Climate Insights for Ziway

The climate in Ziway is warm and mild. The average annual temperature is 21°C and approximately 591mm of precipitation falls per year. September is the wettest month, receiving around 131mm of rainfall. Ziway sits near the equator, so seasonal temperature differences are minimal throughout the year.

Ziway sees moderate temperature variation throughout the year, ranging from 17°C to 28°C. The warmest month is March, when average highs reach 28°C and the mean temperature sits around 24°C. December is the coolest month, with minimum temperatures around 17°C and an average of 20°C. Daily temperature variation is modest, with an average difference of 7°C between highs and lows.

Ziway is a relatively dry area, receiving approximately 591mm of precipitation annually, which averages out to around 49mm per month. The wettest month is September, averaging 131mm of rainfall. August and May also tend to see above-average precipitation. The driest month is January, with just 1mm. That's 131mm 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.

Ziway is mildly breezy, with an average annual wind speed of 18km/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 21km/h, noticeable enough to affect lighter outdoor activities. The calmest conditions occur in September, with average winds dropping to 14km/h, making it an ideal period for wind-sensitive activities. There is moderate seasonal variation in wind speed, with a 7km/h gap between the calmest and windiest months. Wind tends to be stronger during winter months, driven by seasonal pressure systems. The seasonal averages break down to 21km/h in winter, 17km/h in spring, 18km/h in summer, 18km/h in autumn.

It is currently spring in Ziway, which began on March 20, 2026. Ziway 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 28°C, while the coldest stretch bottoms out in December near 17°C. Summer is next, beginning on June 21, 2026 — 89 days from now.

The best time to visit Ziway is during January, February, March, April, May, June, July, October, November and December, when the weather is most comfortable for travellers. During these months, average temperatures hover around 22°C with modest rainfall averaging 35mm 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 Ziway 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.