Performing tavaf during rain is entirely permissible and is, in fact, considered a specially blessed time by scholars. There is no scholarly prohibition or dislike associated with tavaf during rainfall. Hz. Peygamber (sallallahu aleyhi ve sellem) identified rainfall as one of the times when dua is more likely to be answered, making tavaf during rain an excellent opportunity to combine two blessed acts — circumambulating the Kabe and supplicating during rainfall.
Sheikh Ibn Baz encouraged hacilar to take advantage of rain during their hac ibadeti, noting that it is a manifestation of Allah's mercy and a time when the gates of heaven are opened. He stated there is no basis for the claim that tavaf should be postponed due to rain. The Permanent Committee similarly confirmed that tavaf during rain is valid and carries no special restrictions.
From a practical standpoint, scholars note that the Mataf (tavaf area) can become slippery during rain, and hacilar — especially the elderly and those with mobility issues — should exercise caution. The Mescid-i Haram administration takes measures to ensure safety during such times. Pilgrims may also perform tavaf on the covered upper floors if they prefer to avoid the rain, and this is equally valid. Using an umbrella during tavaf is also permissible.