Average daily temperature during the week of 30 June 2025 - 6 July 2025 was 20 °C (68 °F), average minimal (night) temperature was 15 °C (59 °F). Both the daily and night temperatures in Conwy are roughly same as the long-term average, which is around 19 °C (66 °F) and 12 °C (54 °F) respectively. On average, the temperatures during various times of day (in local time) were recorded as: 7am 16 °C (61 °F), 10am 18 °C (64 °F), 1pm 18 °C (64 °F), 4pm 18 °C (64 °F), 7pm 18 °C (64 °F), 10pm 16 °C (61 °F).

During this week: 4 days without rain, 1 day with light rain and 2 days with moderate rain were observed. During the whole week, total of 9 mm (0.35 in) of precipitation was observed, which is below the long term average for Conwy, which is 15 mm (0.59 in). During the daytime (from dawn to dusk), there was 69 % cloud coverage on average.

The wind's speed averaged 4.4 m/s. The atmosferic pressure ranged from 1006 hpa to 1028 hpa. The average air humidity was 79 % in Conwy.

During the daytime (from dawn to dusk), there were in average: 4 hours clear skies, 4 hours partially overcast skies, 9 hours overcast skies and 1.5 hours rainy weather. The sunrise on average occurred at 04:53, and the sunset occurred at 21:45.

Weather overview

Conwy in the United Kingdom boasts a temperate weather pattern with variations in temperature and precipitation throughout the year. Daytime temperatures can range from a cooler 8 °C (46 °F) in the depth of January, warming to a pleasant 20 °C (67 °F) by July. The annual rainfall varies, with June typically being the driest month, experiencing only 12 days of rain, in contrast to November, which is generally the wettest month with 18 days of rain. The chilliest nights occur in February, dipping to 2 °C (36 °F), while the balmy evenings of July reach up to 13 °C (55 °F).

January weather

The lowest daytime temperatures can be seen in January, reaching 8 °C (46 °F) in Conwy. The trend of diminishing rainy days begins, as observed by the count of 17 days, and the amount of rainfall which keeps decreasing to 85 mm (3.33 in). Wind speeds hit their peak at 6 m/s.

February weather

February sees a reduction in rainy days, now reaching 15 days in Conwy, with rainfall amounts also on the decline. The night temperature reaches its lowest point of the year. As the sun hours begin to increase, the measurement stands at 2 hours.

March weather

March marks the onset of increased daytime temperatures, now at 10 °C (49 °F) in Conwy, as well as a rise in night temperatures, now measured at 4 °C (39 °F). A continued decline in rainy days is notable, down to 14 days, whereas the beginning of an increase in rainfall can be seen, documented at 72 mm (2.83 in). The quantity of sunshine hours persists on its upward trajectory, now at 3 hours.

April weather

The rise in April's day temperatures in Conwy continues, noted at 12 °C (54 °F), with night temperatures also gradually increasing to 5 °C (41 °F). The amount of rainfall begins to decrease, now at 59 mm (2.31 in), while the number of rainy days keeps descending to 13 days. An escalation in sun hours is apparent, its figure now 5 hours.

May weather

May sees a continued rise in day temperatures in Conwy, evidenced by a value of 15 °C (60 °F), and night temperatures also follow this upward trend, now at 8 °C (46 °F). The rainfall amount is at its yearly nadir, documented at 57 mm (2.24 in). Sunlight hours are at their peak in May, and the humidity levels drop to their minimum as well.

June weather

The dawn of the tourist season in Conwy is marked by a further increase in daytime temperatures, now at 18 °C (64 °F), while the nighttime temperatures also show an upward trajectory, now at 11 °C (51 °F). Rainfall amounts begin their ascent, but the quantity of rainy days reaches its yearly minimum at 12 days.

July weather

Tourism in Conwy approaches its zenith in July, with peak daytime temperatures hitting 20 °C (67 °F), and nighttime temperatures also reaching their annual maximum. Rainfall amounts continue to swell, reaching 70 mm (2.76 in), while the number of sunny hours begins their gradual decline.

August weather

The start of declining day temperatures comes in August, evidenced by 19 °C (67 °F) in Conwy. The tourist season begins to taper off. An inception of increased rainy days is visible, now at 14 days, while an upward trend in rainfall quantity is noted at 80 mm (3.17 in).

September weather

September's mild descent in daytime temperatures continues in Conwy, registering 17 °C (63 °F), while nighttime temperatures start their seasonal decrease. The start of a decline in sunny hours is observed, now at 4 hours.

October weather

As October arrives in Conwy, the trend of falling day temperatures persists, now at 14 °C (58 °F), and the downward movement of night temperatures continues, measured at 8 °C (47 °F). The onset of the wet season begins with an increase in rainy day numbers, now at 17 days, and a parallel increase in rainfall, tallying 110 mm (4.33 in).

November weather

November in Conwy witnesses a downturn in daytime temperatures, currently at 11 °C (51 °F), with an imminent wet season. The maximum rainfall is reached with an amount of 110 mm (4.33 in), and the number of rainy days also hits their zenith for the year. The dimunition of sunlight hours continues, in harmony with the previous month, now at 2 hours.

December weather

December in Conwy is characterized by the prevailing wet season, with a noticeable drop in daytime temperatures to 8 °C (47 °F). The least amount of sunshine is seen during this month, and the trend of decreasing rainfall begins to emerge, alongside the year's peak humidity levels.

How does January's daytime temperature in Conwy compare to the annual range?

January's daytime temperature in Conwy, at 8 °C (46 °F), sits at the lower end of the year's temperature spectrum.

What characterizes the nighttime climate of Conwy in February?

February nights in Conwy are the coldest of the year, necessitating warm clothing for outdoor excursions.

Is the weather in Conwy starting to warm up in March?

Indeed, March in Conwy shows an uptick in both day and night temperatures, heralding the approach of spring.

During April nights in Conwy, what temperatures can one expect to encounter?

April evenings in Conwy present cooler temperatures, averaging 5 °C (41 °F), so it's advisable to have warm accommodations and attire for the cooler nights.

Does May in Conwy bring a reduction in rain?

Yes, May in Conwy brings a period of lowered rainfall and is amongst the drier points of the year, with only 13 days expected to be wet.

How does the weather fare for tourists visiting Conwy in June?

June weather is conducive to visits in Conwy, with moderate temperatures that are perfect for enjoying the outdoors, although opinions on holiday climates can be subjective.

What daytime temperatures can be expected in Conwy during July?

July in Conwy sees pleasant daytime temperatures, averaging 20 °C (67 °F), ideal for a variety of outdoor activities yet cool enough for comfort if extended sun exposure is planned.

Can August in Conwy be described as the wet season?

Contrary to a wet season, August in Conwy remains relatively dry with rain spread over 14 days of the month.

What is the temperature of the sea in Conwy during September?

The sea temperature in Conwy in September averages 15 °C (60 °F), which may deter all but the most robust swimmers without appropriate thermal protection.

What number of rainy days might one anticipate in Conwy during October?

October in Conwy typically has 17 days with rainfall, signaling the initial phase of the wetter part of the year.

What changes in weather does Conwy experience as winter approaches in November?

As winter nears, Conwy's temperatures dip further, and the highest rainfall of the year dominates, signaling a shift to colder and wetter conditions.

What is the typical daylight experience in Conwy throughout December?

December days in Conwy are marked by a scarcity of sunlight, coupled with the descent in temperatures and a high likelihood of precipitation.