We don't have synonyms for chamsin yet — it may be a rare, specialized, newly coined, or misspelled word. The closest thesaurus entries we have are khamsin, chasin and hamsin.
(n) :
Alternative form of khamsin. [A hot, dry wind, common in Egypt, Sudan and the Levant towards the end of March and April, which blows (for about 50 days each year) from the desert, bringing with it hot weather and sand / sandstorms.]
(n) :
Alternative form of khamsin. [A hot, dry wind, common in Egypt, Sudan and the Levant towards the end of March and April, which blows (for about 50 days each year) from the desert, bringing with it hot weather and sand / sandstorms.]