New Westminster (BC) Monthly Rainfall & Precipitation

This page shows both the average monthly rainfall and the number of rainy days in New Westminster, British Columbia, Canada. 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.

New Westminster is known for its substantial rain/snowfall, with annual precipitation reaching 2319 mm (91 in). While the overall climate is wet, there are notable seasonal patterns that create interesting contrasts, as demonstrated in our graph below.

Monthly Precipitation Levels

The average number of days each month with precipitation (> 0.2 mm (0.01 in))

The climate in New Westminster shows significant variation throughout the year. Expect 343 mm (14 in) of precipitation during the wettest month November, distributed over 20 rainy days.

In contrast, July offers drier and sunnier days, with around 55 mm (2.2 in) of rainfall over 7 rainy days.

November, the wettest month, has a maximum daytime temperature of 9°C (48°F). The city receives 60 hours of sunshine in this period. During the driest month July you can expect a temperature of 23°C (73°F). For more detailed insights into the city's temperatures, visit our New Westminster Temperature page.

New Westminster's average annual precipitation is 2319 mm (91 in). Let's compare this to some popular worldwide tourist destinations:

Chicago, USA, sees an annual precipitation of 1062 mm (42 in), with rain and snow contributing to its humid climate.

In Seoul, South Korea, the average annual precipitation is 1237 mm (49 in), with most rain falling during the summer monsoon season.

In Brisbane, Australia, the annual precipitation is 979 mm (39 in), making it wetter than Sydney.

Kuala Lumpur, Malaysia, receives 2529 mm (100 in) of annual rainfall, characteristic of its equatorial tropical rainforest climate, with consistent rainfall throughout the year and peak months during March and November.

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.

The proximity of a location to a large body of water can significantly affect its rainfall patterns:

• Ocean Influence: Coastal regions typically receive more rainfall due to the presence of moisture-laden winds from the ocean. These regions tend to have more humid climates and experience more frequent precipitation, especially in winter.
• Continental Climates: Areas further from the sea, such as inland or continental regions, experience less frequent rainfall and more extreme seasonal variations in precipitation.

• 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 New Westminster (BC)'s weather, including sunshine hours, humidity levels, and temperature data, visit our New Westminster (BC) Climate page.