Tanna Island Monthly Rainfall & Precipitation

This page shows both the average monthly rainfall and the number of rainy days in Tanna Island, Tanna Island, Vanuatu. This average is based on long-term data collected between 1990 and 2020. Let's explore the details to provide you with a complete overview.

Tanna Island experiences significant rainfall throughout the year, averaging 1785 mm (70 in) of precipitation annually. However, this abundant rainfall is not evenly distributed, with a distinct rainy season during certain months. You can clearly see this in our monthly precipitation graphs below.

Monthly Precipitation Levels

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

The climate in Tanna Island shows significant variation throughout the year. Expect 249 mm (9.8 in) of precipitation during the wettest month March, distributed over 22 rainy days.

In contrast, August offers drier and sunnier days, with around 83 mm (3.3 in) of rainfall over 17 rainy days.

March, the wettest month, has a maximum daytime temperature of 29°C (84°F). During the driest month August you can expect a temperature of 25°C (77°F). For more detailed insights into the city's temperatures, visit our Tanna Island Temperature page.

Tanna Island's average annual precipitation is 1785 mm (70 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.

Beijing, China, receives 560 mm (22 in) of annual precipitation, concentrated in the summer months.

In Tokyo, Japan, the average annual precipitation is 1528 mm (60 in), with significant summer rains due to typhoon season.

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 Tanna Island's weather, including sunshine hours, humidity levels, and temperature data, visit our Tanna Island Climate page.