Leiden

Planning a trip to Leiden? Check out the latest weather information to make your journey as comfortable as possible. Below, you will find current data, forecasts, and helpful charts.

The climate in Leiden, located in the Netherlands, is typically temperate maritime. This means there are no sharp temperature fluctuations, and the weather is known for its variability. Travelers should be prepared for the fact that even on a clear day, an umbrella or a light waterproof jacket might suddenly be needed.

Leiden has four distinct seasons. Winters here are relatively mild and wet, with average temperatures around +5°C...+6°C, although night frosts are possible. Spring brings a gradual warming and more sunlight, bringing the city's many parks and gardens to life. Summers are usually warm and pleasant, with average temperatures around +17°C...+19°C—an ideal time for long walks and exploring the city. In autumn, Leiden is dressed in crimson and gold, but the weather becomes cooler and rainier.

A feature of Leiden's climate is its fairly high humidity and frequent precipitation, which is distributed throughout the year. Although data shows low monthly rainfall totals, the number of rainy days remains significant, especially from October to December. Therefore, when planning your trip, don't forget to pack a raincoat or an umbrella so that the whims of the weather don't spoil your experience of this charming city.

The temperature patterns in Leiden exhibit classic features of a temperate maritime climate, without extreme peaks of heat or cold. The annual temperature cycle is smooth, with the coldest period occurring in January, when the average temperature is around 5.5°C. During this time, average minimum temperatures stay at 3.9°C, while maximums rise to 7.0°C. The warmest month is August, with an average temperature of 18.8°C; daytime maximums in August reach an average of 21.2°C, and nighttime minimums drop to 16.3°C.

The summer months in Leiden, from June to August, are characterized by pleasantly warm weather. Average temperatures during this period gradually increase from 16.6°C in June to 18.8°C in August. Daytime maximums usually fluctuate within a comfortable range of 19.3°C to 21.2°C, creating excellent conditions for exploring the city without exhausting heat. Nights also remain mild, with temperatures between 13.9°C and 16.3°C.

Winter in Leiden, covering December, January, and February, is notable for its mildness and lack of severe frosts. Average monthly temperatures this season range from 5.5°C to 6.4°C. Although night temperatures can approach freezing, average minimum values usually remain above zero, ranging from 3.9°C to 4.9°C. Diurnal temperature fluctuations in Leiden are small throughout the year: the difference between average maximum and minimum temperatures for each month is usually only 3-5°C, indicating a stable temperature environment without sharp changes between day and night.

Precipitation in Leiden is a hallmark of the local climate and is distributed throughout the year, so there is no distinct dry season. Based on the data provided, the total monthly precipitation is quite low, usually between 2 and 4 mm. However, the number of days with precipitation remains significant year-round. This suggests that frequent but light rain or drizzle is more typical for Leiden than heavy downpours.

The highest probability of catching rainy weather in Leiden occurs during the autumn and winter. October, November, and December stand out as the months with the maximum number of rainy days—averaging 18 days each. January is also quite wet, with 16 rainy days. At the same time, September and October show the highest average precipitation in millimeters (4 mm), which coincides with the high frequency of rain during this period. Even if it rains often, it is generally not very intense.

The spring months bring a slight decrease in the frequency of precipitation. The "driest" month of the year in terms of rainy days is April, when precipitation is recorded on average only 11 days. In March (15 days), May, and June (12 days each), rain also occurs less frequently than in autumn and winter, but still remains a regular occurrence. The summer months, July and August, despite the warmer weather, are also not without rain—averaging 14 rainy days. This once again highlights the changeable maritime climate of the Netherlands, so an umbrella or raincoat will be useful at any time of year when visiting Leiden.

When packing for Leiden, keep its temperate maritime climate in mind, which is characterized by unpredictability and a high probability of rain throughout the year. A key element of your wardrobe should be waterproof clothing: a light raincoat or a compact umbrella will be indispensable, considering that there can be between 11 and 18 rainy days per month. Comfortable shoes are also extremely important, preferably with moisture protection, as you will be doing a lot of walking. The best strategy for packing for Leiden is the layering principle. T-shirts, long-sleeved tops, light sweaters, and cardigans will allow you to easily adapt to the whims of the weather by adding or removing layers as needed.

During the warmer months, from late spring to early autumn (roughly May to September), when average temperatures range from +12.7°C to +18.8°C, the basis of your luggage should be light trousers or jeans, t-shirts, and shirts. However, even in the warmest months, July and August, with maximum temperatures around +20°C...+21°C, evening chills, sudden rain, or a fresh breeze are not uncommon. So, don't forget a light jacket, windbreaker, or a warm sweater. Sunscreen and a hat will come in handy on clear summer days for enjoying walks along Leiden's canals and through its parks.

For a trip in the cooler months, from October to April, when average temperatures range from +5.5°C to +13.3°C and the number of rainy days reaches its peak—especially from October to December (up to 18 days)—you will need more robust gear. Be sure to bring a warm, waterproof, and preferably windproof jacket, sweaters, warm trousers, as well as a hat, scarf, and gloves, especially for the winter months (December–February). Insulated and waterproof footwear will be the key to comfortable walks through Leiden's historic center during this period. Remember that even in winter, severe frosts are rare here, but high humidity and wind can make it feel much colder.