Rocky Harbour (NL) Monthly Rainfall & Precipitation

This page shows both the average monthly rainfall and the number of rainy days in Rocky Harbour, Newfoundland and Labrador, 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.

Rocky Harbour is known for its substantial rain/snowfall, with annual precipitation reaching 1560 mm (61 in).

Monthly Precipitation Levels

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

The wettest period in Rocky Harbour occurs in September, which receives around 155 mm (6.1 in) of precipitation. During the driest month, May, Rocky Harbour experiences high rainfall, totaling approximately 104 mm (4.1 in). The consistent precipitation levels throughout the year contribute to a relatively stable climate.

September, the wettest month, has a maximum daytime temperature of 16°C (61°F). During the driest month May you can expect a temperature of 10°C (50°F). For more detailed insights into the city's temperatures, visit our Rocky Harbour Temperature page.

Rocky Harbour's average annual precipitation is 1560 mm (61 in). Let's compare this to some popular worldwide tourist destinations:

In Lisbon, Portugal, the average annual precipitation is 774 mm (30 in), characterized by wet winters and dry summers typical of the Mediterranean climate.

Meanwhile, Buenos Aires, Argentina, enjoys a humid subtropical climate with 1000 mm (39 in) of annual rainfall, mostly in the summer.

Adelaide, Australia, enjoys 511 mm (20 in) of annual precipitation, with dry summers and wet winters.

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.

Precipitation has a very strong role in determining the local climate and ecosystem:

• Changing Rainfall Patterns: Global warming causes drastic changes in the patterns of rainfall. Some areas have been experiencing increased frequency and intensity of rainfall, while other areas experience longer dry spells or even droughts.
• Local Impacts: Many regions are experiencing heavier rainfall in the winter months and drier, hotter summers. This affects agriculture, water resources, and ecosystems.

• 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 Rocky Harbour (NL)'s weather, including sunshine hours, humidity levels, and temperature data, visit our Rocky Harbour (NL) Climate page.