Example 1

Company A is a theme park operator and its revenues are badly affected when rainy week-ends occur during the summer months (the peak season for theme parks).

The company operates several theme parks in the west of London (UK) and is contemplating a purchase of the following weather derivative.

  • Option Type: Call Option
  • Reference Weather Station: London Heathrow Airport, UK (WMO #3772) 
  • Risk Period: From 1 June until 30 September, Saturdays and Sundays only
  • Weather Index: Total number of Rainy Days at the Reference Weather Station during the Risk Period
  • Rainy Day: A day with more than 3mm of rainfall, as recorded by the Data Provider
  • Data Provider: The UK Met-Office 
  • Strike: 2 Rainy Days
  • Tick: £100,000 per Rainy Day above the Strike
  • Maximum Payout: £1,000,000
  • Settlement Amount:
    • if Weather Index > = Strike then Company A receives (Weather Index - Strike) x Tick
    • if Weather Index < Strike there is no Payout
    • All payments are subject to the Maximum Payout

This Weather Derivative covers Company A against any Saturday or Sunday (in excess of 2) where the daily rainfall measured at London Heathrow is greater than 3mm.

For example if there are a total of 7 Rainy Days in the Risk Period Company A would receive: (7-2) x 100,000 = £500,000.

The payment, if there is any, normally occurs 5 business days after the end of the Risk Period (subject to data availability).