Average temperature in St Petersburg in the month of August is 14 with the high being 20 and lows around 12. The table below has further info:
| Month | Degrees Celsius |
|---|---|
| Temperature | 14 |
| High Temperature | 20 |
| Low Temperature | 12 |
| Sunshine Per Day | 9 |
Useful Links: St Petersburg Weather: Average Weather & Yearly Climate