The best times to visit Llangollen for ideal weather are

June 18th to September 9th

based on average temperature and humidity from NOAA (the National Oceanic and Atmospheric Administration). Read below for more weather and travel details.



Other Llangollen Travel Info

Weather in Llangollen


Average temperatures in Llangollen vary somewhat. Considering humidity, temperatures feel cold for most of the year with a chance of rain or snow throughout most of the year. The area is less temperate than some — in the 13th percentile for pleasant weather — compared to tourist destinations worldwide. Weeks with ideal weather are listed above. If you’re looking for the very warmest time to visit Llangollen, the hottest months are July, August, and then June. See average monthly temperatures below. The warmest time of year is generally mid July where highs are regularly around 67.9°F (19.9°C) with temperatures rarely dropping below 51.2°F (10.7°C) at night.

Llangollen Temperatures (Fahrenheit)


Llangollen Temperatures (Celsius)


“Feels-Like” Temperatures

The way we experience weather isn’t all about temperature. Higher temperatures affect us much more at higher humidity, and colder temperatures feel piercing with high winds. Our perceived temperatures factor in humidity and wind chill to better represent how hot or cold the day feels to a person.

Llangollen Perceived Temperature (F)


Llangollen Perceived Temperature (C)



Average Llangollen Temperatures by Month

Daily highs (averaged for the month) usually give the best indication of the weather. A significantly lower mean and low generally just means it gets colder at night.

Show Fahrenheit

Month Avg. High (°F) Avg. Mean (°F) Avg. Low (°F)
Jan 45.1 40.5 35.3
Feb 44.3 39.3 34
Mar 49.2 41.6 33.8
Apr 53 44.7 35.9
May 57.4 50.1 42.3
Jun 63.2 55.1 46
Jul 66.8 58.7 49.5
Aug 64.7 57.6 50.1
Sep 62 53.9 45.4
Oct 57 51 43.9
Nov 50.9 45.5 39
Dec 47.9 43.6 38.1

Show Celsius

Month Avg. High (°C) Avg. Mean (°C) Avg. Low (°C)
Jan 7.3 4.7 1.8
Feb 6.8 4.1 1.1
Mar 9.6 5.3 1
Apr 11.7 7.1 2.2
May 14.1 10.1 5.7
Jun 17.3 12.8 7.8
Jul 19.3 14.8 9.7
Aug 18.2 14.2 10.1
Sep 16.7 12.2 7.4
Oct 13.9 10.6 6.6
Nov 10.5 7.5 3.9
Dec 8.8 6.4 3.4



Precipitation (Rain or Snow)

If dry weather is what you’re after, the months with the lowest chance of significant precipitation in Llangollen are July, June, and then September. Note that we define “significant precipitation” as .1 inches or more in this section. The lowest chance of rain or snow occurs around late June. For example, on the week of June 25th there is 1 day of precipitation on average. By contrast, it’s most likely to rain or snow in late December with an average of 5 days of significant precipitation the week of December 24th.

When can you find snow in Llangollen? Weather stations report no annual snow. Please note that a value of 0 for snow in the graph below may either mean there was no snow, or that snow is unreported.

Chance of Precipitation

The graph below shows the % chance of rainy and snowy days in Llangollen.

Days with precipitation

Snow on the Ground

The graph below shows the average snow on the ground in Llangollen (in).

Snow depth

Average Rain and Snow by Month

Show Inches

Month Daily Chance of Rain Average Snow Depth (in) Total Precipitation (in)
Jan 50% 0 6.2
Feb 35% 0 4.8
Mar 27% 0 2.8
Apr 27% 0 2.5
May 36% 0 3.9
Jun 23% 0 2.8
Jul 21% 0 2.3
Aug 32% 0 3.2
Sep 24% 0 2.5
Oct 37% 0 4.3
Nov 45% 0 5.1
Dec 59% 0 9.4

Show Centimeters

Month Daily Chance of Rain Average Snow Depth (cm) Total Precipitation (cm)
Jan 50 0 15.7
Feb 35 0 12.2
Mar 27 0 7.1
Apr 27 0 6.4
May 36 0 9.9
Jun 23 0 7.1
Jul 21 0 5.8
Aug 32 0 8.1
Sep 24 0 6.4
Oct 37 0 10.9
Nov 45 0 13
Dec 59 0 23.9


Humidity and Wind

Llangollen has some extremely humid months, and high humidity throughout the year. The least humid month is April (71.8% relative humidity), and the most humid month is November (83.3%).

