Rain
Despite any bursts of heavy rain, watering is of paramount importance, as the downpours will mainly run off rather than penetrating to the water table.
Water reserves will still be low, and plants will be using up more water than usual, because of the higher temperatures.
Watering during the rain can actually be a smart move, as the rain will have wetted the soil surface, making absorption more efficient. Use grey recycled household water or stored rainwater wherever possible.
Dew can be heavy at this time of year, which helps limit drought stress, particularly to smaller shrubs, herbaceous and annual plantings.
Sunshine
August is generally a bit duller than July, with increasingly marked differences in day length between the north and the south of the UK.
This means that the growing season is beginning to wind down, even though temperatures are still warm.
New sowings or cuttings may struggle, even with extra heat, and fertiliser and water requirements will be less than earlier in the summer.
Temperature
During sunny days, temperatures can reach 35°C plus in some places making ventilation in the greenhouse and conservatory a priority - as will ensuring that fruit trees and border plants are not overcrowded.
If the air can circulate around them, this will reduce the risk of fungal disease. Shading will also be necessary on sunny days. Remember to keep ponds and water features topped up.
Wind
Gales are uncommon in August, but strong winds are possible in coastal areas, particularly in the north and west of England, and in Scotland, particularly the western isles.
Ventilation of the greenhouse or conservatory will be a priority. Fruit trees and border plants will benefit from being pruned or thinned if overcrowded, as freely circulating air will help to reduce the risk of fungal disease.
Despite the still conditions, it is worth checking plant stakes and supports, as thunderstorms and heavy rain can be just as damaging as high winds.