IcelandThe weather in September in Álftanes
It's cool in September in Álftanes with an average temperature of 12°C. Temperatures this month range from a low of 10°C to a high of 14°C. At night, you can expect temperatures between 5°C and 9°C.
Average temperatures and precipitation
This chart shows the average daily maximum and minimum temperatures (in degrees Celsius) and precipitation (in millimeters) in September for Álftanes, Iceland. A low precipitation value usually indicates little to no rainfall on that day in recent years, while a higher value suggests more frequent rainfall.
Temperature records
With 18°C in 2019, Álftanes reached the highest temperature in September over the past 10 years. The lowest daytime temperature in this month was 4°C in 2020. The extreme nighttime temperatures ranged from a lowest recorded value of -4°C to a highest value of 13°C.
Precipitation and snowfall
In September, there is an average of 97 mm of precipitation, spread over 12 days. Of the total precipitation, about 0,5 cm falls as snow in September. The wind speed is around 5 Bft, mostly coming from the South.
Daily weather in September for Álftanes
Click on any day in September to get detailed info about the usual weather on that day in Álftanes. Check out the historical temperatures and precipitation over the past 10 years on this day.
September weather comparison
| Álftanes | New York | |
|---|---|---|
| Average temperature | 12°C | 27°C |
| Max. temperature | 14°C | 31°C |
| Min. temperature | 5°C | -5°C |
| Total precipitation | 97 mm | 57 mm |
| Rainy days | 12 days | 9 days |
| Total snowfall | 0,5 cm | 0 cm |
| Snowy days | 1 day | 0 days |
Start of September
The month of September starts in Álftanes with cool temps, averaging around 13°C during the day and nights around 9°C.
Mid September
By mid-September, daytime temps drop to around 12°C, with nights around 7°C. During this part of the month, you might see regular precipitation, but there will also be some sunny days.
End of September
By the end of September, the average daytime temperature in Álftanes is around 11°C, while nighttime temps are about 6°C. A shower might pop up, but overall, the weather will be dry and sunny.
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UV index
The UV index is a maximum of 3 this month. That's a moderate value on the intensity scale of 1 to 11. Unprotected skin can burn in about 30 minutes.
Check out the climate of Álftanes for all months and discover the best travel time
Curious about the weather in other parts of Iceland? Check out the climate and weather for spots like Reykjavík, Vík, or explore other destinations in Iceland.
Temperature charts
These charts show the average temperatures in September in Álftanes, Iceland. The temperatures are shown in degrees Celsius and are calculated based on data from the past 10 years.
Daily Temperature in September in Álftanes
Temperature in September in Álftanes over the years
Precipitation charts
These charts show the average amount of precipitation in September in Álftanes, Iceland. Precipitation is always measured as water, even when it falls as snow or hail The amount of precipitation is displayed in millimeters, while snowfall is shown in centimeters.
Daily Precipitation in September in Álftanes
Total precipitation in September in Álftanes over the years
Daily Snowfall in September in Álftanes
Snowfall in September in Álftanes per year
Daily UV index in September in Álftanes
This chart shows the average daily UV index in September in Álftanes, with the UV index ranging from 0 to a maximum of 11. The bottom of the chart shows the days of the month. Based on historical data, this chart provides an idea of the daily UV radiation levels you can expect.
Weather experiences in September in Álftanes
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Average weather in Álftanes by month
Click on a month below to see detailed weather info for Álftanes. Based on historical weather data, you can see the average temperature, precipitation, wind, and UV index for each day of the month.