Climate and monthly weather forecast
Sunderland, United Kingdom

Sunderland, a city situated on the northeast coast of England, is categorized under the Cfb classification per the Köppen climate system. This classification represents a marine west coast climate with warm summers. The climate of this region, primarily dominated by the North Sea, is characterized by mild summers and cool winters, with a moderate level of rainfall distributed fairly evenly throughout the year.

Examining more closely, the annual average temperature of the North Sea hovers around 10.9°C (51.6°F), with the highest sea temperatures recorded in July and August 15.1°C (59.2°F) and 15.7°C (60.3°F), respectively; it then gradually declines towards the end of the year. In contrast, the coldest month is March, with the average sea temperature dropping to 6.7°C (44.1°F). Daylight hours also show a significant variation across the year. The longest days illuminate Sunderland for around 17.3 hours in the month of June, while the shortest days provide light for about 7.3 hours in December.

A distinguishing characteristic of Sunderland's weather pattern is the consistency in daylight hours throughout the four seasons. The city does not experience either extended hours of darkness in the winter or extreme long daylight hours in the summer, lending to its moderate climate.

For those seeking to relish the warm and bright ambiance, the best time to visit Sunderland would be from June to August. During these summer months, day temperatures are comfortable, with the North Sea temperature reaching its peak. Alongside, Sunderland receives the highest daylight hours, about 17.3 in June and around 16.7 in July, providing ample time for sightseeing and outdoor activities.

The months from November to February are considered the least appealing for visitors due to the colder sea temperatures, which range from 10.7°C (51.3°F) to 6.7°C (44.1°F), and receding daylight hours, falling from 8.4 hours in November to a mere 7.3 hours by December. These factors can limit outdoor excursions and water-related activities, making it potentially less enjoyable for tourists.

Spring weather in Sunderland, from March to May, is progressively warmer, with May displaying the most pleasant conditions. Sea temperature begins to rise from a chilly 6.7°C (44.1°F) in March to a more inviting 9.8°C (49.6°F) by May. Along with this, daylight hours extend from 11.9 hours in March to 16.2 hours in May, allowing residents and visitors more time to enjoy outdoor activities in the city’s lively spring atmosphere.

Sunderland deems summer, from June to August, as the warmest season with sea temperatures rising steadily from 12.8°C (55°F) in June to a peak of 15.7°C (60.3°F) in August. Daylight hours also reach their maximum during these months, providing up to 17.3 hours of light in June. This combination of warm temperatures and long daylight hours constitutes ideal conditions for beach visits and water sports.

Autumn in Sunderland sees a steady decrease in both sea temperature and daylight hours. September kicks off the season with a sea temperature of 14.8°C (58.6°F), which steadily falls to 10.7°C (51.3°F) by November. Correspondingly, daylight hours reduce from 12.7 hours in September to 8.4 hours in November. Despite the cooler conditions, this season showcases the city’s landscape in a range of beautiful autumn colors.

Winter months in Sunderland, from December to February, are marked by cooler temperatures and reduced daylight hours. During this period, an average sea temperature ranges from 9.1°C (48.4°F) in December to 6.7°C (44.1°F) in February. Daylight hours shrink to their shortest in December, around 7.3 hours, and slowly increase to about 9.7 hours by February. These conditions make winter in Sunderland ideal for those who prefer colder weather and shorter days.

Starting the year, the Sunderland regions experience winter conditions, with chilly sea temperatures and diminishing daylight durations. January is characterized by a colder climate, compared to the relatively warmer times in December. Weather in January »

February sees a slight alteration in Sunderland's climate as the year gradually transitions from winter to spring. There is a moderate drop in the sea temperature in February down to 6.9°C (44.4°F) as compared to January. The lengthening daylight condition prevails in this month with the city receiving more daylight compared to the past month. Weather in February »

The month of March in Sunderland marks the onset of meteorological spring. In keeping with the spring thaw, the city's daylight periods continue to extend. A slight decline in sea temperature takes place at this time to 6.7°C (44.1°F). Weather in March »

April's arrival in Sunderland presents a noticeable shift in the temperature regime. The sea temperature rises considerably from March's values, reaching 8.2°C (46.8°F). On the brighter side, this month experiences longer daylight hours which contribute to the land's warming up process. Weather in April »

With May comes warmer weather as Sunderland establishes into spring. Significant ocean warming happens during this period, leading to a sea temperature of 9.8°C (49.6°F). Accompanied by extended daylight hours, the city basks more in the sun's wholesome rays. Weather in May »

The summertime launch in June brings further warming to Sunderland. Sea temperatures elevate noticeably, rising to a comfortable 12.8°C (55°F). As rays of sunlight saturate the city throughout the longest days of the year, the weather becomes increasingly better for beach activities and water sports. Weather in June »

July in Sunderland witnesses the year's peak in terms of daylight duration and sea temperature. The sea enjoys its warmest reading, escalating to a pleasantly balmy 15.1°C (59.2°F). This facilitates opportunities for sea-related ventures as temperatures become perfect for swimming. Weather in July »

As August rolls in, summertime heat remains robust in Sunderland, but with signs of the imminent fall season. The sea hits its highest temperature, reaching a summery 15.7°C (60.3°F). Despite the reduced daylight duration compared to the span of sunny July, August underpins an endearing balance of extended daylight and warmth before autumn arrives. Weather in August »

September marks the shift towards autumn for Sunderland, accompanied by recognizably cooler days. Significant cooling takes place in the sea, resulting in a temperature drop to 14.8°C (58.6°F). Yet, the moderated daylight duration still nurtures pleasant weather, welcoming outdoor ventures before the sun's rays wane further. Weather in September »

The autumn embrace tightens in Sunderland with October's advent. The sea temperature continues its descent, hitting a cooler 12.7°C (54.9°F). The city's daylight duration decreases notably, leading to significantly shorter days compared to those in September. Weather in October »

Entering the penultimate month of the year, November brings an evident chill to Sunderland. November's sea temperature drops to 10.7°C (51.3°F), a clear sign of the cold season approaching. The city experiences a significant reduction in daylight, a trend which continues in subsequent weeks. Weather in November »

Sunderland closes the year with the advent of December, characterized by even cooler sea temperatures and significantly reduced daylight hours. The sea temperature cools further to 9.1°C (48.4°F) from November’s reading. Greater cold seeps into the region while daylight hours dwindle to mark the arrival of the winter solstice. Weather in December »