Waterville Rainfall & Precipitation: Monthly Averages and Year-Round Insights
This page shows both the average monthly rainfall and the number of rainy days in Waterville, Kerry, Ireland. These averages rely on historical data collected over 30 years, from 1990 to 2020. Let's now guide you through the details for a complete overview.
Waterville is known for its substantial rainfall, with annual precipitation reaching 1550 mm.
Monthly Precipitation Levels
The average number of days each month with precipitation (> 0.2 mm)
While rainfall varies throughout the year, each season offers its own charm. December brings wetter days averaging 173 mm of precipitation, spread over 24 rainy days.
In contrast, June experiences a drier climate, with about 98 mm of rainfall spread across 17 rainy days.
December, the wettest month, has a maximum daytime temperature of 11°C. The city receives 40 hours of sunshine in this period. During the driest month June you can expect a temperature of 17°C. For more detailed insights into the city’s temperatures, visit our Waterville Temperature page.
Annual Precipitation in Ireland
The map below shows the annual precipitation across Ireland. You can also select the different months in case you are interested in a specific month.





Amsterdam Precipitation Compared World Wide
Waterville’s average annual precipitation is 1550 mm. Let’s compare this to some popular worldwide tourist destinations:
The climate in San Francisco, USA, is influenced by coastal weather, with 469 mm of rainfall mostly during the winter months.
Beijing, China, receives 560 mm of annual precipitation, concentrated in the summer months.
Adelaide, Australia, enjoys 511 mm of annual precipitation, with dry summers and wet winters.
Mumbai, India, experiences a tropical monsoon climate with 1860 mm of annual rainfall, with the majority of precipitation happening during the monsoon season from June to September.
How is Precipitation Measured?
Precipitation amounts are measured using specific gauges installed at weather stations, collecting both rain and snow and any other type of precipitation. Rainfall is measured directly in millimeters, while that from snow and ice is obtained by melting it. Automated systems often incorporate heaters to make this easier.
Information from these stations is transmitted via Wi-Fi, satellite, GPS, or telephone connections to central monitoring networks. This information is immediately updated and integrated into weather models and forecasts.
Interesting weather facts
- "Ginger" was the longest-lasting Atlantic tropical storm, which spun around the open ocean for 28 days in 1971.
- The world's largest snowflake was recorded in the Guinness Book of Records, at 38 cm wide and 20 cm thick. The snowflake fell at Fort Keogh, Montana, USA, on 28 January 1887.
- The greatest snowfall recorded was on Mt. Rainier, Washington State, USA—over 31.5 meters fell during the winter of 1972.
For more detailed information about Waterville’s weather, including sunshine hours, humidity levels, and temperature data, visit our Waterville Climate page.