Is the air very humid in the UK in summer?

The UK has a maritime temperate broad-leaved forest climate, which is mild and humid all year round. Usually the maximum temperature does not exceed 32℃, and the minimum temperature does not fall below -10℃. The average temperature is 4~7℃ in January and 13~17℃ in July. It is rainy and foggy, especially in autumn and winter. Therefore, London is known as the Fog City. The average annual precipitation is about 1000 mm. The annual precipitation in the mountainous areas in the north and west exceeds 2000 mm, while in the central and eastern parts it is less than 800 mm. February to March is the driest, and October to January is the wettest. The national climate type is temperate maritime climate.