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Bordj Bou Arreridj, Algeria climate
BSk Cold semi-arid
Bordj Bou Arreridj has a seasonal mild-temperate climate (Cold semi-arid, Köppen BSk). The hottest month is July with an average daily high near 35°C, while the coldest is January averaging around 2°C at night. Precipitation totals about 370 mm a year and is strongly seasonal — April alone averages 42 mm while July barely receives 10 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)Bordj Bou Arreridj climate normals (1991–2020)
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high (°C) | 11 | 12 | 16 | 19 | 25 | 31 | 35 | 34 | 28 | 23 | 16 | 12 |
| Avg temp (°C) | 7 | 7 | 11 | 13 | 18 | 24 | 27 | 27 | 22 | 18 | 11 | 7 |
| Avg low (°C) | 2 | 2 | 5 | 7 | 12 | 16 | 20 | 19 | 15 | 12 | 6 | 3 |
| Precipitation (mm) | 35 | 26 | 37 | 42 | 40 | 18 | 10 | 10 | 41 | 42 | 36 | 33 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Avg high (°C) | 11 | 12 | 16 | 19 | 25 | 31 |
| Avg temp (°C) | 7 | 7 | 11 | 13 | 18 | 24 |
| Avg low (°C) | 2 | 2 | 5 | 7 | 12 | 16 |
| Precipitation (mm) | 35 | 26 | 37 | 42 | 40 | 18 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Avg high (°C) | 35 | 34 | 28 | 23 | 16 | 12 |
| Avg temp (°C) | 27 | 27 | 22 | 18 | 11 | 7 |
| Avg low (°C) | 20 | 19 | 15 | 12 | 6 | 3 |
| Precipitation (mm) | 10 | 10 | 41 | 42 | 36 | 33 |
How often — frequency of weather events
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Days with measurable rain (days) | 8 | 6 | 7 | 7 | 5 | 4 | 2 | 3 | 5 | 6 | 7 | 8 |
| Days with high ≥ 32°C (days) | — | — | — | — | 2 | 11 | 21 | 20 | 5 | 0.4 | — | — |
| Days with low ≤ 0°C (days) | 6 | 5 | 2 | 0.3 | — | — | — | — | — | — | 0.6 | 3 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Days with measurable rain (days) | 8 | 6 | 7 | 7 | 5 | 4 |
| Days with high ≥ 32°C (days) | — | — | — | — | 2 | 11 |
| Days with low ≤ 0°C (days) | 6 | 5 | 2 | 0.3 | — | — |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Days with measurable rain (days) | 2 | 3 | 5 | 6 | 7 | 8 |
| Days with high ≥ 32°C (days) | 21 | 20 | 5 | 0.4 | — | — |
| Days with low ≤ 0°C (days) | — | — | — | — | 0.6 | 3 |
Sky & atmosphere
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Cloud cover (%) | 56 | 55 | 53 | 52 | 48 | 32 | 24 | 27 | 42 | 46 | 53 | 56 |
| Relative humidity (%) | 81 | 77 | 71 | 66 | 61 | 55 | 48 | 49 | 63 | 68 | 77 | 83 |
| Wind speed (mph) | 5.5 | 5.7 | 6.0 | 6.0 | 5.7 | 5.5 | 5.6 | 5.5 | 5.5 | 5.3 | 5.6 | 5.6 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Cloud cover (%) | 56 | 55 | 53 | 52 | 48 | 32 |
| Relative humidity (%) | 81 | 77 | 71 | 66 | 61 | 55 |
| Wind speed (mph) | 5.5 | 5.7 | 6.0 | 6.0 | 5.7 | 5.5 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Cloud cover (%) | 24 | 27 | 42 | 46 | 53 | 56 |
| Relative humidity (%) | 48 | 49 | 63 | 68 | 77 | 83 |
| Wind speed (mph) | 5.6 | 5.5 | 5.5 | 5.3 | 5.6 | 5.6 |
Methodology & sources
Temperature & precipitation — 1991–2020 normals computed from 25 years of daily observations at Bordj-bou-arreridj, a weather station, inside the city. The underlying daily records come from NOAA's global station network.
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.