Culebra Monthly Rainfall & Precipitation
This page shows both the average monthly rainfall and the number of rainy days in Culebra, Puerto Rico. This average is based on long-term data collected between 1990 and 2020. Now, let's break down all the details for a clearer picture.
Culebra has a relatively rainy climate with high precipitation levels, averaging 1116 mm (44 in) of rainfall annually. Despite the high annual total, it does experience a distinct dry 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))
The climate in Culebra shows significant variation throughout the year. Expect 159 mm (6.3 in) of precipitation during the wettest month September, distributed over 18 rainy days.
In contrast, March offers drier and sunnier days, with around 38 mm (1.5 in) of rainfall over 15 rainy days.
September, the wettest month, has a maximum daytime temperature of 30°C (86°F). During the driest month March you can expect a temperature of 27°C (81°F). For more detailed insights into the city's temperatures, visit our Culebra Temperature page.
Daily Historical Precipitation
50-year average (1976-2025)
Average daily rainfall for each day of the month based on long-term records.
Average precipitation in June
Explore Culebra's Historical Precipitation: 1976-2026
Browse day-by-day precipitation records for Culebra spanning 51 years. Select any month and year to see actual rainfall and snowfall recorded on each day.
Annual Rainfall in Puerto Rico: City Comparison
The map below shows the annual precipitation across Puerto Rico. You can also select the different months in case you are interested in a specific month.
heavy rainfall
high
moderate
low
almost none
Culebra vs World: Rainfall Compared
Culebra's average annual precipitation is 1116 mm (44 in). Let's compare this to some popular worldwide tourist destinations:
The city of Rome, Italy, has an average annual precipitation of 832 mm (33 in), spread fairly evenly throughout the year.
Beijing, China, receives 560 mm (22 in) of annual precipitation, concentrated in the summer months.
Adelaide, Australia, enjoys 511 mm (20 in) of annual precipitation, with dry summers and wet winters.
Ho Chi Minh City, Vietnam, receives 1955 mm (77 in) of annual rainfall, with a pronounced wet season from May to November, typical of its tropical monsoon climate.
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.
Climate change is affecting precipitation patterns worldwide, including Culebra:
- 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.
- Mawsynram in India is noted as being the wettest place on earth, with over 11 meters (36 feet) of rain falling every year.
- In contrast, Antofagasta in Chile is among the driest places on the planet, getting less than 0.1mm (0.004 inches) per year, with some years recording virtually no rainfall.
- Nearly 1,650 thunderstorm cells are estimated over the planet at any given time.
For more detailed information about Culebra's weather, including sunshine hours, humidity levels, and temperature data, visit our Culebra Climate page.
