The Super 4 stage matches of the Asia Cup, which are scheduled to be played in Colombo from September 9, could be moved to a different venue, with Pallekele and Hambantota the likely alternatives.
Discussions between the Asian Cricket Council and Sri Lanka Cricket (SLC) are ongoing, an SLC official speaking to the Daily Mirror confirmed.
"A decision will be taken tomorrow or the day after," the official, speaking on the condition of anonymity, said adding that Dambulla was not one of the venues being considered.
Torrential rains in Colombo this week have raised concerns that the matches down the crucial stretch of the tournament could be hampered, with Saturday's India-Pakistan clash in Pallekele also being washed out after India completed their innings, batting first.
Thunderstorms have been forecast in Colombo next week, with indications that it may continue until and beyond September 17, the day of the tournament final.