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Best Time for Argyll, Mull & Iona
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Sweet spot: April, May, June. Computed from NASA POWER climate normals across the route's overnight towns, balancing temperature, rainfall and daylight.
💡 Good to know
- Buy tickets ahead for the Fionnphort–Iona ferry. Tickets do not reserve a place on a particular sailing; check the latest timetable and service updates before travel.
- Winter ferries thin out and Iona's abbey services echo in an empty nave — atmospheric, but build slack around the weather.
| Month | Low | High | Rain | Daylight | |
|---|---|---|---|---|---|
| January | 4.2°C | 6.7°C | 182 mm | 7.2 h | 💨 |
| February | 3.7°C | 6.4°C | 131 mm | 9.1 h | 💨 |
| March | 4.1°C | 7.3°C | 122 mm | 11.4 h | 💨 |
| April | 5.6°C | 9.5°C | 86 mm | 13.9 h | |
| May | 7.8°C | 12.0°C | 104 mm | 16.1 h | |
| June | 10.4°C | 14.2°C | 107 mm | 17.4 h | |
| July | 11.9°C | 15.6°C | 123 mm | 16.9 h | |
| August | 12.0°C | 15.5°C | 146 mm | 14.9 h | |
| September | 10.9°C | 14.2°C | 135 mm | 12.4 h | |
| October | 8.9°C | 11.8°C | 174 mm | 10.0 h | |
| November | 6.6°C | 9.2°C | 168 mm | 7.8 h | 💨 |
| December | 4.9°C | 7.4°C | 181 mm | 6.6 h | 💨 |