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

This page shows the average amount of rainfall per month in Petrolina. 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.

Petrolina tends toward drier weather patterns, receiving approximately 440 mm of rain 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, March receives substantial rainfall, averaging 90 mm of precipitation, recorded across 23 rainy days.

In contrast, the drier season, September brings less rainfall, with 2.9 mm over 13 rainy days.

March, the city’s wettest month, has a maximum daytime temperature of 34°C. During the driest month September you can expect a temperature of 35°C. For more detailed insights into the city’s temperatures, visit our Petrolina Temperature page.

Annual Precipitation in Brazil

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

Amsterdam Precipitation Compared World Wide

Petrolina’s average annual precipitation is 440 mm. Let’s compare this to some popular worldwide tourist destinations:

Athens, Greece, receives an average annual precipitation of 400 mm, making it one of the drier Mediterranean climates with rainfall mostly in winter.

Osaka, Japan, experiences 1507 mm of rainfall annually, spread across the year with wetter summers.

Melbourne, Australia, has 690 mm of rainfall annually, spread fairly evenly throughout the year.

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

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

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