August · Iceland
Best time to visit Mývatn in August Weather, crowds & prices
Weather in Mývatn in August
Average temperature 5°C, 108 mm of rain, about 9 days with 6+ hours of sunshine and 90% humidity — based on the five most recent complete years of ERA5 data (2021–2025).
August score
5.3/10
Ranked #4 of 12 months
- Avg temp
- 5°C
- Rainfall
- 108 mm
- Humidity
- 90%
- Days with 6h+ sun
- 9
- Crowd Density
- Peak Tourist Rush
- Average Expenses
- $$ · Moderate Cost ($$)
August in Mývatn scores 5.3/10 for nature and wildlife travel - an above-average month (#4 of 12). Expect around 5°C, 108 mm of rain, and roughly 9 days with 6+ hours of sunshine this month.
Lake Mývatn is North Iceland’s volcanic wonderland-pseudocraters, lava labyrinths, and steaming geothermal baths. Best window: the short high-summer window when daylight peaks.
August in Mývatn: mixed conditions, plan around the weather
Expect 5°C (41°F) in August. A good month for city streets, viewpoints and long meals; leave swimming for another season.
108 mm of rain signals a properly wet month, with only about 9 days with 6+ hours of sunshine to count on — build indoor options into the schedule.
That is 5.3/10 on the same scale — 4th of 12 months, versus 7.1/10 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, footwear you can get muddy.
Expect mid-season pricing, and this is one of the busiest months here.
If your dates are flexible, June is materially better in Mývatn — 1.8 points higher on the same scale.
Frequently asked
- What is the weather like in Mývatn in August?
- In August, Mývatn averages 5°C, 108 mm of rain, and about 9 days with 6+ hours of sunshine. Its climate-comfort score is 5.3/10.
- Is August a good time to visit Mývatn?
- August earns a 5.3/10 climate-comfort score. Use the year-round chart to weigh the weather against your budget and crowd preferences.
- How much does it rain in Mývatn in August?
- Expect about 108 mm of rain in August. Average humidity is 90% and there are about 9 days with 6+ hours of sunshine.
Curated in Mývatn
Tickets & experiences
Things to do in Mývatn
Mývatn, Iceland. Live activities and tours from GetYourGuide, matched to this destination.