St Peter Port Monthly Rainfall & Precipitation

This page shows both the average monthly rainfall and the number of rainy days in St Peter Port, Guernsey, United Kingdom. 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, St Peter Port has a moderate amount of precipitation, averaging 962 mm (38 in) of rainfall annually.

Monthly Precipitation Levels

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

The climate in St Peter Port shows significant variation throughout the year. Expect 131 mm (5.2 in) of precipitation during the wettest month November, distributed over 18 rainy days.

In contrast, July offers drier and sunnier days, with around 41 mm (1.6 in) of rainfall over 10 rainy days.

November, the wettest month, has a maximum daytime temperature of 14°C (57°F). The city receives 82 hours of sunshine in this period. During the driest month July you can expect a temperature of 18°C (64°F). For more detailed insights into the city's temperatures, visit our St Peter Port Temperature page.

St Peter Port's average annual precipitation is 962 mm (38 in). Let's compare this to some popular worldwide tourist destinations:

In Toronto, Canada, annual precipitation averages 964 mm (38 in), with snowy winters and rainy summers.

Osaka, Japan, experiences 1507 mm (59 in) of rainfall annually, spread across the year with wetter summers.

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

Ho Chi Minh City, Vietnam, receives 1955 mm (77 in) of annual rainfall, with a pronounced wet season from May to November, typical of its tropical monsoon climate.

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.

Climate change is affecting precipitation patterns worldwide, including St Peter Port:

• 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 St Peter Port's weather, including sunshine hours, humidity levels, and temperature data, visit our St Peter Port Climate page.