The Environment Agency has officially declared prolonged dry weather across Bristol, Somerset, Dorset, and Wiltshire due to limited rainfall and high temperatures.
The conditions are affecting river and groundwater levels and raising concerns about environmental impacts.
Matt Akers, environment planning and engagement manager at the Environment Agency, said: “There’s been a big difference in the environment in the past month.
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“June had 132 per cent of its typical rainfall.
“This month we’ve had less than 1 per cent so far.
“We are seeing low river flows in places like the Hampshire Avon and water temperatures of 24C which is almost tropical.
“The Environment Agency is keeping a close eye on the situation and remains ready to respond to incidents created by these conditions.”
The agency is warning of an increased risk of environmental incidents this summer.
Possible issues include reduced river flows, elevated water temperatures, and fish struggling for oxygen due to algal blooms and weed growth.
Groundwater sites are already recording below-normal water levels and the forecast remains largely dry.
The Environment Agency has already responded to incidents involving distressed fish, most recently relocating hundreds in the River Tarrant in Dorset.
Plans are in place for weed cutting and vegetation clearance to support river health.
Despite a wet start to 2026, the West Country recorded below-average rainfall from March to May.
June’s above-average rain fell mostly in the first ten days and did not cover the entire region evenly.
The National Drought Group, which includes representatives from the Met Office, government, water companies, and conservation groups, is actively monitoring the situation.
The public is being urged to conserve water to help ease the pressure.
The Environment Agency said: “Everybody has a part to play in using water wisely.
“There are simple ways people can use less water, including shortening your shower, fixing home leaks, swapping the hosepipe for a bucket or watering can, using a washing up bowl and the eco mode on your appliances.”
