Isfahan Monthly Rainfall & Precipitation

This page shows both the average monthly rainfall and the number of rainy days in Isfahan, Iran. The numbers reflect climate data gathered over a 30-year period, from 1990 to 2020. Now, let's break down all the details for a clearer picture.

Isfahan experiences desert-like conditions in terms of precipitation with almost no rain/snowfall, 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 Isfahan, bring significant changes in precipitation. The wettest month, March, receives low rainfall, with an average of 18 mm (0.7 in) of precipitation. This rainfall is distributed across 7 rainy days.

In contrast, the driest month, August, experiences much less rainfall, totaling 0.1 mm (0 in) over a single rainy day. These distinct seasonal differences provide diverse experiences throughout the year.

March, the wettest month, has a maximum daytime temperature of 19°C (66°F). The city receives 245 hours of sunshine in this period. During the driest month August you can expect a temperature of 37°C (99°F). For more detailed insights into the city's temperatures, visit our Isfahan Temperature page.

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

Boston, USA, experiences 1238 mm (49 in) of annual precipitation, including significant snowfall during the winter.

In Seoul, South Korea, the average annual precipitation is 1237 mm (49 in), with most rain falling during the summer monsoon season.

Melbourne, Australia, has 690 mm (27 in) of rainfall annually, spread fairly evenly throughout the year.

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 Isfahan:

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