Hi Angelica, I grow my spider plants outdoors, and during summer they want more watering, since our summers are really hot and dry. My plants are either in hanging baskets or on big containers and they just thrive there, loving it more when they are pot bound. Looking at your plants, to me they seem thirsty. But do check the roots to see how they are. They can survive full sun but really likes getting shaded.
Just showing you here how my spider plants roots looked like when I have repotted them one time, you can see they have such thick roots that ably holds water. But even then, I keep them really well hydrated during our hot summertime weather.
