Climate Insights for Arusha

The climate in Arusha is warm and mild. The average annual temperature is 22°C and approximately 707mm of precipitation falls per year. April is the wettest month, receiving around 170mm of rainfall. Arusha sits near the equator, so seasonal temperature differences are minimal throughout the year.

Arusha sees moderate temperature variation throughout the year, ranging from 14°C to 30°C. The warmest month is February, when average highs reach 30°C and the mean temperature sits around 24°C. July is the coolest month, with minimum temperatures around 14°C and an average of 18°C. On average, daily temperatures fluctuate by about 10°C between overnight lows and afternoon highs.

Arusha is a relatively dry area, receiving approximately 707mm of precipitation annually, which averages out to around 59mm per month. The wettest month is April, averaging 170mm of rainfall. March and May also tend to see above-average precipitation. The driest month is September, with just 9mm. That's 161mm less than April, 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.

Arusha is mildly breezy, with an average annual wind speed of 13km/h. For context, sustained winds below 12km/h are generally light, while anything above 25km/h is considered strong. The windiest month is October, averaging 16km/h, though still comfortable for most outdoor activities. The calmest conditions occur in January, with average winds dropping to 11km/h, making it an ideal period for wind-sensitive activities. There is moderate seasonal variation in wind speed, with a 5km/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 13km/h in winter, 15km/h in spring, 11km/h in summer, 12km/h in autumn.

It is currently autumn in Arusha, which began on March 20, 2026. Arusha sits near the equator, so the traditional four-season cycle is less pronounced — temperatures remain relatively stable year-round. The warmest period peaks in February at around 30°C, while the coldest stretch bottoms out in July near 14°C. Winter is next, beginning on June 21, 2026 — 90 days from now.

The best time to visit Arusha is during January, February, May, June, July, August, September, October, November and December, when the weather is most comfortable for travellers. During these months, average temperatures hover around 21°C with modest rainfall averaging 43mm 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 Arusha 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.