At this time, Cheapflights has noticed price decreases for many domestic flights due to COVID-19. Travel is not necessarily recommended at this time, and flights may be prone to cancellation: please check with local authorities in both Birmingham and Iguazu for travel alerts, and be sure to review the airline's cancellation policy and travel advisories before booking. For more information, please view our post on what to know about COVID-19 (coronavirus) and travel.
When travelling, it's generally smart to pack in preparation for rain or any other conditions that may arise. The rainfall in Birmingham is roughly less than Iguazu. You can assume this to be the case over the next 12 days.
Expect the weather to be around 33 °C on average in January. As the temperature peaks, try to get your plans done early, as flight price and availability will have an impact on your travels. The climate in Iguazu is generally hotter than in Birmingham.