Climate Insights for Ziway

The climate in Ziway is warm and mild. The average annual temperature is 20°C and approximately 949mm of precipitation falls per year. September is the wettest month, receiving around 215mm 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 14°C to 27°C. The warmest month is March, when average highs reach 27°C and the mean temperature sits around 23°C. December is the coolest month, with minimum temperatures around 14°C and an average of 19°C. Daily temperature variation is modest, with an average difference of 8°C between highs and lows.

Ziway is a moderately rainy area, receiving approximately 949mm of precipitation annually, which averages out to around 79mm per month. The wettest month is September, averaging 215mm of rainfall. August and May also tend to see above-average precipitation. The driest month is December, with just 4mm. That's 212mm 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 relatively calm, with an average annual wind speed of 3km/h. For context, sustained winds below 12km/h are generally light, while anything above 25km/h is considered strong. The windiest month is December, averaging 4km/h, though still comfortable for most outdoor activities. The calmest conditions occur in September, with average winds dropping to 2km/h, making it an ideal period for wind-sensitive activities. There is moderate seasonal variation in wind speed, with a 2km/h gap between the calmest and windiest months.

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 27°C, while the coldest stretch bottoms out in December near 14°C. Summer is next, beginning on June 21, 2026 — 3 days from now.

The best time to visit Ziway is during January, February, March, June, 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 27mm per month. With minimal rainfall expected, you can pack light and plan outdoor activities with confidence.

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.