German bombing flattened Rotterdam's medieval centre on 14 May 1940, killing 900 people and leaving 80,000 homeless; rather than rebuild in kind, the city turned itself into a testbed for modern architecture. Rem Koolhaas, Piet Blom and Ben van Berkel all built here, including Blom's tilted Cube Houses and the horseshoe-shaped Markthal. The Port of Rotterdam remains Europe's largest, a Rhine-and-Meuse gateway that still anchors the local economy. More than half the city's roughly 674,000 residents have at least one parent born abroad, among them large Surinamese, Turkish and Moroccan communities, and Erasmus University carries the name of the Renaissance scholar who once lived here.
Nights sit around 11°C and afternoons around 19°C.
Rotterdam has real seasons: summer afternoons sit around 22°C, winter ones around 7°C.
Rain is spread through the year — about 883 mm in total, from 92 mm in August down to 42 mm in April — so no single month is a washout.
Air quality is worth watching: February averages an AQI of 60, while July clears to 44.
Days stretch to about 16.4 hours of light in June and shrink to 7.6 in December — something to weigh if you work to a fixed timezone.
No month in Rotterdam matches what you're after, so come for the place rather than the weather. Expect fast internet (327 Mbps) and a high cost of living (about €2700 a month).
Affiliate links: if you book through them I earn a small commission, at no extra cost to you.
