Honiara Rainfall & Precipitation: Monthly Averages and Year-Round Insights

This page shows the average amount of rainfall per month in Honiara. The numbers are calculated over a 30-year period to provide a reliable average. Let's now guide you through the details for a complete overview.

Honiara has a relatively rainy climate with high precipitation levels, averaging 3421 mm of rainfall annually.

Monthly Precipitation Levels

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

Honiara offers a pleasant mix of wetter and slightly drier months. The difference in precipitation between February (394 mm) and June (195 mm) is not too significant, making the climate enjoyable for visitors and residents alike.

February, the wettest month, has a maximum daytime temperature of 29°C. The city receives 154 hours of sunshine in this period. During the driest month June you can expect a temperature of 28°C. For more detailed insights into the city’s temperatures, visit our Honiara Temperature page.

Annual Precipitation in Solomon Islands

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

Amsterdam Precipitation Compared World Wide

Honiara’s average annual precipitation is 3421 mm. Let’s compare this to some popular worldwide tourist destinations:

Boston, USA, experiences 1238 mm of annual precipitation, including significant snowfall during the winter.

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

Perth, Australia, receives 565 mm of rainfall annually, mostly during the winter months.

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

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.

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 Honiara’s weather, including sunshine hours, humidity levels, and temperature data, visit our Honiara Climate page.