May · Iceland
Best time to visit Þingvellir in May Weather, crowds & prices
Weather in Þingvellir in May
Average temperature 5°C, 146 mm of rain, about 17 days with 6+ hours of sunshine and 85% humidity — based on the five most recent complete years of ERA5 data (2021–2025).
May score
6.0/10
Ranked #4 of 12 months
- Avg temp
- 5°C
- Rainfall
- 146 mm
- Humidity
- 85%
- Days with 6h+ sun
- 17
- Crowd Density
- Moderate Crowds
- Average Expenses
- $$ · Moderate Cost ($$)
May in Þingvellir scores 6.0/10 for nature and wildlife travel - an above-average month (#4 of 12). Expect around 5°C, 146 mm of rain, and roughly 17 days with 6+ hours of sunshine this month.
Þingvellir is where Iceland’s parliament began-rift valley paths between Eurasian and North American plates. Best window: the short high-summer window when daylight peaks.
May in Þingvellir — workable with trade-offs
May averages 5°C (41°F) — jacket weather. Comfortable for walking and museums, too cool for anything water-based.
At 146 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, 4th of 12 months, against 7.5/10 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.
Flexible dates? July scores 1.5 points higher here — enough to change the trip.
Frequently asked
- What is the weather like in Þingvellir in May?
- In May, Þingvellir averages 5°C, 146 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 Þingvellir?
- 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 Þingvellir in May?
- Expect about 146 mm of rain in May. Average humidity is 85% and there are about 17 days with 6+ hours of sunshine.
Curated in Þingvellir
Tickets & experiences
Things to do in Þingvellir
Þingvellir, Iceland. Live activities and tours from GetYourGuide, matched to this destination.