
Depends on factors
Without considering the age factor, the time taken to learn Portuguese depends on three factors such as the attitude of the learner, the time spent by the learner with the language, the involvement in the language, motivation in the learning process, and the attention to the language.
Acquisition
So with a great acquisition and attentiveness to the language, you can learn the Portuguese language easily. But it is a common thing that young people will learn things easier and faster than the elder ones.
Spending time to learn
Research indicates an estimated time that is required to learn Portuguese languages with lots of learners who are over 40. It takes approximately 700 – 800 hours to reach basic fluency for all age groups. If you spend 10 hours a day learning a Portuguese language, then reaching basic fluency takes 100 -110 days. But if you spend only five hours a day then it takes up to four months of time.

Additional activities
Many will do the learning process through some activities and that will be an easier process in the Portuguese learning process. It will take a longer time if you did not learn through these activities. So it is important to focus on these activities that are easy to organize, and that may reading a Portuguese newspaper, making use of Portuguese books, apps, websites, podcasts, etc.
Moreover, for older people through these activities, they might learn the Portuguese language faster than expected, and then it might be easier for them to understand.
Extra works
If the Portuguese learning process is done along with the combination of other works such as at the time when you are doing other jobs, watching TV, when driving your vehicle, exercising when you are doing in your free time, etc. will make you learn the Portuguese language faster even if you are over 40 years old.
Proficiency level
To reach Portuguese professional fluency, it would take quite long if you are over 40 years old. It would also be thrice the time or four times as long based on the factors that are mentioned above.
