Inflation is at 2.9 per cent and has increased by 0.2 per cent since May, indicating that prices are going up much faster than wages.
The latest inflation figure represents a 14-month high in the UK but was lower than the 3 per cent forecast by markets.
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Temperatures will reach around 28 Celsius (82F) at their highest.
A minute's silence will be observed at 11am on Thursday in remembrance of those who lost their lives in the Manchester Arena attack.
New research has found those who consumed two cups had a 35% reduced risk, and for those who drank five cups, the risk halved.