It’s only a touch late. The main problem with planting now is that the plant needs time to establish and ripen fruit before the cold weather, which is one reason cherry tomatoes are a better option for late planting. If you have a spot that is warm and sheltered enough they can survive over winter too, they are only an annual plant here because they are killed off by the cold. Tomatoes don’t really like full summer sun at any age, it won’t be more of a problem because they are planted now. Cherry tomato plants also seem to be more resistant to sun too.