July Weather in Portstewart, United Kingdom

Last updated: March 17, 2025

July in Portstewart, United Kingdom presents a moderate and often overcast climate, with maximum temperatures reaching 19°C (67°F) and a comfortable average of 14°C (57°F). Visitors can expect cooler evenings, as minimum temperatures dip to 11°C (52°F). Throughout the month, precipitation is frequent, with about 110 mm (4.3 in) falling over 17 days, contributing to a humidity level of 86%. This combination of mild temperatures and regular rain enhances the lush, green landscapes typical of this charming coastal town, making it a unique destination for those seeking a refreshing summer getaway.

July Temperature in Portstewart

In July, Portstewart enjoys a mild embrace as temperatures rise, with minimums around 11°C (52°F) and a comfortable average of 14°C (57°F). This month marks a delightful peak, as the maximum temperature reaches 19°C (67°F), making it one of the warmest periods of the year. Following the gradual warming trends seen in the preceding months, from the cool 7°C (45°F) in January to a refreshing 12°C (54°F) in June, July stands out as a time for outdoor activities and coastal adventures. As summer unfolds, the pleasant temperatures offer an inviting atmosphere, perfect for enjoying Portstewart's scenic beaches and vibrant local culture.

July Weather in Portstewart: Daily Temperature Highs, Lows, and Averages

The chart illustrates July temperature patterns in Portstewart, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends.
JanFebMarAprMayJunJulAugSepOctNovDec454444465054575856534946
Data source: Temperature data for Portstewart generated using information from the Copernicus Climate Change Service.
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The average of daily temperatures (24 hours) calculated across all days in the month.

July Precipitation in Portstewart

In July, Portstewart experiences a significant amount of rainfall, with an average precipitation of 110 mm (4.3 in) over 17 rainy days. This marks a slight increase from June's 105 mm, continuing the trend of consistent summer showers typical for this coastal town. As the summer progresses, rainfall tends to escalate, with August often delivering even heavier downpours, averaging 146 mm (5.7 in) over 20 days. Despite the plentiful rain, July's precipitation remains relatively stable compared to the wetter months that follow in autumn. This pattern highlights how Portstewart's climate combines both warm summer months and the inevitable grey skies that characterize the region later in the year.

July Precipitation Trends in Portstewart

The chart displays monthly precipitation patterns in Portstewart, with values for each month alongside July's data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how July's conditions compare to those of other months.
JanFebMarAprMayJunJulAugSepOctNovDec1091321125573105110146117161156166
Data source: Precipitation data for July generated using information from the Copernicus Climate Change Service.
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July Humidity in Portstewart

In July, Portstewart experiences a slight increase in humidity, with levels reaching 86%, mirroring the sticky conditions of the previous month. This summer month maintains the trend of relative stability in humidity seen since spring, where levels hovered around 82% to 86%. July's humidity aligns with the overall summer average, suggesting that as the days heat up, the air retains its moisture. Interestingly, this pattern continues into August, suggesting that residents can expect similar sultry weather throughout the peak summer months. Overall, the 82% to 88% range of the warmer months contrasts markedly with the more humid 89% to 90% seen in the fall and winter, highlighting the seasonal shifts that characterize the climate in this charming coastal town.

July Average Humidity in Portstewart

This chart illustrates the average monthly humidity levels in Portstewart, with July's data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, allowing you to see how July's humidity levels compare to other months.
JanFebMarAprMayJunJulAugSepOctNovDec87%86%86%85%82%84%86%86%88%89%90%87%
Data source: Humidity data for July generated using information from the Copernicus Climate Change Service.

July UV Index in Portstewart

In July, Portstewart experiences one of its peaks in UV exposure, with a UV Index of 8, categorizing it as very high. This means sun-seekers need to be especially cautious, as the burn time decreases significantly to just 15 minutes. This trend follows June's similar index, highlighting a period of heightened sun intensity during the summer months. As temperatures rise and outdoor activities increase, it's crucial to protect your skin and stay aware of UV levels. For more details on managing sun exposure in this picturesque coastal town, visit Portstewart UV Index.

