Earlier, the Oman series were scheduled for March but they were postponed owing to the Covid-19 pandemic.
The bottom four will compete in the World Cup Qualifiers playoff set to take place in Zimbabwe in June and July of 2023.
The temperature is expected to range between 19 and 27 degrees Celsius.
The date of the Tri-Series is yet to be confirmed officially by the International Cricket Council.
Oman lead the standings winning eight of the 10 matches played.