Wind speed
Generally, wind speeds tend to be higher in the highlands, but topographical features can aggravate winds and cause strong gusts in lowland areas. Wind speed in the lowlands reaches on 10–20 days per year, but on upwards of 50 days per year in places in the highlands. The strongest measured 10-minute sustained wind speed is and the strongest gust . Heavy dust storms can be generated by strong glacial winds, and can be very strong. Up to of material can be in motion per transect per hour. These storms are very frequent in the early summer in the arid highland areas north of the Vatnajökull glacier.