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

This page shows the average amount of rainfall per month in Garapan. The numbers are calculated over a 30-year period to provide a reliable average. Let’s explore the details in depth to provide you with a complete overview.

Garapan has a relatively rainy climate with high precipitation levels, averaging 1894 mm of rainfall annually.

Monthly Precipitation Levels

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

Significant seasonal changes in precipitation occur throughout the year. During the wet season, August receives substantial rainfall, averaging 352 mm of precipitation, recorded across 21 rainy days.

In contrast, the drier season, March brings less rainfall, with 50 mm over 20 rainy days.

August, the wettest month, has a maximum daytime temperature of 30°C. During the driest month March you can expect a temperature of 28°C. For more detailed insights into the city’s temperatures, visit our Garapan Temperature page.

Annual Precipitation in Northern Mariana Islands

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

Amsterdam Precipitation Compared World Wide

Garapan’s average annual precipitation is 1894 mm. Let’s compare this to some popular worldwide tourist destinations:

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

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

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

Bangkok, Thailand, experiences a tropical monsoon climate with 1668 mm of annual rainfall, with the heaviest precipitation occurring during September and October.

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.

How Does Precipitation Affect Local Climate?

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

• 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.

For more detailed information about Garapan’s weather, including sunshine hours, humidity levels, and temperature data, visit our Garapan Climate page.