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

This page shows the average amount of rainfall per month in Altona. The numbers are calculated over a 30-year period to provide a reliable average. Now, let’s explore all the details to give you a full picture.

Altona has a notably wet climate with abundant precipitation, recording 1006 mm of rainfall per year.

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, September receives substantial rainfall, averaging 148 mm of precipitation, recorded across 18 rainy days.

In contrast, the drier season, March brings less rainfall, with 33 mm over 14 rainy days.

September, the wettest month, has a maximum daytime temperature of 30°C. During the driest month March you can expect a temperature of 27°C. For more detailed insights into the city’s temperatures, visit our Altona Temperature page.

Annual Precipitation in US Virgin Islands

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

Annual
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Annual average
precipitation: 1006 mm

More information

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

Amsterdam Precipitation Compared World Wide

Altona’s average annual precipitation is 1006 mm. Let’s compare this to some popular worldwide tourist destinations:

The climate in San Francisco, USA, is influenced by coastal weather, with 469 mm of rainfall mostly during the winter months.

Meanwhile, Buenos Aires, Argentina, enjoys a humid subtropical climate with 1000 mm of annual rainfall, mostly in the summer.

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

Kuala Lumpur, Malaysia, receives 2529 mm 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.

How Does Precipitation Affect Local Climate?

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

  • 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.

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


Current rainfall in Altona

Friday
14 Feb
Fair
Fair
26°C
0.5 mm
Saturday
15 Feb
Light rain showers
Light rain showers
26°C
0.6 mm
Sunday
16 Feb
Fair
Fair
26°C
0 mm

Interested in more climate information?

This site provides you with all the information you need about the climate in Altona.

Our site offers climate and forecast data for every country in the world. Are you going to US Virgin Islands? On this website you can find historical weather averages for many cities in US Virgin Islands. Not sure yet where to go? We now have a tool which recommends destinations that suit your ideal travel conditions. Find out where to go with our weather planner.