Nizwa Monthly Rainfall & Precipitation

This page shows both the average monthly rainfall and the number of rainy days in Nizwa, Ad Dakhiliyah, Oman. These averages rely on historical data collected over 30 years, from 1990 to 2020. Now, let's explore all the details to give you a full picture.

Nizwa experiences desert-like conditions in terms of precipitation with almost no rainfall, generally receiving 110 mm (4.3 in) annually.

Monthly Precipitation Levels

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

The seasons in Nizwa, bring significant changes in precipitation. The wettest month, March, receives low rainfall, with an average of 20 mm (0.8 in) of precipitation. This rainfall is distributed across 2 rainy days.

March, the wettest month, has a maximum daytime temperature of 31°C (88°F). During the driest month September you can expect a temperature of 38°C (100°F). For more detailed insights into the city's temperatures, visit our Nizwa Temperature page.

Annual Rainfall in Oman: City Comparison

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

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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).

Nizwa vs World: Rainfall Compared

Nizwa's average annual precipitation is 110 mm (4.3 in). Let's compare this to some popular worldwide tourist destinations:

Seville, Spain, experiences 541 mm (21 in) of rainfall annually, with wet winters and dry summers typical of southern Spain.

Osaka, Japan, experiences 1507 mm (59 in) of rainfall annually, spread across the year with wetter summers.

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.

Climate change is affecting precipitation patterns worldwide, including Nizwa:

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