October Weather in Porthmadog, United Kingdom

Last updated: March 17, 2025

October in Porthmadog, United Kingdom, showcases a mild yet unpredictable climate. With maximum temperatures reaching 20°C (68°F) and an average hovering around 11°C (53°F), the chilly evenings drop to a minimum of 1°C (33°F), inviting cozy evenings. The month sees considerable precipitation, totaling 206 mm (8.1 in) over an impressive 22 days, creating a lush landscape, though it also means visitors should be prepared for wet weather. The high humidity at 90% adds a refreshing quality to the air, making October a captivating month in this scenic coastal town.

October Temperature in Porthmadog

As October rolls into Porthmadog, temperatures begin to reflect the transition from the warmth of summer to the chill of winter. With minimums around 1°C (33°F), the month starts off crisp, inviting layers for those venturing outdoors. However, the average temperature of 11°C (53°F) signifies a comfortable coolness, making it a pleasant time for walks along the scenic coastline. The days can still offer warmth, with highs reaching 20°C (68°F), occasionally reminiscent of the summer's last hurrah. This month serves as a gentle reminder of nature's cycle, showcasing a shift towards the cooler temperatures that dominate the colder months ahead.

October Weather in Porthmadog: Daily Temperature Highs, Lows, and Averages

The chart illustrates October temperature patterns in Porthmadog, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends.
JanFebMarAprMayJunJulAugSepOctNovDec424344475257605957524744
Data source: Temperature data for Porthmadog 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.

October Precipitation in Porthmadog

In October, Porthmadog experiences a notable surge in precipitation, with 206 mm (8.1 in) of rainfall recorded, making it one of the rainiest months of the year. This increase is echoed by the heightened number of precipitation days, totaling 22, which adds to the overall atmospheric dampness that characterizes the autumn season. Following a slightly wetter September, October’s rainfall marks a pivotal shift as the region transitions into the colder months. This pattern of elevated precipitation is consistent with the trend observed in previous years, positioning Porthmadog as a prime example of the UK's typical wet autumn climate. Overall, the month serves as a reminder of the dramatic weather shifts that define this picturesque Welsh coastal town.

October Precipitation Trends in Porthmadog

The chart displays monthly precipitation patterns in Porthmadog, with values for each month alongside October's data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how October's conditions compare to those of other months.
JanFebMarAprMayJunJulAugSepOctNovDec1211621526287106105162146206176203
Data source: Precipitation data for October generated using information from the Copernicus Climate Change Service.
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October Humidity in Porthmadog

In October, Porthmadog experiences a notable increase in humidity, reaching 90%—the highest level recorded for the month. This uptick follows a trend of rising humidity levels from September's 85%, suggesting that the onset of autumn brings a return of moisture to the coastal air. As the year progresses, the city generally experiences its most humid months during the fall and winter, with humidity peaking not only in October but also in November at 91%. This pattern reflects the shift from the drier summer months, where humidity dips to as low as 78% in July, creating a clear transition towards the wetter, more humid conditions of late autumn.

October Average Humidity in Porthmadog

This chart illustrates the average monthly humidity levels in Porthmadog, with October's data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, allowing you to see how October's humidity levels compare to other months.
JanFebMarAprMayJunJulAugSepOctNovDec89%88%86%85%79%81%78%79%85%90%91%89%
Data source: Humidity data for October generated using information from the Copernicus Climate Change Service.

October UV Index in Porthmadog

In October, Porthmadog experiences a moderate UV Index of 4, indicating a significant shift from the high levels of summer. As the days shorten and temperatures cool, the burn time decreases to 30 minutes. This marks a gradual decline from the intense UV exposure seen in the earlier months, where June and July peaked at an Index of 8. While October still calls for sun protection, particularly during midday, it provides a gentler reminder of the changing season, inviting residents and visitors to enjoy the outdoors while remaining mindful of UV safety. For more detailed information, check out the Porthmadog UV Index.

