Gullfoss: water levels by month
Short answer: Gullfoss carries the most water in July (about 275 m³/s on the Hvítá) and the least in March (about 63 m³/s, 4.4 times less).
Snowmelt peaks in early summer; in winter parts freeze into ice curtains.
River flow through the year
| 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 |
Tours
Questions
When is the best time to see Gullfoss?
Gullfoss carries the most water in July (about 275 m³/s on the Hvítá) and the least in March (about 63 m³/s, 4.4 times less). Snowmelt peaks in early summer; in winter parts freeze into ice curtains.
When is Gullfoss at its lowest?
March has the lowest average flow (23% of the July peak).
Average daily river discharge 2005-2024 from the GloFAS v4 hydrological reanalysis (Copernicus Emergency Management Service) via Open-Meteo, for the model river cell nearest the falls. Dams and diversions upstream can change real flow on the day.