Normally the average weather in Lewes right through the month of December is 7. You can expect highs around 8 and typical average low being around 4 celsius. The table below includes more detail:
| Month | Degrees Celsius |
|---|---|
| Temperature | 7 |
| High Temperature | 8 |
| Low Temperature | 4 |
Useful Links: Lewes Weather: Average Weather & Yearly Climate