Measured, not vibes
Best Time to Visit Reykjavik
By measured weather comfort, the top months for Reykjavik are July, August, June — and RouteVerdict's editorial pick, which also weighs crowds and prices, is June, July, August. The table below is computed from ERA5 reanalysis data for 2020–2024, measured at Reykjavik (37 m elevation).
Month by month
Reykjavik weather and comfort, 2020–2024
| Month | Avg high | Wet days | Comfort | Season |
|---|---|---|---|---|
| January | 1.6°C / 35°F | 15.2 | 4 | |
| February | 2°C / 36°F | 13.8 | 5 | |
| March | 2.9°C / 37°F | 12.5 | 6 | |
| April | 6°C / 43°F | 12.8 | 13 | |
| May | 8.5°C / 47°F | 16.3 | 18 | Shoulder |
| June | 10.9°C / 52°F | 14.3 | 29 | Best |
| July | 12.8°C / 55°F | 12 | 40 | Best |
| August | 13°C / 55°F | 13.2 | 40 | Best |
| September | 9.9°C / 50°F | 14.5 | 25 | Shoulder |
| October | 6.4°C / 44°F | 13.3 | 13 | |
| November | 4.3°C / 40°F | 13.2 | 9 | |
| December | 1.1°C / 34°F | 13.5 | 4 |
Comfort is RouteVerdict's 0–100 score: 100·exp(−(high−23)²/162) × (1 − min(0.35, wet days × 0.02)). The full method is on the methodology page. Weather data by Open-Meteo.com (ERA5, CC BY 4.0), 2020–2024 normals. Wet day = ≥1 mm precipitation.
What the seasons are actually like
Traveling to Reykjavik month by month
Reykjavik's comfort score never gets dramatic, and that's the point to understand before booking. June through August average highs of 10.9–13°C with comfort scores of 28.9–40 — genuinely mild by Icelandic standards, with nearly round-the-clock June daylight that makes long days on the Ring Road or hiking possible. May sits just below that peak at a comfort score of 18.4, a legitimate shoulder option with fewer visitors and lower prices. Winter (November through February) drops to highs of 1.1–4.3°C and comfort scores of 3.8–8.5, but it's also the best window for aurora viewing on clear nights — a genuine trade-off between weather and one specific experience, not a season to avoid outright if that's what you're here for.
FAQ
Reykjavik timing questions
What is the best month to visit Reykjavik?
By measured weather comfort (ERA5 2020–2024), the top months are July, August, and June, with July scoring highest. RouteVerdict's editorial pick is June, July, and August, which also weighs crowds, prices, and events.
What is the hottest month in Reykjavik?
August, with an average daily high of 13°C (55°F).
What is the rainiest month in Reykjavik?
May, averaging 16.3 days with at least 1 mm of precipitation.
When is shoulder season in Reykjavik?
September and May — the best-scoring months outside both the measured top three and RouteVerdict's editorial peak-season pick.
Is Reykjavik worth visiting in winter despite the cold?
If the northern lights are the goal, yes — November through February brings highs of just 1.1–4.3°C and comfort scores of 3.8–8.5, the coldest and darkest stretch of the year, but also the best window for aurora viewing on clear nights.
Why is May a good time to visit Reykjavik if it's not in the top 3?
May averages 8.5°C with a comfort score of 18.4 — below the June–August peak, but with noticeably fewer visitors and lower prices than peak summer, plus daylight hours that are already stretching long.