Lots of great restaurants in Santa Monica, with this weather, pick something with a patio.
Whist at Viceroy, by the pool, under a cabana.
Abode on the patio
Michael's on the patio
Catch at Casa del Mar (great view, great food)
These are all chef-driven restaurants with something for everyone. Great steaks at all.
Other ideas, for more of a party/hip atmosphere (although Viceroy is happening)
Ivy at the Shore (quintessential LA)
Chez Jay (local favorite dive/steak place)
My favorite patio dining in SM is Wilshire--fresh, organic ingredients, beautiful outdoor atmosphere, great drinks, and good service.
Musha has great selection of Japanese izakaya-type dishes to be had with sake/beer.
La Botte has the best Italian. Get the chef's tasting menu--fabulous food and excellent service.
2454 Wilshire Boulevard, Santa Monica, CA 90404
424 Wilshire Blvd, Santa Monica, CA 90401
La Botte Ristorante
620 Santa Monica Boulevard, Santa Monica, CA 90401
If you're interested in Polish, try Warszawa.
For lunch, hit up Bay Cities Deli and/or Father's Office.
In addition to Josie and Via Veneto (one of my LA Italian faves), there's Melisse and Jiraffe.
Are you interested at all in sushi? Quite a few options not too far if ya are...