Norfolk (VA) Rainfall & Precipitation: Monthly Averages and Year-Round Insights

This page shows the average amount of rainfall per month in Norfolk (VA). The numbers are calculated over a 30-year period to provide a reliable average. Now, let’s explore all the details to give you a full picture.

Norfolk is known for its substantial rain/snowfall, with annual precipitation reaching 1341 mm.

Monthly Precipitation Levels

The average number of days each month with precipitation (> 0.2 mm)

Norfolk can be quite wet during September, receiving approximately 170 mm of precipitation over 10 rainy days.

In contrast February, experiences much drier conditions, with 69 mm of rainfall, spread across 9 rainy days.

September, the city’s wettest month, has a maximum daytime temperature of 28°C and receives 230 hours of sunshine. During the driest month February you can expect a temperature of 11°C. For more detailed insights into the city’s temperatures, visit our Norfolk Temperature page.

Annual Precipitation in the United States of America

The map below shows the annual precipitation across the United States of America. You can also select the different months in case you are interested in a specific month.

Amsterdam Precipitation Compared World Wide

Norfolk’s average annual precipitation is 1341 mm. Let’s compare this to some popular worldwide tourist destinations:

In Lisbon, Portugal, the average annual precipitation is 774 mm, characterized by wet winters and dry summers typical of the Mediterranean climate.

Meanwhile, Buenos Aires, Argentina, enjoys a humid subtropical climate with 1000 mm of annual rainfall, mostly in the summer.

Perth, Australia, receives 565 mm of rainfall annually, mostly during the winter months.

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

• The U.S. has a significant number of thunderstorms every year, with over 14.6 million taking place across the world annually.
• Approximately 70% of lightning bolts strike land rather than oceans.
• A storm named John was the longest-lasting Pacific tropical storm, continuing for 31 days. As it crossed the dateline twice, it changed status from a hurricane to a typhoon and back to a hurricane.

For more detailed information about Norfolk (VA)’s weather, including sunshine hours, humidity levels, and temperature data, visit our Norfolk (VA) Climate page.