Average temperature within London during the duration of April is 9 with usual highs being around 13 with lows of 6 celsius. We have put some more information here:
| Month | Degrees Celsius |
|---|---|
| Temperature | 9 |
| High Temperature | 13 |
| Low Temperature | 6 |
| Sunshine Per Day | 6 |
Useful Links: London Weather: Average Weather & Yearly Climate