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Aljustrel Monthly Rainfall & Precipitation

This page shows both the average monthly rainfall and the number of rainy days in Aljustrel, Alentejo, Portugal. The numbers reflect climate data gathered over a 30-year period, from 1990 to 2020. Now, let's explore all the details to give you a full picture.

Aljustrel's climate is marked by below-average rainfall, accumulating 469 mm (18 in) of precipitation yearly. The distribution includes a distinct dry season during certain months as shown in the precipitation charts below.

Monthly Precipitation Levels

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

The climate in Aljustrel shows significant variation throughout the year. Expect 64 mm (2.5 in) of precipitation during the wettest month October, distributed over 9 rainy days.

In contrast, July offers drier and sunnier days, with around 2 mm (0.1 in) of rainfall over a single rainy day.

October, the wettest month, has a maximum daytime temperature of 25°C (77°F). The city receives 206 hours of sunshine in this period. During the driest month July you can expect a temperature of 33°C (91°F). For more detailed insights into the city's temperatures, visit our Aljustrel 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.

Annual
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Legend heavy rainfall high moderate low almost none
Heavy annual rainfall has been defined as more than 1000 mm (39 in) precipitation. High: 600 mm (24 in) to 1000 mm (39 in). Moderate: 250 mm (9.8 in) to 600 mm (24 in). Low: less than 250 mm (9.8 in).

Aljustrel vs World: Rainfall Compared

Aljustrel's average annual precipitation is 469 mm (18 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 Shanghai, China, the annual average precipitation is 1347 mm (53 in), with a humid subtropical climate.

Adelaide, Australia, enjoys 511 mm (20 in) of annual precipitation, with dry summers and wet winters.

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.

How is Precipitation Measured?

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.
  • Interesting weather facts

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


    Current rainfall in Aljustrel

    More climate data for Aljustrel