August · Iceland
Best time to visit Selfoss in August Weather, crowds & prices
Weather in Selfoss in August
Average temperature 10°C, 128 mm of rain, about 10 days with 6+ hours of sunshine and 83% humidity — based on the five most recent complete years of ERA5 data (2021–2025).
August score
5.7/10
Ranked #3 of 12 months
- Avg temp
- 10°C
- Rainfall
- 128 mm
- Humidity
- 83%
- Days with 6h+ sun
- 10
- Crowd Density
- Peak Tourist Rush
- Average Expenses
- $$$ · Peak Season Rates ($$$)
August in Selfoss scores 5.7/10 for sightseeing and cultural travel - one of the top 12-month picks (#3). Expect around 10°C, 128 mm of rain, and roughly 10 days with 6+ hours of sunshine this month.
Selfoss is South Iceland’s service town on the Ölfusá-base for Golden Circle and south-coast waterfall loops. Best window: the short high-summer window when daylight peaks.
August in Selfoss — middling scores, decent value
Expect 10°C (50°F) in August. A good month for city streets, viewpoints and long meals; leave swimming for another season.
128 mm of rain signals a properly wet month, with only about 10 days with 6+ hours of sunshine to count on — build indoor options into the schedule.
That is 5.7/10 on the same scale — 3rd of 12 months, versus 6.9/10 for the best month here.
Pack a mid-weight jacket, long sleeves and shoes you can walk 15 km in, a proper rain shell rather than an umbrella.
Budget for peak pricing, and this is one of the busiest months here. You are paying the year's highest rates for the year's best conditions — book early or shift a few weeks either side.
Frequently asked
- What is the weather like in Selfoss in August?
- In August, Selfoss averages 10°C, 128 mm of rain, and about 10 days with 6+ hours of sunshine. Its climate-comfort score is 5.7/10.
- Is August a good time to visit Selfoss?
- August earns a 5.7/10 climate-comfort score. Use the year-round chart to weigh the weather against your budget and crowd preferences.
- How much does it rain in Selfoss in August?
- Expect about 128 mm of rain in August. Average humidity is 83% and there are about 10 days with 6+ hours of sunshine.
Curated in Selfoss
Tickets & experiences
Things to do in Selfoss
Selfoss, Iceland. Live activities and tours from GetYourGuide, matched to this destination.