Climate averages 1991–2020

Asmara weather
in January.

A mild, moderately wet month: the 11th warmest and the 9th driest of the year.

Long-term climate patterns, not a forecast for a particular trip.

Average high 20.5°C Daytime mean, January

Average low 9.6°C Night-time mean, January

Rainfall 49 mm 13 days with ≥1 mm

Daylight 11 h Sunrise to sunset, per day

January is a mild month in Asmara: daytime highs average 20.5°C and nights cool to about 9.6°C. By daytime temperature it is the 11th warmest of the 12 months.

Expect about 49 mm of rain on roughly 13 days, which makes January a moderately wet month (the 9th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 11 h 19 min on an average January day.

The nearest other city in this atlas is Keren (71 km away). In January its highs average 26.4°C, 5.9°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 January highs and 2nd of 2 for the driest January (rainfall, lowest first). The mean January high of those 2 cities is 23.5°C; Asmara is 3.0°C cooler than that mean.

From January to February, average highs rise by 1.5°C to 22.0°C, and monthly rainfall falls from 49 mm to 34 mm.

The annual picture

January in context

30-year average

Average highAverage low°C

Monthly rainfall

Average total · mm

Averages 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

1991–2020

Monthly climate averages for Asmara, 1991–2020
Month	Average highHigh / low	Average low	Rainfall mm/month	Rain days ≥1 mm/day	Daylight hours/dayDaylight h/day
January, selected	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	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

January in nearby cities

Distance from Asmara

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 limits

How 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.