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Byumba, Rwanda climate
Cwb Subtropical highland (dry winter)
Byumba has a remarkably steady mild-temperate climate (Subtropical highland (dry winter), Köppen Cwb). The hottest month is February with an average daily high near 77°F, while the coldest is July averaging around 52°F at night. Precipitation totals about 59 inches a year and is strongly seasonal — April alone averages 8.8 inches while July barely receives 0.49 inches.
Temperature & precipitation
Daily high–low temperature range with the monthly average, plus monthly precipitation · 1991–2020 normals · hover a month for the exact figuresHours of sunshine per day
Estimated sunny hours each month — daylight length × clear-sky fraction · 1991–2020 monthly cloud cover (NASA POWER)Byumba climate normals (1991–2020)
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high (°F) | 75 | 77 | 76 | 74 | 72 | 72 | 73 | 75 | 75 | 74 | 73 | 74 |
| Avg temp (°F) | 66 | 67 | 66 | 65 | 64 | 63 | 63 | 64 | 65 | 65 | 65 | 65 |
| Avg low (°F) | 56 | 56 | 56 | 56 | 55 | 53 | 52 | 54 | 56 | 56 | 56 | 56 |
| Precipitation (in) | 4.3 | 4.8 | 7.5 | 8.8 | 6.0 | 1.3 | 0.5 | 2.0 | 3.9 | 6.8 | 7.3 | 5.4 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Avg high (°F) | 75 | 77 | 76 | 74 | 72 | 72 |
| Avg temp (°F) | 66 | 67 | 66 | 65 | 64 | 63 |
| Avg low (°F) | 56 | 56 | 56 | 56 | 55 | 53 |
| Precipitation (in) | 4.3 | 4.8 | 7.5 | 8.8 | 6.0 | 1.3 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Avg high (°F) | 73 | 75 | 75 | 74 | 73 | 74 |
| Avg temp (°F) | 63 | 64 | 65 | 65 | 65 | 65 |
| Avg low (°F) | 52 | 54 | 56 | 56 | 56 | 56 |
| Precipitation (in) | 0.5 | 2.0 | 3.9 | 6.8 | 7.3 | 5.4 |
Sky & atmosphere
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Cloud cover (%) | 75 | 77 | 81 | 83 | 75 | 61 | 57 | 67 | 74 | 81 | 82 | 77 |
| Relative humidity (%) | 76 | 73 | 77 | 83 | 85 | 78 | 72 | 71 | 73 | 77 | 80 | 79 |
| Wind speed (mph) | 1.5 | 1.7 | 1.6 | 1.6 | 1.6 | 1.7 | 1.9 | 2.2 | 2.2 | 1.9 | 1.6 | 1.5 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Cloud cover (%) | 75 | 77 | 81 | 83 | 75 | 61 |
| Relative humidity (%) | 76 | 73 | 77 | 83 | 85 | 78 |
| Wind speed (mph) | 1.5 | 1.7 | 1.6 | 1.6 | 1.6 | 1.7 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Cloud cover (%) | 57 | 67 | 74 | 81 | 82 | 77 |
| Relative humidity (%) | 72 | 71 | 73 | 77 | 80 | 79 |
| Wind speed (mph) | 1.9 | 2.2 | 2.2 | 1.9 | 1.6 | 1.5 |
Methodology & sources
Temperature & precipitation — modelled for this location from ERA5-Land reanalysis, a ~9 km global grid, because no long-record weather station is close enough to use.
Cloud, humidity, wind & sunshine — modelled estimates from NASA POWER, NASA's satellite-and-reanalysis climatology. This is the standard global source for atmospheric variables, which are not measured at most weather stations.