I expect that by August, the movement of cars around Ireland will be unhindered. At present there are some slight delays at the border between Northern Ireland and the Irish Republic, because the police and vetinary officers on both sides of the border are disinfecting the wheels of vehicles. There is understandable caution at ports, rail stations and airports, to ensure that the disease is not brought into Ireland from elsewhere. Passengers are being asked to walk across disinfectant mats as they enter the country. All that happens is that the soles of your shoes are momentarily damp.
Food is safe to eat, especially food produced in Ireland.
You will not catch the disease yourself. Weather Temperatures in August typically range from a high of about 20 C to a low of about 10 C, similar to that of our last meeting in Victoria.