"We've got plenty to work on but we'll get there ... It's probably the first bit of rain we've seen this year and it's just part and parcel of the game and in a way it was pretty refreshing," he said.
The first spell was pretty even and it wasn't until later in the second quarter that the Chiefs finally took the advantage after a typical bustling Ben Tameifuna try.
The Blues then went off the boil and conceded back-to-back tries to trail the Chiefs 24-6 at the break.
With both teams radically changing their line-ups for the second half and another downpour making handling conditions even more difficult, the spell was tough viewing for the good sized crowd of over 3000.
The Blues forwards broke the deadlock with their first try but neither team really dominated until well into the final quarter, when the Chiefs scored the best try of the game, finished off by loosie Tevita Koloamatangi.
They scored another try on the counter as the Blues began to chance their arm before Blues' replacement first five-eighths Simon Hickey scored a well deserved try to end the scoring action.
The Blues management are unlikely to be pleased with how the team performed overall but may yet benefit from using the game as a motivational tool in the remaining two weeks before the season kicks off at QBE Stadium at North Harbour - with another encounter against the Chiefs.
The Blues set-piece was tidy and there was some good defence with some fleeting glimpses of what the side is capable of on attack.
They will be relieved when their All Blacks come back on-line with Jerome Kaino, Keven Mealamu, Charlie Faumuina, Patrick Tuipulotu and Charles Piutau still being "transitioned" back into the team after the end of the year European tour, and Tony Woodcock and Luke Braid still on their way back from injury.
Cowen said the conditional use of the All Blacks was just part of the playing landscape in a World Cup year.
"We're all in the same boat - it's a matter of who deals best with it," he said.
The only injury concern from the match was a toe injury to returning Northland Taniwha Dan Bowden.
The Blues final pre-season game is against the Hurricanes at North Harbour next Friday, at 4pm.