Sluis

Planning your day in Sluis? Check out the latest weather information: here you will find up-to-date data, forecasts, and helpful charts to make your stay as comfortable as possible.

The climate in Sluis, located in the Netherlands, is characterized as temperate maritime. This means the city does not experience sharp temperature fluctuations throughout the year, offering tourists relatively mild weather conditions for their visit.

Sluis has four distinct seasons. Summer, lasting from June to August, is generally warm and pleasant, with average temperatures ranging from 16.9°C to 19.1°C. This creates comfortable conditions for walking and exploring the city. Winters, from December to February, are quite mild, with average temperatures around 5.6°C - 6.6°C; severe frosts are rare here. Spring (March-May) and autumn (September-November) are transitional periods with gradual temperature changes and shifting natural colors.

One of the characteristic features of the weather in Sluis is the relatively high number of days with precipitation throughout the year, even though the monthly rainfall volume is low (2-3 mm). The number of "wet days" varies from 10 in June to 17 in December. This means that light rain or drizzle can catch you at any time of year, so having an umbrella or raincoat handy is a good idea. The highest number of days with precipitation occurs during the autumn-winter period, from October to January.

The weather in Sluis is characterized by a temperate maritime climate with distinct but mild seasonal temperature changes. Throughout the year, the average air temperature changes gradually: the coldest month is January, with an average temperature of 5.6°C (minimum night around 4.0°C, maximum day up to 7.2°C). The warmest month is August, when the average temperature reaches 19.1°C, with daytime highs averaging 21.7°C and nighttime lows around 16.4°C. Thus, the annual course of average temperatures is quite smooth, without extreme jumps.

Summer months in Sluis, especially June, July, and August, are marked by pleasant warm weather. Average daytime temperatures during this period range from 19.8°C to 21.7°C, creating comfortable conditions for outdoor activities and walks. Nights also remain warm, with average minimums from 14.1°C to 16.4°C. Winter in Sluis is mild and cool, but without severe frosts. From December to February, average temperatures stay in the range of 5.6°C to 6.6°C. Nighttime temperatures on average do not drop below 4.0°C - 5.1°C, while during the day the air warms up to 7.2°C - 8.4°C.

Diurnal temperature fluctuations in Sluis are small throughout the year. The difference between average maximum daytime and average minimum nighttime temperatures usually ranges from 3°C to nearly 6°C (for example, about 3.2°C in January and about 5.7°C in June). This indicates an absence of sharp temperature drops between day and night. Spring months (March-May) show gradual warming: the average temperature rises from 7.4°C in March to 13.0°C in May. In autumn (September-November), a similar smooth cooling occurs: from 16.7°C in September to 9.0°C in November.

The city of Sluis sees a rather specific precipitation pattern throughout the year. Total precipitation remains surprisingly low every month, at just 2 mm from January to August and slightly increasing to 3 mm per month from September to December. This indicates that heavy and prolonged rains are rare here.

Despite the small total amount, precipitation is spread over a significant number of days. The highest frequency of rainy days occurs in the winter months and late autumn: December averages 17 days with precipitation, while January, October, and November have 16 days each. The "driest" month in terms of the number of rainy days is June, when it rains on average only 10 days, followed by April with 11 rainy days.

Given the extremely low monthly precipitation occurring over 10-17 days, it can be assumed that Sluis is characterized primarily by light and brief precipitation, such as drizzle or short light rain, rather than intense downpours. Although a slight increase in total precipitation to 3 mm is recorded from September to December, this still points to a dominance of very moderate moisture. Based on average temperatures, snow is unlikely, and precipitation falls mainly as rain.

When planning a trip to Sluis, it is important to consider the changeable weather characteristic of the Netherlands. Moderate temperatures and frequent, though not heavy, precipitation prevail throughout the year. Therefore, layering should be your key packing principle. A light waterproof and windproof jacket, as well as an umbrella, will be your reliable companions almost any time of year, as the number of rainy days is quite high each month.

In the summer months (June-August), when average temperatures range from 17°C to 19°C, light clothing such as T-shirts, short-sleeved shirts, shorts, or light trousers will be comfortable during the day. However, evenings can be cool, so do not forget a sweater or fleece. Sunscreen and a hat are also useful on clear days. For the shoulder seasons (April-May and September-October) with temperatures from 9°C to 17°C, jeans or thick trousers, long-sleeved T-shirts, jumpers, and a mid-season jacket are ideal. Comfortable walking shoes are a must, as you will surely want to explore the charming streets of Sluis.

In winter (December-February) and early spring (March), average temperatures stay in the range of 5°C to 7°C. During this period, you will need warm clothes: sweaters, warm trousers, a winter jacket (preferably waterproof and windproof), a hat, scarf, and gloves. Although severe frosts are rare here, high humidity and wind can make it feel colder. Regardless of the season, choose comfortable, waterproof footwear, as you will likely be walking a lot and the possibility of rain remains year-round.