Weather in Harlingen

Stay up to date with the current weather conditions in Harlingen before you embark on your journey. In this section, you will find the latest data, detailed forecasts, and convenient charts to help plan your trip.

The climate in Harlingen can be described as subtropical, featuring long, hot summers and very mild, short winters. Thanks to its southern location, the city offers comfortable travel conditions almost all year round; however, be prepared for high temperatures during the summer season. It rarely gets truly cold here, making this destination attractive for tourists looking to escape harsh frosts.

The summer months bring intense heat: from June to August, the average temperature confidently stays above 30°C, and can reach 35°C at peak times. Winter here is more reminiscent of a pleasant spring: in January and February, the air warms up to an average of 17–19°C. The transitional seasons pass quickly, with temperatures rising rapidly by May.

Regarding precipitation, the weather in Harlingen has its own distinct features. The "wettest" period is early autumn, particularly September, when the number of rainy days reaches its maximum. During the rest of the year, especially in winter and spring, rain falls less frequently, allowing you to enjoy plenty of sunny days and plan walks without constantly checking the weather forecast.

The climate in Harlingen can be characterised as warm and favourable throughout the year, with no extreme cold. The annual temperature chart shows a smooth transition from very mild winters to hot summers. The coldest month is January with an average of 17.8°C, yet even then, daytime highs reach a comfortable 22.5°C. The peak heat occurs in August, when the average temperature rises to 30.8°C, and daytime air warms up above 35°C.

The summer period here is truly sultry and long. From June to September, average daily highs remain steadily in the 32–35°C range, while nights remain very warm, with temperatures around 26°C. Winter, by contrast, feels very mild: in December and February, daytime temperatures often sit at 23–24°C, allowing for walks without heavy winter clothing. Night-time temperatures in winter rarely drop below 13–14°C.

It is also worth noting the daily temperature fluctuations, which average around 9–10 degrees. This is especially noticeable during the transitional seasons: for example, in April, while the daytime heat nears 30°C, the nights bring a pleasant freshness with temperatures around 20°C. Such variation makes evenings in Harlingen comfortable even after the hottest days, allowing tourists to take a break from the midday sun.

Precipitation in Harlingen falls primarily as rain, as even in the coldest months, the air temperature remains comfortable and does not drop to freezing. Throughout the year, a certain seasonality can be observed: periods with more frequent rains alternate with relatively dry months, which is worth considering when planning a trip.

The most humid time of year is summer and early autumn. The peak frequency of precipitation occurs in September, when an average of 15 rainy days is recorded. The summer months—June, July, and August—are also characterised by increased precipitation activity (from 10 to 11 days with rain), although the amount of moisture falling may be moderate.

The driest month of the year is considered to be December, when the number of days with precipitation drops to a minimum—around 4. The spring period, especially from February to April, is also characterised by stable and dry weather: rains are rare during this time, averaging about 6 days a month, creating excellent conditions for open-air walks.

Given Harlingen's warm climate, the basis of your wardrobe should consist of light and breathable items. In summer, when the average temperature often exceeds 30°C and the sun is particularly active, clothing made from natural fabrics (cotton, linen), a wide-brimmed hat, and sunglasses will be indispensable. Be sure to pack reliable sunscreen in your suitcase, as UV radiation here can be intense even on cloudy days.

Winters in this region of the United States are very mild, and severe frosts do not threaten tourists. For trips between December and February, when night-time temperatures can drop to 13–14°C, we recommend using the layering principle. Take a light jacket, a windbreaker, or a cosy cardigan that you can throw on in the evening and easily take off during the day when the air warms up to comfortable levels.

Despite the overall rainfall level being low, in certain months, such as September and June, the number of rainy days increases noticeably. A compact umbrella or a light raincoat would be a wise addition to your luggage so that short-term bad weather does not spoil your plans. Also, do not forget comfortable walking shoes, as exploring local attractions will surely require long walks.