Christchurch has a dry, temperate climate, with mean daily maximum air temperatures of 22.5 °C (72 °F) in January and 11.3 °C (52 °F) in July. Under the Köppen climate classification, Christchurch has an oceanic climate (Cfb). The summer climate is often moderated by a sea breeze from the Northeast, but a record temperature of 41.6 °C (107 °F) was reached in February 1973. A notable feature of the weather is the nor'wester, a hot föhn wind that occasionally reaches storm force, causing widespread minor damage to property.