The best times to visit Isle of Arran for ideal weather are
May 7th 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.
Isle of Arran Travel Guide
Other Isle of Arran Travel Info
Weather in Isle of Arran
Average temperatures in Isle of Arran vary somewhat. Considering humidity, temperatures feel cold for about half of the year and otherwise nice with a very low chance of rain or snow throughout the year. The area is more temperate than most — in the 63rd 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 Isle of Arran, the hottest months are July, August, and then June. See average monthly temperatures below. The warmest time of year is generally late July where highs are regularly around 66.5°F (19.2°C) with temperatures rarely dropping below 59.2°F (15.1°C) at night.
Isle of Arran Temperatures (Fahrenheit)
Isle of Arran Temperatures (Celsius)
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.
Isle of Arran Perceived Temperature (F)
Isle of Arran Perceived Temperature (C)
Average Isle of Arran 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.
|Month||Avg. High (°F)||Avg. Mean (°F)||Avg. Low (°F)|
|Month||Avg. High (°C)||Avg. Mean (°C)||Avg. Low (°C)|
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 Isle of Arran.
Snow on the Ground
The graph below shows the average snow on the ground in Isle of Arran (in).
Average Rain and Snow by Month
|Month||Daily Chance of Rain||Average Snow Depth (in)||Total Precipitation (in)|
|Month||Daily Chance of Rain||Average Snow Depth (cm)||Total Precipitation (cm)|
Humidity and Wind
Isle of Arran has some very humid months, and above average humidity throughout the year. The least humid month is May (61.1% relative humidity), and the most humid month is November (80.2%).
Wind in Isle of Arran is usually calm. The windiest month is January, followed by March and February. January’s average wind speed of around 9.7 knots (11.2 MPH or 18.1 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 March where average top sustained speeds reach 21.4 knots, which is considered a fresh breeze.
Relative Humidity (%)
The graph below shows the average % humidity by month in Isle of Arran.
The graph below shows wind speed (max and average) in knots.
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||9.7||Gentle breeze||15.1||Significant breeze|
|Feb||6.7||Light breeze||10.5||Gentle breeze|
|Mar||9||Gentle breeze||13.5||Significant breeze|
|Apr||5||Light breeze||8.1||Gentle breeze|
|May||4.3||Light breeze||6.9||Significant breeze|
|Jun||4.5||Light breeze||7.7||Gentle breeze|
|Jul||4.7||Light breeze||7.9||Significant breeze|
|Aug||4.6||Light breeze||8.3||Gentle breeze|
|Sep||4.2||Light breeze||7.6||Significant breeze|
|Oct||5.4||Light breeze||8.7||Gentle breeze|
|Nov||5.8||Light breeze||10||Significant breeze|
|Dec||6.2||Light breeze||10.3||Gentle breeze|
Show Relative Humidity by Month
|Month||Avg. Relative Humidity|
Is it Safe to Travel to Isle of Arran?
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 Isle of Arran, the United Kingdom is July, followed by January and September. 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 Isle of Arran 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
Overall Isle of Arran Travel Experience by Season
Spring (March through May)
Humidity and temperatures combine to make this season feel moderately cold. Highs range from 61.6°F (16.4°C) and 46.2°F (7.9°C) with warmer temperatures in the later months. 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. June – August is the busiest season for tourism in Isle of Arran, so lodging and other accommodations may cost more than usual.
Fall (September through November)
Fall daily highs range from 59.7°F (15.4°C) and 46.7°F (8.2°C), which will feel chilly given the humidity and wind. 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 Isle of Arran to be enjoyable for warm weather travelers. The average high during this season is between 48.9°F (9.4°C) and 40.3°F (4.6°C). These times of year are the second busiest with tourists.