Maximum UV Index Levels in Portstewart for July

The chart shows the monthly maximum UV Index (UVI) for Portstewart in July, representing the highest UV radiation level. The UVI measures the intensity of ultraviolet radiation from the sun, indicating the potential risk of sunburn and UV-related health issues.
JanFebMarAprMayJunJulAugSepOctNovDec123568865321
Data source: Portstewart July UVI data generated using information from the Copernicus Climate Change Service.

UV Risk Categories

  •  Extreme (11+): Avoid the sun, stay in shade.
  •  Very High (8-10): Limit sun exposure.
  •  High (6-7): Use SPF 30+ and protective clothing.
  •  Moderate (3-5): Midday shade recommended.
  •  Low (0-2): No protection needed.

July Sunshine in Portstewart

In July, Portstewart basks in the glow of approximately 404 hours of bright sunshine, marking it as one of the sunniest months of the year. Following the trends established in previous months, July shows a slight dip compared to the peak of 405 hours in May, yet it still boasts a vibrant array of sun-soaked days. As summer reaches its zenith, the town transitions from June’s 389 hours to enjoy long, sun-filled afternoons that invite residents and visitors alike to revel in the scenic beauty of the coast. This consistent shine not only highlights the warmth of summer but also sets the stage for the slightly less sunny months that follow, with August still retaining a generous 357 hours before the autumn days begin to close in.

Monthly Sunshine Duration in Portstewart: July Highlighted

The July sunshine duration represents the total number of hours Portstewart experiences direct sunlight during the month of July, excluding cloudy or obstructed periods. This chart compares the sunshine duration of July with the other months of the year.
JanFebMarAprMayJunJulAugSepOctNovDec72h146h207h319h405h389h404h357h283h224h117h81h
Data source: Portstewart July Sunshine duration data generated using information from the Copernicus Climate Change Service.

Chance of Sun in Portstewart During July

In Portstewart, United Kingdom, July offers a moderate likelihood of sunny days, with a 24% chance of sunshine. While summer is typically associated with brighter weather, the chance of sun in July is relatively low compared to neighboring months, notably falling short of April's 43% peak and May's 36%. The month hovers closely to the sunny probabilities seen in both January and February (23% and 25%, respectively), indicating that while it is summer, locals and visitors alike shouldn't rely solely on the sun for their outdoor plans. Interestingly, as we transition from June's 22%, July appears to maintain a consistent—though unremarkable—forecast for sunshine, suggesting that Portstewart's charm lies not only in clear skies but also in its picturesque coastal landscapes, even when the sun plays hide and seek.

Percentage of Sunny Days in July in Portstewart

The chart illustrates the percentage of sunny days in Portstewart throughout the year, with July highlighted. It highlights the variation in sunshine across each month and provides an overview of the typical frequency of sunny days, offering insights into how often Portstewart experiences clear skies throughout the year.
JanFebMarAprMayJunJulAugSepOctNovDec23%25%15%43%36%22%24%20%23%16%16%14%
Data source: Portstewart July chance of sun data, generated using information from the Copernicus Climate Change Service.

Daylight Hours in Portstewart in July

In July, Portstewart, United Kingdom, enjoys a generous 16 hours of daylight, making it one of the sunniest months of the year. This follows the peak of summer in June, when daylight reaches an impressive 17 hours. As the year progresses, daylight gradually diminishes, tapering down to 14 hours in August and continuing the downward trend into autumn. This seasonal shift highlights the contrast between the long, vibrant days of midsummer and the shorter, cozier days that follow. Overall, July serves as a delightful midpoint, capturing the essence of summer before the gradual encroachment of the autumn months.

Average Daylight Hours in Portstewart for July

The chart illustrates the variation in daylight duration in Portstewart throughout the year, with July highlighted. It shows the monthly changes in daylight hours, calculated by summing the hours between sunrise and sunset.
JanFebMarAprMayJunJulAugSepOctNovDec7h 49m9h 40m11h 53m14h 10m16h 11m17h 17m16h 41m14h 51m12h 39m10h 24m8h 21m7h 13m
Data source: Portstewart daylight hours, calculated by summing the hours between sunrise and sunset for each day.

