Weather in Anglesey

Stay informed about the weather conditions in Anglesey before starting your journey. Below you will find the latest data, detailed charts, and an up-to-date weather forecast.

The climate in Anglesey can be described as temperate maritime, strongly influenced by the proximity of the ocean. Thanks to its island location, there are no extreme temperature fluctuations here: winters are mild without severe frosts, and summers are fresh and cool without exhausting heat. This creates comfortable conditions for travellers who prefer moderate weather for walks and excursions.

The temperature regime is characterized by high stability throughout the year. In the warmest months, July and August, the air warms up to an average of 15–16°C, which is ideal for outdoor activities. In winter, the thermometer rarely drops below 5°C, so snow here is an infrequent and short-lived phenomenon.

An important feature of the local weather is the high frequency of precipitation. Rainy days occur regularly in any season: from 13 days in April to 21 days in December. However, these are often not torrential downpours, but characteristic drizzle or short-term rains that support the famous greenery of the local landscapes. Tourists are advised to always have an umbrella or raincoat with them, as the weather can be changeable.

The climate of Anglesey is distinguished by pronounced mildness and stability, which is typical for the island territories of the United Kingdom. There is no extreme heat or severe frost here, and the annual temperature progression is very smooth. The coldest month is usually January with an average of about 6.5°C, while the peak warmth occurs in August, when the air warms up to an average of 15.7°C. Such a small difference between seasons makes the weather on the island quite predictable.

The summer period in Anglesey can be described as pleasantly fresh and moderately warm. Even at the height of the season, in July and August, maximum temperatures rarely exceed 17.5°C. This time of year is ideal for those who do not tolerate heat well: a comfortable coolness reigns here, conducive to long walks in the fresh air without the risk of overheating.

Winters here are cool, but not freezing. From December to February, the thermometer usually fluctuates in the range of 5°C to 8°C. A characteristic feature of the local climate is the minimal amplitude between day and night temperatures: the difference is often only 2–3 degrees. This means that tourists will not have to worry about a sharp drop in temperature with the onset of the evening at any time of the year.

Precipitation in Anglesey is distributed fairly evenly throughout the year, which is characteristic of the maritime climate of the UK. It is difficult to single out a clearly defined dry season here, so travellers should be prepared for changeable weather in any month. Rains are most often moderate in nature, but high humidity and frequent cloudiness are habitual companions of the local climate.

The wettest period is considered to be late autumn and early winter. The peak of precipitation falls on October and December, when the highest number of rainy days is recorded — up to 20–21 per month. In the winter months, despite the coolness, precipitation falls mainly in the form of rain, as temperatures rarely drop to values conducive to a stable snow cover.

The most comfortable time in terms of precipitation can be called spring. In April and May, the lowest number of rainy days is observed (about 13–14), and the overall level of precipitation decreases. Summer in Anglesey does not guarantee complete dryness: for example, in August it can rain quite often (up to 19 days), so even in the warm season it is recommended to have an umbrella or raincoat with you.

When planning a trip to Anglesey, it is important to remember the changeable island climate and frequent winds from the sea. The main principle when choosing a wardrobe here is layering. Since even in the warmest summer months, July and August, the average temperature stays around 15–17°C, you are unlikely to need many clothes for hot weather. Be sure to bring a high-quality windproof jacket or a raincoat with a hood: an umbrella may turn out to be useless during strong gusts of wind typical for the coast.

If your trip is planned for autumn or winter, when the number of rainy days reaches 20 per month, stock up on warm things. Thermal underwear, cosy sweaters, a scarf, and a hat will help you feel comfortable at temperatures of 6–9°C, which may feel lower due to humidity. In spring and summer, the weather is milder, but the evenings still remain cool, so a fleece jacket or a light jumper over a t-shirt will be indispensable during walks.

Pay special attention to footwear, as Anglesey is famous for its picturesque walking routes. You will need comfortable, waterproof boots or sneakers with non-slip soles for walking on rough terrain. Despite the frequent cloudiness, do not forget sunscreen and sunglasses, especially if you plan to spend a lot of time near the water, where the sun is active even in cool weather.