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

This page shows both the average monthly rainfall and the number of rainy days in Koolbaai, Sint Maarten. These values are calculated using 30 years of data (1990–2020) to ensure accuracy. Let’s explore the details to provide you with a complete overview.

Generally, Koolbaai has a moderate amount of precipitation, averaging 917 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, October receives substantial rainfall, averaging 139 mm of precipitation, recorded across 20 rainy days.

In contrast, the drier season, March brings less rainfall, with 32 mm over 13 rainy days.

October, the wettest month, has a maximum daytime temperature of 29°C. The city receives 244 hours of sunshine in this period. During the driest month March you can expect a temperature of 27°C. For more detailed insights into the city’s temperatures, visit our Koolbaai Temperature page.

Annual Precipitation in Sint Maarten

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

Amsterdam Precipitation Compared World Wide

Koolbaai’s average annual precipitation is 917 mm. Let’s compare this to some popular worldwide tourist destinations:

In Barcelona, Spain, the average annual precipitation is 620 mm, evenly distributed across the year with no extreme wet or dry seasons.

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

In Brisbane, Australia, the annual precipitation is 979 mm, making it wetter than Sydney.

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.

Global Warming and Precipitation

Climate change is affecting precipitation patterns worldwide, including Koolbaai:

• 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.

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