Straffan Rainfall & Precipitation: Monthly Averages and Year-Round Insights
This page shows both the average monthly rainfall and the number of rainy days in Straffan, Kildare County, Ireland. These values are calculated using 30 years of data (1990–2020) to ensure accuracy. Let's now guide you through the details for a complete overview.
Generally, Straffan has a moderate amount of precipitation, averaging 896 mm of rain/snowfall annually.
Monthly Precipitation Levels
The average number of days each month with precipitation (> 0.2 mm)
Year-round, Straffan has a balanced climate with minimal variation in precipitation. The difference between the wettest month, November, with 83 mm, and the driest month, March, with 63 mm, is minimal.
November, the wettest month, has a maximum daytime temperature of 11°C. The city receives 71 hours of sunshine in this period. During the driest month March you can expect a temperature of 11°C. For more detailed insights into the city’s temperatures, visit our Straffan 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
Straffan’s average annual precipitation is 896 mm. Let’s compare this to some popular worldwide tourist destinations:
Chicago, USA, sees an annual precipitation of 1062 mm, with rain and snow contributing to its humid climate.
Beijing, China, receives 560 mm of annual precipitation, concentrated in the summer months.
Melbourne, Australia, has 690 mm of rainfall annually, spread fairly evenly throughout the year.
Singapore, situated near the equator, gets 2581 mm of rainfall annually, with no distinct dry season and consistent monthly precipitation.
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 Straffan’s weather, including sunshine hours, humidity levels, and temperature data, visit our Straffan Climate page.