The Fire Service has warned one small spark could start a serious wildfire, as much of Otago is at risk of fire.
An early dry spell in the region has prompted warnings for holiday-makers to take extra care.
Conditions were very dry in the popular holiday spots of Central Otago and the Upper Waitaki, where a total fire ban was in place, Stephanie Rotarangi, Otago Rural Fire Authority chief executive, principal rural fire officer said.
The dry conditions had come earlier this year in those areas this year.
In such conditions holiday-makers need to be careful to avoid causing fires, she said.
''Even a small spark has the potential to start a serous wildfire in these conditions.''
Conditions were also becoming very dry in the Strath Taieri, Oamaru and Queenstown Lakes areas.
In areas with a prohibited season in place, the only flames allowed were on gas barbecues.
''It is important to note the fire danger in your area, have firefighting equipment handy in your car, crib or caravan and also discuss an escape plan with your family and friends in the case that fire does break out.''
Given the fire risk, those using equipment such as lawnmowers needed to ensure the machinery was maintained, not work at the hottest time of day and to keep fire suppressant equipment nearby, she said.
''In these conditions a fire can travel for miles.''
However, conditions in South Otago and the Catlins were still quite wet and no restrictions were in place, although the warm weather also meant river levels were dropping there, as well.
The Dunedin City Council and Otago Regional Council were keeping a close eye on river levels.
Farmers should continue to manage their irrigation efficiently, and plan ahead in case the need for rationing arises, the ORC advised.
DCC water operations team leader Gerard McCombie said demand in Dunedin had dropped slightly from a peak on December 16.
Flows in Deep Creek and Deep Stream were dropping. The Waikouaiti system was also running low, as holidaymakers had caused increased demand.
Demand for water in Mosgiel had doubled so far this month but, as the town relied on bore water, the system was not as sensitive.
People needed to use water carefully, especially when watering their gardens, he said.
