Although rhododendrons like moist soil, they do not like it to be waterlogged, preferring well-drained soil. It sounds like even though the soil in the area you describe isn’t soggy at all times of the year, it would not be ideal for the rhododendrons, which might suffer. If you could find a drier place to plant them, they might be happier. Or if there is not one available, and you still would like to try planting these shrubs, then you might try planting them in a raised bed, to keep the soil drier (although in dry or hot weather, you’d need to water more often).
Although rhododendrons like moist soil, they do not like it to be waterlogged, preferring well-drained soil. It sounds like even though the soil in the area you describe isn’t soggy at all times of the year, it would not be ideal for the rhododendrons, which might suffer. If you could find a drier place to plant them, they might be happier. Or if there is not one available, and you still would like to try planting these shrubs, then you might try planting them in a raised bed, to keep the soil drier (although in dry or hot weather, you’d need to water more often).