Barú Monthly Rainfall & Precipitation
This page shows both the average monthly rainfall and the number of rainy days in Barú, Puntarenas, Costa Rica. This average is based on long-term data collected between 1990 and 2020. Let's now guide you through the details for a complete overview.
Barú is known for its substantial rainfall, with annual precipitation reaching 7293 mm (287 in).
Monthly Precipitation Levels
The average number of days each month with precipitation (> 0.2 mm (0.01 in))
Barú can be quite wet during October, receiving approximately 948 mm (37 in) of precipitation over 22 rainy days.
In contrast March, experiences much drier conditions, with 144 mm (5.7 in) of rainfall, spread across 8 rainy days.
October, the wettest month, has a maximum daytime temperature of 26°C (79°F). The city receives 155 hours of sunshine in this period. 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 Barú Temperature page.
Annual Rainfall in Costa Rica: City Comparison
The map below shows the annual precipitation across Costa Rica. You can also select the different months in case you are interested in a specific month.
heavy rainfall
high
moderate
low
almost none
Barú vs World: Rainfall Compared
Barú's average annual precipitation is 7293 mm (287 in). Let's compare this to some popular worldwide tourist destinations:
Chicago, USA, sees an annual precipitation of 1062 mm (42 in), with rain and snow contributing to its humid climate.
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.
The proximity of a location to a large body of water can significantly affect its rainfall patterns:
- Ocean Influence: Coastal regions typically receive more rainfall due to the presence of moisture-laden winds from the ocean. These regions tend to have more humid climates and experience more frequent precipitation, especially in winter.
- Continental Climates: Areas further from the sea, such as inland or continental regions, experience less frequent rainfall and more extreme seasonal variations in precipitation.
- 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 Barú's weather, including sunshine hours, humidity levels, and temperature data, visit our Barú Climate page.
