Long-range forecasts provide information on how weather, averaged over the next few months, is expected to vary from normal. Long-range forecasts are indications of an overall picture, as it is impossible to forecast individual events so far ahead; the short-range forecasts are where the details begin to appear.
Long-range forecasts have global coverage and are used in areas like Africa to help plan for year-to-year variability in rainy seasons.
As well as issuing the seasonal forecasts we also issue appraisals of those forecasts by the end of the following season. Below are our latest seasonal forecasts and appraisals of those recent forecasts.
Winter 2009/10 — Updated: Wed 30 Dec 2009
Autumn 2009 forecast appraisal — Issued: Fri 26 Feb 2010
Summer 2009 forecast appraisal — Issued: Fri 4 Dec 2009
Spring 2009 forecast appraisal — Issued: Tue 8 Sep 2009