The pronunciation of “agual” in Spanish varies depending on the region, but the most common way is “ah-gwahl”. It is important to note that the “u” is pronounced as in “true”, not as in “glue”.
In some parts of Spain, “agual” is pronounced with a silent “h”, so it sounds like “ah-gwah”. In other parts of Spain, the “a” is pronounced as in “father”, so it sounds like “ah-gwahl”.
