Karaj Rainfall & Precipitation: Monthly Averages and Year-Round Insights

This page shows the average amount of rainfall per month in Karaj. The numbers are calculated over a 30-year period to provide a reliable average. Let’s explore the details in depth to provide you with a complete overview.

Karaj has a relatively dry climate with low precipitation, averaging 365 mm of rain/snowfall annually.

Monthly Precipitation Levels

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

Karaj can be quite wet during March, receiving approximately 59 mm of precipitation over 12 rainy days.

In contrast August, experiences much drier conditions, with 4 mm of rainfall, spread across 2 rainy days.

March, the city’s wettest month, has a maximum daytime temperature of 11°C. During the driest month August you can expect a temperature of 33°C. For more detailed insights into the city’s temperatures, visit our Karaj Temperature page.

Annual Precipitation in Iran

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

Amsterdam Precipitation Compared World Wide

Karaj’s average annual precipitation is 365 mm. Let’s compare this to some popular worldwide tourist destinations:

The climate in San Francisco, USA, is influenced by coastal weather, with 469 mm of rainfall mostly during the winter months.

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

Adelaide, Australia, enjoys 511 mm of annual precipitation, with dry summers and wet winters.

Ho Chi Minh City, Vietnam, receives 1955 mm of annual rainfall, with a pronounced wet season from May to November, typical of its tropical monsoon climate.

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.

How Does Precipitation Affect Local Climate?

Precipitation has a very strong role in determining the local climate and ecosystem:

• 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.

For more detailed information about Karaj’s weather, including sunshine hours, humidity levels, and temperature data, visit our Karaj Climate page.