Climate Insights for Asmara

The climate in Asmara is warm and mild. The average annual temperature is 20°C and approximately 984mm of precipitation falls per year. August is the wettest month, receiving around 289mm of rainfall. Asmara is in the Northern Hemisphere. Summer begins at the end of June and lasts through September. The summer months are: June, May, September. The coldest months are January, December, February, when temperatures can drop to 12°C.

Asmara sees moderate temperature variation throughout the year, ranging from 12°C to 29°C. The warmest month is June, when average highs reach 29°C and the mean temperature sits around 23°C. January is the coolest month, with minimum temperatures around 12°C and an average of 17°C. On average, daily temperatures fluctuate by about 11°C between overnight lows and afternoon highs.

Asmara is a moderately rainy area, receiving approximately 984mm of precipitation annually, which averages out to around 82mm per month. The wettest month is August, averaging 289mm of rainfall. July and May also tend to see above-average precipitation. The driest month is October, with just 25mm. That's 264mm less than August, the wettest month. Rainfall is heavily concentrated in certain months, creating a distinct wet and dry season. Visitors should plan around these patterns, as the difference between peak and low months is dramatic.

Asmara is relatively calm, with an average annual wind speed of 2km/h. For context, sustained winds below 12km/h are generally light, while anything above 25km/h is considered strong. The windiest month is July, averaging 2km/h, though still comfortable for most outdoor activities. The calmest conditions occur in April, with average winds dropping to 1km/h, making it an ideal period for wind-sensitive activities. There is moderate seasonal variation in wind speed, with a 1km/h gap between the calmest and windiest months.

It is currently summer in Asmara, which began on June 21, 2026. Asmara is in the Northern Hemisphere, where spring begins in March, summer in June, autumn in September, and winter in December. The warmest period peaks in June at around 29°C, while the coldest stretch bottoms out in January near 12°C. Autumn is next, beginning on September 23, 2026 — 93 days from now.

The best time to visit Asmara is during January, February, March, April, May, June, September, October, November and December, when the weather is most comfortable for travellers. During these months, average temperatures hover around 20°C with modest rainfall averaging 50mm per month. A light rain jacket is recommended, though showers are generally brief and shouldn't disrupt your plans.

The table below shows monthly climate averages for Asmara based on historical weather data. Min and max temperatures represent typical overnight lows and afternoon highs for each month, shown in degrees Celsius (°C). Precipitation is measured in millimetres (mm) and indicates the average total rainfall per month. Wind speed is the average sustained speed in kilometres per hour (km/h). All values are based on averages from over 10 years of historical weather data. The current month is highlighted for quick reference.