Temperatures in September
It's cool in September in Orkney Islands with an average temperature of 14°C. Temperatures this month range from a low of 12°C to a high of 16°C. At night, you can expect temperatures between 8°C and 12°C.
Max and Min Temperatures per Day
This chart shows the daily maximum and minimum temperatures in degrees Celsius for Orkney Islands in September. The red line indicates the max temperatures, and the blue line shows the minimums.
Start of September
The month of September starts in Orkney Islands with cool temperatures, averaging around 16°C during the day and nights close to 11°C. You can expect regular precipitation, but there’s also a chance for some sunny days in the first days of the month.
Mid-September
By mid-September, the average daytime temperature drops to around 15°C, with nights close to 11°C. The chance of precipitation is high during this period.
End of September
By the end of September, the average daytime temperature in Orkney Islands will be around 14°C, with nights close to 10°C. There’s regular precipitation, but with a bit of luck, you’ll also get some dry and sunny days.
Discover cheap holidays to Orkney Islands 
Precipitation in September
In September, there is an average of 140 mm of precipitation, spread over 15 days. The wind speed is around 5 Bft, mostly coming from the Southwest.
Across the whole month, the average precipitation chance is 51% per day.
Precipitation Chance
This chart shows the daily precipitation chance (in percentages) in September for Orkney Islands. 0% means it never rained on that day in the past 10 years, and 100% means it rained every day. All values in between represent the average chance of precipitation on that day.
Orkney Islands in September |
London | ||
|---|---|---|---|
 Average Temperature |
14°C | 20°C | |
 High Temp |
16°C | 22°C | |
| Low Temp |
12°C | 17°C | |
 Total Precipitation |
140 mm | 44 mm | |
| Rainy Days |
15 days | 8 days | |
August
UV index
The UV index is a maximum of 5 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 Orkney Islands?
After some sun? Then September isn’t the best time to be in Orkney Islands. There’s too much chance of rain this month.
Temperature records for Orkney Islands in September
With 22°C, Orkney Islands hit the highest temperature in the last 10 years in September 2023. The lowest daytime temperature in this month was 9°C in 2018. The extreme night temperatures ranged from a low of 2°C to a high of 15°C.
Check out the climate of Orkney Islands for all months and discover the best travel time
Plan your next holiday
Don’t miss the best holiday deals for Orkney Islands and see what our partners have for you.
Daily Temperature in September in Orkney Islands
This chart shows the average daily temperatures, both day and night, for each day in September in Orkney Islands, measured in degrees Celsius. The red line represents the maximum temperatures, while the blue line shows the minimums. The days of the month are displayed at the bottom of the chart. The data, based on historical observations, gives an overview of the average daily temperatures during this month.
Daily Precipitation in September in Orkney Islands
The chart below shows the average daily precipitation in September for Orkney Islands, measured in millimetres over the past years. Precipitation is always measured as water, even if it’s snow or hail. The days of the month are shown 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 rain is more likely. But it’s still an average, so each day can be different. Based on historical weather data for September, you can expect around 15 days of rain in Orkney Islands.
Daily UV Index in September in Orkney Islands
This chart shows the average daily UV index in September in Orkney Islands, 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 Orkney Islands Over the Years
This chart shows the average temperature in September in Orkney Islands, measured in degrees Celsius, over the past years.
Total Precipitation in September in Orkney Islands Over the Years
This chart shows the average precipitation in September in Orkney Islands, measured in millimetres over the past years. Precipitation is always measured as water, even if it’s snow or hail.
Daily climate in September for Orkney Islands
Click on a specific day in September for detailed info on the typical weather on that day in Orkney Islands. Check out the historical temperatures and precipitation over the past 10 years on this day.
Weather experiences in September in Orkney Islands
Have you been to Orkney Islands in September?
Share your weather experience in September in Orkney Islands.
Average Weather in Orkney Islands by Month
Click on a month below to see detailed weather info for Orkney Islands. Based on historical weather data, you can see the average temperature, precipitation, wind, and UV index for each day of the month.
Or check out the climate of Orkney Islands for all months at once
