Boca Barranca Monthly Rainfall & Precipitation
This page shows both the average monthly rainfall and the number of rainy days in Boca Barranca, Costa Rica. The numbers reflect climate data gathered over a 30-year period, from 1990 to 2020. Let's explore the details to provide you with a complete overview.
Boca Barranca is known for its substantial rainfall, with annual precipitation reaching 3152 mm (124 in). While the overall climate is wet, there are notable seasonal patterns that create interesting contrasts, as demonstrated in our graph below.
Monthly Precipitation Levels
The average number of days each month with precipitation (> 0.2 mm (0.01 in))
Significant seasonal changes in precipitation occur throughout the year. During the wettest month, October receives substantial rainfall, averaging 489 mm (19 in) of precipitation, recorded across 21 rainy days.
In contrast, the driest month, February brings less rainfall, with 20 mm (0.8 in) over 7 rainy days.
October, the wettest month, has a maximum daytime temperature of 28°C (82°F). The city receives 167 hours of sunshine in this period. During the driest month February you can expect a temperature of 32°C (90°F). For more detailed insights into the city's temperatures, visit our Boca Barranca 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
Boca Barranca vs World: Rainfall Compared
Boca Barranca's average annual precipitation is 3152 mm (124 in). Let's compare this to some popular worldwide tourist destinations:
Athens, Greece, receives an average annual precipitation of 400 mm (16 in), making it one of the drier Mediterranean climates with rainfall mostly in winter.
Osaka, Japan, experiences 1507 mm (59 in) of rainfall annually, spread across the year with wetter summers.
In Tokyo, Japan, the average annual precipitation is 1528 mm (60 in), with significant summer rains due to typhoon season.
Bangkok, Thailand, experiences a tropical monsoon climate with 1668 mm (66 in) of annual rainfall, with the heaviest precipitation occurring during September and October.
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.
Precipitation has a very strong role in determining the local climate and ecosystem:
- 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.
- "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 (15 inches) wide and 20 cm (7.9 inches) 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 (103 feet) fell during the winter of 1972.
For more detailed information about Boca Barranca's weather, including sunshine hours, humidity levels, and temperature data, visit our Boca Barranca Climate page.
