Climate averages 1991–2020
Keren weather
in September.
A warm, wet month: the 7th warmest and the 11th driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
September is a warm month in Keren: daytime highs average 27.9°C and nights cool to about 17.4°C. By daytime temperature it is the 7th warmest of the 12 months.
Expect about 123 mm of rain on roughly 17 days, which makes September a wet month (the 11th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 12 h 14 min on an average September day.
The nearest other city in this atlas is Asmara (71 km away). In September its highs average 23.4°C, 4.5°C cooler than Keren, with 38 mm of rain.
Among the 2 cities listed in Eritrea, Keren ranks 1st of 2 for the warmest September highs and 2nd of 2 for the driest September (rainfall, lowest first). The mean September high of those 2 cities is 25.7°C; Keren is 2.3°C warmer than that mean.
From September to October, average highs rise by 0.8°C to 28.7°C, and monthly rainfall falls from 123 mm to 6.2 mm.
The annual picture
September 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
Keren climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 26.4°C14.0°C | 14.0°C | 0.5 | 0.1 | 11.311 h |
| February | 28.1°C14.4°C | 14.4°C | 0.6 | 0.1 | 11.612 h |
| March | 29.9°C15.6°C | 15.6°C | 5.3 | 1.8 | 12.012 h |
| April | 31.3°C17.3°C | 17.3°C | 13 | 4.9 | 12.512 h |
| May | 32.3°C18.6°C | 18.6°C | 20 | 5.6 | 12.913 h |
| June | 30.7°C19.7°C | 19.7°C | 42 | 11.0 | 13.013 h |
| July | 26.4°C18.1°C | 18.1°C | 86 | 20.1 | 13.013 h |
| August | 25.1°C17.9°C | 17.9°C | 193 | 28.3 | 12.713 h |
| September, selected | 27.9°C17.4°C | 17.4°C | 123 | 16.8 | 12.212 h |
| October | 28.7°C14.9°C | 14.9°C | 6.2 | 1.6 | 11.812 h |
| November | 27.4°C14.9°C | 14.9°C | 3.1 | 0.9 | 11.411 h |
| December | 26.3°C14.5°C | 14.5°C | 0.6 | 0.1 | 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
September in nearby cities
- Asmara in SeptemberEritrea · 71 kmHigh 23.4°C · Low 13.4°C · 38 mm rain
- Adwa in SeptemberEthiopia · 186 kmHigh 25.2°C · Low 12.9°C · 75 mm rain
- Aksum in SeptemberEthiopia · 187 kmHigh 23.9°C · Low 12.8°C · 87 mm rain
- Inda Silasē in SeptemberEthiopia · 187 kmHigh 24.6°C · Low 14.6°C · 253 mm rain
- Ādīgrat in SeptemberEthiopia · 199 kmHigh 22.6°C · Low 12.8°C · 61 mm rain
- Kassala in SeptemberSudan · 223 kmHigh 36.2°C · Low 24.6°C · 24 mm rain
- Mek'ele in SeptemberEthiopia · 277 kmHigh 24.2°C · Low 13.9°C · 67 mm rain
- Al Qadarif in SeptemberSudan · 382 kmHigh 32.9°C · Low 23.0°C · 64 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 Keren) is explained once on the Keren year overview and on the Sources, method and limits page.