Warmest months (mean temperature) (°C)
- London
- July: 18.57
- Saint Louis
- October, November: 27.68
London (Great Britain) vs Saint Louis (Brazil): Temperature, Rainfall and Sunshine
Saint Louis (Brazil) has a higher monthly mean temperature than London (Great Britain) in every month of the year.
Key monthly differences
Coolest months (mean temperature) (°C)
- London
- January: 4.73
- Saint Louis
- March: 26.00
Months with the lowest daily rainfall average (mm/day)
- London
- April: 1.33
- Saint Louis
- September: 1.07
Months with the most daily sunshine (hours/day)
- London
- July: 10.94
- Saint Louis
- September: 11.37
Compare the climate of two locations
Climate comparison questions
When are the temperatures most similar and most different?
The smallest difference in monthly mean temperature is 8.16 °C (July); the largest is 21.82 °C (January).
How much do temperatures vary across the year?
The difference between the warmest and coolest monthly means is 13.84 °C in London (Great Britain) and 1.68 °C in Saint Louis (Brazil). This describes seasonal variation, not the range between daytime highs and nighttime lows.
Which location has more rainfall?
London (Great Britain) has a higher daily rainfall average in 3 months and Saint Louis (Brazil) in 9; 0 months are equal at the displayed precision. Rainfall amounts do not tell us how many days it rains.
Which location has more sunshine?
London (Great Britain) has more average sunshine hours per day in 2 months and Saint Louis (Brazil) in 10; 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.
- London (Great Britain) — Reference period: 2013–2023
- Saint Louis (Brazil) — Reference period: 2013–2023
Monthly climate data
Difference: Saint Louis (Brazil) minus London (Great Britain)
Temperature °C
| Month | London | Saint Louis | +/- |
|---|---|---|---|
| Jan | 4.73 | 26.55 | 21.82 |
| Feb | 5.44 | 26.19 | 20.75 |
| Mar | 6.84 | 26.00 | 19.17 |
| Apr | 9.18 | 26.17 | 16.99 |
| May | 12.67 | 26.55 | 13.88 |
| Jun | 16.27 | 26.62 | 10.35 |
| Jul | 18.57 | 26.73 | 8.16 |
| Aug | 17.74 | 27.17 | 9.44 |
| Sep | 15.48 | 27.42 | 11.93 |
| Oct | 12.31 | 27.68 | 15.37 |
| Nov | 8.09 | 27.68 | 19.59 |
| Dec | 6.52 | 27.45 | 20.94 |
| ⌀ Month | 11.15 | 26.85 | 15.70 |
Average sunshine (hours/day)
| Month | London | Saint Louis | +/- |
|---|---|---|---|
| Jan | 3.74 | 9.75 | 6.01 |
| Feb | 5.11 | 8.98 | 3.86 |
| Mar | 6.38 | 8.60 | 2.22 |
| Apr | 9.22 | 9.07 | -0.15 |
| May | 10.11 | 9.89 | -0.21 |
| Jun | 10.51 | 10.80 | 0.28 |
| Jul | 10.94 | 11.01 | 0.07 |
| Aug | 9.68 | 11.29 | 1.61 |
| Sep | 8.02 | 11.37 | 3.35 |
| Oct | 5.86 | 11.27 | 5.41 |
| Nov | 4.12 | 10.91 | 6.79 |
| Dec | 3.14 | 10.39 | 7.24 |
| ⌀ Month | 7.24 | 10.28 | 3.04 |
Average daily rainfall (mm/day)
| Month | London | Saint Louis | +/- |
|---|---|---|---|
| Jan | 1.92 | 8.79 | 6.87 |
| Feb | 1.71 | 12.54 | 10.83 |
| Mar | 1.61 | 15.21 | 13.61 |
| Apr | 1.33 | 13.03 | 11.70 |
| May | 1.85 | 9.36 | 7.51 |
| Jun | 1.93 | 4.36 | 2.43 |
| Jul | 1.79 | 2.71 | 0.91 |
| Aug | 2.02 | 1.51 | -0.51 |
| Sep | 1.61 | 1.07 | -0.54 |
| Oct | 2.51 | 1.12 | -1.39 |
| Nov | 2.27 | 2.56 | 0.29 |
| Dec | 2.10 | 4.11 | 2.00 |
| ⌀ Month | 1.89 | 6.36 | 4.48 |
Snow (mm)
| Month | London | Saint Louis | +/- |
|---|---|---|---|
| Jan | 0.94 | 0.00 | -0.94 |
| Feb | 0.76 | 0.00 | -0.76 |
| Mar | 0.77 | 0.00 | -0.77 |
| Apr | 0.05 | 0.00 | -0.05 |
| 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 | 0.04 | 0.00 | -0.04 |
| Dec | 0.40 | 0.00 | -0.40 |
| ⌀ Month | 0.25 | 0.00 | -0.25 |
