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.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit Iceland, check out our Kjalarnes's climate page.
Kjalarnes Temperature in September
Min Temperature
6°C (43°F)
Max Temperature
12°C (54°F)
Water Temperature
10°C (50°F) *
Chance of Rain
58%
Precipitation
139 mm (5.5 in)
Rainy days
18 days
Humidity
79% *
Windspeed
5 m/s (10 knots) *
Sunshine
121 hours *
Percentage Sunshine
30% *
Best Places in Iceland in September
Find out more about the weather in Iceland and which places have the best travel conditions in this month. See all of Iceland in September →
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What to Wear in Kjalarnes in September
The weather can swing between comfortable and chilly in September, so flexibility is key. Pack a variety of tops, at least one warm layer, and both shorts and long pants. This gives you options no matter what the day brings. Expect heavy rainfall, so bring good rain protection and waterproof bags. With water temperatures around 10°C (50°F), the water is quite cold for swimming. You can skip the swimwear unless you're particularly tough. Sunglasses could come in handy during the sunnier parts of your trip.What To Do in Kjalarnes in September
We rated the following activities from 1 (least suitable) to 10 (best) to do.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit Iceland, check out our Kjalarnes's climate page.
Temperature Rainfall Sunshine Humidity Wind Speed Water Temp
See the full Kjalarnes climate overview or explore weather in Iceland.
