Alger Rainfall & Precipitation: Monthly Averages and Year-Round Insights

This page shows the average amount of rainfall per month in Alger. The numbers are calculated over a 30-year period to provide a reliable average. Now, let’s break down all the details for a clearer picture.

On average, Alger receives a reasonable amount of rainfall, with an annual precipitation of 635 mm.

Monthly Precipitation Levels

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

Significant seasonal changes in precipitation occur throughout the year. During the wet season, November receives substantial rainfall, averaging 95 mm of precipitation, recorded across 10 rainy days.

In contrast, the drier season, July brings less rainfall, with 1.5 mm over 2 rainy days.

November, the city’s wettest month, has a maximum daytime temperature of 21°C and receives 153 hours of sunshine. During the driest month July you can expect a temperature of 31°C. For more detailed insights into the city’s temperatures, visit our Alger Temperature page.

Annual Precipitation in Algeria

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

Amsterdam Precipitation Compared World Wide

Alger’s average annual precipitation is 635 mm. Let’s compare this to some popular worldwide tourist destinations:

In Barcelona, Spain, the average annual precipitation is 644 mm, evenly distributed across the year with no extreme wet or dry seasons.

Beijing, China, receives 560 mm of annual precipitation, concentrated in the summer months.

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

Bangkok, Thailand, experiences a tropical monsoon climate with 1668 mm of annual rainfall, with the heaviest precipitation occurring during September and October.

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.

Interesting weather facts

• Mawsynram in India is noted as being the wettest place on earth, with over 11 meters of rain falling every year.
• In contrast, Antofagasta in Chile is among the driest places on the planet, getting less than 0.1mm 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 Alger’s weather, including sunshine hours, humidity levels, and temperature data, visit our Alger Climate page.