Weather Comparison
Side-by-side weather comparison for September
| Metric | Warsaw | Lviv | Better |
|---|---|---|---|
| Average HighHigher is warmer | 18°C (64°F) | 18°C (64°F) | Tie |
| Average LowHigher is milder | 10°C (50°F) | 10°C (50°F) | Tie |
| Rain DaysFewer is drier | 10 days▲ | 11 days | Warsaw |
| PrecipitationLess is drier | 58 mm▲ | 73 mm | Warsaw |
| Sunshine HoursMore is sunnier | 8h/day | 8h/day | Tie |
| HumidityLower is more comfortable | 65% | 65% | Tie |
| UV IndexLower is safer | 6 | 6 | Tie |
| Wind SpeedCalmer is better | 17 km/h | 17 km/h | Tie |
Based on sunshine hours, rain days, comfortable temperatures, and humidity levels, Warsaw edges ahead as the better destination in September. Warsaw offers 8 hours of daily sunshine with only 10 rain days, while Lviv sees 8 sunshine hours and 11 rain days.
Warsaw sits in the comfortable travel range at 18°C. Lviv is also comfortable at 18°C.
For travelers who prioritize dry weather, Warsaw is the stronger choice in September.
Warsaw reaches an average high of 18°C (64°F) and drops to 10°C (50°F) at night during September. The daily temperature range is 8°C, meaning moderate variation throughout the day.
Lviv averages 18°C (64°F) for the high and 10°C (50°F) for the low, with a daily range of 8°C. The two cities feel quite similar in terms of temperature.
Both cities are in the Northern Hemisphere, so they share the same seasonal pattern in September.
Warsaw receives approximately 58 mm of rainfall across 10 rain days during September. You can expect rain roughly every other day.
Lviv sees 73 mm over 11 rain days. That makes Warsaw the drier option by 1 rain day and 15 mm of total precipitation.
Both cities share similar humidity levels at 65%.
Highs of 18°C, lows of 10°C, 10 rain days
Highs of 18°C, lows of 10°C, 11 rain days
Pack for both: warm layers, a mid-weight jacket, long trousers, waterproof jacket, compact umbrella, waterproof shoes. These items are useful in either destination during September.
The table below shows average high temperatures and rain days for every month. September is highlighted for quick reference.
| Month | Warsaw | Lviv | ||
|---|---|---|---|---|
| High | Rain | High | Rain | |
| Jan | 1°C | 10d | 0°C | 10d |
| Feb | 2°C | 10d | 2°C | 11d |
| Mar | 7°C | 10d | 7°C | 12d |
| Apr | 14°C | 10d | 14°C | 12d |
| May | 19°C | 12d | 18°C | 15d |
| Jun | 22°C | 12d | 22°C | 15d |
| Jul | 24°C | 13d | 23°C | 15d |
| Aug | 24°C | 11d | 23°C | 12d |
| Sep | 18°C | 10d | 18°C | 11d |
| Oct | 12°C | 9d | 13°C | 10d |
| Nov | 6°C | 10d | 6°C | 10d |
| Dec | 2°C | 10d | 1°C | 11d |
Warsaw Weather in September
Full forecast, packing tips, and activities
Lviv Weather in September
Full forecast, packing tips, and activities