Weather in Genoa in January

A hard month. January asks something of you. Go in knowing what. Highs sit at 9.9 °C and the day is short; this is an indoors-with-excursions month, not an outdoors-all-day one.

January ranks 12 of 12 — near the bottom of Genoa's year. June is the month that works, and the swing between the two is 35 points, which is a different holiday rather than a slightly better one.

Rain on 7 days, 2 of them heavy. Enough to need a plan B, not enough to need a plan around it. Layers, and a genuinely waterproof outer — at 9.9 °C the difference between a good day and a miserable one is entirely down to what you are wearing.

What the averages hide

The averages here are honest — no hidden extremes worth planning around. Across the twenty years measured, the hottest January day reached 21.9 °C and the coldest night fell to -2.6 °C, and the wettest single day dropped 31 mm — roughly 55% of the month's rain in one day.

January is moderately variable: 4 mm in the driest year against 156 mm in the wettest, around an average of 56 mm. Roughly two Januarys in three land near that average, and the third does something else entirely.

Wind is light at 6.5 km/h, so the temperature on the page is close to the temperature on your skin, and humidity runs at 84%, which at 9.9 °C means damp rather than muggy — the kind of cold that gets into a coat and stays there.

How January sits in the year

Temperatures hold steady either side: 10.7 °C in December, 9.9 here, 11 in February. Nothing about the timing within the month matters much.

Daylight in January

January sits at the dark end of Genoa's year — 9.2 hours of daylight against 15.5 at midsummer, gaining 0.8 hours across the month. Sightseeing days are genuinely shorter, and an itinerary built for summer will not fit.

Sea temperature

The sea sits at about 13.5 °C in January — too cold to swim without a wetsuit. The sea peaks at 24.5 °C in August and bottoms out at 13.1 °C — water lags the air by a month or two, which is why the best swimming often comes after the best weather.

How busy it gets

Off season. The genuine off season: cheapest by a distance, with the caveat that some tours and restaurants close entirely.

Crowd levels are estimated from climate desirability and school-holiday calendars, not from visitor numbers.

January in Genoa versus nearby

If Genoa is one option among several, the nearby comparison is worth making. Milan is close enough to be a coin toss — 2.3 °C cooler, the same number of rain days. Nice is a better bet in January — 2.3 °C warmer, the same number of rain days.

So: January is a compromise. June is 35 points better and is what Genoa is actually like at its best — worth moving the trip for if that is possible, and worth adjusting expectations for if it is not.

Every month in Genoa

See all twelve months in Genoa, or where else to go in January.