Climate Overview
The climate in Arsi Negele is temperate. The average annual temperature is 17°C and approximately 2181mm of precipitation falls per year. September is the wettest month, receiving around 416mm of rainfall. Arsi Negele sits near the equator, so seasonal temperature differences are minimal throughout the year.
Temperature
Arsi Negele sees moderate temperature variation throughout the year, ranging from 9°C to 25°C. March is the warmest month, though highs remain moderate at 25°C with a mean of 18°C. December is the coolest month, with minimum temperatures around 9°C and an average of 16°C. On average, daily temperatures fluctuate by about 10°C between overnight lows and afternoon highs.
Precipitation
Arsi Negele is a very wet location, receiving approximately 2181mm of precipitation annually, which averages out to around 182mm per month. The wettest month is September, averaging 416mm of rainfall. May and October also tend to see above-average precipitation. The driest month is December, with just 13mm. That's 403mm less than September, 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.
Wind
Arsi Negele is relatively calm, with an average annual wind speed of 11km/h. For context, sustained winds below 12km/h are generally light, while anything above 25km/h is considered strong. The windiest month is January, averaging 13km/h, though still comfortable for most outdoor activities. The calmest conditions occur in October, with average winds dropping to 9km/h, making it an ideal period for wind-sensitive activities. There is moderate seasonal variation in wind speed, with a 4km/h gap between the calmest and windiest months.
Seasons
89 days until Summer
It is currently spring in Arsi Negele, which began on March 20, 2026. Arsi Negele 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 25°C, while the coldest stretch bottoms out in December near 9°C. Summer is next, beginning on June 21, 2026 — 89 days from now.
Spring
Temperatures range from 12 to 25°C. Rainfall is heavy, totalling around 676mm across the season with a monthly average of 225mm. Winds are generally light, averaging 10km/h. An umbrella or waterproof jacket is advisable as spring showers are frequent.
Summer
Temperatures range from 13 to 21°C. Rainfall is heavy, totalling around 631mm across the season with a monthly average of 210mm. Winds are generally light, averaging 11km/h. Comfortable clothing with a light layer for cooler evenings is all you need.
Autumn
Temperatures range from 11 to 22°C. Rainfall is heavy, totalling around 816mm across the season with a monthly average of 272mm. Winds are generally light, averaging 10km/h. A waterproof jacket and sturdy footwear are recommended as rain becomes more frequent.
Winter
Temperatures range from 9 to 24°C. Rainfall is relatively light, with around 59mm over the season and a monthly average of 20mm. Winds are generally light, averaging 13km/h. A light jacket or sweater is usually sufficient, though cooler evenings may call for an extra layer.
Best Time to Visit
The best time to visit Arsi Negele is during January, February, March, November and December, when the weather is most comfortable for travellers. During these months, average temperatures hover around 17°C with modest rainfall averaging 51mm per month. A light rain jacket is recommended, though showers are generally brief and shouldn't disrupt your plans.
Monthly Climate Data
The table below shows monthly climate averages for Arsi Negele 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.
