Benchmarked strictly across TripTiming's 5 empirical pillars: Crowds, Weather, Vibes, Prices, and Safety.
Zanzibar emerges as the optimal March destination with an overall TripTiming Index of 75/100 vs 68/100 for Cape Town (+7 point advantage). Zanzibar experiences more manageable visitor density and shorter landmark queues (carrying capacity score 74/100 vs 55/100 in Cape Town). Urban navigability is also slightly smoother and more predictable. Travelers also benefit from lower accommodation costs (~$110/night vs ~$180/night in Cape Town, saving ~$490 over a week). While Cape Town retains an edge in Weather Comfort (99/100 vs 88/100), Zanzibar's commanding performance in Space & Crowds secures the overall March recommendation.