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Assab, Eritrea climate
BWh Hot desert
Assab 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 21°C at night. Precipitation totals about 74 mm a year and is strongly seasonal — August alone averages 20 mm while June barely receives 1 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)Assab climate normals (1991–2020)
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high (°C) | 31 | 32 | 34 | 35 | 37 | 39 | 37 | 36 | 37 | 35 | 33 | 31 |
| Avg temp (°C) | 26 | 27 | 28 | 30 | 32 | 34 | 33 | 32 | 33 | 30 | 28 | 27 |
| Avg low (°C) | 21 | 22 | 23 | 25 | 28 | 29 | 29 | 28 | 29 | 26 | 23 | 22 |
| Precipitation (mm) | 10 | 6 | 4 | 4 | 2 | 1 | 11 | 20 | 6 | 4 | 1 | 6 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Avg high (°C) | 31 | 32 | 34 | 35 | 37 | 39 |
| Avg temp (°C) | 26 | 27 | 28 | 30 | 32 | 34 |
| Avg low (°C) | 21 | 22 | 23 | 25 | 28 | 29 |
| Precipitation (mm) | 10 | 6 | 4 | 4 | 2 | 1 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Avg high (°C) | 37 | 36 | 37 | 35 | 33 | 31 |
| Avg temp (°C) | 33 | 32 | 33 | 30 | 28 | 27 |
| Avg low (°C) | 29 | 28 | 29 | 26 | 23 | 22 |
| Precipitation (mm) | 11 | 20 | 6 | 4 | 1 | 6 |
How often — frequency of weather events
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Days with high ≥ 32°C (days) | 3 | 11 | 25 | 29 | 31 | 30 | 30 | 29 | 29 | 28 | 22 | 6 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Days with high ≥ 32°C (days) | 3 | 11 | 25 | 29 | 31 | 30 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Days with high ≥ 32°C (days) | 30 | 29 | 29 | 28 | 22 | 6 |
Sky & atmosphere
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Cloud cover (%) | 24 | 27 | 33 | 33 | 37 | 50 | 63 | 62 | 51 | 28 | 16 | 14 |
| Relative humidity (%) | 67 | 65 | 62 | 58 | 53 | 47 | 54 | 60 | 57 | 57 | 62 | 66 |
| Wind speed (m/s) | 6.3 | 6.3 | 6.0 | 5.6 | 3.9 | 3.5 | 3.8 | 3.4 | 3.0 | 4.7 | 6.0 | 6.1 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Cloud cover (%) | 24 | 27 | 33 | 33 | 37 | 50 |
| Relative humidity (%) | 67 | 65 | 62 | 58 | 53 | 47 |
| Wind speed (m/s) | 6.3 | 6.3 | 6.0 | 5.6 | 3.9 | 3.5 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Cloud cover (%) | 63 | 62 | 51 | 28 | 16 | 14 |
| Relative humidity (%) | 54 | 60 | 57 | 57 | 62 | 66 |
| Wind speed (m/s) | 3.8 | 3.4 | 3.0 | 4.7 | 6.0 | 6.1 |
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.