What to pack for Reykjavík in September
- a warm coat, hat and gloves
- a compact umbrella or rain shell — rain is frequent
Humidity averages 83%; max daily wind around 22 km/h.
How September compares
Best months in Reykjavík: July–August. See the full best time to visit Reykjavík guide.
Reykjavík in September: the details
In September, Reykjavík sees average daytime highs of 10°C (50°F) and overnight lows of 6°C (42°F). Rainfall totals roughly 153 mm across 17.8 rainy days, and the sun shines about 5.9 hours per day with 12.6 hours of daylight mid-month. Relative humidity averages 83%.
In context: September is the 4th-warmest month and the second-wettest in Reykjavík. The sunniest month is June (9 h/day).
| Metric | September average |
|---|---|
| Daytime high | 10°C / 50°F |
| Overnight low | 6°C / 42°F |
| Rainfall | 153 mm over 17.8 rainy days |
| Sunshine | 5.9 h/day (12.6 h daylight) |
| Humidity | 83% |
| Travel score | 2.6 / 10 |
These figures are climate normals computed from the ERA5 weather reanalysis (2019–2024) for Reykjavík, Iceland (64.14, -21.9) — see our methodology. Actual conditions vary year to year.
Not set on Reykjavík? Browse the best places to visit in September ranked by travel score.
Frequently asked questions
How hot is Reykjavík in September?
Daytime highs in Reykjavík in September average 10°C (50°F); nights drop to about 6°C.
Does it rain in Reykjavík in September?
Expect around 17.8 rainy days and 153 mm of rainfall in September.
Is September a good time to visit Reykjavík?
September is a challenging month to visit Reykjavík — consider July–August instead. Overall travel score: 2.6/10. The best months are July–August.
Also good in September, near Reykjavík
Where should you go next month?
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