The highest day temperature in January 2026 was 57°F. The lowest night temperature was 16°F. The average values for day and night temperatures during January were 38.0°F и 34.1°F respectivly.

The average sea surface temperature in January 2026 for Mamaia was 43.6°F. The maximum and minimum values were 37.4°F and 48.4°F respectively.

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

Precipitation total in January for Mamaia is 1.5 in. It makes january one of the most rainy months of the year.

The average wind speed in January is 12.6 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 Mamaia in January is 4.5 hours.