Overview

Piers Richard Corbyn (born 10 March 1947) is a British businessman and weather forecaster who runs the private forecasting service WeatherAction. Born in Chippenham, he has promoted alternative forecasting methods and has attracted public attention both for his weather predictions and for his outspoken views on a range of scientific and political topics. He is the older brother of former Labour Party leader Jeremy Corbyn.

Weather forecasting and methods

Corbyn's forecasting operation markets long-range predictions, sometimes claiming accuracy for periods extending months to a year ahead. WeatherAction states that its approach draws on solar activity and planetary influences combined with statistical and observational techniques rather than relying solely on numerical weather prediction models used by national meteorological services. Supporters point to instances where long-range guidance proved useful to some clients; independent evaluations of accuracy vary and mainstream meteorological agencies typically use different, model-based methods.

Controversies and public activity

In recent years Piers Corbyn has been a prominent and sometimes polarising public figure. He has voiced scepticism about widely accepted scientific positions, including aspects of climate science and public health measures, and has participated in public demonstrations. His statements and activities have generated criticism from scientists, public-health officials and parts of the media, who dispute some of his claims and characterisations.

Characteristics and public role

  • Founder and operator of a private weather forecasting business that offers subscription services and bespoke forecasts.
  • Uses a solar and observational emphasis in long-range forecasting, differing from mainstream numerical models.
  • Active in public campaigning and protests on environmental and health-related issues.
  • Frequently covered in news accounts because of high-profile statements and his family connection to national politics.

Reception and significance

Piers Corbyn's career sits at the intersection of private enterprise in meteorology, public activism and controversy. To some followers his long-range work and critiques of orthodoxy offer an alternative perspective; to many scientists and communicators his claims are contentious and often at odds with consensus positions. His profile illustrates how media attention and political links can amplify debates about expertise, risk and public policy.

Further notes

Accounts of Corbyn in news coverage and specialist commentary vary in emphasis: some report on the practical uses and clients of his forecasts, while others focus on the public disagreements his positions have provoked. For balanced understanding, readers are advised to compare WeatherAction materials with mainstream meteorological and scientific sources and to consider peer-reviewed assessments when evaluating contested claims.

See also commentary and criticism for broader context.