Antigua has a tropical highland climate, with relatively mild temperatures year-round due to its elevation (~5,000 ft / 1,500 m) and distinct wet and dry seasons.
Warmest months: March–April (highs around 80°F)
Coolest months: December–January (lows around 50°F)
Wettest months: June–September
Best travel months: December–April (dry, clear weather)
Breathable t-shirts or blouses
Long-sleeve shirt or light sweater (for mornings/evenings)
Jeans or travel pants
Lightweight shorts or skirt
Light jacket or hoodie (it gets chilly at night)
Comfortable walking shoes (sneakers or good sandals)
Hat
Sunglasses
Sunscreen (high UV even with cooler temps)
Travel-size toiletries
Reusable water bottle
Light daypack for walking or hiking
Power adapter (standard US plugs if you're not from North America)