The highest day temperature in January 2026 was 89°F. The lowest night temperature was 73°F. The average values for day and night temperatures during January were 82.7°F и 78.1°F respectivly.

The average sea surface temperature in January 2026 for Guaruja was 85.4°F. The maximum and minimum values were 83.6°F and 87.0°F respectively.

Most of the days in January are gloomy but you can also expect sunny days.

Precipitation total in January for Guaruja is 3.5 in. It makes january one of the most rainy months of the year.

The average wind speed in January is 5.6 mph. This value is relatively stable throughout the year.

We are using day length and cloud cover information for each day of the month to calculate averages for this chart. Average sunny hours for Guaruja in January is 5.5 hours.