Climate Insights for Jimma

The climate in Jimma is warm and mild. The average annual temperature is 19°C and approximately 1271mm of precipitation falls per year. May is the wettest month, receiving around 236mm of rainfall. Jimma sits near the equator, so seasonal temperature differences are minimal throughout the year.

Jimma sees moderate temperature variation throughout the year, ranging from 11°C to 29°C. The warmest month is March, when average highs reach 29°C and the mean temperature sits around 23°C. December is the coolest month, with minimum temperatures around 11°C and an average of 19°C. On average, daily temperatures fluctuate by about 12°C between overnight lows and afternoon highs.

Jimma is a fairly wet location, receiving approximately 1271mm of precipitation annually, which averages out to around 106mm per month. The wettest month is May, averaging 236mm of rainfall. July and April also tend to see above-average precipitation. The driest month is December, with just 1mm. That's 235mm less than May, 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.

Jimma is relatively calm, with an average annual wind speed of 1km/h. For context, sustained winds below 12km/h are generally light, while anything above 25km/h is considered strong. The windiest month is March, averaging 1km/h, though still comfortable for most outdoor activities. The calmest conditions occur in September, 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 0km/h gap between the calmest and windiest months.

It is currently summer in Jimma, which began on June 21, 2026. Jimma sits near the equator, so the traditional four-season cycle is less pronounced — temperatures remain relatively stable year-round. The warmest period peaks in March at around 29°C, while the coldest stretch bottoms out in December near 11°C. Autumn is next, beginning on September 23, 2026 — 52 days from now.

The best time to visit Jimma is during January, February, March, 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 24mm per month. With minimal rainfall expected, you can pack light and plan outdoor activities with confidence.

The table below shows monthly climate averages for Jimma 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.