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Arta, Djibouti climate
BWh Hot desert
Arta has a mildly seasonal tropical climate (Hot desert, Köppen BWh). The hottest month is June with an average daily high near 39°C, while the coldest is January averaging around 22°C at night. Precipitation totals about 269 mm a year and is strongly seasonal — April alone averages 40 mm while June barely receives 2 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)Arta climate normals (1991–2020)
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high (°C) | 28 | 29 | 30 | 32 | 35 | 39 | 38 | 38 | 37 | 33 | 30 | 28 |
| Avg temp (°C) | 25 | 25 | 27 | 29 | 31 | 35 | 34 | 34 | 33 | 29 | 27 | 25 |
| Avg low (°C) | 22 | 22 | 24 | 25 | 28 | 30 | 30 | 30 | 29 | 26 | 24 | 22 |
| Precipitation (mm) | 33 | 23 | 30 | 40 | 18 | 2 | 10 | 20 | 12 | 24 | 30 | 26 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Avg high (°C) | 28 | 29 | 30 | 32 | 35 | 39 |
| Avg temp (°C) | 25 | 25 | 27 | 29 | 31 | 35 |
| Avg low (°C) | 22 | 22 | 24 | 25 | 28 | 30 |
| Precipitation (mm) | 33 | 23 | 30 | 40 | 18 | 2 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Avg high (°C) | 38 | 38 | 37 | 33 | 30 | 28 |
| Avg temp (°C) | 34 | 34 | 33 | 29 | 27 | 25 |
| Avg low (°C) | 30 | 30 | 29 | 26 | 24 | 22 |
| Precipitation (mm) | 10 | 20 | 12 | 24 | 30 | 26 |
How often — frequency of weather events
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Days with high ≥ 32°C (days) | 0.0 | 0.2 | 2 | 13 | 27 | 30 | 31 | 31 | 29 | 18 | 1 | — |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Days with high ≥ 32°C (days) | 0.0 | 0.2 | 2 | 13 | 27 | 30 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Days with high ≥ 32°C (days) | 31 | 31 | 29 | 18 | 1 | — |
Sky & atmosphere
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Cloud cover (%) | 33 | 32 | 34 | 35 | 35 | 42 | 49 | 47 | 46 | 30 | 25 | 26 |
| Relative humidity (%) | 74 | 74 | 74 | 73 | 63 | 45 | 45 | 47 | 53 | 65 | 71 | 73 |
| Wind speed (mph) | 10.2 | 9.9 | 9.1 | 7.8 | 5.8 | 7.9 | 10.5 | 9.8 | 6.6 | 7.5 | 9.0 | 9.6 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Cloud cover (%) | 33 | 32 | 34 | 35 | 35 | 42 |
| Relative humidity (%) | 74 | 74 | 74 | 73 | 63 | 45 |
| Wind speed (mph) | 10.2 | 9.9 | 9.1 | 7.8 | 5.8 | 7.9 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Cloud cover (%) | 49 | 47 | 46 | 30 | 25 | 26 |
| Relative humidity (%) | 45 | 47 | 53 | 65 | 71 | 73 |
| Wind speed (mph) | 10.5 | 9.8 | 6.6 | 7.5 | 9.0 | 9.6 |
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.