Weather Comparison
Side-by-side weather comparison for September
| Metric | Amsterdam | Barcelona | Better |
|---|---|---|---|
| Average HighHigher is warmer | 18°C (64°F) | 24°C (75°F)▲ | Barcelona |
| Average LowHigher is milder | 12°C (54°F) | 18°C (64°F)▲ | Barcelona |
| Rain DaysFewer is drier | 12 days | 11 days▲ | Barcelona |
| PrecipitationLess is drier | 70 mm▲ | 79 mm | Amsterdam |
| Sunshine HoursMore is sunnier | 8h/day | 10h/day▲ | Barcelona |
| HumidityLower is more comfortable | 65% | 65% | Tie |
| UV IndexLower is safer | 6 | 6 | Tie |
| Wind SpeedCalmer is better | 19 km/h | 16 km/h▲ | Barcelona |
Based on sunshine hours, rain days, comfortable temperatures, and humidity levels, Barcelona edges ahead as the better destination in September. Barcelona offers 10 hours of daily sunshine with only 11 rain days, while Amsterdam sees 8 sunshine hours and 12 rain days.
Amsterdam sits in the comfortable travel range at 18°C. Barcelona is also comfortable at 24°C.
For travelers who prioritize dry weather, Barcelona is the stronger choice in September. Barcelona receives 2 more hours of sunshine per day, which matters for sightseeing and outdoor activities.
Amsterdam reaches an average high of 18°C (64°F) and drops to 12°C (54°F) at night during September. The daily temperature range is 6°C, meaning relatively stable temperatures from day to night.
Barcelona averages 24°C (75°F) for the high and 18°C (64°F) for the low, with a daily range of 6°C. There is a notable 6°C gap between the two cities, so expect a very different feel.
Both cities are in the Northern Hemisphere, so they share the same seasonal pattern in September.
Amsterdam receives approximately 70 mm of rainfall across 12 rain days during September. You can expect rain roughly every other day.
Barcelona sees 79 mm over 11 rain days. That makes Barcelona the drier option by 1 rain day and 9 mm of total precipitation.
Both cities share similar humidity levels at 65%.
Highs of 18°C, lows of 12°C, 12 rain days
Highs of 24°C, lows of 18°C, 11 rain days
Pack for both: 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 | Amsterdam | Barcelona | ||
|---|---|---|---|---|
| High | Rain | High | Rain | |
| Jan | 6°C | 13d | 13°C | 6d |
| Feb | 6°C | 11d | 13°C | 6d |
| Mar | 9°C | 11d | 16°C | 7d |
| Apr | 13°C | 11d | 17°C | 9d |
| May | 16°C | 11d | 21°C | 7d |
| Jun | 19°C | 12d | 25°C | 6d |
| Jul | 21°C | 14d | 27°C | 5d |
| Aug | 21°C | 13d | 28°C | 7d |
| Sep | 18°C | 12d | 24°C | 11d |
| Oct | 14°C | 13d | 21°C | 10d |
| Nov | 10°C | 13d | 16°C | 8d |
| Dec | 6°C | 13d | 13°C | 6d |
Amsterdam Weather in September
Full forecast, packing tips, and activities
Barcelona Weather in September
Full forecast, packing tips, and activities