Miraflores sits on a low bluff above the Pacific, about seventy meters of crumbling sedimentary cliff dropping to the Costa Verde highway. The malecones — the linked clifftop parks of Cisneros, de la Reserva, de la Marina, and 28 de Julio — run almost continuously for five kilometers along that edge, planted with mixed olive, ficus, jacaranda, molle, and a thick understorey of bougainvillea. The shade is moderate, in the seventies to low eighties. The advantage is the breeze. The Humboldt current pushes a cold mass of air onshore in the afternoon; the malecones sit directly in its path, and the felt temperature on the bluff is reliably four or five degrees below the felt temperature five blocks inland.
The picks below trace the malecones. The premise is late afternoon — the Lima summer is overcast in the morning (the garúa, the marine layer) and clear later, and the breeze sits hardest from about 4 PM to sunset. Walk south to north if you want the sun behind you and the breeze cross-cutting from your left; walk north to south if you want the sun in your eyes but the breeze fully behind. The picks below assume south-to-north. A practical note: the parapraente — the paragliders that launch from Parque Raimondi — fly directly overhead. Look up.