Our verdict
The best time to visit Isle of Arran is June-September
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.
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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:
| Season | Months |
|---|---|
| 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:
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
of pure sunshine
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.
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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
of pure sunshine
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.
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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
of pure sunshine
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.
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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
of pure sunshine
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.
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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
of pure sunshine
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.
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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
of pure sunshine
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.
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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
of pure sunshine
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.
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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
of pure sunshine
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.
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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
of pure sunshine
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
of pure sunshine
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.
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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
of pure sunshine
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.
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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
of pure sunshine
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.
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