Climate
The Delta's profuse greenery is not the result of a tropical climate, rather it is an oasis in an arid country. The average annual rainfall is 450mm (approximately one third that of its Angolan catchment area) and most of it falls between December and March in the form of heavy afternoon thunderstorms.
December to February are hot wet months with daytime temperatures as high as 40°C, warm nights, and humidity levels fluctuating between 50 and 80%. From March to May the temperature becomes far more comfortable with a maximum of 30°C during the day and mild to cool nights. The rains quickly dry up leading into the dry, cold winter months of June to August. Daytime temperatures at this time of year are mild to warm but the temperature begins to fall after sunset. Nights can be surprisingly cold in the Delta with temperatures barely above freezing.
September to November sees the heat and atmospheric pressure build up once more as the dry season slides into the rainy season. October is the most challenging month for visitors - daytime temperatures often push past 40°C and the dryness is only occasionally broken by a sudden cloudburst.
Read more about this topic: Okavango Delta
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