July Winds in Portstewart

In July, Portstewart experiences its most tranquil winds of the year, with an average wind speed of 3.8 m/s (8 mph), making it the calmest month in terms of breezes. This marked decrease follows the milder winds of early summer, which hover around 5.7 m/s (13 mph) in June. As the summer progresses into August, the winds pick up slightly to 4.5 m/s (10 mph), indicating a gentle return to the breezier conditions typical of earlier months. Overall, July stands out as a serene interlude amidst the typically varied wind patterns, inviting visitors to enjoy the calmness of the seaside without the whip of strong gusts that characterize other times of the year.

Average July Wind Speed in Portstewart

The chart displays monthly wind speed patterns in Portstewart, with values for each month shown alongside July's data, which is highlighted for easy comparison. It illustrates the average wind speed, offering insights into how July's wind conditions compare to the rest of the year.
JanFebMarAprMayJunJulAugSepOctNovDec7.810.57.55.96.25.73.8 m/s4.55.57.79.38.3
Data source: Portstewart July wind data, generated using information from the Copernicus Climate Change Service.

How July Weather in Portstewart Compares to Other Months

The weather in Portstewart changes throughout the year, offering a unique experience in each season. Below is a month-by-month comparison of July's weather with other months, highlighting differences in temperature, precipitation, and other key factors. Click on each section to discover seasonal trends in Portstewart and find detailed weather information for every month.

In comparing the weather between July and January, July enjoys milder temperatures, with averages ranging from 11°C (52°F) to a maximum of 19°C (67°F), while January's temperatures are cooler, averaging between 2°C (36°F) and 13°C (56°F). Both months experience similar levels of precipitation, approximately 110 mm (4.3 in) across 17 days, but July tends to feel more humid at 86%, compared to January's 87%. For a closer look at January conditions specifically, you can refer to this link: Portstewart weather in January.

When comparing the weather in July and February, a clear difference in temperature stands out. July enjoys milder temperatures, with averages around 14°C (57°F) and maximums reaching up to 19°C (67°F), while February starts at a chillier average of 7°C (44°F) and peaks at only 12°C (54°F). Precipitation levels are fairly similar, with July receiving 110 mm (4.3 in) over 17 days and February a bit higher at 132 mm (5.2 in) over 18 days. Both months have the same humidity level of 86%, contributing to a damp atmosphere year-round. For more detailed weather insights, you can check Portstewart weather in February.

In comparing the weather conditions of July and March, it’s clear that July experiences significantly milder temperatures, with an average of 14°C (57°F) and a maximum of 19°C (67°F), compared to March's cooler average of 7°C (45°F) and maximum of 12°C (54°F). Both months have similar levels of precipitation, with July recording 110 mm (4.3 in) over 17 days and March slightly higher with 112 mm (4.4 in) over 18 days, indicating that both months can be quite wet. Humidity remains constant at 86% for both months, contributing to a persistent dampness in the air. For more detailed information about March weather specifically, you can refer to Portstewart weather in March.

When comparing the weather in July and April, notable differences emerge in temperature, precipitation, and general conditions. In July, temperatures are significantly warmer, ranging from a minimum of 11°C (52°F) to a maximum of 19°C (67°F), while April is much cooler, with temperatures averaging between 2°C (36°F) and 13°C (56°F). Additionally, July experiences more precipitation, totaling 110 mm (4.3 in) over 17 days, compared to April's 55 mm (2.2 in) across 12 days. Humidity levels remain fairly similar, with July at 86% and April at 85%. This contrast highlights the shift from the cooler, drier spring weather in April to the warmer, more humid summer conditions in July. For more detailed insights about April weather, you can visit Portstewart weather in April.

In comparing the weather between July and May, July is noticeably warmer with an average temperature of 14°C (57°F) compared to May’s cooler average of 10°C (50°F). July experiences higher maximum temperatures, reaching up to 19°C (67°F), whereas May's highest temperature is 16°C (61°F). Additionally, July sees more precipitation, with a total of 110 mm (4.3 in) over 17 days, compared to May's 72 mm (2.9 in) over 13 days. Humidity levels are also higher in July at 86%, compared to 82% in May. For more specific details about May's weather, you can check Portstewart weather in May.

