Usually the average weather in Johannesburg during May is 12. Average high degrees are usually 20 and low average expected to be 8 degrees. We have put some more details below:
| Month | Degrees Celsius |
|---|---|
| Temperature | 12 |
| High Temperature | 20 |
| Low Temperature | 8 |
| Sunshine Per Day | 11 |
Useful Links: Johannesburg Weather: Average Weather & Yearly Climate