The highest day temperature in January 2026 was 89°F. The lowest night temperature was 69°F. The average values for day and night temperatures during January were 85.3°F и 72.2°F respectivly.

The average sea surface temperature in January 2026 for Mayaguez was 84.7°F. The maximum and minimum values were 84.4°F and 85.0°F respectively.

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

Precipitation total in January for Mayaguez is 2.5 in. It makes january one of the least rainy months of the year.

The average wind speed in January is 8.6 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 Mayaguez in January is 7.3 hours.