Best time to cruise · Best time to go
British Isles cruises in August
Purple heather blooms across the Scottish moors. Edinburgh is in full festival mode, with street performers on the Royal Mile and the Tattoo on the castle esplanade, so arrange tours and tickets early. It’s peak family travel season across Britain and Ireland, and fares reflect it.
- Best time to go
- Avg high 64°F
- 15 hrs daylight
Photo: 瑞丽江的河水, CC BY-SA 4.0, via Wikimedia Commons
British Isles in August: Best time to go
Purple heather blooms across the Scottish moors. Edinburgh is in full festival mode, with street performers on the Royal Mile and the Tattoo on the castle esplanade, so arrange tours and tickets early. It’s peak family travel season across Britain and Ireland, and fares reflect it.
Across British Isles cruise ports, August brings average highs around 64°F (18°C) and lows near 55°F, with about 3.6 inches of rain over the month and roughly 15 hours of daylight.
- Verdict
- Best time to go
- Season
- May to September; a few sailings in April and October
- Average high / low
- 64°F / 55°F
- Rainfall (month)
- 3.6 in
- Daylight
- About 15 hours
- Typical cruise length
- 10 to 14 nights round trip; 7-night Scotland or Ireland sailings also run
What to pack: layers you can add and remove: long pants, a warm fleece or sweater, a waterproof jacket and closed walking shoes.
How August compares with the rest of the year
- Jan: No regular sailings
- Feb: No regular sailings
- Mar: No regular sailings
- Apr: Shoulder season
- May: Good time to go
- Jun: Best time to go
- Jul: Best time to go
- Aug: Best time to go
- Sep: Good time to go
- Oct: Shoulder season
- Nov: No regular sailings
- Dec: No regular sailings
- No regular sailings
- Shoulder season
- Good time to go
- Best time to go
British Isles weather in August
| Month | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| High °F (°C) | 468 | 468 | 489 | 5111 | 5714 | 6116 | 6418 | 6418 | 6116 | 5613 | 5110 | 489 |
| Low °F (°C) | 404 | 404 | 405 | 426 | 478 | 5211 | 5513 | 5513 | 5312 | 4910 | 457 | 426 |
| Rain in (mm) | 4.1104 | 3.692 | 3.588 | 2.358 | 2.667 | 2.769 | 3.486 | 3.692 | 3.794 | 4.5114 | 4.3109 | 4.9125 |
| Daylight (hrs) | 8 | 10 | 12 | 14 | 16 | 17 | 17 | 15 | 13 | 10 | 8 | 7 |
August weather port by port
| Port | Avg high | Avg low | Rain | Daylight |
|---|---|---|---|---|
| Edinburgh (Leith & South Queensferry) | 65°F | 53°F | 3.3 in | 15 h |
| Dublin | 65°F | 55°F | 4.3 in | 15 h |
| Belfast | 63°F | 55°F | 4.0 in | 15 h |
| Greenock (for Glasgow) | 64°F | 54°F | 5.2 in | 15 h |
| Invergordon (for Inverness & Loch Ness) | 64°F | 52°F | 3.0 in | 15 h |
| Kirkwall, Orkney | 59°F | 54°F | 3.4 in | 16 h |
| Cobh (for Cork) | 66°F | 55°F | 3.8 in | 15 h |
| Liverpool | 67°F | 56°F | 3.3 in | 15 h |
| Portree, Isle of Skye | 60°F | 55°F | 4.9 in | 15 h |
| Lerwick, Shetland | 57°F | 55°F | 3.5 in | 16 h |
| St Peter Port, Guernsey | 64°F | 62°F | 2.1 in | 14 h |
| Southampton (London) | 74°F | 56°F | 2.5 in | 15 h |
Average daily highs and lows, 2015–2024, from NASA POWER, adjusted to sea level. Rain is the average monthly total.
Other great cruise destinations in August
British Isles in August: FAQs
Is August a good time to cruise British Isles?
Yes, it's one of the best months. Purple heather blooms across the Scottish moors. Edinburgh is in full festival mode, with street performers on the Royal Mile and the Tattoo on the castle esplanade, so arrange tours and tickets early. It’s peak family travel season across Britain and Ireland, and fares reflect it.
What is the weather like on a British Isles cruise in August?
Across British Isles cruise ports, August brings average highs around 64°F (18°C) and lows near 55°F, with about 3.6 inches of rain over the month and roughly 15 hours of daylight. Conditions vary from port to port and day to day.
What should I pack for a British Isles cruise in August?
Pack layers you can add and remove: long pants, a warm fleece or sweater, a waterproof jacket and closed walking shoes. Check your cruise line's dress code for evenings.
When is the best time to cruise British Isles?
May to September; a few sailings in April and October. The best months are usually June, July, August.
Where else can I cruise in August?
August is also a top month for Alaska, Canada & New England, Northern Europe, Norwegian Fjords, Baltic Sea.
Updated November 2026 by the BookMyDreamCruise editorial team. How we research and fact-check.
Sources: NASA POWER climate data.