Maximum UV Index Levels in Porthmadog for October

The chart shows the monthly maximum UV Index (UVI) for Porthmadog in October, 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.
JanFebMarAprMayJunJulAugSepOctNovDec124578875421
Data source: Porthmadog October 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.

October Sunshine in Porthmadog

As October unfolds in Porthmadog, the town basks in a generous 238 hours of sunshine, marking a delightful transition in the autumn months. This sunny interlude follows a vibrant summer with impressive totals, peaking in July at 421 hours. While October sees a natural decline from the sun-drenched heights of summer, it remains significantly brighter than the gloomy winter months that follow, with November and December witnessing a sharp drop to 126 and 109 hours respectively. The contrast highlights October as a bridge between the warm days of summer and the cooler, darker months ahead, allowing residents and visitors alike to relish the lingering warmth and illuminating beauty that the season has to offer.

Monthly Sunshine Duration in Porthmadog: October Highlighted

The October sunshine duration represents the total number of hours Porthmadog experiences direct sunlight during the month of October, excluding cloudy or obstructed periods. This chart compares the sunshine duration of October with the other months of the year.
JanFebMarAprMayJunJulAugSepOctNovDec93h162h228h335h415h404h421h383h315h238h126h109h
Data source: Porthmadog October Sunshine duration data generated using information from the Copernicus Climate Change Service.

Chance of Sun in Porthmadog During October

In Porthmadog, the likelihood of sunny weather takes a noticeable dip in October, with only a 15% chance of sunshine. This decline marks a significant contrast to the preceding months, particularly April, which boasts a much brighter 46% chance. The trend reveals that while late spring and summer months typically provide more sun, October ushers in the transition to cooler, cloudier weather. As autumn settles in, the sunlight becomes more sporadic, encouraging cozy indoor activities and a picturesque embrace of the season's charm.

Percentage of Sunny Days in October in Porthmadog

The chart illustrates the percentage of sunny days in Porthmadog throughout the year, with October 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 Porthmadog experiences clear skies throughout the year.
JanFebMarAprMayJunJulAugSepOctNovDec20%22%25%46%30%27%36%25%22%16%20%20%
Data source: Porthmadog October chance of sun data, generated using information from the Copernicus Climate Change Service.

Daylight Hours in Porthmadog in October

As the seasons transition in Porthmadog, October brings a noticeable decline in daylight, with an average of 10 hours of sunlight each day. Following the summer months where daylight peaked at 16 hours in June and July, the days gradually shorten as autumn takes hold. After enjoying a generous 14 hours in August and 12 hours in September, October marks a point of significant change, reminding residents and visitors alike that winter is on the horizon. This pattern of diminishing daylight continues into November, dropping further to 8 hours, then tapering to just 7 hours by December, reinforcing the cozy allure of shorter days and the approach of the festive season.

Average Daylight Hours in Porthmadog for October

The chart illustrates the variation in daylight duration in Porthmadog throughout the year, with October highlighted. It shows the monthly changes in daylight hours, calculated by summing the hours between sunrise and sunset.
JanFebMarAprMayJunJulAugSepOctNovDec8h 10m9h 51m11h 54m14h15h 51m16h 50m16h 18m14h 38m12h 36m10h 31m8h 38m7h 37m
Data source: Porthmadog daylight hours, calculated by summing the hours between sunrise and sunset for each day.

October Winds in Porthmadog

As October rolls into Porthmadog, the breeze begins to pick up, with an average wind speed of 6.4 m/s (14 mph), making it one of the more blustery months of the year. This noticeable increase from the softer summer winds reflects a shift in the seasons as autumn sets in, transitioning from the gentle gusts of July and August that hover around 3.2 m/s (7 mph) and 4.4 m/s (10 mph) respectively. As nature prepares for winter, October's winds pave the way for brisk walks along the charming coastline, inviting both locals and visitors to embrace the invigorating atmosphere. With the winds continuing to hold steady in November at 5.5 m/s (12 mph), it’s clear that Porthmadog is gearing up for the playful, yet bracing, weather of the season.

