Bengaluru Monthly Rainfall & Precipitation
This page shows both the average monthly rainfall and the number of rainy days in Bengaluru, Karnataka, India. These values are calculated using 30 years of data (1990–2020) to ensure accuracy. Now, let's explore all the details to give you a full picture.
On average, Bengaluru receives a reasonable amount of rainfall, with an annual precipitation of 959 mm (38 in). Despite this overall moderate level, the city experiences distinct dry season during certain months throughout the year, as illustrated in the precipitation charts 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 147 mm (5.8 in) of precipitation, recorded across 7 rainy days.
In contrast, the driest month, January brings less rainfall, with 4.7 mm (0.2 in) over 0 rainy days.
October, the wettest month, has a maximum daytime temperature of 29°C (84°F). The city receives 175 hours of sunshine in this period. During the driest month January you can expect a temperature of 29°C (84°F). For more detailed insights into the city's temperatures, visit our Bengaluru 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 July
Explore Bengaluru's Historical Precipitation: 1976-2026
Browse day-by-day precipitation records for Bengaluru spanning 51 years. Select any month and year to see actual rainfall and snowfall recorded on each day.
Annual Rainfall in India: City Comparison
The map below shows the annual precipitation across India. You can also select the different months in case you are interested in a specific month.
heavy rainfall
high
moderate
low
almost none
Bengaluru vs World: Rainfall Compared
Bengaluru's average annual precipitation is 959 mm (38 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.
Meanwhile, Buenos Aires, Argentina, enjoys a humid subtropical climate with 1000 mm (39 in) of annual rainfall, mostly in the summer.
Perth, Australia, receives 565 mm (22 in) of rainfall annually, mostly during the winter months.
Singapore, situated near the equator, gets 2581 mm (102 in) of rainfall annually, with no distinct dry season and consistent monthly precipitation.
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 Bengaluru:
- 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.
- 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 Bengaluru's weather, including sunshine hours, humidity levels, and temperature data, visit our Bengaluru Climate page.
