Patras Monthly Rainfall & Precipitation
This page shows both the average monthly rainfall and the number of rainy days in Patras, Greece. The figures are based on a 30-year period (1990–2020) to provide a reliable average. Let's explore the details to provide you with a complete overview.
Generally, Patras receives mid-range precipitation levels, with 944 mm (37 in) annually. The distribution varies significantly throughout the year, with a distinct dry season during certain months, as shown in our charts below.
Monthly Precipitation Levels
The average number of days each month with precipitation (> 0.2 mm (0.01 in))
Significant seasonal changes in precipitation occur throughout the year. During the wettest month, December receives substantial rainfall, averaging 134 mm (5.3 in) of precipitation, recorded across 13 rainy days.
In contrast, the driest month, July brings less rainfall, with 15 mm (0.6 in) over 3 rainy days.
December, the wettest month, has a maximum daytime temperature of 14°C (57°F). The city receives 108 hours of sunshine in this period. During the driest month July you can expect a temperature of 31°C (88°F). For more detailed insights into the city's temperatures, visit our Patras Temperature page.
Annual Rainfall in Greece: City Comparison
The map below shows the annual precipitation across Greece. You can also select the different months in case you are interested in a specific month.
heavy rainfall
high
moderate
low
almost none
Patras vs World: Rainfall Compared
Patras's average annual precipitation is 944 mm (37 in). Let's compare this to some popular worldwide tourist destinations:
In Barcelona, Spain, the average annual precipitation is 644 mm (25 in), evenly distributed across the year with no extreme wet or dry seasons.
Osaka, Japan, experiences 1507 mm (59 in) of rainfall annually, spread across the year with wetter summers.
In Brisbane, Australia, the annual precipitation is 979 mm (39 in), making it wetter than Sydney.
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.
The proximity of a location to a large body of water can significantly affect its rainfall patterns:
- Ocean Influence: Coastal regions typically receive more rainfall due to the presence of moisture-laden winds from the ocean. These regions tend to have more humid climates and experience more frequent precipitation, especially in winter.
- Continental Climates: Areas further from the sea, such as inland or continental regions, experience less frequent rainfall and more extreme seasonal variations in precipitation.
- 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 Patras's weather, including sunshine hours, humidity levels, and temperature data, visit our Patras Climate page.
