What January feels like in Rotterdam
January is the coldest stretch of winter in Rotterdam. It is cold outside for most of the day; indoor breaks come as a relief. Little changes after sunset — nights are cold, only slightly below the daytime level. Damp air makes the cold feel rawer than the numbers alone suggest.
Rain in Rotterdam in January
Rain is part of normal life this month, falling on about every other day. A rainy day brings about 5.1 mm (0.2 in) on average — steady rain rather than a passing shower. Across the year Rotterdam averages about 5.4 mm per rainy day, so January is typical.
Daylight and sunshine in January
On 15 January the sun rises at about 8:43 am and sets around 4:58 pm local time, giving 8 h 15 min of daylight. The days are stretching out — 27 min more daylight than mid-December. Measured sunshine covers about 47% of the daylight — sun and cloud share the day.
How January compares to the rest of the year
January is the coolest month of the year in Rotterdam. Afternoons run 0.9°C (1.6°F) cooler than in December, with 2 mm less rain. This is the low point, and February starts to warm up. The next month's average high: 7.3°C (45.1°F).
Who January suits
- Sightseeing: less ideal — it is cold for long walks.
- Parks & outdoor: less ideal — too cool to sit outside for long.
- Beach: less ideal — the sea air is too cool.
Tips for visiting Rotterdam in January
Rain Protection
A packable rain jacket saves the day on showery afternoons.
Warm Layers
A proper winter coat, with gloves and a hat for early starts.
Quick questions
How warm is Rotterdam in January?
Expect around 6.3°C (43.3°F) in the afternoon and 1.9°C (35.4°F) at night, which most visitors would call cold.
Does it rain a lot in Rotterdam in January?
Yes, fairly — rain falls about every other day and totals about 72 mm, so an umbrella is worth carrying.
What should I wear in Rotterdam in January?
The numbers point to rain protection and warm layers. There is little need to change for the evening.
Is January or February better for visiting Rotterdam?
February scores better on our climate ranking (#9 of 12 vs #11), rated Fair against Fair. February is warmer and has fewer rainy days.