Iceland 
In numbers.
16m³/s
Average flow
estimate
May–Jul
Sep
Best months
38m
Elevation
The water at Glanni, month by month
It roars from December to May.
The fullest months: from December to May, with the snowmelt.
- 25 m³/sJan
- 27 m³/sFeb
- 26 m³/sMar
- 34 m³/sApr
- 24 m³/sMay
- 15 m³/sJun
- 7.9 m³/sJul
- 8.0 m³/sAug
- 19 m³/sSep
- 17 m³/sOct
- 19 m³/sNov
- 28 m³/sDec
From about 7.9 m³/s in the lowest month to 34 m³/s in the highest. Best months to go, with plenty of water and pleasant days: from May to July and September.
Estimate: the timing comes from rain, snowmelt and evaporation (NASA POWER, 1991–2020); the amounts from the river model of HydroATLAS (WaterGAP, 1971–2000). Dams upstream can change the real flow.
Waterfall in Iceland
Glanni is a waterfall in Iceland.
Getting there.
- Parking 280 m awaynearest car park in OpenStreetMap, straight line
- Reykjavík Domestic Airport (RKV)nearest airport with scheduled flights · 72 km in a straight lineCar hire at RKV airport (Reykjavík)Discover Cars · Affiliate link↗
- From May to July and Septemberbest months to go (estimate)
Plan your visit
Stay, explore and get there
Some links above are affiliate links: if you book through them we may earn a commission, at no extra cost to you. It never changes what the data on this page says.
Seen from the sky.
8 × 8 km of cloud-free satellite image, with what OpenStreetMap knows around the falls.
N
2 km
Sentinel-2 cloudless 2016 (EOX, CC BY 4.0), 8 × 8 km, north up. Points © OpenStreetMap contributors.
The line follows the river as mapped in OpenStreetMap; heights from the 30 m Copernicus model, which smooths narrow drops — the published height of the falls is the one above.
Around the falls the river drops 18 m in 3.3 km. Here the river runs about 15 m below the lower rim of its valley.
What is around.
- 4viewpointsGlanni and 3 more
- —waymarked walking routes
- 6car parks
- —swimming spots
- 2picnic sites
- 1toilets
- 1information boards and visitor centres
- —bus stops within 1 km
- 2other named waterfalls within 4 kmLaxfoss
- —caves
- —campsites
- 3hotels, B&Bs and huts within 6 kmHraunsnef, Hótel Bifröst
- —restaurants and cafés within 3 km
Counted in OpenStreetMap, the map anyone can edit, up to 2 km around the falls (unless noted). A low number may just mean nobody has mapped it yet. © OpenStreetMap contributors (ODbL).
Weather
The weather, month by month.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Afternoon °C | 0 | 0 | 1 | 5 | 9 | 14 | 16 | 14 | 10 | 5 | 1 | 0 |
| Night °C | -5 | -5 | -4 | -1 | 2 | 6 | 8 | 7 | 4 | 0 | -3 | -5 |
| Rain & snow (mm) | 118 | 110 | 104 | 92 | 75 | 70 | 87 | 92 | 124 | 108 | 104 | 118 |
| Wet days | 21 | 19 | 20 | 17 | 17 | 16 | 18 | 18 | 20 | 19 | 19 | 20 |
| Sun h/day | 0.0 | 0.8 | 3.4 | 5.3 | 7.3 | 8.6 | 6.2 | 5.1 | 3.0 | 1.4 | 0.2 | 0.1 |
| Snow on the ground (cm) | 33 | 35 | 36 | 21 | 12 | 1 | 0 | 0 | 3 | 12 | 18 | 23 |
Long-term averages 1991–2020 (NASA POWER) for a cell about 55 km wide, with temperatures carried to the height of the falls (38 m) at −6.5 °C per 1,000 m. Not a forecast.
Photos
Through visitors' eyes.
Recent years
Wet years and dry years
Rain of each month as a share of the 1991–2020 average. A wet season above 100 % usually means a fuller waterfall.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2020 | 165% | 91% | 102% | 99% | 106% | 141% | 94% | 142% | 123% | 75% | 99% | 90% |
| 2021 | 78% | 64% | 128% | 97% | 37% | 135% | 91% | 88% | 157% | 133% | 140% | 60% |
| 2022 | 152% | 71% | 157% | 78% | 129% | 133% | 117% | 128% | 79% | 78% | 54% | 42% |
| 2023 | 81% | 153% | 51% | 61% | 235% | 150% | 32% | 67% | 80% | 98% | 54% | 68% |
| 2024 | 89% | 74% | 83% | 52% | 135% | 123% | 119% | 122% | 74% | 122% | 110% | 133% |
| 2025 | 97% | 114% | 140% | 60% | 95% | 125% | 125% | 90% | 117% | 87% | 37% | 79% |
130% wetter than usual 70% drier than usual
Compare with the waterfalls nearby.
Glanni
Iceland
- —Height
- 16 m³/sAverage flow
- May–Jul, SepBest months
About these numbers
| Names, height, width, river | Wikidata (Q1842875) · CC0 |
|---|---|
| River flow and catchment | HydroATLAS / RiverATLAS v1.0 (Linke et al. 2019) · CC BY 4.0 |
| Climate | NASA POWER, 1991–2020 |
| Relief, river profile, 3D model | Copernicus DEM GLO-30 · © DLR e.V., © Airbus Defence and Space GmbH, Copernicus/ESA |
| Paths, viewpoints, parking | © OpenStreetMap contributors · ODbL |
| Images | EOX Sentinel-2 cloudless 2016 · CC BY 4.0; Wikimedia Commons |
Every figure is an average, an estimate or a count from a public dataset. Licences and methods: data sources.
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