Ha‘avakatolo Monthly Rainfall & Precipitation

This page shows both the average monthly rainfall and the number of rainy days in Ha‘avakatolo, Tongatapu Island, Tonga. 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.

Ha‘avakatolo has a relatively rainy climate with high precipitation levels, averaging 1757 mm (69 in) of rainfall annually. Despite the high annual total, it does experience a distinct rainy season during certain months. Examine our detailed charts below to understand these seasonal patterns.

Monthly Precipitation Levels

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

Significant seasonal changes in precipitation occur throughout the year. During the wettest month, March receives substantial rainfall, averaging 241 mm (9.5 in) of precipitation, recorded across 19 rainy days.

In contrast, the driest month, October brings less rainfall, with 101 mm (4 in) over 14 rainy days.

March, the wettest month, has a maximum daytime temperature of 28°C (82°F). During the driest month October you can expect a temperature of 25°C (77°F). For more detailed insights into the city's temperatures, visit our Ha‘avakatolo Temperature page.

Annual Rainfall in Tonga: City Comparison

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

Annual

Annual

Map not visible? Whoops sorry! Please refresh the page.

Legend

heavy rainfall

high

moderate

low

almost none

Heavy annual rainfall has been defined as more than 1000 mm (39 in) precipitation. High: 600 mm (24 in) to 1000 mm (39 in). Moderate: 250 mm (9.8 in) to 600 mm (24 in). Low: less than 250 mm (9.8 in).

Ha‘avakatolo vs World: Rainfall Compared

Ha‘avakatolo's average annual precipitation is 1757 mm (69 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.

Perth, Australia, receives 565 mm (22 in) of rainfall annually, mostly during the winter months.

Singapore, situated near the equator, gets 2581 mm (102 in) of rainfall annually, with no distinct dry season and consistent monthly precipitation.

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.

Rainy Seasons: Many parts of the world have well-defined wet seasons where precipitation is distinctly higher. These are normally accompanied by lush vegetation and temperature patterns.

Dry Seasons: In areas where the climate is either desert or Mediterranean, the amount of precipitation is drastically reduced, leading to a shortage of water and arid conditions.

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 Ha‘avakatolo's weather, including sunshine hours, humidity levels, and temperature data, visit our Ha‘avakatolo Climate page.

Current rainfall in Ha‘avakatolo

10-Day Forecast