Pori Monthly Rainfall & Precipitation
This page shows both the average monthly rainfall and the number of rainy days in Pori, Western Finland, Finland. These values are calculated using 30 years of data (1990–2020) to ensure accuracy. Now, let's break down all the details for a clearer picture.
Generally, Pori has a moderate amount of precipitation, averaging 713 mm (28 in) of rain/snowfall annually. However, it does experience a distinct dry season during certain months. Take a look at our detailed charts below to see the seasonal variation.
Monthly Precipitation Levels
The average number of days each month with precipitation (> 0.2 mm (0.01 in))
While rainfall varies throughout the year, each season offers its own charm. July brings wetter days averaging 81 mm (3.2 in) of precipitation, spread over 14 rainy days.
In contrast, March experiences a drier climate, with about 39 mm (1.5 in) of snow/rainfall spread across 14 snowy/rainy days.
July, the wettest month, has a maximum daytime temperature of 21°C (70°F). During the driest month March you can expect a temperature of 3°C (37°F). For more detailed insights into the city's temperatures, visit our Pori Temperature page.
Daily Historical Precipitation
50-year average (1976-2025)
Average daily rainfall for each day of the month based on long-term records.
Average precipitation in July
Explore Pori's Historical Precipitation: 1976-2026
Browse day-by-day precipitation records for Pori spanning 51 years. Select any month and year to see actual rainfall and snowfall recorded on each day.
Annual Rainfall in Finland: City Comparison
The map below shows the annual precipitation across Finland. You can also select the different months in case you are interested in a specific month.
heavy rainfall
high
moderate
low
almost none
Pori vs World: Rainfall Compared
Pori's average annual precipitation is 713 mm (28 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.
Beijing, China, receives 560 mm (22 in) of annual precipitation, concentrated in the summer months.
Perth, Australia, receives 565 mm (22 in) of rainfall annually, mostly during the winter months.
Bangkok, Thailand, experiences a tropical monsoon climate with 1668 mm (66 in) of annual rainfall, with the heaviest precipitation occurring during September and October.
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.
- Mawsynram in India is noted as being the wettest place on earth, with over 11 meters (36 feet) of rain falling every year.
- In contrast, Antofagasta in Chile is among the driest places on the planet, getting less than 0.1mm (0.004 inches) per year, with some years recording virtually no rainfall.
- Nearly 1,650 thunderstorm cells are estimated over the planet at any given time.
For more detailed information about Pori's weather, including sunshine hours, humidity levels, and temperature data, visit our Pori Climate page.
