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Gros Islet Rainfall & Precipitation: Monthly Averages and Year-Round Insights

This page shows the average amount of rainfall per month in Gros Islet. The numbers are calculated over a 30-year period to provide a reliable average. Now, let’s break down all the details for a clearer picture.

Gros Islet is known for its substantial rainfall, with annual precipitation reaching 1064 mm.

Monthly Precipitation Levels

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

The seasons in Gros Islet, bring significant changes in precipitation. The wettest month, October, receives high rainfall, with an average of 149 mm of precipitation.

This rainfall is distributed across 18 rainy days. In contrast, the driest month, February, experiences much less rainfall, totaling 39 mm over 13 rainy days. These distinct seasonal differences provide diverse experiences throughout the year.

October, the wettest month, has a maximum daytime temperature of 30°C. The city receives 214 hours of sunshine in this period. During the driest month February you can expect a temperature of 28°C. For more detailed insights into the city’s temperatures, visit our Gros Islet Temperature page.

Annual Precipitation in Saint Lucia

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

Annual
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Annual average
precipitation: 1064 mm

More information

Legend heavy rainfall high moderate low almost none
Heavy annual rainfall has been defined as more than 1000 mm precipitation. High: 600 mm to 1000 mm. Moderate: 250 mm to 600 mm. Low: less than 250 mm.

Amsterdam Precipitation Compared World Wide

Gros Islet’s average annual precipitation is 1064 mm. Let’s compare this to some popular worldwide tourist destinations:

In Toronto, Canada, annual precipitation averages [964 mm], with snowy winters and rainy summers.

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.

Ho Chi Minh City, Vietnam, receives 1955 mm of annual rainfall, with a pronounced wet season from May to November, typical of its tropical monsoon climate.

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

  • "Ginger" was the longest-lasting Atlantic tropical storm, which spun around the open ocean for 28 days in 1971.
  • The world's largest snowflake was recorded in the Guinness Book of Records, at 38 cm wide and 20 cm thick. The snowflake fell at Fort Keogh, Montana, USA, on 28 January 1887.
  • The greatest snowfall recorded was on Mt. Rainier, Washington State, USA—over 31.5 meters fell during the winter of 1972.

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


Current rainfall in Gros Islet

Wed   Jan 22
30°C | 26°C
E 9 m/s
clear and no rain

clear and no rain

Thu   Jan 23
29°C | 26°C
E 8 m/s
4 mm
partly cloudy and rain

partly cloudy and rain

Fri   Jan 24
28°C | 25°C
E 9 m/s
7.5 mm
partly cloudy and rain

partly cloudy and rain

Interested in more climate information?

This site provides you with all the information you need about the climate in Gros Islet.

Our site offers climate and forecast data for every country in the world. Are you going to Saint Lucia? On this website you can find historical weather averages for many cities in Saint Lucia. Not sure yet where to go? We now have a tool which recommends destinations that suit your ideal travel conditions. Find out where to go with our weather planner.