Kjalarnes Weather in September

Kjalarnes in September sees moderate daytime temperatures of 12°C (54°F) and nighttime lows of 6°C (43°F). Rainfall is fairly high this month at around 139 mm (5.5 in), so pack a rain jacket to stay dry.

Rainfall in Kjalarnes in September

Based on our climate data of the past 30 years, about 18 days of rain are anticipated, with 139 mm (5.5 in) on average. This is a wet month with frequent and often heavy showers. Both the number of rain days and the total rainfall are high.

Temperature in Kjalarnes in September

In September, Kjalarnes gets moderate temperatures, with highs of 12°C (54°F). Nights cool to around 6°C (43°F). This creates a mild day-to-night pattern that is generally easy to manage with the right clothing. With lows around 6°C (43°F), nights are cold. The upside is that cool, crisp nights are often the best for a deep sleep.

Sunshine in Kjalarnes 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 Kjalarnes in September

Wind speeds average 5 m/s (10 knots) during September. At this speed, gentle to moderate breezes make small trees sway and the wind creates whitecaps on water bodies. Daily variations range from moderate winds to stronger breezes, creating excellent conditions for sailing, kite flying and wind sports.

Average water temperature in September

At 10°C (50°F), the water is too cold for most people to swim comfortably. A wetsuit is pretty much essential if you plan to go in.

If you're looking for dry conditions and comfortable temperatures, September may not be the ideal month to visit Kjalarnes. Our weather planner can help you explore destinations with more pleasant weather conditions.