Typically, you can expect that the weather in Arequipa through the whole of January is 13 with usual highs being around 21 degrees with a low of 9. The table below has some further insights:
| Month | Degrees Celsius |
|---|---|
| Temperature | 13 |
| High Temperature | 21 |
| Low Temperature | 9 |
| Sunshine Per Day | 8 |
Useful Links: Arequipa Weather: Average Weather & Yearly Climate