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Mendefera, Eritrea climate
BSh Hot semi-arid
Mendefera has a remarkably steady warm-temperate climate (Hot semi-arid, Köppen BSh). The hottest month is May with an average daily high near 32°C, while the coldest is December averaging around 12°C at night. Precipitation totals about 657 mm a year and is strongly seasonal — August alone averages 232 mm while December barely receives 3 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)Mendefera climate normals (1991–2020)
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high (°C) | 28 | 30 | 32 | 32 | 32 | 31 | 26 | 25 | 28 | 28 | 28 | 28 |
| Avg temp (°C) | 20 | 22 | 23 | 24 | 25 | 24 | 21 | 21 | 22 | 21 | 20 | 20 |
| Avg low (°C) | 12 | 13 | 15 | 17 | 18 | 18 | 16 | 16 | 16 | 14 | 13 | 12 |
| Precipitation (mm) | 5 | 4 | 17 | 29 | 43 | 64 | 153 | 232 | 87 | 13 | 9 | 3 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Avg high (°C) | 28 | 30 | 32 | 32 | 32 | 31 |
| Avg temp (°C) | 20 | 22 | 23 | 24 | 25 | 24 |
| Avg low (°C) | 12 | 13 | 15 | 17 | 18 | 18 |
| Precipitation (mm) | 5 | 4 | 17 | 29 | 43 | 64 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Avg high (°C) | 26 | 25 | 28 | 28 | 28 | 28 |
| Avg temp (°C) | 21 | 21 | 22 | 21 | 20 | 20 |
| Avg low (°C) | 16 | 16 | 16 | 14 | 13 | 12 |
| Precipitation (mm) | 153 | 232 | 87 | 13 | 9 | 3 |
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 | 12 | 15 | 16 | 9 | 0.5 | — | 0.3 | 0.1 | — | — |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Days with high ≥ 32°C (days) | — | 3 | 12 | 15 | 16 | 9 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Days with high ≥ 32°C (days) | 0.5 | — | 0.3 | 0.1 | — | — |
Sky & atmosphere
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Cloud cover (%) | 16 | 19 | 28 | 41 | 49 | 60 | 75 | 76 | 55 | 35 | 20 | 15 |
| Relative humidity (%) | 55 | 49 | 46 | 45 | 44 | 53 | 75 | 80 | 64 | 56 | 54 | 54 |
| Wind speed (mph) | 5.7 | 6.1 | 6.0 | 6.2 | 5.5 | 6.1 | 6.7 | 5.2 | 4.3 | 5.5 | 5.6 | 5.7 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Cloud cover (%) | 16 | 19 | 28 | 41 | 49 | 60 |
| Relative humidity (%) | 55 | 49 | 46 | 45 | 44 | 53 |
| Wind speed (mph) | 5.7 | 6.1 | 6.0 | 6.2 | 5.5 | 6.1 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Cloud cover (%) | 75 | 76 | 55 | 35 | 20 | 15 |
| Relative humidity (%) | 75 | 80 | 64 | 56 | 54 | 54 |
| Wind speed (mph) | 6.7 | 5.2 | 4.3 | 5.5 | 5.6 | 5.7 |
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.