But since the former Canterbury all-rounder joined the squad in Auckland two weeks ago, it has barely stopped raining.
Otago captain Craig Cumming singled out the 28-year-old for a bit of good-natured ribbing.
The skipper was quick to make the connection between the rotten run of weather and Robertson's inclusion in the squad.
And looking at the state of the surface at the Queenstown Events Centre yesterday, the possibility of a fifth consecutive washout for the luckless Volts seemed very real.
The resort had plenty of rain in the 24hrs from noon on Monday.
However, the ground drains well and the weather is meant to be fine today.
Robertson's Otago career may well get under way after all.
"It would have been nice to make my debut against Canterbury [at Molyneux Park on Monday] and get one over them," he said of his former team.
"But, after a couple of weeks of rain, we just can't wait to get out and play."
There is not a lot riding on the game for Otago or its opponent, Wellington.
Both sides are out of the running for a place in the HRV Cup final on January 2 but will be looking for a good performance to generate momentum for the one-day competition, which begins next month.
And Otago is yet to record a win in the tournament and will be desperate to finish the campaign on a positive note.
"Absolutely. But, in saying that, if we had picked up one win in those first five, we could have got on a run in these last five and won all of them.
"And 24 points would probably have been enough to reach the final.
"It is a very fickle game and one little thing can swing it.
"It is just a matter of trying to force a little luck and swing it your way."
Otago could have picked up a win against Auckland in Invercargill on December 10 but rain intervened and the Duckworth-Lewis system had the last say.
However, the Volts were well beaten in the other four games and their last four games have been abandoned.
It has been a forgettable campaign, but Robertson said the move south from Canterbury had been a good experience.
He decided to make the shift when his wife, Rachel, landed a job with the radiology department at Dunedin Public Hospital.
The couple moved to Dunedin in mid-December.
Before that, Robertson had a nightmare commute each weekend to play club cricket and trial matches.
"Obviously, you have your friends in other teams, but coming here, the boys have made me feel at ease.
"They have made the transition really easy."
Robertson was often used by Canterbury as a pinch hitter at the top of the order but it was not a role that sat comfortably with him.
"I didn't really enjoy that role, to be honest.
"I did it to fit in and Mike [Otago coach Mike Hesson] has been really good.
"He has been constantly communicating with me to let me know how he sees my role.
"He sees me as a middle-order player, coming in and trying to start against spin bowling and then hitting at the death, which suits me."
If the weather clears as promised, there is one other storm cloud on the horizon in the form of former Australian fast bowler Brett Lee.
Few have been capable of bowling as quick as Lee and, at his best, he was one of the most feared strike bowlers around.
He has collected plenty of batsmen in his time with some ferocious spells.
Who could forget the delivery that knocked Adam Parore's helmet off his head and on to the stumps, or the brutal bouncer that effectively ended Michael Papps' international career?Then there was the 161km thunderbolt he bowled to Cumming five years ago.
Perhaps he has lost some pace since then, but Robertson was not convinced.
"I'd love to face Brett Lee.
"But I don't think he has [lost any pace].
"I think he'd like people to think that, but he looked like he was bowling really well the other day against Auckland."
The teams for Queenstown clash
Otago: Aaron Redmond, Hamish Rutherford, Craig Cumming (captain), Darren Stevens, Chris Nash, Derek de Boorder, Sam Wells, Iain Robertson, Neil Wagner, Warren McSkimming, Nick Beard, Darren Broom, James McMillan.
Wellington: Grant Elliott (captain), Harry Boam, Marc Calkin, Mark Houghton, Ronald Karaitiana, Brett Lee, Chris Nevin, Neal Parlane, Michael Pollard, Jeetan Patel, Stewart Rhodes, Luke Wright.
