Arouca Monthly Rainfall & Precipitation

This page shows both the average monthly rainfall and the number of rainy days in Arouca, Norte Region, Portugal. 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.

Arouca has a notably wet climate with abundant precipitation, recording 1573 mm (62 in) of rainfall per year. It does, however, have a distinct dry and rainy season during certain months. Have a look at our detailed charts below to see how precipitation varies throughout the year.

Monthly Precipitation Levels

The average number of days each month with precipitation (> 0.2 mm (0.01 in))

The seasons in Arouca, bring significant changes in precipitation. The wettest month, October, receives heavy rainfall, with an average of 202 mm (8 in) of precipitation. This rainfall is distributed across 14 rainy days.

In contrast, the driest month, July, experiences much less rainfall, totaling 31 mm (1.2 in) over 7 rainy days. These distinct seasonal differences provide diverse experiences throughout the year.

October, the wettest month, has a maximum daytime temperature of 20°C (68°F). The city receives 182 hours of sunshine in this period. During the driest month July you can expect a temperature of 27°C (81°F). For more detailed insights into the city's temperatures, visit our Arouca Temperature page.

Annual Rainfall in Portugal: City Comparison

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

Arouca vs World: Rainfall Compared

Arouca's average annual precipitation is 1573 mm (62 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.

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.

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