Weather in Rotterdam by month: what to expect

The weather in Роттердам is mild but changeable, shaped by its coastal location in the Netherlands. Winters are cool, with temperatures often hovering around 4.6 °C in January, while summers bring warmth without extreme heat, peaking at 18.7 °C in August. The city’s maritime climate means rain is possible year-round, though the intensity varies by season.

Spring and autumn in Роттердам are transitional periods with moderate temperatures. April and May see a gradual rise from 10.3 °C to 14.1 °C, while September and October cool from 16.6 °C to 12.9 °C. These months often balance pleasant weather with occasional showers, making them ideal for exploring the city’s outdoor spaces.

Sunshine hours in Роттердам increase noticeably from March onward, reaching a peak of 12.8 hours per day in June. Even in winter, the city enjoys some daylight, though December averages just 2.6 hours. This variability makes packing for Роттердам a matter of layers and adaptability.

Temperatures in Роттердам follow a gentle curve, with winters rarely dropping below freezing. The coldest month, January, averages 4.6 °C, while nighttime lows can dip to 2.4 °C. By contrast, July and August offer the warmest conditions, with highs of 22 °C and 22.6 °C respectively, though evenings may cool to 15 °C.

Spring in Роттердам brings a steady climb in warmth, from 7.7 °C in March to 14.1 °C in May. This period is marked by fewer temperature swings, making it comfortable for walking along the Maas River or visiting the city’s parks. Autumn cools more gradually, with September still warm at 16.6 °C before dropping to 8 °C by November.

The narrow range between summer highs and lows—just 7 °C in July—reflects Роттердам’s maritime moderation. Even in June, when temperatures reach 21.8 °C, the proximity to water keeps the air from becoming stifling. This consistency makes Роттердам a year-round destination, though the best thermal comfort lies between May and September.

Rainfall in Роттердам is distributed across the year, with no truly dry season. The wettest months are July and October, each receiving around 115 mm and 114 mm of precipitation. Even in drier periods like February (60 mm) or June (51 mm), showers remain a possibility, so an umbrella is a reliable companion.

Summer in Роттердам combines warmth with occasional downpours, particularly in July, when 115 mm of rain falls. However, these showers are often brief, interspersed with sunny spells. August sees a drop to 68 mm, while September brings a return to steadier rainfall at 84 mm. The pattern suggests that even in sunnier months, waterproof layers are wise.

Winter months like November and December are not only cooler but also damper, with 108 mm and 76 mm of precipitation respectively. The combination of 8.4 °C highs in December and frequent rain can make outdoor activities less appealing, though the city’s indoor attractions—museums, cafés, and galleries—offer plenty of alternatives.

For a trip to Роттердам in spring or autumn, layering is key. Days in April or October can shift from 10.3 °C to 15.6 °C, so a mix of light sweaters, a waterproof jacket, and comfortable walking shoes will cover most conditions. A scarf is useful for breezy days along the waterfront.

Summer in Роттердам calls for lightweight clothing, but evenings near the river can feel cooler, even in July or August. Pack breathable fabrics, a light jacket, and sunglasses for the longer daylight hours. A compact umbrella or raincoat is still advisable, given the occasional summer shower.

Winter visits to Роттердам require warmer layers, particularly for January or February, when temperatures hover around 5 °C. A waterproof coat, gloves, and a hat will help navigate the damp, windy conditions. Waterproof footwear is especially useful, as rain and occasional sleet can make pavements slick.