Even a grizzled, veteran coach like Dunn Muramaru gets a little bit blue when so many baseball games are rained out.

“I don’t know when we’ll make up these games,” the Mid-Pacific guru said on Friday, not long after learning that his team’s home game with Punahou had been postponed.

On Friday, the National Weather Service had a flood advisory in effect. Again. A week of heavy rains on Oahu has made life dreary for many, including baseball players and coaches.

Muramaru and a legion of coaches in the Interscholastic League of Honolulu are in the early stage of the season. There’s ample time to reschedule. The problem is that half the teams in the private-school league have no home field, relying more than ever on the diamonds at Patsy Mink Central Oahu Regional Park in Waipio.

“I can’t have kids playing four games a week. With CORP, we’ve got to get kids out of school at 1, 2 o’clock,” ILH baseball coordinator Carl Schroers said of the commute. “That’s too much.”

Without the rainouts, teams play two to three games per week. But with the postponements and the possibility of more rainouts in the coming days, Schroers is concerned.

“We might end up with teams playing five games a week. We might lose more games tomorrow (Saturday),” he said. “The fields at CORP take 1 1⁄2 days to dry out.”

Schroers, who is also co-athletic director at ‘Iolani, has called a coaches meeting for today.

“We’ll have to reformat (the schedule),” he said.

In the Oahu Interscholastic Association, baseball coordinator Glenn Nitta shares the same concerns. The weight of the problem is lighter, though, since every school has a field of its own or a nearby facility.

“Right now, it’s still early,” said Nitta, the AD and former baseball coach at Mililani.

If necessary, he noted, OIA teams will play up to four games per week.

The wet weather isn’t quite as big an issue for softball.

“We have way more fields to work with,” Schroers said. “Softball fields tend to dry out faster.”

For Muramaru and his coaching brethren, it’s back to the batting cages, at least for teams that have a covered cage.

“We clean up the facilities, lift weights. The other day, the kids were playing XBox,” Muramaru said. “Arms get rested, that’s one thing, and the kids run a little. But there’s not much else we can do.”