September
Weather in September
Temperature
Orkney greets September with an average high-temperature of a mild 14.1°C (57.4°F), marking a slight deviation from the preceding month. Throughout September, a steady low-temperature average of 8.8°C (47.8°F) is noted.Rainfall
In September, the rain falls for 16.2 days. Throughout September, 95mm (3.74") of precipitation is accumulated. In Orkney, United Kingdom, during the entire year, the rain falls for 188.7 days and collects up to 1039mm (40.91") of precipitation.Sea temperature
In Orkney, the average seawater temperature in September is 12.8°C (55°F).Note: With the appropriate swimsuit, one can swim in 12.8°C (55°F) even if temperatures dip below 10°C (50°F); otherwise, be ready for cold shock and breath issues. A fleeting swim around 13°C (55.4°F) is distressing.
Daylight
The average length of the day in September in Orkney, United Kingdom, is 12h and 49min.On the first day of September, sunrise is at 6:10 am and sunset at 8:11 pm. On the last day of the month, sunrise is at 7:14 am and sunset at 6:46 pm BST.
Sunshine
The average sunshine in September is 3.5h.Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are September temperatures in Orkney?
How much does it rain in Orkney in September?
What is the sea water temperature in September in Orkney?
What is the average length of the day in September in Orkney?
When is the sunrise / sunset in September in Orkney?
How many hours of sunshine does Orkney have in September?
Average temperature in September
Orkney, United Kingdom
- Average high temperature in September: 14.1°C
The warmest month (with the highest average high temperature) is August (16°C).
The months with the lowest average high temperature are January and February (6.4°C).
- Average low temperature in September: 8.8°C
The month with the highest average low temperature is August (10.3°C).
The coldest month (with the lowest average low temperature) is February (1.7°C).
Average rainfall in September
Orkney, United Kingdom
- Average rainfall in September: 95.3mm
The wettest months (with the highest rainfall) are October and November (126mm).
The driest month (with the least rainfall) is May (48mm).
Average rainfall days in September
Orkney, United Kingdom
- Average rainfall days in September: 16.2 days
The month with the highest number of rainy days is November (20.8 days).
The month with the least rainy days is May (10.6 days).
Average sea temperature in September
Orkney, United Kingdom
- Average sea temperature in September: 12.8°C
The best month for swimming (with the highest average sea temperature) is August (13.3°C).
The coldest month (with the lowest average sea temperature) is March (7.1°C).
Average daylight in September /
Average sunshine in September
Orkney, United Kingdom
- Average daylight in September: 12h and 5min
The month with the longest days is June (Average daylight: 18h and 18min).
The month with the shortest days is December (Average daylight: 6h and 24min).
- Average sunshine in September: 3h and 3min
The month with the most sunshine is May (Average sunshine: 6h and 6min).
The month with the least sunshine is December (Average sunshine: 0h and 48min).
