Normally average temperatures in Hainan throughout the month of January is 20. With the average high being 26 degrees and a low of 17 celsius. The table below includes more detail:
| Month | Degrees Celsius |
|---|---|
| Temperature | 20 |
| High Temperature | 26 |
| Low Temperature | 17 |
Useful Links: Hainan Weather: Average Weather & Yearly Climate