Weather Comparison
Side-by-side weather comparison for September
| Metric | Vienna | Los Angeles | Better |
|---|---|---|---|
| Average HighHigher is warmer | 20°C (68°F) | 22°C (72°F)▲ | Los Angeles |
| Average LowHigher is milder | 12°C (54°F) | 13°C (55°F)▲ | Los Angeles |
| Rain DaysFewer is drier | 9 days | 4 days▲ | Los Angeles |
| PrecipitationLess is drier | 72 mm | 45 mm▲ | Los Angeles |
| Sunshine HoursMore is sunnier | 9h/day▲ | 4h/day | Vienna |
| HumidityLower is more comfortable | 65% | 65% | Tie |
| UV IndexLower is safer | 6 | 6 | Tie |
| Wind SpeedCalmer is better | 18 km/h | 15 km/h▲ | Los Angeles |
Vienna and Los Angeles are closely matched in September. Neither city has a clear advantage across all metrics. Your decision should come down to personal preference, cultural interests, and travel logistics rather than weather alone.
Vienna sits in the comfortable travel range at 20°C. Los Angeles is also comfortable at 22°C.
For travelers who prioritize dry weather, Los Angeles is the stronger choice in September. Vienna receives 5 more hours of sunshine per day, which matters for sightseeing and outdoor activities.
Vienna reaches an average high of 20°C (68°F) and drops to 12°C (54°F) at night during September. The daily temperature range is 8°C, meaning moderate variation throughout the day.
Los Angeles averages 22°C (72°F) for the high and 13°C (55°F) for the low, with a daily range of 9°C. The 2°C difference is noticeable but not dramatic.
Both cities are in the Northern Hemisphere, so they share the same seasonal pattern in September.
Vienna receives approximately 72 mm of rainfall across 9 rain days during September. You can expect rain roughly every other day.
Los Angeles sees 45 mm over 4 rain days. That makes Los Angeles the drier option by 5 rain days and 27 mm of total precipitation.
Both cities share similar humidity levels at 65%.
Highs of 20°C, lows of 12°C, 9 rain days
Highs of 22°C, lows of 13°C, 4 rain days
Pack for both: light layers, a light jacket for evenings, sunscreen. 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 | Vienna | Los Angeles | ||
|---|---|---|---|---|
| High | Rain | High | Rain | |
| Jan | 3°C | 8d | 16°C | 6d |
| Feb | 6°C | 8d | 19°C | 5d |
| Mar | 10°C | 10d | 22°C | 4d |
| Apr | 16°C | 9d | 26°C | 2d |
| May | 20°C | 12d | 28°C | 1d |
| Jun | 24°C | 12d | 29°C | 1d |
| Jul | 26°C | 12d | 28°C | 1d |
| Aug | 26°C | 10d | 26°C | 2d |
| Sep | 20°C | 9d | 22°C | 4d |
| Oct | 15°C | 9d | 19°C | 5d |
| Nov | 9°C | 9d | 16°C | 6d |
| Dec | 4°C | 9d | 15°C | 7d |
Vienna Weather in September
Full forecast, packing tips, and activities
Los Angeles Weather in September
Full forecast, packing tips, and activities