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Sibu Monthly Rainfall & Precipitation

This page shows both the average monthly rainfall and the number of rainy days in Sibu, Sarawak, Malaysia. These averages rely on historical data collected over 30 years, from 1990 to 2020. Now, let's break down all the details for a clearer picture.

Sibu experiences significant rainfall throughout the year, averaging 3095 mm (122 in) of precipitation annually.

Monthly Precipitation Levels

The average number of days each month with precipitation (> 0.2 mm (0.01 in))

Sibu offers a pleasant mix of wetter and slightly drier months. The difference in precipitation between December (353 mm (14 in)) and July (185 mm (7.3 in)) is not too significant, making the climate enjoyable for visitors and residents alike.

December, the wettest month, has a maximum daytime temperature of 31°C (88°F). The city receives 151 hours of sunshine in this period. During the driest month July you can expect a temperature of 33°C (91°F). For more detailed insights into the city's temperatures, visit our Sibu 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 Sibu's Historical Precipitation: 1976-2026

Browse day-by-day precipitation records for Sibu spanning 51 years. Select any month and year to see actual rainfall and snowfall recorded on each day.

Annual Rainfall in Malaysia: City Comparison

The map below shows the annual precipitation across Malaysia. You can also select the different months in case you are interested in a specific month.

Annual
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Legend heavy rainfall high moderate low almost none
Heavy annual rainfall has been defined as more than 1000 mm (39 in) precipitation. High: 600 mm (24 in) to 1000 mm (39 in). Moderate: 250 mm (9.8 in) to 600 mm (24 in). Low: less than 250 mm (9.8 in).

Sibu vs World: Rainfall Compared

Sibu's average annual precipitation is 3095 mm (122 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.

Beijing, China, receives 560 mm (22 in) of annual precipitation, concentrated in the summer months.

In Brisbane, Australia, the annual precipitation is 979 mm (39 in), making it wetter than Sydney.

Kuala Lumpur, Malaysia, receives 2529 mm (100 in) of annual rainfall, characteristic of its equatorial tropical rainforest climate, with consistent rainfall throughout the year and peak months during March and November.

How is Precipitation Measured?

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.

  • Rainy Seasons: Many parts of the world have well-defined wet seasons where precipitation is distinctly higher. These are normally accompanied by lush vegetation and temperature patterns.
  • Dry Seasons: In areas where the climate is either desert or Mediterranean, the amount of precipitation is drastically reduced, leading to a shortage of water and arid conditions.
  • Interesting weather facts

    • "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 Sibu's weather, including sunshine hours, humidity levels, and temperature data, visit our Sibu Climate page.


    Current rainfall in Sibu

    More climate data for Sibu