Climate averages 1991–2020
Asmara weather
in May.
A warm, moderately wet month: the 2nd warmest and the 7th driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
May is a warm month in Asmara: daytime highs average 24.5°C and nights cool to about 13.7°C. By daytime temperature it is the 2nd warmest of the 12 months.
Expect about 47 mm of rain on roughly 11 days, which makes May a moderately wet month (the 7th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 12 h 50 min on an average May day.
The nearest other city in this atlas is Keren (71 km away). In May its highs average 32.3°C, 7.8°C warmer than Asmara, with 20 mm of rain.
Among the 2 cities listed in Eritrea, Asmara ranks 2nd of 2 for the warmest May highs and 2nd of 2 for the driest May (rainfall, lowest first). The mean May high of those 2 cities is 28.4°C; Asmara is 3.9°C cooler than that mean.
From May to June, average highs rise by 0.8°C to 25.3°C, and monthly rainfall falls from 47 mm to 39 mm.
The annual picture
May in context
Monthly rainfall
Average total · mmAverages from hourly ERA5 reanalysis data. Actual weather varies from year to year. How these numbers are calculated
Every month, side by side
Asmara climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 20.5°C9.6°C | 9.6°C | 49 | 12.9 | 11.311 h |
| February | 22.0°C10.4°C | 10.4°C | 34 | 9.4 | 11.612 h |
| March | 23.3°C11.4°C | 11.4°C | 48 | 12.2 | 12.012 h |
| April | 23.8°C12.6°C | 12.6°C | 63 | 16.1 | 12.512 h |
| May, selected | 24.5°C13.7°C | 13.7°C | 47 | 10.7 | 12.813 h |
| June | 25.3°C14.0°C | 14.0°C | 39 | 8.3 | 13.013 h |
| July | 22.5°C14.0°C | 14.0°C | 182 | 27.3 | 12.913 h |
| August | 22.1°C14.3°C | 14.3°C | 211 | 26.9 | 12.613 h |
| September | 23.4°C13.4°C | 13.4°C | 38 | 6.1 | 12.212 h |
| October | 22.0°C11.9°C | 11.9°C | 28 | 5.7 | 11.812 h |
| November | 20.9°C10.8°C | 10.8°C | 32 | 8.4 | 11.411 h |
| December | 20.3°C10.1°C | 10.1°C | 36 | 10.9 | 11.211 h |
Rainfall is the average of the 30 separate monthly totals. A rain day is a local calendar day with at least 1 mm of precipitation. Daylight is the calculated sunrise-to-sunset length, not measured sunshine.
Compare places
May in nearby cities
- Keren in MayEritrea · 71 kmHigh 32.3°C · Low 18.6°C · 20 mm rain
- Adwa in MayEthiopia · 131 kmHigh 29.6°C · Low 15.5°C · 32 mm rain
- Ādīgrat in MayEthiopia · 131 kmHigh 23.9°C · Low 13.5°C · 68 mm rain
- Aksum in MayEthiopia · 137 kmHigh 28.5°C · Low 15.4°C · 42 mm rain
- Inda Silasē in MayEthiopia · 154 kmHigh 29.9°C · Low 17.7°C · 65 mm rain
- Mek'ele in MayEthiopia · 213 kmHigh 26.9°C · Low 15.5°C · 26 mm rain
- Kassala in MaySudan · 272 kmHigh 40.4°C · Low 26.7°C · 7.0 mm rain
- Alamata in MayEthiopia · 332 kmHigh 30.0°C · Low 17.3°C · 27 mm rain
Read the numbers correctly
Climate, not a promise.
These patterns help compare months. They cannot tell you the weather on a specific day of your trip.
Sources, method and limitsHow these numbers are made (what the highs, lows and rain days mean, the sources and the model cell used for Asmara) is explained once on the Asmara year overview and on the Sources, method and limits page.