Normally the average weather in Lisbon in January is 9 with a general average high of 15 with lows around 8. The table below has further info:
| Month | Degrees Celsius |
|---|---|
| Temperature | 9 |
| High Temperature | 15 |
| Low Temperature | 8 |
| Sunshine Per Day | 6 |
Useful Links: Lisbon Weather: Average Weather & Yearly Climate