Jacareí Weather in January

With daytime temperatures of 29°C (84°F) and nighttime lows of 20°C (68°F), January in Jacareí brings high temperatures during the day. It is also the wettest month of the year, so pack an umbrella.

Rainfall in Jacareí in January

As part of the rainy season, Jacareí sees around 22 days of rain in January, with an average of 239 mm (9.4 in). Rainy season showers tend to be fairly substantial. A good rain jacket or umbrella is worth having with you most days.

Temperature in Jacareí in January

In January, Jacareí sees high temperatures, with highs of 29°C (84°F). Nights drop to around 20°C (68°F). The days can feel warmer than the evenings, so packing for both parts of the day is a good idea. With overnight lows of 20°C (68°F), evenings can feel noticeably cooler than the daytime. An extra layer is a good idea, though the cool air makes for a good night's sleep.

Sunshine in Jacareí in January

The month brings about 170 hours of sunlight, offering a comfortable mix of sun and rainy moments.

Should you favor a climate that's both dry and comfortably warm, April, May, June, July, August and September typically offer the most agreeable circumstances. If you're seeking pleasant, dry and sunny weather somewhere else in the world, our weather planner can help you explore other options.