Iceland in May
Weather, Northern Lights odds, and what's actually worth planning around this month, pulled from the same sourced data used across this site's other timing tools.
| Average high | Average low | Daylight | Northern Lights |
|---|---|---|---|
| 44–48°F (7–9°C) | 37–39°F (3–4°C) | ~18–19 hrs | No |
Same sourced figures as Iceland Weather by Month and Northern Lights Viewing Odds by Month. Rates last reviewed: August 20, 2026.
What's worth planning around in May
- The first F-roads of the season typically begin opening late in the month, the earliest realistic point for any Highland access.
- Puffins begin arriving at coastal cliffs and islands for the nesting season.
- Reykjavík Arts Festival runs May 30–June 14 in 2026, one of Iceland's larger cultural events.
F-road status in May
The easiest routes (F35 Kjölur, F550 Kaldidalur) typically begin opening late in the month. See Iceland F-Roads Explained for the full picture and where to check live status, and Do You Need a 4x4? if you're deciding on a vehicle.
Packing for May
Layer for a wide daily temperature swing and pack a swimsuit regardless of the season, geothermal pools run year-round. See Iceland Packing Regrets for what real travelers wish they'd packed.
Sources
- Weather and daylight figures: same source set as Iceland Weather by Month
- Northern Lights viewing status: same source set as Northern Lights Viewing Odds by Month
- F-road status: same source set as Iceland F-Roads Explained
- Guide to Iceland, "The Top 30 Festivals in Iceland", July 2026
- What's On in Reykjavík, "Music Festivals in Iceland 2026: The Full Calendar"
- Rick Steves' Europe, "Holidays and Festivals in Iceland 2026–2027"
- Guide to Iceland, "The Old Icelandic Calendar: Months, Seasons, and Traditions", July 2026
- Iceland Review, "The Icelandic Culture: An Insight into Holidays and Customs"
- Lava Car Rental, "Top 13 Annual Icelandic Traditions and 2026 Dates", January 2026
- What's On in Reykjavík, "An Introduction to Iceland's Customs and Traditions"
- Wikipedia, "First day of summer (Iceland)" (2026 date confirmation)
- Icerental4x4, "Iceland Festivals and Events" 2026 guide (Laugavegur Ultra Marathon)
- What's On in Reykjavík, "Guide to Verslunarmannahelgi and Þjóðhátíð 2026" (Goslok)
Frequently asked questions
What's the weather like in Iceland in May?
Daytime highs in May typically run 44–48°F (7–9°C), with overnight lows around 37–39°F (3–4°C). You'll get roughly ~18–19 hrs of daylight. These are averages, not guarantees, Iceland's weather can shift within the same day regardless of season.
Can you see the Northern Lights in Iceland in May?
Not realistically. ~18–19 hrs daylight; nights too short and bright. Even strong solar activity doesn't help if the sky never gets properly dark. See Northern Lights Viewing Odds by Month for the months that do work.