"This table is hot."
Translation:هٰذِهِ الْطّاوِلة حارّة.
This sentence can mean one of two things: "The air right around this table is uncomfortably hot." or "I am eating this table and it is spicy." حارّ refers to weather or spiciness, not temperature.
To describe the table as hot in temperature, you'd say:
هذه الطاولة سَاخِنَة.
haadhihi T-Taawilatu saa5ina(tun).