IcelandAverage weather for Heimaey in September
It's cool in September in Heimaey with an average temperature of 11°C. Temperatures this month range from a low of 10°C to a high of 13°C. At night, you can expect temperatures between 6°C and 10°C.
Start of September
The month of September starts in Heimaey with cool temps, averaging around 13°C during the day and nights around 10°C. A few showers might pop up early in the month, but overall, it’ll stay mostly sunny and dry. Go for a warm jacket, sweater or hoodie, and long pants.
Mid September
By mid-September, daytime temps drop to around 12°C, with nights around 8°C. There’s a chance of some showers during this time, but plenty of dry and sunny days too.
End of September
By the end of September, the average daytime temperature in Heimaey is around 11°C, while nighttime temps are about 7°C. A shower might pop up, but overall, the weather will be dry and sunny.
In September, there is an average of 103 mm of precipitation, spread over 16 days. The wind speed is around 6 Bft, mostly coming from the South.
Heimaey in September |
New York | ||
|---|---|---|---|
 Average temperature |
11°C | 27°C | |
 Max. temperature |
13°C | 31°C | |
| Min. temperature |
10°C | -5°C | |
 Total precipitation |
103 mm | 57 mm | |
| Rainy days |
16 days | 9 days | |
August
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.
Is September a good time to visit Heimaey?
Looking for sun? September isn’t a good month to be in Heimaey. There’s too much chance of rain this month.
Temperature records
With 17°C in 2015, Heimaey reached the highest temperature in September over the past 10 years. The lowest daytime temperature in this month was 4°C in 2021. The extreme nighttime temperatures ranged from a lowest recorded value of 0°C to a highest value of 12°C.
Check out the climate of Heimaey 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.
Daily Temperature in September in Heimaey
This chart shows the average daily high and low temperatures in September for Heimaey, in degrees Celsius. The red line represents the highs, and the blue line shows the lows. The days of the month are displayed at the bottom of the chart. The data, based on historical observations, provide the average temperatures for this month.
Daily Precipitation in September in Heimaey
The chart below shows the average daily precipitation in September for Heimaey, measured in millimeters over the past few years. Precipitation is always measured as water, even if it’s snow or hail. The days of the month are listed at the bottom of the chart.
A low average precipitation means that the chance of rain on that day is usually small, while a higher average suggests that it rained more often. But remember, it’s just an average, and every day can be different. Based on historical weather data for September, you can expect about 16 days of precipitation in Heimaey.
Daily UV index in September in Heimaey
This chart shows the average daily UV index in September in Heimaey, 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.
Temperature in September in Heimaey over the years
This chart shows the average temperature in September in Heimaey, measured in degrees Celsius, over the past few years.
Total precipitation in September in Heimaey over the years
This chart shows the average precipitation in September in Heimaey, measured in millimeters over the past years. Precipitation is always measured as water, whether it’s snow or hail.
Daily weather in September for Heimaey
Click on any day in September to get detailed info about the usual weather on that day in Heimaey. Check out the historical temperatures and precipitation over the past 10 years on this day.
Weather experiences in September in Heimaey
Have you been to Heimaey in September?
Share your weather experience in September in Heimaey.
Average weather in Heimaey by month
Click on a month below to see detailed weather info for Heimaey. Based on historical weather data, you can see the average temperature, precipitation, wind, and UV index for each day of the month.
