When to Visit Botswana? Seasons, Safari and the Okavango Paradox

Forget spring and autumn here: the calendar comes down to a dry season, matching the austral winter and running roughly from May to October, and a rainy season, or green season, from November to April. These two periods do far more than change the weather; they radically transform the safari experience, the state of the tracks and the price of lodges.

The dry season gives you a scorched, yellow landscape where water becomes scarce and precious. The green season, by contrast, makes the vegetation explode, fills the pans and draws in migratory birds. Knowing what you are after above all, big herds or lush scenery and low prices, already points you toward the right dates.

This is the prime time to watch wildlife. As water grows scarce, animals concentrate around waterholes and permanent rivers: they are easier to find, often in large numbers. The low vegetation opens up visibility, mosquitoes are less of a nuisance and the dry tracks generally stay drivable in a 4x4.

The downside is the crowds: July to October is peak season, with camps booked out well in advance and prices at their highest. Days warm up noticeably toward the end of the season, with September and October turning very hot and dusty, even if mornings stay cool in the depth of winter.

The rainy season transforms the country: tall grasses, dramatic skies, a wave of births among the grazers and the return of migratory birds. Predators feast on the young prey, the light is superb for photography and prices drop considerably. It is a magnificent season for anyone who values atmosphere and scenery.

You have to accept its constraints: often heavy heat, thunderstorms, roads and tracks sometimes impassable after downpours, and some camps closed for part of the period. With water everywhere, wildlife disperses and becomes harder to spot. You trade viewing comfort for beauty and quiet.

This is Botswana's most baffling feature. The Okavango Delta reaches its highest water level around June to August, in the middle of the local dry season, when almost no rain is falling on the ground. The key lies hundreds of kilometres away, on the highlands of Angola.

The work of T. S. McCarthy and colleagues on the hydrology and geohydrology of the Okavango Delta ("Observations on the hydrology and geohydrology of the Okavango Delta", available via Google Scholar: scholar.google.com/scholar?q=McCarthy+hydrology+Okavango+Delta+flooding+patterns) describes this flood "pulse": rain falls on the Angolan highlands during the austral summer (November-April), but the wave takes several months to travel down and spread through the delta. As a result, the flood peaks far later, in the heart of Botswana's dry season.

The table below sums up what each period offers depending on what you are coming for. Keep in mind these boundaries are indicative: a dry year or a big flood can shift things by a few weeks.

For a first trip focused on big game and mokoro trips through water-filled channels, the June-August window ticks the most boxes. For a tight budget or a passion for birds and green landscapes, aim for the green season instead.

Each major region has its own rhythm. Along the Chobe River, the dry season delivers spectacular elephant concentrations, among the highest in Africa, gathering to drink at the water's edge. In the Okavango Delta, the mokoro and the water-filled channels are best enjoyed when the flood is high, around June to August.

The Central Kalahari, on the other hand, comes into its own during the green season: after the rains the grasses turn green, predators follow the herds and oryx bring the south of the reserve to life. Combining these regions therefore means accepting a compromise, or choosing your itinerary to match your travel season.

If your priority is a classic safari, with the most visible wildlife and a water-filled delta, go between May and October, ideally June to August to pair concentrated game with a high flood. It is the safest choice for a first trip, provided you book early and accept high prices.

If you are after green landscapes, births, birds and gentler prices, the green season from November to April will delight you, especially in early and late season to limit the rain. The right time really depends on what you want to bring home from this journey.