January weather forecast
Porto, Portugal

January in Porto, Portugal offers cool temperatures typical of the season. Compared to the milder conditions of December, this month sees a drop in average high and low temperatures to 13.8°C (56.8°F) and 5.2°C (41.4°F) respectively. Noteworthy is the generous rainfall, with precipitation reaching a significant 147mm (5.79"). Beach activities may not be in high demand during this month due to the cool ocean temperature and the shorter daylight hours. Undoubtedly, the city adopts a slower pace in the post-holiday period.

Temperature

January is the month when Porto sees the lowest average temperatures, with a high of 13.8°C (56.8°F) and a low of 5.2°C (41.4°F).

Rainfall

In Porto, in January, it is raining for 17 days, with typically 147mm (5.79") of accumulated precipitation. In Porto, during the entire year, the rain falls for 147 days and collects up to 1237mm (48.7") of precipitation.

Sea temperature

In Porto, Portugal, the average seawater temperature in January is 14.3°C (57.7°F).
Note: Dipping into 14.3°C (57.7°F) below 10°C (50°F) is possible with the right protection; absent that, anticipate cold shock and hampered breathing. Swimming momentarily at 13°C (55.4°F) can be jarring.

Daylight

In January, the average length of the day is 9h and 37min.
On the first day of the month, sunrise is at 07:59 and sunset at 17:15. On the last day of January, in Porto, sunrise is at 07:46 and sunset at 17:49 WET.

Sunshine

January and December, with an average of 4h of sunshine, are months with the least sunshine in Porto.

UV index

The average daily maximum UV index in January in Porto is 2. A UV Index estimate of 2, and below, represents a low threat to health from exposure to the Sun's UV radiation for ordinary individuals.
Note: In January, the average maximum UV index of 2 translates into the following recommendations:
Extended time in the sun generally does not harm most, but those with sensitive skin, infants, and children should always be protected. It's recommended to limit sun exposure when its radiation is at its peak during midday. Counter UV radiation's ill effects with clothing designed for sun safety and UV-resistant eyewear.