Best Time to Hike ST521 Polkovnik Serafimovo - Srednogorci
Month-by-month temperatures and rainfall for ST521 Polkovnik Serafimovo - Srednogorci, Bulgaria, based on 2-year climate normals.
Month-by-month weather on ST521 Polkovnik Serafimovo - Srednogorci
| Month | Avg high | Avg low | Rainfall | Rainy days |
|---|---|---|---|---|
| January | 45°F7°C | 26°F-4°C | 37 mm | 6 |
| February | 46°F8°C | 27°F-3°C | 36 mm | 7 |
| March | 55°F13°C | 33°F1°C | 69 mm | 14 |
| April | 59°F15°C | 38°F3°C | 61 mm | 11 |
| May | 63°F17°C | 44°F7°C | 81 mm | 17 |
| June | 79°F26°C | 53°F12°C | 12 mm | 1 |
| July | 83°F28°C | 58°F14°C | 46 mm | 7 |
| August | 80°F27°C | 55°F13°C | 23 mm | 5 |
| September | 72°F22°C | 50°F10°C | 39 mm | 6 |
| October | 61°F16°C | 40°F4°C | 82 mm | 7 |
| November | 53°F12°C | 34°F1°C | 77 mm | 9 |
| December | 46°F8°C | 30°F-1°C | 115 mm | 10 |
Highlighted rows are the recommended hiking window. Climate normals via Open-Meteo (2-year average). Mountain weather varies — always check a live forecast before you set off.
The best months to hike ST521 Polkovnik Serafimovo - Srednogorci are June, August, September. Expect daytime highs around 77°F25°C and nights near 54°F12°C.
Pack flexible layers and a reliable rain shell — conditions can shift quickly in the mountains.
Full route guide, interactive map and free GPX download.
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