The best times to visit Alderney for ideal weather are

May 28th to November 4th

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



Other Alderney Travel Info

Weather in Alderney


Average temperatures in Alderney vary somewhat. Considering humidity, temperatures feel cold for about half of the year and otherwise nice with a chance of rain or snow throughout most of the year. The area is less temperate than some — in the 38th 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 Alderney, the hottest months are August, July, and then September. See average monthly temperatures below. The warmest time of year is generally early August where highs are regularly around 68.4°F (20.2°C) with temperatures rarely dropping below 58.7°F (14.8°C) at night.

Alderney Temperatures (Fahrenheit)


Alderney 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.

Alderney Perceived Temperature (F)


Alderney Perceived Temperature (C)



Average Alderney 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 49.1 46.2 42.9
Feb 48.7 45.5 41.8
Mar 50.7 47 43
Apr 54.7 50.1 45.6
May 58.2 53.8 49.8
Jun 62.4 57.8 53.6
Jul 66.2 61.7 57.5
Aug 66.8 62.7 58.8
Sep 65 61.1 56.9
Oct 61.4 57.7 53.5
Nov 55.9 52.7 49.3
Dec 51.3 48.3 44.7

Show Celsius

Month Avg. High (°C) Avg. Mean (°C) Avg. Low (°C)
Jan 9.5 7.9 6.1
Feb 9.3 7.5 5.4
Mar 10.4 8.3 6.1
Apr 12.6 10.1 7.6
May 14.6 12.1 9.9
Jun 16.9 14.3 12
Jul 19 16.5 14.2
Aug 19.3 17.1 14.9
Sep 18.3 16.2 13.8
Oct 16.3 14.3 11.9
Nov 13.3 11.5 9.6
Dec 10.7 9.1 7.1



Precipitation (Rain or Snow)

If dry weather is what you’re after, the months with the lowest chance of significant precipitation in Alderney are April, September, and then July. Note that we define “significant precipitation” as .1 inches or more in this section. The lowest chance of rain or snow occurs around early April. For example, on the week of April 2nd there are no days of precipitation on average. By contrast, it’s most likely to rain or snow in early December with an average of 3 days of significant precipitation the week of December 3rd.

When can you find snow in Alderney? Weather stations report large amounts of snow likely to be deepest around February, especially close to late February and early March. The best time to ski (if at all) in Alderney is often around around February 26th when fresh powder is deepest. 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 Alderney.

Days with precipitation

Snow on the Ground

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

Snow depth

Average Rain and Snow by Month

Show Inches

Month Daily Chance of Rain Average Snow Depth (in) Total Precipitation (in)
Jan 27% 0 2.9
Feb 25% 20.9 2.5
Mar 20% 0 2
Apr 10% 0 1.2
May 17% 0 1.8
Jun 16% 0 1.6
Jul 14% 0 1.4
Aug 21% 0 1.9
Sep 12% 0 1.1
Oct 28% 0 3.1
Nov 36% 0 3.7
Dec 32% 0 3.6

Show Centimeters

Month Daily Chance of Rain Average Snow Depth (cm) Total Precipitation (cm)
Jan 27 0 7.4
Feb 25 53.1 6.4
Mar 20 0 5.1
Apr 10 0 3
May 17 0 4.6
Jun 16 0 4.1
Jul 14 0 3.6
Aug 21 0 4.8
Sep 12 0 2.8
Oct 28 0 7.9
Nov 36 0 9.4
Dec 32 0 9.1


Humidity and Wind

Alderney has some very humid months, and high humidity throughout the year. The least humid month is December (72.2% relative humidity), and the most humid month is June (79.9%).

Wind in Alderney is usually stronger than many places. The windiest month is December, followed by November and January. December’s average wind speed of around 17 knots (19.6 MPH or 31.5 KPH) is considered “a fresh 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 25.3 knots, which is considered a strong breeze.

Relative Humidity (%)

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

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 15.7 Significant breeze 22.8 Very strong breeze
Feb 14.8 Significant breeze 21.3 Strong breeze
Mar 13.6 Significant breeze 19.8 Very strong breeze
Apr 11.6 Significant breeze 17.2 Strong breeze
May 11.7 Significant breeze 17.2 Very strong breeze
Jun 10.7 Gentle breeze 16.1 Significant breeze
Jul 11.1 Significant breeze 16 Very strong breeze
Aug 11.3 Significant breeze 16.3 Significant breeze
Sep 12.4 Significant breeze 17.5 Very strong breeze
Oct 13.9 Significant breeze 19.7 Strong breeze
Nov 16.1 Significant breeze 22.9 Very strong breeze
Dec 17 Strong breeze 23.9 Very strong breeze

Show Relative Humidity by Month

Month Avg. Relative Humidity
Jan 75.3%
Feb 74.7%
Mar 74.5%
Apr 75.9%
May 78.3%
Jun 79.9%
Jul 79.5%
Aug 78.5%
Sep 74.8%
Oct 73.3%
Nov 73.6%
Dec 72.2%


Is it Safe to Travel to Alderney?

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 Alderney, the United Kingdom is July, followed by June and August. 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 Alderney in October. 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 slightly extrapolated based on nearby areas. Displayed data is calculated relative to the peak, so a score of 33.2 in October means 33.2% of the tourists vs. July.



Overall Alderney Travel Experience by Season

Spring (March through May)

Humidity and temperatures combine to make this season feel moderately cold. Highs range from 60.1°F (15.6°C) and 49.3°F (9.6°C) with warmer temperatures in the later months. Rain is somewhat common with 3 to 6 days of significant precipitation per month. Spring is the second busiest for tourism, which makes it a good time for those looking for things to do.

Summer (June through August)

The middle-year months have comfortably cool weather with high temperatures that are comfortable. These months see moderate precipitation with 4 to 6 days of precipitation per month. June – August is the busiest season for tourism in Alderney, so lodging and other accommodations may cost more than usual.

Fall (September through November)

Fall daily highs range from 66°F (18.9°C) and 52.1°F (11.2°C), which will feel comfortable given the humidity and wind. It rains or snows a significant amount: 4 to 11 days per month. Tourism is the slowest during these months due to the weather, so hotels may be affordably priced.

Winter (December through February)

Weather is too cold this time of year in Alderney to be enjoyable for warm weather travelers. The average high during this season is between 52.7°F (11.5°C) and 47.4°F (8.6°C). On average, it rains or snows a fair amount: 7 to 10 times per month. These times of year are fairly slow with tourists.


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