Average October Wind Speed in Porthmadog

The chart displays monthly wind speed patterns in Porthmadog, with values for each month shown alongside October's data, which is highlighted for easy comparison. It illustrates the average wind speed, offering insights into how October's wind conditions compare to the rest of the year.
JanFebMarAprMayJunJulAugSepOctNovDec5.36.65.73.84.74.03.24.43.76.4 m/s5.55.9
Data source: Porthmadog October wind data, generated using information from the Copernicus Climate Change Service.

How October Weather in Porthmadog Compares to Other Months

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

October and January showcase contrasting weather patterns. In October, temperatures range from a cool 1°C (33°F) at night to a comfortable 20°C (68°F) during the day, making it a transitional month. With an average temperature of 11°C (53°F) and significant precipitation of 206 mm (8.1 in) over 22 days, October tends to feel quite damp with a humidity level of 90%. In comparison, January is chillier with minimum temperatures dipping to -1°C (30°F) and a maximum of 13°C (55°F), averaging 6°C (43°F). Although it experiences less rainfall—121 mm (4.8 in) over 16 days—the weather remains humid at 89%. For more detailed insights into January's weather, you can refer to Porthmadog weather in January.

In comparing the weather between October and February, October presents generally milder conditions with average temperatures ranging from 1°C to 20°C (33°F to 68°F), while February experiences cooler temperatures, with averages between -3°C and 15°C (28°F to 60°F). Precipitation in October is more substantial, totaling 206 mm (8.1 in) across 22 days, compared to February's 162 mm (6.4 in) over 19 days. Moreover, humidity levels are slightly higher in October at 90%, compared to 88% in February. For more specifics on February weather, you can refer to Porthmadog weather in February.

When comparing the weather in October and March, October showcases milder temperatures with a range from 1°C (33°F) to a maximum of 20°C (68°F), while March experiences cooler conditions, with temperatures ranging from -5°C (23°F) to 16°C (61°F). October is wetter, receiving 206 mm (8.1 in) of precipitation over 22 days, compared to March's 152 mm (6.0 in) across 19 days. Humidity levels are slightly higher in October at 90%, while March maintains a comfortable humidity of 86%. For a detailed look at the weather in March, you can refer to Porthmadog weather in March.

When comparing October and April weather, October typically showcases a broader temperature range, with averages hovering around 11°C (53°F) and a maximum of 20°C (68°F). In contrast, April presents cooler conditions, with an average temperature of 8°C (47°F) and a high of 19°C (66°F). Additionally, October experiences significantly more precipitation, totaling 206 mm (8.1 in) over 22 days, compared to April's 62 mm (2.4 in) over 12 days. Humidity levels are slightly higher in October at 90% versus April's 84%. For further insights, you can explore Porthmadog weather in April.

In comparing the weather between October and May, we see notable differences in temperature and precipitation. October presents cooler conditions, with temperatures ranging from a minimum of 1°C (33°F) to a maximum of 20°C (68°F) and an average of 11°C (53°F). The month is quite rainy, receiving 206 mm (8.1 in) of precipitation over 22 days, coupled with high humidity at 90%. In contrast, May enjoys slightly warmer temperatures, with a minimum of 2°C (36°F) and typical highs reaching 23°C (73°F), while maintaining an average of 11°C (52°F). Precipitation is significantly lower in May, totaling 87 mm (3.4 in) over just 12 days, and humidity is also more comfortable at 79%. For more detailed insights, check out Porthmadog weather in May.

October weather is characterized by cooler temperatures, with a minimum of 1°C (33°F) and an average of 11°C (53°F), while June is milder, featuring a minimum of 7°C (46°F) and an average of 14°C (57°F). The maximum temperatures in October reach 20°C (68°F), compared to June's higher maximum of 26°C (79°F). Additionally, October experiences significantly more precipitation, averaging 206 mm (8.1 in) over 22 days, while June sees a lower precipitation total of 106 mm (4.2 in) over 16 days. Despite its precipitation, October maintains a higher average humidity of 90%, compared to June's 81%. For more details, check Porthmadog weather in June.

