The monthly time series of England and Wales Precipitation (HadEWP) begins in 1766, making this the longest instrumental series of its kind in the world.

The series is currently based on weighted averages of daily observations from a network of stations in five regions. View the annual timeseries of HadEWP since 1766.

HadEWP monthly totals (text file).

		Daily England and Wales precipitation totals are based on weighted totals from a network of stations within each of five England and Wales regions. Provisional daily totals, with a two-day time lag, are available on request. A full quality control is performed on the 5th of each subsequent month, allowing monthly totals to be updated.
Image is updated monthly

Alexander, L.V. and Jones, P.D., 2001: Updated precipitation series for the U.K. and discussion of recent extremes. Atmospheric Science Letters doi:10.1006/asle.2001.0025.

Gregory J.M., Jones, P.D. and Wigley, T.M.L., 1991: Precipitation in Britain: an analysis of area-average data updated to 1989. Int J Climatol, 11, 331-345.

Jones, P.D. and Conway, D., 1997: Precipitation in the British Isles: an analysis of area-average data updated to 1995. Int J Climatol, 17, 427-438.

Wigley, T.M.L. and Jones, P.D., 1987: England and Wales precipitation: a discussion of recent changes in variability and an update to 1985. J Climatol, 7, 231-246.

Wigley, T.M.L., Lough, J.M. and Jones, P.D., 1984: Spatial patterns of precipitation in England and Wales and a revised homogeneous England and Wales precipitation series. J Climatol, 4, 1-25.

Please direct all queries about the data set to climat@metoffice.gov.uk.

Further data, including data for other UK regions and archived data and charts, can be found via the HadUKP link on www.hadobs.org.

Please note that this series differs from the England and Wales Rainfall series produced by the National Climate Information Centre, which uses all available data since 1914.