Ilhéus Monthly Rainfall & Precipitation
This page shows both the average monthly rainfall and the number of rainy days in Ilhéus, Bahia, Brazil. Long-term data from 1990 to 2020 was used to calculate these averages. Now, let's explore all the details to give you a full picture.
Ilhéus experiences significant rainfall throughout the year, averaging 1315 mm (52 in) of precipitation annually.
Monthly Precipitation Levels
The average number of days each month with precipitation (> 0.2 mm (0.01 in))
Ilhéus experiences moderate seasonal variation in rainfall, with monthly averages ranging from 142 mm (5.6 in) in November, the wettest month, and 73 mm (2.9 in) in September, the driest month.
November, the wettest month, has a maximum daytime temperature of 28°C (82°F). The city receives 192 hours of sunshine in this period. During the driest month September you can expect a temperature of 27°C (81°F). For more detailed insights into the city's temperatures, visit our Ilhéus Temperature page.
Annual Rainfall in Brazil: City Comparison
The map below shows the annual precipitation across Brazil. You can also select the different months in case you are interested in a specific month.
heavy rainfall
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Ilhéus vs World: Rainfall Compared
Ilhéus's average annual precipitation is 1315 mm (52 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.
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.
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.
- "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 Ilhéus's weather, including sunshine hours, humidity levels, and temperature data, visit our Ilhéus Climate page.
