May · Iceland
Best time to visit Seljalandsfoss in May Weather, crowds & prices
Weather in Seljalandsfoss in May
Average temperature 6°C, 158 mm of rain, about 17 days with 6+ hours of sunshine and 88% humidity — based on the five most recent complete years of ERA5 data (2021–2025).
May score
6.0/10
Ranked #3 of 12 months
- Avg temp
- 6°C
- Rainfall
- 158 mm
- Humidity
- 88%
- Days with 6h+ sun
- 17
- Crowd Density
- Moderate Crowds
- Average Expenses
- $$ · Moderate Cost ($$)
May in Seljalandsfoss scores 6.0/10 for nature and wildlife travel - one of the top 12-month picks (#3). Expect around 6°C, 158 mm of rain, and roughly 17 days with 6+ hours of sunshine this month.
Seljalandsfoss drops from the Eyjafjöll cliffs with a path behind the veil-iconic south-coast waterfall drama. Best window: the short high-summer window when daylight peaks.
May in Seljalandsfoss — middling scores, decent value
May averages 6°C (43°F) — jacket weather. Comfortable for walking and museums, too cool for anything water-based.
At 158 mm this is a genuinely wet month: about 17 days with 6+ hours of sunshine in total, and outdoor plans need an indoor fallback.
It scores 6/10 here, 3rd of 12 months, against 7.3/10 in the destination's best month.
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.
Figure on mid-season pricing, with crowds are moderate.
Frequently asked
- What is the weather like in Seljalandsfoss in May?
- In May, Seljalandsfoss averages 6°C, 158 mm of rain, and about 17 days with 6+ hours of sunshine. Its climate-comfort score is 6.0/10.
- Is May a good time to visit Seljalandsfoss?
- May earns a 6.0/10 climate-comfort score. Use the year-round chart to weigh the weather against your budget and crowd preferences.
- How much does it rain in Seljalandsfoss in May?
- Expect about 158 mm of rain in May. Average humidity is 88% and there are about 17 days with 6+ hours of sunshine.
Curated in Seljalandsfoss
Tickets & experiences
Things to do in Seljalandsfoss
Seljalandsfoss, Iceland. Live activities and tours from GetYourGuide, matched to this destination.