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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 89°F, while the coldest is December averaging around 53°F at night. Precipitation totals about 26 inches a year and is strongly seasonal — August alone averages 9.2 inches while December barely receives 0.11 inches.
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 (°F) | 82 | 86 | 89 | 90 | 89 | 87 | 79 | 77 | 82 | 83 | 82 | 82 |
| Avg temp (°F) | 68 | 71 | 74 | 76 | 77 | 75 | 70 | 69 | 71 | 70 | 69 | 67 |
| Avg low (°F) | 53 | 55 | 59 | 63 | 64 | 64 | 62 | 61 | 60 | 57 | 55 | 53 |
| Precipitation (in) | 0.2 | 0.2 | 0.7 | 1.1 | 1.7 | 2.5 | 6.0 | 9.2 | 3.4 | 0.5 | 0.3 | 0.1 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Avg high (°F) | 82 | 86 | 89 | 90 | 89 | 87 |
| Avg temp (°F) | 68 | 71 | 74 | 76 | 77 | 75 |
| Avg low (°F) | 53 | 55 | 59 | 63 | 64 | 64 |
| Precipitation (in) | 0.2 | 0.2 | 0.7 | 1.1 | 1.7 | 2.5 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Avg high (°F) | 79 | 77 | 82 | 83 | 82 | 82 |
| Avg temp (°F) | 70 | 69 | 71 | 70 | 69 | 67 |
| Avg low (°F) | 62 | 61 | 60 | 57 | 55 | 53 |
| Precipitation (in) | 6.0 | 9.2 | 3.4 | 0.5 | 0.3 | 0.1 |
How often — frequency of weather events
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Days with high ≥ 90°F (days) | — | 3 | 12 | 15 | 16 | 9 | 0.5 | — | 0.3 | 0.1 | — | — |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Days with high ≥ 90°F (days) | — | 3 | 12 | 15 | 16 | 9 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Days with high ≥ 90°F (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.