What kind of peppers?
In my experience here in NJ...
Hot peppers will be productive even in less hours sun than Tomatoes, but hot peppers can take more blazing sun and drier conditions than tomatoes.
Tomatoes can benefit from noonday shade and more even moisture levels but too much will water down their flavor and cause some varieties to split/crack.
Sweet/bell peppers need more LIGHT than tomatoes to fruit well but is a wimp in heat and hot sun, and need more moisture to develop juicy and crunchy thick walled fruits.
BTW -- it's EXCELLENT that you are paying attention to the micro-climates around your garden.
Ok, on the seed package, it says California Wonder Pepper, "Bell Type", "good for stuffing".
So perhaps these need more light than tomatoes?
To Rainbow: The package says Burpee's Summer Choice hybrid tomato. So indeed, it looks like they
are heat-resistant type. The peak in Tucson gets around 114 degrees or so, but it doesn't last long, maybe only part of one day.
The lady at Home Depot recommended 30% netting cloth to shade the tomatoes, if in full sunlight, but
as I said, the wall I share with my neighbor will put a shade down after 1 PM or so, so maybe I won't
need the netting?
When you say I can do a fall/winter crop, what date would be good to start that cycle? The tomatoes are indeterminate.....doesn't that mean they will have tomatoes year-round?