Petrolina Weather & Climate: Best Time to Visit

The temperature in Petrolina remains steady throughout the year, providing a consistently very hot climate. Average daytime temperatures reach a very hot 36°C (97°F) in October. In August, the coolest month of the year, temperatures drop to a very warm 31°C (88°F).

At night, temperatures range from around 23°C (73°F) in October to 20°C (68°F) in August.

Check out our detailed temperature page for more information.

Temperature ranges by month

Petrolina maintains relatively dry conditions year-round, recording average annual precipitation of 440 mm (17 in). Petrolina can be quite wet during March, receiving approximately 90 mm (3.5 in) of precipitation over 23 rainy days.

In contrast, during the driest month (September), you will experience much drier conditions, with 2.9 mm (0.1 in) of precipitation spread across 13 rainy days days. For more details, please visit our Petrolina Precipitation page.

The mean monthly precipitation over the year, including rain, hail, and snow

The average number of days each month with precipitation

Petrolina experiences moderate variation in sunshine hours across the seasons. With 8.8 hours daily sunshine in August, it dips to 6.9 hours in June, offering a balanced mix of sunny and overcast days.

Visit our detailed sunshine hours page for more information.

Monthly hours of sunshine

Daily hours of sunshine

The relative humidity is moderate throughout the year in Petrolina.

The city experiences its highest humidity in April, reaching 70%. In September, the humidity drops to its lowest level at 48%. What does this mean? Read our detailed page on humidity levels for further details.

Relative humidity over the year