Climate averages 1991–2020
Asmara weather
in December.
A mild, fairly dry month: the coolest and the 4th driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
December is a mild month in Asmara: daytime highs average 20.3°C and nights cool to about 10.1°C. By daytime temperature it is the coolest month of the year.
Expect about 36 mm of rain on roughly 11 days, which makes December a fairly dry month (the 4th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 11 h 14 min on an average December day.
The nearest other city in this atlas is Keren (71 km away). In December its highs average 26.3°C, 6.0°C warmer than Asmara, with almost no rain (under 1 mm).
Among the 2 cities listed in Eritrea, Asmara ranks 2nd of 2 for the warmest December highs and 2nd of 2 for the driest December (rainfall, lowest first). The mean December high of those 2 cities is 23.3°C; Asmara is 3.0°C cooler than that mean.
From December to January, average highs rise by 0.2°C to 20.5°C, and monthly rainfall rises from 36 mm to 49 mm.
The annual picture
December 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 | 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, selected | 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
December in nearby cities
- Keren in DecemberEritrea · 71 kmHigh 26.3°C · Low 14.5°C · 0.6 mm rain
- Adwa in DecemberEthiopia · 131 kmHigh 25.7°C · Low 9.4°C · 2.1 mm rain
- Ādīgrat in DecemberEthiopia · 131 kmHigh 20.6°C · Low 9.1°C · 31 mm rain
- Aksum in DecemberEthiopia · 137 kmHigh 24.6°C · Low 9.4°C · 1.4 mm rain
- Inda Silasē in DecemberEthiopia · 154 kmHigh 26.4°C · Low 12.8°C · 1.1 mm rain
- Mek'ele in DecemberEthiopia · 213 kmHigh 22.4°C · Low 10.4°C · 9.8 mm rain
- Kassala in DecemberSudan · 272 kmHigh 33.7°C · Low 18.9°C · 0.1 mm rain
- Alamata in DecemberEthiopia · 332 kmHigh 24.0°C · Low 12.8°C · 19 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.