In comparing the weather between October and July, October tends to be much cooler and wetter. The average temperature in October is significantly lower, ranging from a minimum of 1°C (33°F) to a maximum of 20°C (68°F), while July enjoys milder temperatures with a minimum of 9°C (48°F) and a maximum of 25°C (77°F). Additionally, October sees substantially more rainfall, with 206 mm (8.1 in) over approximately 22 days compared to July's 105 mm (4.1 in) spread over 15 days. The humidity is also higher in October at 90%, compared to 78% in July, adding to the feeling of dampness during the fall month. For more detailed information, you can check Porthmadog weather in July.

In comparing the weather between October and August, October presents significantly cooler temperatures, with averages around 11°C (53°F) compared to August’s warmer 15°C (60°F). The maximum temperature in October reaches only 20°C (68°F), while August can soar to 24°C (75°F). Additionally, October experiences a higher level of precipitation, measuring 206 mm (8.1 in) across 22 days, compared to August’s 162 mm (6.4 in) over the same number of days. Humidity also rises in October to a notable 90%, compared to 79% in August. For more detailed information on August weather, check out Porthmadog weather in August.

October weather is characterized by cooler temperatures compared to September, with minimums dropping to 1°C (33°F) and average highs reaching only 20°C (68°F). In contrast, September enjoys warmer conditions, with temperatures ranging from a minimum of 6°C (42°F) to a maximum of 26°C (78°F). Additionally, October experiences significantly higher precipitation, totaling 206 mm (8.1 in) over 22 days, while September records 146 mm (5.7 in) across 18 days. The humidity also increases slightly in October to 90%, compared to 85% in September, making the air feel even damp and chilly. For more details, check out Porthmadog weather in September.

In October, the weather showcases a broader temperature range with minimums around 1°C (33°F), averaging 11°C (53°F), and reaching a maximum of 20°C (68°F). The month is quite wet, experiencing 206 mm (8.1 in) of precipitation over 22 days, coupled with high humidity at 90%. In contrast, November brings cooler temperatures with a slightly lower average of 8°C (48°F), peaking at 14°C (58°F) while still maintaining the same minimum of 1°C. Though November sees less rainfall at 176 mm (6.9 in) over 21 days, humidity remains high at 91%. For a closer look at the weather specifics during November, you can check Porthmadog weather in November.

October and December present contrasting weather patterns. In October, temperatures range from a minimum of 1°C (33°F) to a maximum of 20°C (68°F), with an average of 11°C (53°F) and a high humidity of 90%. The month also experiences significant rainfall, with 206 mm (8.1 in) over 22 days. In contrast, December brings cooler conditions, with temperatures dipping to a minimum of -2°C (29°F) and an average of 7°C (45°F). Although precipitation levels are slightly lower at 203 mm (8.0 in), it occurs on more days—24 in total—accompanied by a marginally lower humidity of 89%. For more detailed information, you can check Porthmadog weather in December.

Compare Porthmadog's Climate with Cities Worldwide

Conclusion: What to Expect From October Weather in Porthmadog

As October graces Porthmadog, the transition to autumn becomes unmistakable, with a marked chill in the air compared to the milder summer months. This period sees a blend of crisp days and an uptick in precipitation, making the town's lush surroundings even more vibrant. With an average temperature hovering around 11°C, October offers a cooler climate that invites cozy indoor activities as well as the beauty of fall foliage. The notable 90% humidity adds to the atmosphere, often shrouding the landscape in mist. Remarkably, rain visits often, with 22 rainy days contributing to a significant 206 mm of precipitation. For those curious about how this weather pattern stacks up seasonally, check out the detailed insights at Porthmadog Climate.