It is traditionally one of the wetter parts of the country.
But yesterday, Scottish Water asked Stornoway residents to “use water wisely” after an unusually severe dry spell.
It comes after Moray householders were asked to do the same last week- and Aberdeenshire is expected to see the best of the summer weather across the north and north east next week.
Stornoway has experienced an unusual spell of 23 consecutive days with no rainfall, with only 31mm of rain falling in Lewis’s main town in the past month.
Residents have been advised to turn off the taps when brushing teeth or shaving, take shorter showers and only boil the kettle with the volume of water required.
Peter Farrer, Scottish Water’s chief operating officer, said: “We are encouraging everyone living and working locally to take simple steps to use water wisely. By doing so, we can significantly reduce water usage which also helps the environment, saves energy and ensures that we continue to provide clear, fresh water to customers in the area.”
To ensure homes and businesses in Stornoway are adequately provided, water will now be taken from Loch Scarabhat Mhor to feed the Stornoway Water Treatment Works as lower than normal water levels have been experienced from the main Loch Mor an Stairr feed.
The dry weather spell looks set to reappear next week as a spell of warm weather is to embrace the UK, with Aberdeenshire experiencing the best parts for northern Scotland.
Fraser Ralston, spokesman for the Met Office, said: “June has been dry over north and north-west Scotland, with most of northern Scotland having a dry month in May.
“Skye, and some of the Highlands across to Aberdeenshire experienced a third less than the traditional rainfall levels for this time of year.
“Beyond into July it is too early to say what the next few months hold, but it looks like a predominantly settled dry spell across the bulk of the north of Scotland.”
The appeal from Scottish Water comes after a similar plea was issued in Moray last week.
A spokesman said: “Scottish Water has issued advice to customers to use water wisely in two localised areas, parts of Moray and the Stornoway area of Lewis.
“The advice was issued because of prolonged dry weather in these areas, despite some recent rainfall, and, in the case of Moray, increased demand.
“Scottish Water is managing water supplies across Scotland through this extended dry period and will continue to monitor the situation closely.”