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Best time to visit the Isle of Arran, Scotland

Our verdict

The best time to visit Isle of Arran is June-September

Based on a number of criteria such as the weather conditions, cost of flights and hotels, peak travel seasons and much more, June-September is the best time to go to Isle of Arran.

During the warmer months, temperatures in Isle of Arran can rise to a maximum of 17℃ (63℉). The weather at night in the winter can get down to temperatures as low as 2℃ (36℉).

If you want to get the most out of your time visiting Isle of Arran, or you’re just afraid of the dark, the days in June are usually the longest between sunrise and sunset. October sees the most amount of rain in a month if you’re ok with chancing getting drenched, so if you’re looking to stay dry, visit in April instead.

Continue reading to find out loads more about when to travel to Isle of Arran, then use the handy tools below to search for the best flight and hotel options that are right for you.

Warmest month

July

Least rainfall

April

Most daylight

June

Isle of Arran seasons

Before you continue, it’s important to know when the seasons are in Isle of Arran as they might be different to yours depending on where in the world you’re travelling from. Isle of Arran is in the Northern Hemisphere, so the seasons fall during these months:

SeasonMonths
Summer June to August
Autumn/fall September to November
Winter December to February
Spring March to May

Average temperatures in Isle of Arran

If the temperature is a big factor for you to help you decide when to visit, the chart below shows the average minimum and maximum temperatures in Isle of Arran for each month side-by-side so you can easily see the difference in weather throughout the year. To see the temperatures in both Celsius (°C) and Fahrenheit (°F), hover or tap the shaded boxes on the graph.

Isle of Arran climate by month

If you already have a rough idea about which months you might want to travel, the section below shows a detailed breakdown of the climate in Isle of Arran for each month so you can see if it all suits your wants and needs. Scroll down, or use the quick menu below to jump to your preferred month.

Jump to:

JAN
FEB
MAR
APR
MAY
JUN
JUL
AUG
SEP
OCT
NOV
DEC

Isle of Arran in January

  • Average temperature: 6℃ (43℉)
  • Average high temperature: 7℃ (45℉)
  • Average low temperature: 5℃ (41℉)
  • Average humidity: 81%
  • Average sunny days: 7 days
  • Average rainfall: 31mm (1") over 20 days
  • Average snow days: 2 days
7 days
of pure sunshine
20 days
of showers or rain

What to pack: If you’re heading to Isle of Arran in January, make sure you pack a warm jacket or coat.


Isle of Arran in February

  • Average temperature: 6℃ (42℉)
  • Average high temperature: 7℃ (44℉)
  • Average low temperature: 5℃ (40℉)
  • Average humidity: 81%
  • Average sunny days: 9 days
  • Average rainfall: 34mm (1") over 14 days
  • Average snow days: 2 days
9 days
of pure sunshine
14 days
of showers or rain

What to pack: If you’re heading to Isle of Arran in February, make sure you pack a thick snow/winter jacket, thermals and some extra layers as it's always very cold.


Isle of Arran in March

  • Average temperature: 6℃ (44℉)
  • Average high temperature: 8℃ (46℉)
  • Average low temperature: 5℃ (41℉)
  • Average humidity: 81%
  • Average sunny days: 11 days
  • Average rainfall: 26mm (1") over 16 days
  • Average snow days: 1 days
11 days
of pure sunshine
16 days
of showers or rain

What to pack: If you’re heading to Isle of Arran in March, make sure you pack a warm jacket or coat.


Isle of Arran in April

  • Average temperature: 8℃ (47℉)
  • Average high temperature: 10℃ (49℉)
  • Average low temperature: 7℃ (44℉)
  • Average humidity: 80%
  • Average sunny days: 13 days
  • Average rainfall: 17mm (1") over 13 days
13 days
of pure sunshine
13 days
of showers or rain

What to pack: If you’re heading to Isle of Arran in April, make sure you pack a warm jacket or coat.


