Table Mountain has its own weather system, and the famous tablecloth of cloud that rolls over the flat summit can shut the cable car down with almost no warning, even on a day that looks clear from the city below. This is the single biggest reason first-time visitors leave Cape Town without ever making it to the top, and it has nothing to do with how far in advance they booked.
The mountain's cloud cover is driven by the southeaster wind, locally called the Cape Doctor, which pushes moist air up the southern slopes where it condenses into the tablecloth as it crosses the summit plateau. It can appear in under an hour on a day that started completely clear, and once it settles in, the cable car typically closes for safety until it clears, which might be later that day or might be the day after.
Because of this, we deliberately do not schedule Table Mountain for a fixed day early in a Cape Town itinerary. We build in flexibility, checking the mountain's live weather and cable car status each morning and moving the activity to whichever day in your stay actually has a clear window, sometimes that means an early morning slot, since the cloud often builds later as the day warms. If your whole Cape Town stay is genuinely overcast the entire time, which does happen for a few days at a stretch, we will tell you honestly rather than send you up to a whited-out viewing deck.
If you only have one day in Cape Town and cannot build in flexibility, aim for the first cable car of the morning, before the afternoon southeaster typically picks up, and have a backup plan for the day: the Bo-Kaap and the V&A Waterfront are both worth a full morning on their own if the mountain is not cooperating.

