Amman is a city with genuinely distinct, sharply contrasting seasons, which means your packing list should be built around your specific travel season, not around a general idea of a "hot Middle East" that might mislead you if you're coming from a Gulf climate that stays relatively mild even in winter.

If your trip falls in spring (March–May) or autumn (September–November), you're in the easiest position to pack for: light, adjustable layers are the ideal solution — a long-sleeved shirt or light jacket for mornings and evenings, removable during the warmer midday hours. Bring comfortable, closed walking shoes, since downtown and the Amman Citadel both involve substantial walking over stone surfaces and uneven old stairways.

In summer (June–September), prioritize light, breathable fabrics, a hat, and high-SPF sunscreen, as the dry heat can top 35°C at midday. But don't skip packing a light extra layer for evenings — the nighttime temperature drop is noticeable in a hilltop city like Amman compared to low-lying coastal cities, especially if you're planning an outdoor evening on Rainbow Street or Abdali Boulevard.

Winter (December–February) is the season that deserves the most serious preparation. Amman is a hilltop city where nighttime temperatures can approach freezing, and January specifically is the rainiest month, averaging about 63mm spread across roughly 11 rainy days, with rare cases of light snowfall. A real winter coat (not just a light jacket), waterproof shoes with good grip, and a small umbrella are all non-negotiable essentials if your trip falls in winter.

Regardless of season, there are fixed items that should always be in your bag: modest clothing covering at least the shoulders and knees for mosque visits (especially King Abdullah I Mosque), though the mosque provides free abayas for those who need one on arrival. Also carry a sufficient amount of Jordanian Dinars in cash, since some small shops in traditional markets don't always accept cards. Don't forget a power adapter if your devices don't match Jordan's standard outlets (Type G/C depending on source — check before you travel). Finally, if your trip includes a full day in Petra as part of the same journey, bring walking shoes that are actually broken in, not brand new, to avoid any friction or blisters on a day that demands extensive walking over uneven ground.