The highest day temperature in January 2025 was 51°F. The lowest night temperature was 30°F. The average values for day and night temperatures during January were 41.6°F и 38.2°F respectivly.

The average sea surface temperature in January 2025 for London was 41.4°F. The maximum and minimum values were 38.4°F and 44.0°F respectively.

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

Precipitation total in January for London is 1.9 in.

The average wind speed in January is 10.2 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 London in January is 3.6 hours.