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Djelfa, Algeria climate
BSk Cold semi-arid
Djelfa has a seasonal mild-temperate climate (Cold semi-arid, Köppen BSk). The hottest month is July with an average daily high near 94°F, while the coldest is January averaging around 33°F at night. Around 11 inches of precipitation falls each year, peaking in September (1.3 inches) and easing off in July (0.5 inches).
Temperature & precipitation
Daily high–low temperature range with the monthly average, plus monthly precipitation · 1991–2020 normals · hover a month for the exact figuresClear vs cloudy days
Share of days each month that are clear, partly cloudy or cloudy · 1991–2020 · hover a month for the day countsDjelfa climate normals (1991–2020)
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high (°F) | 50 | 52 | 60 | 66 | 75 | 86 | 94 | 92 | 81 | 72 | 58 | 51 |
| Avg temp (°F) | 42 | 43 | 50 | 55 | 63 | 73 | 80 | 79 | 70 | 61 | 50 | 43 |
| Avg low (°F) | 33 | 34 | 39 | 43 | 51 | 60 | 66 | 65 | 58 | 51 | 41 | 35 |
| Precipitation (in) | 0.9 | 1.0 | 1.1 | 1.1 | 1.2 | 0.7 | 0.5 | 0.6 | 1.3 | 1.1 | 0.8 | 1.0 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Avg high (°F) | 50 | 52 | 60 | 66 | 75 | 86 |
| Avg temp (°F) | 42 | 43 | 50 | 55 | 63 | 73 |
| Avg low (°F) | 33 | 34 | 39 | 43 | 51 | 60 |
| Precipitation (in) | 0.9 | 1.0 | 1.1 | 1.1 | 1.2 | 0.7 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Avg high (°F) | 94 | 92 | 81 | 72 | 58 | 51 |
| Avg temp (°F) | 80 | 79 | 70 | 61 | 50 | 43 |
| Avg low (°F) | 66 | 65 | 58 | 51 | 41 | 35 |
| Precipitation (in) | 0.5 | 0.6 | 1.3 | 1.1 | 0.8 | 1.0 |
How often — frequency of weather events
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Days with measurable rain (days) | 6 | 5 | 6 | 5 | 5 | 3 | 3 | 3 | 4 | 5 | 5 | 6 |
| Days with high ≥ 90°F (days) | — | — | — | — | 1 | 8 | 20 | 18 | 3 | 0.1 | — | — |
| Days with low ≤ 32°F (days) | 12 | 10 | 4 | 0.8 | — | — | — | — | — | — | 2 | 10 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Days with measurable rain (days) | 6 | 5 | 6 | 5 | 5 | 3 |
| Days with high ≥ 90°F (days) | — | — | — | — | 1 | 8 |
| Days with low ≤ 32°F (days) | 12 | 10 | 4 | 0.8 | — | — |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Days with measurable rain (days) | 3 | 3 | 4 | 5 | 5 | 6 |
| Days with high ≥ 90°F (days) | 20 | 18 | 3 | 0.1 | — | — |
| Days with low ≤ 32°F (days) | — | — | — | — | 2 | 10 |
Sky & atmosphere
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Cloud cover (%) | 44 | 43 | 46 | 46 | 44 | 37 | 34 | 39 | 46 | 43 | 42 | 43 |
| Clear days (≤ 30% cloud) | 12 | 11 | 11 | 11 | 12 | 14 | 15 | 14 | 11 | 13 | 12 | 12 |
| Partly cloudy days (30–70%) | 12 | 11 | 12 | 12 | 12 | 11 | 13 | 13 | 12 | 11 | 11 | 12 |
| Cloudy days (≥ 70%) | 7 | 6 | 8 | 7 | 7 | 5 | 3 | 5 | 7 | 7 | 6 | 6 |
| Relative humidity (%) | 72 | 67 | 60 | 54 | 46 | 37 | 29 | 32 | 46 | 55 | 67 | 75 |
| Wind speed (mph) | 7.7 | 8.0 | 8.4 | 8.5 | 7.9 | 7.3 | 7.0 | 6.4 | 6.7 | 6.6 | 7.5 | 7.5 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Cloud cover (%) | 44 | 43 | 46 | 46 | 44 | 37 |
| Clear days (≤ 30% cloud) | 12 | 11 | 11 | 11 | 12 | 14 |
| Partly cloudy days (30–70%) | 12 | 11 | 12 | 12 | 12 | 11 |
| Cloudy days (≥ 70%) | 7 | 6 | 8 | 7 | 7 | 5 |
| Relative humidity (%) | 72 | 67 | 60 | 54 | 46 | 37 |
| Wind speed (mph) | 7.7 | 8.0 | 8.4 | 8.5 | 7.9 | 7.3 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Cloud cover (%) | 34 | 39 | 46 | 43 | 42 | 43 |
| Clear days (≤ 30% cloud) | 15 | 14 | 11 | 13 | 12 | 12 |
| Partly cloudy days (30–70%) | 13 | 13 | 12 | 11 | 11 | 12 |
| Cloudy days (≥ 70%) | 3 | 5 | 7 | 7 | 6 | 6 |
| Relative humidity (%) | 29 | 32 | 46 | 55 | 67 | 75 |
| Wind speed (mph) | 7.0 | 6.4 | 6.7 | 6.6 | 7.5 | 7.5 |
Methodology & sources
Temperature & precipitation — 1991–2020 normals computed from 23 years of daily observations at Djelfa/tletsi, a weather station, about 2 km from the city centre. 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.