Weather in Shetland Islands in September 2025
Average weather
Average temperature in Shetland Islands in September
The temperature in September is +55°F on average, with a range between a maximum of +59°F during the day and a minimum of +48°F at night.
The average maximum temperature goes down 17% by the end of the month, compared with the beginning of the month, from +55°F to +54°F.
Is Shetland Islands warm or cold in September?
Shetland Islands is typically mild in September.
Maximum temperatures go down compared to the previous month from +57°F to +55°F. The minimum temperature also goes down from +52°F to +50°F.
Pack a light jacket as it will be warm in the day and cool in the evenings.
September is one of the warmest months in Shetland Islands, here is the comparison with other months:
Climate in Shetland Islands in September
| August | September | October | ||||
|---|---|---|---|---|---|---|
| Avg. temperature | ||||||
| +57°F | +55°F | +52°F | ||||
| Min. temperature | ||||||
| +36°F | +36°F | +30°F | ||||
| Max. temperature | ||||||
| +75°F | +70°F | +66°F | ||||
| Rainfall | ||||||
| 68 mm | 89 mm | 114 mm | ||||
| Wind | ||||||
| 5 m/s | 7 m/s | 8 m/s | ||||
| Humidity | ||||||
| 86% | 84% | 82% | ||||
| Air pressure | ||||||
| 1010 HPa | 1009 HPa | 1006 HPa | ||||
| Sunny days | ||||||
| 1 | 1 | 0 | ||||
| Cloudy days | ||||||
| 11 | 8 | 6 | ||||
| Rainy days | ||||||
| 19 | 21 | 24 | ||||
| Snowy days | ||||||
| 0 | 0 | 0 | ||||
September weather is still as ok as in August. It’s getting colder in September. From +57°F in the day, the average maximum temperature lowers to +55°F. Prepare for more rain. Average rainfall goes from 68 mm to 89 mm. It feels drier, as humidity decreases from 86% to 84%. Winds are stronger in comparison to August, going up from 5 m/s to 7 m/s on average. The amount of sunny days stay about the same, averaging 1 sunny days during the month.
October brings much the same weather, it remains ok.
Wind
The average wind speed is 8 m/s getting up to 13 m/s which is a medium breeze. You can feel it, especially getting out of the water.
The average wind speed in Shetland Islands is gradually increasing during September, going from 4 m/s to 8 m/s over the course of the month.
Rain
How was the weather last September in Shetland Islands?
Climate Change Over the Years
The climate in Shetland Islands in September has not changed that much over the last 43 years.
The average temperature was the lowest in 1979 (+47°F) and the highest in 2006 (+52°F). The driest year was 1996 with only 776 mm of rainfall, and the wettest year was 2015 with 1280 mm.
FAQ
Is September a good time to visit Shetland Islands?
Can you sunbathe in Shetland Islands in September?
Is Shetland Islands rainy in September?
Is it sunny in Shetland Islands in September?
Other cities in United Kingdom
Monthly weather in Shetland Islands
Source of the data
For this page, we’ve looked at the typical weather in Shetland Islands, based on historical hourly weather data from January 1, 1979, to December 31, 2023.
For past dates, we show actual recorded data at the location at that time. Forecasts are based on recorded weather during that day of the year, averaged over the total years for which we have records (unless stated otherwise). The daily temperature is the highest recorded temperature in the shadow during that day.