Hafnarfjördur Weather in September

Hafnarfjördur in September sees moderate temperatures, with highs around 12°C (54°F) and overnight lows of 6°C (43°F). Rainfall is fairly high at around 146 mm (5.7 in) on average, so pack waterproofs just in case.

Rainfall in Hafnarfjördur in September

Expect around 18 days of rain based on historical data, with 146 mm (5.7 in) average. Expect frequent rainfall this month, and not just light drizzle. When it rains, it tends to come down hard.

Temperature in Hafnarfjördur in September

In September, Hafnarfjördur sees moderate temperatures, with highs of 12°C (54°F). Nights drop to around 6°C (43°F). Conditions are often most pleasant around the middle of the day. Nights drop to 6°C (43°F). Cold nights like these are actually great for sleeping well, as long as you have a warm enough duvet.

Sunshine in Hafnarfjördur in September

You can expect a moderate amount of sunlight, with approximately 121 hours. This means a pleasant mix of sun and overcast.

Wind Speed in Hafnarfjördur in September

Average wind conditions reach 5 m/s (10 knots) in September. This creates lively weather with fresh winds that make small trees sway noticeably. Remember this is an average: some days are less windy while others have particularly active windy conditions.

Average water temperature in September

With water temperatures around 10°C (50°F), swimming isn't really an option for most visitors. The cold sets in quickly and a wetsuit won't fully solve it.

September in Hafnarfjördur has its charm. However, if you're seeking pleasant, dry and sunny weather, our weather planner can help you explore other destinations in the world.