
|---|---|---|---|
| Jan | 0.00 | 0.00 | 0.00 |
| Feb | 0.02 | 0.00 | -0.02 |
| Mar | 0.01 | 0.00 | -0.01 |
| Apr | 0.00 | 0.00 | 0.00 |
| May | 0.00 | 0.00 | 0.00 |
| Jun | 0.00 | 0.00 | 0.00 |
| Jul | 0.00 | 0.00 | 0.00 |
| Aug | 0.00 | 0.00 | 0.00 |
| Sep | 0.00 | 0.00 | 0.00 |
| Oct | 0.00 | 0.00 | 0.00 |
| Nov | 0.00 | 0.00 | 0.00 |
| Dec | 0.00 | 0.00 | 0.00 |
| ⌀ Month | 0.00 | 0.00 | -0.00 |
