Stornoway Airport - Climate Station (Na h-Eileanan Siar) Location-specific long-term averages

Location-specific long-term averages

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UK climate stations

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Station: Stornoway Airport, 1961-1990

Station: Stornoway Airport

Month Maximum temperature (°C) Minimum temperature (°C) Days of air frost (days) Sunshine (hours) Rainfall (mm) Days of rainfall ≥1 mm (days) Monthly mean wind speed at 10 m (knots)
January 7.48 2.73 4.67 32.79 145.24 20.63 14.31
February 7.50 2.44 4.80 61.48 111.88 18.33 14.12
March 8.50 3.15 3.87 107.66 105.31 17.87 13.21
April 10.44 4.57 1.40 155.87 74.38 15.47 11.56
May 12.61 6.35 0.40 205.10 69.00 14.00 10.74
June 14.49 9.05 0.00 162.27 64.60 13.10 10.55
July 16.31 10.83 0.00 138.35 74.46 14.03 9.70
August 16.35 10.95 0.00 132.98 87.56 15.00 9.81
September 14.74 9.46 0.00 109.80 103.57 16.18 10.88
October 12.02 6.95 0.17 78.31 132.64 20.33 12.29
November 9.53 4.53 1.37 44.99 127.60 20.77 12.60
December 7.82 2.82 5.47 26.71 139.28 20.67 13.12
Annual 11.50 6.17 22.15 1256.31 1235.52 206.38 11.90

District: Scotland N, 1991-2020

District: Scotland N

Month Maximum temperature (°C) Minimum temperature (°C) Days of air frost (days) Sunshine (hours) Rainfall (mm) Days of rainfall ≥1 mm (days) Monthly mean wind speed at 10 m (knots)
January 5.46 0.32 14.11 28.24 200.59 20.21 13.27
February 5.72 0.12 13.68 57.23 159.66 18.10 13.45
March 7.22 1.08 11.34 91.72 140.68 18.03 12.51
April 9.82 2.67 6.54 135.83 101.90 15.27 11.39
May 12.75 4.71 2.99 176.54 95.89 14.56 10.21
June 14.78 7.58 0.31 137.26 92.77 14.42 9.68
July 16.49 9.46 0.01 125.78 101.28 15.63 9.24
August 16.24 9.40 0.04 122.45 122.41 16.44 9.32
September 14.21 7.74 0.37 99.07 136.83 16.30 10.30
October 10.83 4.99 2.77 67.60 180.28 19.60 11.36
November 7.70 2.40 7.88 38.95 176.75 20.00 12.28
December 5.68 0.34 14.08 22.53 192.34 20.11 11.98
Annual 10.60 4.26 74.14 1103.19 1701.38 208.68 11.24

Region: Scotland, 1991-2020

Region: Scotland

Month Maximum temperature (°C) Minimum temperature (°C) Days of air frost (days) Sunshine (hours) Rainfall (mm) Days of rainfall ≥1 mm (days) Monthly mean wind speed at 10 m (knots)
January 5.55 0.34 14.12 35.22 177.89 18.48 12.61
February 5.95 0.26 13.27 63.43 140.74 16.10 12.74
March 7.63 1.19 11.00 97.39 124.48 15.92 11.96
April 10.31 2.78 6.05 141.59 93.01 13.70 10.88
May 13.37 4.98 2.50 182.15 89.19 13.38 9.96
June 15.59 7.87 0.19 146.24 92.91 13.75 9.33
July 17.29 9.70 0.01 140.48 103.66 14.92 8.90
August 16.96 9.61 0.02 134.54 120.03 15.51 8.98
September 14.78 7.88 0.32 106.56 123.36 14.85 9.94
October 11.27 5.14 2.69 74.71 168.24 17.96 10.87
November 7.97 2.49 7.81 47.57 165.23 18.48 11.62
December 5.82 0.37 13.73 29.75 173.94 18.22 11.50
Annual 11.07 4.41 71.70 1199.63 1572.66 191.28 10.76

UK 1991-2020

UK

Month Maximum temperature (°C) Minimum temperature (°C) Days of air frost (days) Sunshine (hours) Rainfall (mm) Days of rainfall ≥1 mm (days) Monthly mean wind speed at 10 m (knots)
January 6.66 1.21 11.32 47.45 121.48 15.43 10.77
February 7.16 1.13 10.69 71.86 96.15 13.18 10.77
March 9.22 2.19 7.84 109.18 85.07 12.68 10.28
April 12.03 3.76 4.03 155.32 71.71 11.59 9.33
May 15.13 6.26 1.20 192.15 70.96 11.24 8.77
June 17.68 9.08 0.07 171.49 77.19 11.51 8.17
July 19.62 11.02 0.00 173.44 82.46 12.25 7.86
August 19.30 10.97 0.01 161.72 93.75 12.89 7.89
September 16.85 9.05 0.12 127.51 90.90 12.08 8.41
October 13.08 6.42 1.64 91.85 122.52 14.83 9.29
November 9.41 3.56 5.51 57.95 123.34 15.81 9.74
December 7.02 1.42 10.95 42.68 127.16 15.60 10.04
Annual 12.79 5.53 53.38 1402.61 1162.68 159.08 9.27
Climate averages notes

This webpage provides long-term climate averages for specific locations across the UK. It is designed to display locations that provide even geographical coverage of the UK, but is not reflective of every weather station that has existed or the current Met Office observation network. More detailed information on the data available at these locations is below, and data is available for a number of climate variables, including temperature, frost, sunshine and rainfall. 

For long-term data on the UK's climate as a whole or by region, you can download this directly on the UK and regional series webpage. 

Find out more about the Met Office's current observation network. 

By searching for a location or selecting a climate station on the map above, you can view climate averages for the 30-year periods 1991-2020 and 1961-1990. If you require climate averages for another period such as 1981-2010, please contact us. 

The averages are available across a range of climate variables and in the following formats:

Averages table

The averages table shows 30-year averages for the nearest / most similar climate station to your chosen location. Tables below show averages for districts, regions and the UK. Some stations may not have all climate variables available.

Averages graphs

The graph provides an alternative representation of the average data for your chosen location. By moving your mouse cursor over the graph you can see the average figures for your chosen climate variable for each month. The graph also includes 20th and 80th percentile values. We would expect, on average, one year in every five to be below the 20th percentile value, and one year in every five to be above the 80th percentile value.

Location comparison

The comparison graphs enable you to compare the averages for two chosen locations. For example, you can see if one location is, on average, significantly warmer, drier, or sunnier than the other.

Averages maps

These maps enable you to view maps of monthly, seasonal and annual averages for the UK. The maps are based on the 1km resolution HadUK-Grid dataset derived from station data.

Where stations are currently closed in this dataset, well-correlated observations from other nearby stations are used to help inform latest long-term average figures in order to preserve the long-term usability of the data. Similar peer-reviewed scientific methods are used by meteorological organisations around the world to maintain the continuity of long-term datasets.