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Isale, Burundi climate
Af Tropical rainforest
Isale has a remarkably steady warm-temperate climate (Tropical rainforest, Köppen Af). The hottest month is September with an average daily high near 28°C, while the coldest is July averaging around 15°C at night. Precipitation totals about 5123 mm a year and is strongly seasonal — November alone averages 709 mm while July barely receives 63 mm.
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)Isale climate normals (1991–2020)
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high (°C) | 26 | 26 | 26 | 26 | 25 | 25 | 26 | 27 | 28 | 27 | 26 | 26 |
| Avg temp (°C) | 22 | 22 | 22 | 22 | 21 | 21 | 20 | 22 | 23 | 23 | 22 | 22 |
| Avg low (°C) | 18 | 18 | 18 | 18 | 17 | 16 | 15 | 17 | 18 | 18 | 18 | 18 |
| Precipitation (mm) | 512 | 470 | 594 | 613 | 372 | 123 | 63 | 136 | 280 | 609 | 709 | 643 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Avg high (°C) | 26 | 26 | 26 | 26 | 25 | 25 |
| Avg temp (°C) | 22 | 22 | 22 | 22 | 21 | 21 |
| Avg low (°C) | 18 | 18 | 18 | 18 | 17 | 16 |
| Precipitation (mm) | 512 | 470 | 594 | 613 | 372 | 123 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Avg high (°C) | 26 | 27 | 28 | 27 | 26 | 26 |
| Avg temp (°C) | 20 | 22 | 23 | 23 | 22 | 22 |
| Avg low (°C) | 15 | 17 | 18 | 18 | 18 | 18 |
| Precipitation (mm) | 63 | 136 | 280 | 609 | 709 | 643 |
How often — frequency of weather events
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Days with high ≥ 32°C (days) | — | 0.1 | — | — | — | — | — | — | — | — | — | — |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Days with high ≥ 32°C (days) | — | 0.1 | — | — | — | — |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Days with high ≥ 32°C (days) | — | — | — | — | — | — |
Sky & atmosphere
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Cloud cover (%) | 80 | 79 | 80 | 82 | 71 | 54 | 44 | 53 | 66 | 79 | 83 | 81 |
| Relative humidity (%) | 75 | 74 | 76 | 78 | 75 | 69 | 63 | 59 | 59 | 66 | 74 | 76 |
| Wind speed (km/h) | 2.9 | 3.1 | 3.2 | 3.5 | 3.8 | 4.1 | 4.4 | 4.8 | 4.7 | 4.2 | 3.5 | 3.0 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Cloud cover (%) | 80 | 79 | 80 | 82 | 71 | 54 |
| Relative humidity (%) | 75 | 74 | 76 | 78 | 75 | 69 |
| Wind speed (km/h) | 2.9 | 3.1 | 3.2 | 3.5 | 3.8 | 4.1 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Cloud cover (%) | 44 | 53 | 66 | 79 | 83 | 81 |
| Relative humidity (%) | 63 | 59 | 59 | 66 | 74 | 76 |
| Wind speed (km/h) | 4.4 | 4.8 | 4.7 | 4.2 | 3.5 | 3.0 |
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.