Wales usually experiences the highest levels of rainfall in the winter months. Throughout this period, the most rainfall recorded was in December 2015, at millimeters. This was no surprise as there were over **raindays in this month. A rainday is when there is a total of 1mm or more of rain recorded in a day.
Annual rainfall
Over the past two decades, the annual rainfall in Wales has fluctuated. The year 2000 experienced the most amount of rain at* mm. 2010 was the driest year at* mm. Despite the high levels of rain in Wales, it is not the wettest country in the United Kingdom.**** on average has the most rainfall, with*** being the driest.
Sunshine hours
With its reputation for rain, sunshine is not the most common sight in Wales. In 2024, the number of total sunshine hours was below the United Kingdom’s average. Typically, May and June register the highest monthly sunshine hours in Wales, with May 2020 seeing a record of *hours.
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Met Office. (October 1, 2025). Total monthly rainfall in Wales from January 2015 to September 2025 (in millimeters) [Graph]. In ÌÇÐÄÆƽâ°æ. Retrieved July 20, 2026, from /statistics/610083/monthly-rainfall-in-wales/
Met Office. "Total monthly rainfall in Wales from January 2015 to September 2025 (in millimeters)." Chart. October 1, 2025. ÌÇÐÄÆƽâ°æ. Accessed July 20, 2026. /statistics/610083/monthly-rainfall-in-wales/
Met Office. (2025). Total monthly rainfall in Wales from January 2015 to September 2025 (in millimeters). ÌÇÐÄÆƽâ°æ. ÌÇÐÄÆƽâ°æ Inc.. Accessed: July 20, 2026. /statistics/610083/monthly-rainfall-in-wales/
Met Office. "Total Monthly Rainfall in Wales from January 2015 to September 2025 (in Millimeters)." ÌÇÐÄÆƽâ°æ, ÌÇÐÄÆƽâ°æ Inc., 1 Oct 2025, /statistics/610083/monthly-rainfall-in-wales/
Met Office, Total monthly rainfall in Wales from January 2015 to September 2025 (in millimeters) ÌÇÐÄÆƽâ°æ, /statistics/610083/monthly-rainfall-in-wales/ (last visited July 20, 2026)
Total monthly rainfall in Wales from January 2015 to September 2025 (in millimeters) [Graph], Met Office, October 1, 2025. [Online]. Available: /statistics/610083/monthly-rainfall-in-wales/
