Muscat Monthly Rainfall & Precipitation
This page shows both the average monthly rainfall and the number of rainy days in Muscat, Ad Dakhiliyah, Oman. 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.
Muscat has a dry climate with very low precipitation, averaging 89 mm (3.5 in) of rainfall annually.
Monthly Precipitation Levels
The average number of days each month with precipitation (> 0.2 mm (0.01 in))
Muscat can be quite wet during January, receiving approximately 18 mm (0.7 in) of precipitation over a single rainy day.
In contrast September, experiences much drier conditions, with 0.2 mm (0.01 in) of rainfall, spread across 0 rainy days.
January, the wettest month, has a maximum daytime temperature of 25°C (77°F). The city receives 269 hours of sunshine in this period. During the driest month September you can expect a temperature of 34°C (93°F). For more detailed insights into the city's temperatures, visit our Muscat Temperature page.
Explore Muscat's Historical Precipitation: 1976-2026
Browse day-by-day precipitation records for Muscat spanning 51 years. Select any month and year to see actual rainfall and snowfall recorded on each day.
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.
heavy rainfall
high
moderate
low
almost none
Muscat vs World: Rainfall Compared
Muscat's average annual precipitation is 89 mm (3.5 in). Let's compare this to some popular worldwide tourist destinations:
In Barcelona, Spain, the average annual precipitation is 620 mm (24 in), evenly distributed across the year with no extreme wet or dry seasons.
Meanwhile, Buenos Aires, Argentina, enjoys a humid subtropical climate with 1000 mm (39 in) of annual rainfall, mostly in the summer.
In Tokyo, Japan, the average annual precipitation is 1528 mm (60 in), with significant summer rains due to typhoon season.
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.
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 Muscat's weather, including sunshine hours, humidity levels, and temperature data, visit our Muscat Climate page.
