January is the hottest month in Salta with an average temperature of 22°C (72°F) and the coldest is June at 12°C (54°F) with the most daily sunshine hours at 11 in September. The wettest month is January with an average of 182mm of rain. That said, Salta and the the northwest is a hugely varied region parts of which remain dry throughout most of the year.
 

Average temperatures (Cº)

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
High Cº 27 26 25 23 21 19 20 22 24 26 27 28
Low Cº 16 16 15 12 8 4 3 4 7 11 14 16

 

Average rainfall (mm)

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
mm 182 163 118 37 9 3 4 4 7 26 65 138
Days 14 13 12 7 4 2 2 2 3 6 9 14
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