Gullfoss in September
Short answer: In September, Gullfoss averages about 116 m³/s, 42% of the July peak (medium). Over 2005-2024 daily flow in September ranged from 46 to 346 m³/s.
Medium: 42% of peak
Snowmelt peaks in early summer; in winter parts freeze into ice curtains.
All months
| Month | Flow (share of peak) | Average m³/s | Level |
|---|---|---|---|
| January | 24% | 67 | Low water |
| February | 26% | 71 | Low water |
| March | 23% | 63 | Low water |
| April | 27% | 75 | Low water |
| May | 39% | 108 | Low water |
| June | 95% | 261 | High water |
| July | 100% | 275 | High water |
| August | 40% | 109 | Low water |
| September | 42% | 116 | Medium |
| October | 38% | 105 | Low water |
| November | 29% | 80 | Low water |
| December | 25% | 69 | Low water |
Back to Gullfoss Gullfoss tours
Questions
Is Gullfoss worth visiting in September?
In September, Gullfoss averages about 116 m³/s, 42% of the July peak (medium). Over 2005-2024 daily flow in September ranged from 46 to 346 m³/s. Snowmelt peaks in early summer; in winter parts freeze into ice curtains.