Discover the best time of year, based on historical climate, temperature, and precipitation.
The best weather in Arusha is from June, August, September. — consistent weather climate
☀️Pleasant
| Score | 78 | 81 | 65 | 44 | 74 | 89 | 89 | 90 | 92 | 85 | 74 | 73 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Climate | Humid | Humid | Rainy | Rainy | Humid | Mild | Mild | Pleasant | Pleasant | Pleasant | Humid | Humid |
| Temperature | 16–27°C | 16–28°C | 17–27°C | 17–24°C | 15–22°C | 14–21°C | 13–21°C | 14–23°C | 14–25°C | 16–26°C | 16–25°C | 16–26°C |
| Feels like | 16–29°C | 17–29°C | 18–29°C | 18–25°C | 15–23°C | 13–21°C | 12–20°C | 13–22°C | 14–24°C | 16–26°C | 17–26°C | 17–28°C |
| Precipitation | 121mm 12 days | 97mm 11 days | 182mm 16 days | 282mm 30 days | 125mm 20 days | 35mm 9 days | 34mm 9 days | 27mm 8 days | 25mm 6 days | 60mm 11 days | 132mm 17 days | 135mm 17 days |
| Sunshine | 10.3h ☀︎ 84% | 10.7h ☀︎ 87% | 9.6h ☀︎ 80% | 6.9h ☀︎ 57% | 7.7h ☀︎ 64% | 9.0h ☀︎ 76% | 9.4h ☀︎ 79% | 10.0h ☀︎ 83% | 10.5h ☀︎ 87% | 10.7h ☀︎ 88% | 9.7h ☀︎ 79% | 10.1h ☀︎ 82% |
| Wind | E · 11 km/h | E · 13 km/h | E · 13 km/h | E · 13 km/h | E · 15 km/h | E · 15 km/h | E · 16 km/h | E · 17 km/h | E · 18 km/h | E · 18 km/h | E · 15 km/h | E · 12 km/h |
| Humidity (%) | 67% | 65% | 68% | 82% | 80% | 74% | 72% | 69% | 65% | 66% | 73% | 72% |
| Day length | 12.3h | 12.2h | 12.1h | 12.0h | 12.0h | 11.9h | 11.9h | 12.0h | 12.1h | 12.2h | 12.3h | 12.3h |
Arusha endures its heaviest crush of travelers in November and December just as the short rains turn the red dirt roads slick, completely overlooking the pristine, cool, cloudless serenity of June through September.
Arusha is a city perpetually poised on the edge of departure. Hugging the steep, forested flanks of Mount Meru along the eastern terrace of the Great Rift Valley, it exists in the traveler's imagination almost entirely as a staging post. People land here to pack into modified four-wheel-drives bound for the plains of Serengeti National Park, the steep crater walls of Ngorongoro Conservation Area, or the baobab forests of Tarangire National Park. Yet Arusha has a distinct, temperate soul of its own. Because of its elevation, the oppressive tropical heat that defines the coast never settles here. Instead, mornings arrive crisp and smelling of wild sage and damp volcanic soil, while afternoons carry the aroma of roasted coffee and woodsmoke. International tribunals, regional parliaments, and safari outfitters coexist along busy streets where diplomatic saloons share lane space with clattering minibuses and Maasai herders, all beneath the towering, moody presence of the volcano above.
June through September is Arusha at its most immaculate. The atmosphere washes clean, the mountain sheds its thick blanket of cloud, and Mount Meru stands razor-sharp against an indigo sky at daybreak. Mornings are genuinely cold—you will want a wool fleece and hot spiced tea before setting out—while afternoons settle into a gentle, dry warmth that never prompts a sweat.
Out in the wilderness, the landscape works entirely in your favor. In Arusha National Park and down through the river valleys of Tarangire National Park, vegetation thins out and the underbrush withers. Wildlife cannot hide behind lush greenery, and animals cluster predictably around dwindling watercourses. Dust replaces mud on the tracks, ensuring your safari vehicle spends its days moving rather than winching itself out of ruts.
Curiously, the town itself remains remarkably breathable during these months. Even with a steady stream of adventurers departing toward Mount Kilimanjaro or the northern game reserves, the streets never feel choked. September stands out as the finest month on the calendar: sunny, bone-dry, and blessed with an effortless daytime rhythm where outdoor lunches linger well into the afternoon without a drop of rain in sight.
October acts as the bridge between the dry chill of winter and the return of equatorial moisture. The days warm noticeably, dust kicks up in pale red plumes from unpaved alleys, and purple jacaranda blossoms begin to carpet the residential avenues. It is one of the quietest months in town, making it an idyllic moment for travelers who prefer unhurried markets and open lodge verandas.
Out on the savanna, the tension before the rains is palpable. The grasslands skirting Lake Manyara National Park and the cracked earth around Olduvai Gorge bake beneath high sun. Wildlife viewing remains exceptional because water is at its absolute scarcest, forcing predators and prey into dramatic proximity around the last remaining pools. You will feel the heat building through midday, but the nights stay pleasantly cool.
November is the single busiest month in Arusha, followed closely by a packed holiday rush in December. This surge defies meteorological logic. Just as global travelers descend in peak numbers, the short rains—known locally as the Vuli—arrive to dismantle carefully planned timetables. The skies turn heavy and dark by early afternoon, releasing intense, soaking downpours that churn unpaved tracks into thick, impassable red slurry.
Navigating town during these two months requires patience. Traffic snarls around roundabouts, safari trucks queue endlessly at mechanics, and the steep slopes beneath Mount Meru frequently disappear behind sodden gray mist. Out in the bush, sudden storms can turn dry riverbeds into impassable torrents within an hour.
There is beauty here if you are prepared for the mess: the landscape transforms overnight from parched yellow to an electric, glowing green, and migratory birds arrive in their thousands across the Great Rift Valley. But if you come expecting easy travel, smooth roads, and clear mountain vistas, you will spend much of your trip wiping condensation from your Land Cruiser window.
After the short rains taper off, January and February settle into a warm, sunlit interlude. The air feels distinctly hotter than in the mid-year dry months, with daytime temperatures routinely pushing toward 28 degrees, yet humidity remains modest enough that walking the city remains pleasant.
This is a favored window for seasoned bush travelers. The newborn wildebeest drop across the southern plains of Serengeti National Park, sparking explosive predator action that ripples through the entire ecosystem. Arusha hums with purposeful energy, serving as a sunny, dust-filmed base camp where adventurers swap field stories over cold lagers under open-sided thatch roofs before heading back into the wild.
By late March, the true wet season—the Masika—takes hold, reaching its soggy, unrelenting zenith in April. This is not a matter of picturesque afternoon showers; it is a sustained deluge that saturates the earth and drenches the volcanic foothills for weeks on end. April is the most difficult month of the year to be in Arusha, marked by gray horizons, damp clothes that refuse to dry, and sun that rarely breaks through the cloud base for more than an hour or two.
Many rural lodges shutter entirely, and for good reason. Black cotton soil across the northern safari circuit becomes a bottomless mire, capable of swallowing heavy four-wheel-drives to the axle. In Arusha National Park, trails turn into rushing streams, and the summits of Mount Meru and Mount Kilimanjaro are locked behind dense cloud.
By late May, the downpours begin to splinter into lighter showers and the sun reemerges over a vibrant, thoroughly replenished valley. If you visit during the deluge, you will have the national parks almost entirely to yourself at a fraction of the usual friction, but you must accept that the rain will dictate every single hour of your journey.