Barra Cheia Monthly Rainfall & Precipitation

This page shows both the average monthly rainfall and the number of rainy days in Barra Cheia, Lisbon Region, Portugal. Long-term data from 1990 to 2020 was used to calculate these averages. Let's now guide you through the details for a complete overview.

Generally, Barra Cheia receives mid-range precipitation levels, with 558 mm (22 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))

The seasons in Barra Cheia, bring significant changes in precipitation. The wettest month, December, receives moderate rainfall, with an average of 79 mm (3.1 in) of precipitation. This rainfall is distributed across 14 rainy days.

In contrast, the driest month, July, experiences much less rainfall, totaling 3.2 mm (0.1 in) over 2 rainy days. These distinct seasonal differences provide diverse experiences throughout the year.

December, the wettest month, has a maximum daytime temperature of 17°C (63°F). The city receives 141 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 Barra Cheia Temperature page.

Barra Cheia's average annual precipitation is 558 mm (22 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.

In Shanghai, China, the annual average precipitation is 1347 mm (53 in), with a humid subtropical climate.

In Tokyo, Japan, the average annual precipitation is 1528 mm (60 in), with significant summer rains due to typhoon season.

Singapore, situated near the equator, gets 2581 mm (102 in) of rainfall annually, with no distinct dry season and consistent monthly precipitation.

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.

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

• 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.

• "Ginger" was the longest-lasting Atlantic tropical storm, which spun around the open ocean for 28 days in 1971.
• The world's largest snowflake was recorded in the Guinness Book of Records, at 38 cm (15 inches) wide and 20 cm (7.9 inches) thick. The snowflake fell at Fort Keogh, Montana, USA, on 28 January 1887.
• The greatest snowfall recorded was on Mt. Rainier, Washington State, USA, over 31.5 meters (103 feet) fell during the winter of 1972.

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