Climate and monthly weather forecastSligo, Ireland

The climate of Sligo

Sligo, a city in the northwest of Ireland, embraces a maritime climate, namely a Cfb Köppen climate classification. This type of climate exhibits similarities to a marine west coast climate, but is characterized by mild, cool summers, while winters tend to be damp and relatively mild.

The city's weather demonstrates conspicuous attributes that indicate a consistent precipitation distribution throughout the year. The variance in rainfall ranges from around 78mm (3.07") in April to 134mm (5.28") in October. In terms of rainy days, Sligo experiences approximately 18 to 23 wet days per month across the year.

The temperature in Sligo fluctuates all year round, ranging from 1°C (33.8°F) in the colder months of January and February up to 18°C (64.4°F) during the peak of summer months of July and August. The sea temp, notwithstanding, tends to be colder, starting from 9°C (48.2°F) in the beginning up to mid-year, then gradually warm up to 14°C (57.2°F) by July throughout September, and cool down towards the end of the year.

Sunlight exposure in Sligo follows a similar seasonal pattern. From an average of 8 daylight hours in January, the city enjoys up to around 17.1 daylight hours in June before tapering off towards the end of the year. This is complemented by a varying average monthly UV index, peaking at 6 during the summer months of June and July, and dropping to 0 in the winter months.

The Best Time to Visit Sligo

Considering the weather parameters, the best period to visit Sligo extends from late June to early September. During this period, the city experiences its warmest weather with average temperatures peaking at 18°C (64.4°F) and sea temperatures equally pleasant at around 14°C (57.2°F). The sunlight hours reach a maximum of around 17 hours by June and the UV index averages at its highest (6), providing plentiful opportunities for outdoor activities and exploration. The rainfall isn't considerably high, ensuring that the days are mostly dry.

The Worst Time to Visit Sligo

The less favorable times to visit Sligo occur in the colder months, starting from late October to early February. During these months, temperatures often descend down to about 1°C (33.8°F) with high chances of precipitation, as the rainfall can measure up to and above 125mm (4.92"). Furthermore, the city witnesses fewer daylight hours, dropping to as low as 7.4 hours in December, and limiting outdoor activities due to earlier sunset.

Spring Weather in Sligo

Spring in Sligo is characterized by gradually increasing temperatures and subtle variations in daylight. Starting from March, temperatures rise marginally from 7°C (44.6°F) to reach 12°C (53.6°F) by May, while the minimum temperature also follows suit, increasing from 2°C (35.6°F) to 5°C (41°F). Rainfall varies, with March receiving around 109mm (4.29") of rainfall and May closest to 81mm (3.19"). Daily sunlight hours prevail for longer, commencing from nearly 12 daylight hours in March, extending to approximately 16 hours in May.

Summer Weather in Sligo

Summertime in Sligo is rather temperate with average high temperatures ranging between 14°C (57.2°F) to 18°C (64.4°F). The minimum temperatures follow the same fashion, increasing from 5°C (41°F) in June to about 10°C (50°F) by August. Rainfall figures are moderate, not exceeding 93mm (3.66") in July. The sea temperature warms up to 14°C (57.2°F), making swimming and water activities more enjoyable. June offers the longest daylight hours, measuring around 17.1 hours.

Autumn Weather in Sligo

Autumn in Sligo witnesses a gradual decline in temperatures and shorter daylight hours. The average high temperature drops from 16°C (60.8°F) in September to 9°C (48.2°F) by November, while the minimum temperature reduces from 8°C (46.4°F) to 3°C (37.4°F) over the same period. Rainfall demonstrates a marked increase with October witnessing the highest rainfall of about 134mm (5.28"). The sea temperature maintains warmth at around 14°C (57.2°F) in September but declines to 11°C (51.8°F) by November.

Winter Weather in Sligo

Winter in Sligo registers low temperatures with the lowest descending to 1°C (33.8°F) and the highest not surpassing 8°C (46.4°F). The city bears a maximum of 131mm (5.16") rainfall in December, with the number of rainy days increasing to about 23 days. Sea temperature plunges to 10°C (50°F), making it quite cold for water-based activities. Sunshine hours become significantly short with only 7.4 hours of daylight in December, rendering it the darkest period of the year.

Weather in January

The year in Sligo commences with moderate temperatures between highs of 7°C (44.6°F) and lows of 1°C (33.8°F), a typical winter climate for this region. January is characterized by limited daylight hours, often resulting in darker, shorter days. Weather in January »

Weather in February

Following January, February sees slightly less frequent rainfall, making it slightly drier. It retains the moderate winter temperatures characteristic to Sligo. The longer daylight hours signify an approaching spring, allowing residents more hours to enjoy the outdoors. Weather in February »

Weather in March

March heralds the arrival of spring in Sligo, as mild temperatures between a high of 9°C (48.2°F) and low of 2°C (35.6°F) make the weather more tolerable. Rainwear remains a constant in the local wardrobe as the frequency and volume of precipitation persists. Weather in March »

Weather in April

In April, Sligo begins to exhibit warmer spring temperatures peaking at 12°C (53.6°F) to a low of 3°C (37.4°F), providing a welcome change from the preceding months' chillier conditions. The increase in rainfall to 78mm (3.07") also marks a shift to a moist springtime climate. Weather in April »

Weather in May

The temperature in May continues to ascend, signaling the onset of summer in Sligo. Showers persist, but the city's rising temperatures make the rainfall a refreshing change rather than a nuisance. Furthermore, the steady lengthening of sunshine hours adds charm to the city's appearance. Weather in May »

Weather in June

Summer arrives in full swing in June. High temperatures of 17°C (62.6°F) and lows of 8°C (46.4°F) reign over Sligo, accompanied by persistent rainfall measuring 82mm (3.23"). Extended daylight hours present opportunities for extended outdoor activities. Weather in June »

Weather in July

July is the peak of summer in Sligo, with temperatures between 18°C (64.4°F) highs and 10°C (50°F) lows providing the perfect backdrop for summer activities. Ample rainfall meters at about 93mm (3.66"), manifesting in intermittent refreshing showers. Weather in July »

Weather in August

August extends the summer's warmth in Sligo, with temperatures remaining at a constant between 18°C (64.4°F) highs and 10°C (50°F) lows. Rainfall increases to 102mm (4.02"), providing cooler intervals in the ongoing summer warmth. Weather in August »

Weather in September

September is a delightful combination of lingering summer warmth and emerging autumn chill in Sligo. With slight drops in temperatures, the weather maintains a balance between comfort and chill. Although rainfall increases to 104mm (4.09"), it doesn’t diminish the city's charm as it prepares for autumn. Weather in September »

Weather in October

October sees a noticeable shift in Sligo weather, with temperatures falling to highs of 13°C (55.4°F) and lows of 6°C (42.8°F) as autumn sets in earnestly. Rainfall increases to a substantial 134mm (5.28"), indicating the start of the city's rainier season. Weather in October »

Weather in November

November brings a sharper chill to Sligo as winter draws near. The high temperature averages around 9°C (48.2°F) and the low around 3°C (37.4°F), signaling residents to brace for colder days ahead. The rainfall of 128mm (5.04") further consolidates the November chill. Weather in November »

Weather in December

December in Sligo is characterized by the arrival of winter in full force. With temperatures stretching from 8°C (46.4°F) high readings down to 2°C (35.6°F) lows, outdoor activities take a backseat. Torrents of rain measuring 126mm (4.96") add to the winter palette with frequent showers. Weather in December »