In comparing the weather between June and July, July tends to be slightly warmer with average temperatures ranging from a minimum of 11°C (52°F) to a maximum of 19°C (67°F), while June has lower averages with temperatures ranging from 8°C (47°F) to 17°C (62°F). Both months experience similar levels of precipitation, with July recording 110 mm (4.3 in) and June slightly lower at 105 mm (4.1 in), over 17 rainy days in each month. Additionally, humidity in July is slightly higher at 86%, compared to June's 84%. For more detailed information, you can visit Portstewart weather in June.

In comparing the weather between July and August, both months exhibit relatively similar temperatures, with July experiencing a maximum of 19°C (67°F) and August slightly cooler at 18°C (66°F). However, August sees an increase in precipitation, totaling 146 mm (5.7 in) over 20 days, compared to July's 110 mm (4.3 in) over 17 days. Humidity remains constant at 86% for both months, creating a consistently moist atmosphere. For more detailed information regarding the weather conditions in August, you can visit Portstewart weather in August.

In comparing the weather between July and September, July features slightly warmer temperatures with a minimum of 11°C (52°F) and a maximum of 19°C (67°F), while September experiences cooler highs of 17°C (64°F). Both months have an average temperature of 14°C (57°F), but September tends to be more rainy, with 117 mm (4.6 in) of precipitation over 20 days, compared to July's 110 mm (4.3 in) over 17 days. Additionally, humidity levels are higher in September at 88%, compared to July's 86%. For more details, you can check Portstewart weather in September.

July and October feature distinct weather patterns, with July generally being warmer and sunnier, and October notably cooler and wetter. In July, temperatures range from a minimum of 11°C (52°F) to a maximum of 19°C (67°F), while in October, these figures drop to a minimum of 5°C (42°F) and a maximum of 16°C (62°F). Precipitation is also higher in October, with 161 mm (6.3 in) falling over 24 days compared to July's 110 mm (4.3 in) over 17 days. Additionally, humidity levels are slightly elevated in October at 89%, compared to July's 86%. For more detailed insights on October weather, visit Portstewart weather in October.

When comparing the weather in July and November, notable differences emerge. July typically sees milder temperatures, with a minimum of 11°C (52°F) and an average of 14°C (57°F), peaking at 19°C (67°F). In contrast, November experiences cooler conditions, with temperatures ranging from a minimum of 4°C (40°F) to an average of 9°C (49°F) and a maximum of 14°C (58°F). Precipitation is also more frequent in November, accumulating 156 mm (6.2 in) over 23 days compared to July's 110 mm (4.3 in) over 17 days. Additionally, humidity levels are slightly higher in November at 90%, compared to July's 86%. For more information on November weather, visit Portstewart weather in November.

The weather in July and December presents a stark contrast in temperature and precipitation patterns. In July, temperatures range from a mild 11°C (52°F) to a warm 19°C (67°F) on average, with a total of 110 mm (4.3 in) of rain over approximately 17 days. In December, however, the temperature drops significantly, with lows of 2°C (35°F) and highs peaking at 12°C (54°F), while precipitation increases to 166 mm (6.5 in) over 23 days. Both months share the same humidity level of 86%, but the overall feel is quite different, reflecting the chill of winter in contrast to the summer warmth. For more specific details about the weather in December, check out Portstewart weather in December.

Compare Portstewart's Climate with Cities Worldwide

Conclusion: What to Expect From July Weather in Portstewart

In July, Portstewart experiences a delightful yet unpredictable climate, marked by a blend of warmth and humidity that sets it apart from other months. With average temperatures hovering around a comfortable 14°C and occasional peaks at 19°C, this coastal town invites outdoor adventures, though visitors should be prepared for the frequent rain, as July sees around 17 days of precipitation. The high humidity of 86% adds a touch of mugginess, making it essential to embrace both sun and shower. For those intrigued by the nuances of weather patterns in this picturesque location, delve deeper into the details by visiting Portstewart Climate.