Pack light, no matter what time of year, Costa Rica is always quite warm. Jaco is a beach town, so flip-flops and shorts are everyday attire. Bring swimsuits, shorts, flip-flops, and anything else you might wear to the beach. Jaco is laid back, and formal wear is usually unnecessary. If you plan on doing any tours, you will want to bring some closed-toed shoes and long pants. Bug spray will also come in handy but can be purchased anywhere. If you plan to visit during rainier months (August—November), a rain jacket or poncho is recommended.