Wind in Llangollen is usually calm. The windiest month is December, followed by January and February. December’s average wind speed of around 9.4 knots (10.9 MPH or 17.5 KPH) is considered “a gentle breeze.” Maximum sustained winds (the highest speed for the day lasting more than a few moments) are at their highest in early January where average top sustained speeds reach 18.7 knots, which is considered a fresh breeze.

Relative Humidity (%)

The graph below shows the average % humidity by month in Llangollen.

Avg. Relative Humidity


The graph below shows wind speed (max and average) in knots.

Max Sustained Wind
Average Daily Wind

Average Wind Speeds

Show Wind Speeds

All wind speeds are in knots. 1 knot = 1.15 MPH or 1.85 KPH.

Month Avg. Wind Avg. Wind Feel Sustained High Wind High Wind Feel
Jan 8.3 Gentle breeze 14.6 Significant breeze
Feb 7.1 Gentle breeze 13 Significant breeze
Mar 6.6 Light breeze 12.3 Significant breeze
Apr 6.1 Light breeze 11.8 Significant breeze
May 6.5 Light breeze 11.8 Significant breeze
Jun 5.6 Light breeze 10.7 Gentle breeze
Jul 5.1 Light breeze 10.1 Significant breeze
Aug 5.4 Light breeze 10.6 Gentle breeze
Sep 5.2 Light breeze 10.3 Significant breeze
Oct 5.8 Light breeze 11.2 Significant breeze
Nov 6 Light breeze 11.8 Significant breeze
Dec 9.4 Gentle breeze 16 Significant breeze

Show Relative Humidity by Month

Month Avg. Relative Humidity
Jan 80.2%
Feb 79.9%
Mar 72.9%
Apr 71.8%
May 72.3%
Jun 73.1%
Jul 74.3%
Aug 77.5%
Sep 79.5%
Oct 81.3%
Nov 83.3%
Dec 81.1%


Is it Safe to Travel to Llangollen?

Our best data indicates this area is somewhat safe. As of Oct 07, 2019 there are travel warnings for the United Kingdom; exercise a high degree of caution. Check this page for any recent changes or regions to avoid: Travel Advice and Advisories. This advisory was last updated on Sep 06, 2019.


The Busiest and Least Crowded Months

The busiest month for tourism in Llangollen, the United Kingdom is January, followed by June and July. Prices for hotels and flights will be most expensive during these months, though you can save if you purchase well in advance. Tourists are unlikely to visit Llangollen in December. Those willing to visit at these times will likely find it the least expensive month.

Estimated Tourism by Month


Most Popular Months to Visit

Tourists Seeking Accommodations

Tourism graph is based on Google searches for services used by tourists relative to the rest of the year. Tourism data for this area is somewhat extrapolated based on nearby areas. Displayed data is calculated relative to the peak, so a score of 59.1 in December means 59.1% of the tourists vs. January.



Overall Llangollen Travel Experience by Season

Spring (March through May)

Humidity and temperatures combine to make this season feel moderately cold. Highs range from 61.5°F (16.4°C) and 46.8°F (8.2°C) with warmer temperatures in the later months. Rain is somewhat common with 8 to 11 days of significant precipitation per month. Spring is the slowest for tourism, which makes it a good time for those looking for deals.

Summer (June through August)

The middle-year months have comfortably cool weather with high temperatures that are comfortable. These months see the least precipitation with 6 to 10 days of precipitation per month. June – August is the busiest season for tourism in Llangollen, so lodging and other accommodations may cost more than usual.

Fall (September through November)

Fall daily highs range from 63.9°F (17.7°C) and 48.1°F (8.9°C), which will feel chilly given the humidity and wind. It rains or snows a good amount: 7 to 13 days per month. Tourism is fairly slow during these months due to the weather, so hotels may be lower priced.

Winter (December through February)

Weather is too cold this time of year in Llangollen to be enjoyable for warm weather travelers. The average high during this season is between 49.8°F (9.9°C) and 41.8°F (5.4°C). On average, it rains or snows a very great amount: 10 to 18 times per month. These times of year are the second busiest with tourists.


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