The best times to visit Llangefni for ideal weather are

June 11th to September 16th

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



Other Llangefni Travel Info

Weather in Llangefni


Average temperatures in Llangefni 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 18th 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 Llangefni, the hottest months are July, August, and then September. See average monthly temperatures below. The warmest time of year is generally mid July where highs are regularly around 66.5°F (19.2°C) with temperatures rarely dropping below 52.4°F (11.3°C) at night.

Llangefni Temperatures (Fahrenheit)


Llangefni 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.

Llangefni Perceived Temperature (F)


Llangefni Perceived Temperature (C)



Average Llangefni 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 45.3 40.8 35.1
Feb 45.9 41 35.4
Mar 49.6 42.8 35.7
Apr 54.4 47.1 39.2
May 57.7 51 44.1
Jun 62.7 55.8 48.2
Jul 65.8 59.1 52
Aug 64.6 58.3 51.5
Sep 62.5 55.9 48.3
Oct 57.9 52.6 46.4
Nov 51.7 46.7 40.4
Dec 47.2 43 37.2

Show Celsius

Month Avg. High (°C) Avg. Mean (°C) Avg. Low (°C)
Jan 7.4 4.9 1.7
Feb 7.7 5 1.9
Mar 9.8 6 2.1
Apr 12.4 8.4 4
May 14.3 10.6 6.7
Jun 17.1 13.2 9
Jul 18.8 15.1 11.1
Aug 18.1 14.6 10.8
Sep 16.9 13.3 9.1
Oct 14.4 11.4 8
Nov 10.9 8.2 4.7
Dec 8.4 6.1 2.9



Precipitation (Rain or Snow)

If dry weather is what you’re after, the months with the lowest chance of significant precipitation in Llangefni are June, April, and then March. Note that we define “significant precipitation” as .1 inches or more in this section. The lowest chance of rain or snow occurs around mid June. For example, on the week of June 18th there are no days of precipitation on average. By contrast, it’s most likely to rain or snow in mid December with an average of 4 days of significant precipitation the week of December 17th.

When can you find snow in Llangefni? 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 Llangefni.

Days with precipitation

Snow on the Ground

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

Snow depth

Average Rain and Snow by Month

Show Inches

Month Daily Chance of Rain Average Snow Depth (in) Total Precipitation (in)
Jan 28% 0 2.6
Feb 30% 0 2.9
Mar 21% 0 2.3
Apr 19% 0 1.8
May 25% 0 3.1
Jun 17% 0 2
Jul 27% 0 3.3
Aug 28% 0 3.4
Sep 27% 0 3.2
Oct 31% 0 4
Nov 37% 0 4.2
Dec 42% 0 5

Show Centimeters

Month Daily Chance of Rain Average Snow Depth (cm) Total Precipitation (cm)
Jan 28 0 6.6
Feb 30 0 7.4
Mar 21 0 5.8
Apr 19 0 4.6
May 25 0 7.9
Jun 17 0 5.1
Jul 27 0 8.4
Aug 28 0 8.6
Sep 27 0 8.1
Oct 31 0 10.2
Nov 37 0 10.7
Dec 42 0 12.7


Humidity and Wind

Llangefni has some extremely humid months, and high humidity throughout the year. The least humid month is April (75.2% relative humidity), and the most humid month is January (84.6%).

Wind in Llangefni is usually moderate. The windiest month is December, followed by January and November. December’s average wind speed of around 13 knots (15 MPH or 24.1 KPH) is considered “a moderate breeze.” Maximum sustained winds (the highest speed for the day lasting more than a few moments) are at their highest in late December where average top sustained speeds reach 22.9 knots, which is considered a strong breeze.

Relative Humidity (%)

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

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 12 Significant breeze 18.8 Strong breeze
Feb 11.3 Significant breeze 17.9 Strong breeze
Mar 10.2 Gentle breeze 16.2 Strong breeze
Apr 10.7 Gentle breeze 16.6 Significant breeze
May 11.1 Significant breeze 17.2 Strong breeze
Jun 9.5 Gentle breeze 15.3 Significant breeze
Jul 9.5 Gentle breeze 15.2 Strong breeze
Aug 10.1 Gentle breeze 15.9 Significant breeze
Sep 9.5 Gentle breeze 15.3 Strong breeze
Oct 11.2 Significant breeze 17.7 Strong breeze
Nov 11.5 Significant breeze 18.8 Strong breeze
Dec 13 Significant breeze 20.3 Strong breeze

Show Relative Humidity by Month

Month Avg. Relative Humidity
Jan 84.6%
Feb 84.3%
Mar 78.7%
Apr 75.2%
May 76.3%
Jun 78.2%
Jul 80.8%
Aug 81.9%
Sep 82.5%
Oct 83.8%
Nov 84%
Dec 83%


Is it Safe to Travel to Llangefni?

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 Llangefni, 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 Llangefni 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 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 Llangefni Travel Experience by Season

Spring (March through May)

Humidity and temperatures combine to make this season feel moderately cold. Highs range from 60.4°F (15.8°C) and 47.3°F (8.5°C) with warmer temperatures in the later months. Rain is somewhat common with 6 to 8 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 brisk. These months see moderate precipitation with 5 to 9 days of precipitation per month. June – August is the busiest season for tourism in Llangefni, so lodging and other accommodations may cost more than usual.

Fall (September through November)

Fall daily highs range from 63.4°F (17.4°C) and 47.8°F (8.8°C), which will feel chilly given the humidity and wind. It rains or snows a significant amount: 8 to 11 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 Llangefni to be enjoyable for warm weather travelers. The average high during this season is between 48°F (8.9°C) and 43.9°F (6.6°C). On average, it rains or snows a great amount: 8 to 13 times per month. These times of year are the second busiest with tourists.


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