August · United Kingdom
Best time to visit Giant's Causeway in August Weather, crowds & prices
Weather in Giant's Causeway in August
Average temperature 15°C, 87 mm of rain, about 12 days with 6+ hours of sunshine and 85% humidity — based on the five most recent complete years of ERA5 data (2021–2025).
August score
7.3/10
Ranked #4 of 12 months
- Avg temp
- 15°C
- Rainfall
- 87 mm
- Humidity
- 85%
- Days with 6h+ sun
- 12
- Crowd Density
- Peak Tourist Rush
- Average Expenses
- $$$ · Peak Season Rates ($$$)
August in Giant's Causeway scores 7.3/10 for nature and wildlife travel - an above-average month (#4 of 12). Expect around 15°C, 87 mm of rain, and roughly 12 days with 6+ hours of sunshine this month.
Hexagonal basalt columns meeting Atlantic spray peak in May-September.
August in Giant's Causeway: strong conditions, 4th of 12
Temperatures hover around 15°C (59°F) — the kind of month where neither heat nor cold forces the schedule.
Budget for roughly 87 mm of rain this month — a flexible day or two helps — with about 12 days with 6+ hours of sunshine and 14.8 hours of daylight to work around it.
That is 7.3/10 on the same scale — 4th of 12 months, versus 8.8/10 for the best month here.
Pack layers you can shed by midday plus one warm layer for the evening, a packable rain layer, footwear you can get muddy.
Expect peak pricing, and this is one of the busiest months here.
If your dates are flexible, June is materially better in Giant's Causeway — 1.5 points higher on the same scale.
Frequently asked
- What is the weather like in Giant's Causeway in August?
- In August, Giant's Causeway averages 15°C, 87 mm of rain, and about 12 days with 6+ hours of sunshine. Its climate-comfort score is 7.3/10.
- Is August a good time to visit Giant's Causeway?
- August earns a 7.3/10 climate-comfort score. Use the year-round chart to weigh the weather against your budget and crowd preferences.
- How much does it rain in Giant's Causeway in August?
- Expect about 87 mm of rain in August. Average humidity is 85% and there are about 12 days with 6+ hours of sunshine.
Curated in Giant's Causeway
Tickets & experiences
Things to do in Giant's Causeway
Giant's Causeway, United Kingdom. Live activities and tours from GetYourGuide, matched to this destination.