The highest day temperature in January 2025 was 87°F. The lowest night temperature was 54°F. The average values for day and night temperatures during January were 81.5°F и 59.3°F respectivly.

The average sea surface temperature in January 2025 for Alajuela was 87.2°F. The maximum and minimum values were 85.8°F and 88.8°F respectively.

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

Precipitation total in January for Alajuela is 1.4 in. It makes january one of the least rainy months of the year.

The average wind speed in January is 6.3 mph. It makes January one of the most windy months of the year for Alajuela.

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 Alajuela in January is 7.9 hours.