Garðabær Weather in September

September in Garðabær brings moderate temperatures, with daytime highs of 12°C (54°F) and nights around 6°C (43°F). Quite a bit of rainfall is expected, around 147 mm (5.8 in), so pack an umbrella.

Rainfall in Garðabær in September

You can expect rain on roughly 18 days based on historical data, averaging 147 mm (5.8 in) for the month. Expect frequent rainfall this month, and not just light drizzle. When it rains, it tends to come down hard.

Temperature in Garðabær in September

In September, expect moderate temperatures in Garðabær, with highs of 12°C (54°F) and lows of 6°C (43°F) at night. This creates a mild day-to-night pattern that is generally easy to manage with the right clothing. With overnight lows of 6°C (43°F), nights are cold. The cold air does make for deep, comfortable sleep if you have enough blankets.

Sunshine in Garðabær in September

The month experiences a moderate amount of sunlight, with 121 hours of sunshine. This provides a nice balance between sunshine and clouds.

Wind Speed in Garðabær 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.

Our weather planner can help you find worldwide destinations with pleasant weather during this period. June and July typically offer the best weather for Garðabær.