Isle of Arran in May

  • Average temperature: 10℃ (50℉)
  • Average high temperature: 12℃ (53℉)
  • Average low temperature: 8℃ (47℉)
  • Average humidity: 81%
  • Average sunny days: 13 days
  • Average rainfall: 20mm (1") over 14 days
13 days
of pure sunshine
14 days
of showers or rain

What to pack: If you’re heading to Isle of Arran in May, make sure you pack a warm jacket or coat.


Isle of Arran in June

  • Average temperature: 13℃ (55℉)
  • Average high temperature: 14℃ (57℉)
  • Average low temperature: 11℃ (52℉)
  • Average humidity: 84%
  • Average sunny days: 13 days
  • Average rainfall: 20mm (1") over 14 days
13 days
of pure sunshine
14 days
of showers or rain

What to pack: If you’re heading to Isle of Arran in June, make sure you pack a warm jacket or coat.


Isle of Arran in July

  • Average temperature: 14℃ (58℉)
  • Average high temperature: 16℃ (60℉)
  • Average low temperature: 13℃ (55℉)
  • Average humidity: 85%
  • Average sunny days: 11 days
  • Average rainfall: 27mm (1") over 15 days
11 days
of pure sunshine
15 days
of showers or rain

What to pack: If you’re heading to Isle of Arran in July, make sure you pack a light jumper or hoodie.


Isle of Arran in August

  • Average temperature: 14℃ (58℉)
  • Average high temperature: 15℃ (60℉)
  • Average low temperature: 13℃ (55℉)
  • Average humidity: 85%
  • Average sunny days: 9 days
  • Average rainfall: 36mm (1") over 18 days
9 days
of pure sunshine
18 days
of showers or rain

What to pack: If you’re heading to Isle of Arran in August, make sure you pack a light jumper or hoodie.


Isle of Arran in September

  • Average temperature: 13℃ (56℉)
  • Average high temperature: 14℃ (58℉)
  • Average low temperature: 12℃ (54℉)
  • Average humidity: 83%
  • Average sunny days: 9 days
  • Average rainfall: 26mm (1") over 16 days
9 days
of pure sunshine
16 days
of showers or rain

What to pack: If you’re heading to Isle of Arran in September, make sure you pack a light jumper or hoodie.

Isle of Arran in October

  • Average temperature: 11℃ (52℉)
  • Average high temperature: 12℃ (54℉)
  • Average low temperature: 10℃ (50℉)
  • Average humidity: 82%
  • Average sunny days: 9 days
  • Average rainfall: 45mm (2") over 19 days
9 days
of pure sunshine
19 days
of showers or rain

What to pack: If you’re heading to Isle of Arran in October, make sure you pack a warm jacket or coat.


Isle of Arran in November

  • Average temperature: 9℃ (48℉)
  • Average high temperature: 10℃ (49℉)
  • Average low temperature: 8℃ (46℉)
  • Average humidity: 80%
  • Average sunny days: 8 days
  • Average rainfall: 43mm (2") over 18 days
8 days
of pure sunshine
18 days
of showers or rain

What to pack: If you’re heading to Isle of Arran in November, make sure you pack a warm jacket or coat.


Isle of Arran in December

  • Average temperature: 7℃ (45℉)
  • Average high temperature: 8℃ (47℉)
  • Average low temperature: 6℃ (43℉)
  • Average humidity: 80%
  • Average sunny days: 7 days
  • Average rainfall: 43mm (2") over 20 days
  • Average snow days: 1 days
7 days
of pure sunshine
20 days
of showers or rain

What to pack: If you’re heading to Isle of Arran in December, make sure you pack a warm jacket or coat.


Top FAQs

The hottest month of the year in Isle of Arran is usually July, where temperatures tend to rise to around 16℃ (60℉) in the middle of the day or early afternoon.
The month with the least amount of rain in Isle of Arran is generally around April. The dry season often coincides with cooler weather, so you should check the temperatures in April first to make sure it’s still a good time to go.
The rainiest time of year in Isle of Arran is generally around October, although the wetter season can sometimes extend a few months either side of October too.
If you want to get the most out of your time visiting Isle of Arran, or if you're just afraid of the dark, the days in June are usually the longest between sunrise and sunset.

Isle of Arran map