Having scored 83-1 from 16 overs, Australia only needed to play for four more overs to be eligible to win via the Duckworth-Lewis rule for rain-affected games.
"But to be fair, it was raining reasonably hard when we did come off, yeah".
Kane Williamson, the New Zealand captain, lived up to his billing as one of the world´s best batsmen with a superb hundred in their Group A opener against Australia at Edgbaston on Friday.
Australia captain Steve Smith: "It's a little bit frustrating not to get a result in".
Australia has one point from their opening match against New Zealand which had to be abandoned following too many holdups due to rain.
Heavy rain in Cardiff on Monday left New Zealand contemplating the prospect of another washout but Guptill said: "We can't control the weather".
His fourth fifty in last five innings was the Oppo Moment of the match.
Bangladesh elected to bat and their supporters, whose superior numbers formed a sea of green in the stands, burst into life when Tamim flicked one off his pads for the game's first boundary.
The main threat to Australia's ambitions could come from the weather, with rain forecast for the latter part of the day. If the game had just carried on, perhaps they may have had a different opinion.
After dismissing the opener, Starc cleaned up Mashrafe Mortaza two balls later and then did the same to Rubel Hossain next delivery.
Earlier, a sensational death bowling spell by Mitchell Starc (4/29) trumped Tamim Iqbal's superb 95 as Australia bowled Bangladesh out for a paltry 182 in 44.3 overs.
After hitting 128 against England in Bangladesh's opening match on Thursday, Tamim was the main man once again, but this time he lacked support and was unable to stop Australia taking control at The Oval.
During his knock, Warner achieved the milestone of scoring 4000 runs in the ODIs, the fastest Australian to do so in his 93rd innings.
David Warner's stunning run of ODI form has seen him race to 4000 runs in the format, breaking Dean Jones' Australian record and seeing him become the equal-third quickest to the milestone overall, level with Virat Kohli.
Bangladesh got an advantage after the match being washed out.
Fans cheer for Bangladesh as they take selfie with OPPO F3.