Batticaloa Monthly Rainfall & Precipitation
This page shows both the average monthly rainfall and the number of rainy days in Batticaloa, Batticaloa District, Sri Lanka. These averages rely on historical data collected over 30 years, from 1990 to 2020. Let's now guide you through the details for a complete overview.
Batticaloa has a notably wet climate with abundant precipitation, recording 1426 mm (56 in) of rainfall per year. It does, however, have a distinct dry and rainy season during certain months. Have a look at our detailed charts below to see how precipitation varies throughout the year.
Monthly Precipitation Levels
The average number of days each month with precipitation (> 0.2 mm (0.01 in))
Batticaloa can be quite wet during December, receiving approximately 307 mm (12 in) of precipitation over 14 rainy days.
In contrast July, experiences much drier conditions, with 30 mm (1.2 in) of rainfall, spread across 7 rainy days.
December, the wettest month, has a maximum daytime temperature of 29°C (84°F). The city receives 171 hours of sunshine in this period. During the driest month July you can expect a temperature of 34°C (93°F). For more detailed insights into the city's temperatures, visit our Batticaloa Temperature page.
Annual Rainfall in Sri Lanka: City Comparison
The map below shows the annual precipitation across Sri Lanka. You can also select the different months in case you are interested in a specific month.
heavy rainfall
high
moderate
low
almost none
Batticaloa vs World: Rainfall Compared
Batticaloa's average annual precipitation is 1426 mm (56 in). Let's compare this to some popular worldwide tourist destinations:
In Toronto, Canada, annual precipitation averages 964 mm (38 in), with snowy winters and rainy summers.
In Seoul, South Korea, the average annual precipitation is 1237 mm (49 in), with most rain falling during the summer monsoon season.
Perth, Australia, receives 565 mm (22 in) of rainfall annually, mostly during the winter months.
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.
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.
- 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 Batticaloa's weather, including sunshine hours, humidity levels, and temperature data, visit our Batticaloa Climate page.
