Weather in Shannon

Find out what weather awaits you in Shannon right now. Below, you will find up-to-date data, detailed forecasts, and charts to help you better plan your journey.

The climate in Shannon is best described as temperate maritime, which is typical for much of Ireland. Due to its proximity to the Atlantic Ocean, the weather here is characterized by mildness and a lack of extreme temperature fluctuations. Scorching heat or severe frosts are rare, making the city comfortable to visit at practically any time of year.

Seasons transition smoothly. Summer in Shannon is generally cool and fresh, with average temperatures around 15-16°C, which is perfect for long walks. Winter is mild, with the thermometer hovering around the 6-7°C mark on average, and frost is uncommon. A defining feature of the local climate is the consistently high likelihood of precipitation: rainy days (ranging from 13 to 19 per month) are spread evenly throughout the year, making an umbrella or raincoat essential items in any tourist's luggage.

The climate in Shannon is noted for its mildness and lack of extreme temperature shifts, making the city comfortable to visit year-round. January is traditionally the coldest month with an average temperature of about 5.9°C, while the peak warmth occurs in July, when the air warms up to an average of 15.6°C. This moderate annual range allows tourists to enjoy the nature and sights of Ireland without sweltering heat or bitter cold.

Summer here can be described as pleasantly warm and fresh, ideal for those who dislike the heat. In July and August, daytime highs reach a comfortable 18-19°C, creating excellent conditions for long walks. Winter in the region is quite mild: even on the coldest nights of January and February, the thermometer rarely drops below 3.5-4.5°C, so severe frosts are a rare occurrence, although the air remains cool and damp.

Daily temperature fluctuations in Shannon are quite minor: the difference between the daytime high and nighttime low is usually only 3-6 degrees depending on the season. This ensures a stable atmosphere throughout the day, however, due to the proximity of the ocean and changeable weather, travellers are advised to always carry an extra layer of clothing. Even in warmer months like June or September, evenings can be refreshing.

Shannon, like the rest of Ireland, is characterized by humid and changeable weather with no distinct dry season. Precipitation is distributed fairly evenly throughout the year, so travellers should always have a reliable raincoat or umbrella on hand. Most often, these are not prolonged downpours, but short showers or the characteristic Irish drizzle, which adds a special atmosphere to the landscapes.

According to statistics, the "wettest" month is August, with up to 19 days of rainfall recorded. High humidity is also typical for the shoulder seasons and winter: in March, October, and December, the number of rainy days reaches 18 per month. Thanks to the mild climate and above-freezing temperatures in winter, snow falls extremely rarely, so rain remains the main form of precipitation year-round.

If you are looking for the period with the lowest probability of rainfall, it is worth considering late spring. May is considered the driest month, when the number of rainy days drops to an average of 13. April and early summer (June, July) are also relatively favourable — with about 15 days of rainfall — though even then, the weather can be unpredictable.

When travelling to Shannon, it is important to remember the changeable Irish climate, where the weather can change several times a day. The best principle when packing is layering: a combination of T-shirts, light jumpers, and fleece jackets will allow you to feel comfortable both on cool mornings and during warmer afternoons. Given that even at the height of summer (July-August) temperatures rarely exceed +18°C, and in winter stay in the range of +4...+9°C, warm clothes will be useful in any season.

Since it rains regularly throughout the year (an average of 15–19 rainy days per month), a high-quality waterproof jacket or windbreaker with a hood will be the most important item in your wardrobe. An umbrella may prove useless due to frequent winds, so it is better to rely on a good raincoat. Also, pay special attention to footwear: it must be comfortable for long walks and strictly waterproof so that damp weather does not spoil your impressions of excursions.

If you plan a trip during the winter months, be sure to bring a hat, scarf, and gloves, as high humidity makes the air feel noticeably colder. In summer, despite the cloudiness, do not forget sunglasses and SPF cream — the sun in Ireland can be unexpectedly active during clear hours. Regardless of the time of year, bring a power adapter (Type G) to charge your gadgets without any issues.