The highest day temperature in January 2026 was 61°F. The lowest night temperature was 25°F. The average values for day and night temperatures during January were 45.6°F и 38.8°F respectivly.

The average sea surface temperature in January 2026 for Giresun was 51.3°F. The maximum and minimum values were 49.0°F and 55.2°F respectively.

You can expect various weather conditions during January. Be ready for sunny, cloudy or even gloomy days.

Precipitation total in January for Giresun is 3.0 in. It makes january the most rainy month of the year.

The average wind speed in January is 7.3 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 Giresun in January is 5.2 hours.