Jacareí Weather & Climate: Best Time to Visit

With minimal seasonal shifts, Jacareí experiences a constant climate year-round. Average maximum daytime temperatures range from a comfortable 30°C (86°F) in February, the warmest time of the year, to a comfortable 24°C (75°F) during cooler months like July.

At night, you can expect temperatures ranging from 20°C (68°F) in February to around 12°C (54°F) during July.

Check out our detailed temperature page for more information.

Temperature ranges by month

Jacareí has a notably wet climate with abundant precipitation, recording 1396 mm (55 in) of rainfall per year. Significant seasonal changes in precipitation occur throughout the year. In the wettest month, January it receives heavy rainfall, averaging 239 mm (9.4 in) of precipitation, recorded across 22 rainy days. In contrast, the driest month August brings less rainfall, with 40 mm (1.6 in) over 9 rainy days. For more details, please visit our Jacareí Precipitation page.

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

The average number of days each month with precipitation

While the amount of sunshine in Jacareí varies throughout the year, all seasons offer their own charm. Enjoy up to 6.2 hours of daily sun in July, and experience slightly darker atmosphere in December, with about 5.0 hours of daily sunlight.

Visit our detailed sunshine hours page for more information.

Monthly hours of sunshine

Daily hours of sunshine

The relative humidity is high throughout the year in Jacareí.

The city experiences its highest humidity in January, reaching 80%. In August, the humidity drops to its lowest level at 74%. What does this mean? Read our detailed page on humidity levels for further details.

Relative humidity over the year