The highest day temperature in January 2026 was 88°F. The lowest night temperature was 75°F. The average values for day and night temperatures during January were 86.0°F и 78.5°F respectivly.

The average sea surface temperature in January 2026 for Jaco was 87.9°F. The maximum and minimum values were 87.2°F and 88.4°F respectively.

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

Precipitation total in January for Jaco is 1.6 in. It makes january one of the least rainy months of the year.

The average wind speed in January is 4.6 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 Jaco in January is 6.2 hours.