NYC restaurants, diners frustrated by al fresco dining regulations

Sunshine is in the forecast, but the chance of dining al fresco for New Yorkers is still low.

City restaurants say their outdoor seating is limited or non-existent due to new regulations — which first went into effect last August and place a litany of size and clearance restrictions on setups — and a bureaucratic backlog.

“So many people are calling and asking to reserve tables outside, and I have to keep telling them no,’’ Enrico Proietti, owner of Bella Blu on the Upper East Side, told The Post.