How is a cloud measured?
A cloud is measured using the system called oktas (or otherwise known as eighths of the sky). Firstly, meteoroligists randomly select a portion of the sky and divide it into eights. They then rate the cloud cover using a number sysem. 0 being cloudless and 8 being total cloud cover.
Cloud cover is measured in Oktas. (from the greek/Latin Octo - 8) Its an estimate of how much of the sky is covered by cloud. A clear sky is 0 Oktas, A summers day sky with fluffy clouds but lots of sky could be 1-3 oktas; An overcast sky with bits of blue showing 7 Oktas, and full overcast 8 Oktas.