Seil

Island Small inner Hebridean island near Jura, Scotland

A small island off Scotland’s west coast, Seil offers coastal walks, rocky shorelines and local slate-quarrying history; visitors use it as a base for boat trips and to explore nearby sea routes.

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Seil (often spelled Seil) is an island in western Scotland that is part of the Slate Islands off the Argyll coast. The island is small, inhabited and has a history tied to local slate quarrying.

The island contains small villages and harbours and is linked to neighbouring shores by a single stone bridge that crosses a narrow tidal channel. Walking routes follow old quarry paths and coastal tracks around sheltered bays.

The island’s settlement pattern and buildings reflect its 18th- and 19th-century slate industry, with compact villages close to former quarries and slipways. Quarrying shaped the island economy before modern shifts to fishing and tourism.

Seil lies in the Inner Hebridean waters of Argyll and Bute, west of mainland Scotland and close to other small slate-producing islands; the nearest larger town on the mainland is Oban, reached by road and ferry connections.

  • Heritage: Part of the Slate Islands group in Argyll and Bute, the island has a heritage of slate quarrying and associated settlements.

What to See #

  • Clachan Bridge: Clachan Bridge, commonly called the "Bridge over the Atlantic," links the island to the neighbouring shore over a narrow tidal channel and is a local landmark.
  • Villages: Ellenabeich and Clachan are principal settlements on the island, historically connected to the 19th-century slate quarrying industry.
Seil
Seil (island), Argyll and Bute / Inner Hebrides area, Scotland, United Kingdom
56.3000, -5.6500

Tips for Visiting Seil #

  • Plan visits in the calmer months and start early in the day-roads on and between Scottish islands like Seil are narrow and single-track, so mornings are quieter for sightseeing and photography.
  • Make the Clachan Bridge ('Bridge over the Atlantic') your first stop and then follow coastal footpaths; many visitors linger only at the bridge and miss secluded coves and old slate workings along the shoreline.
  • Use local shops and cafés in village centres for supplies and check opening times-amenities on small Hebridean/inner-Hebridean islands are limited and close early.

Best Time to Visit Seil #

Late spring to early autumn offers the best weather and easiest travel; expect frequent rain and wind year‑round compared with lowland Britain.

Summer
June-August · 8-18°C (approx.)
The warmest and sunniest period with the best conditions for coastal walks and island exploration, though midges and changeable weather remain possible.
Shoulder seasons
April-May, September-October · 5-12°C (approx.)
Cooler, often crisp days with fewer visitors-good for quieter walks but expect more rain and wind than inland.
Winter
November-March · 0-8°C (approx.)
Cold, wet and windy conditions are common; many services are reduced and days are short.

Weather & Climate near Seil #

Climate

Continental climate with cool summers (peaking in July) and cold winters (coldest in February). Temperatures range from 4°C to 17°C. Abundant rainfall (1706 mm/year), wettest in January.

Best Time to Visit
JuneJulyMay
Temperature & Rainfall
Temperature Range
23°
Warmest Month
-8°
Coldest Month
Monthly Conditions

January

January is cold with highs of 8°C and lows of 4°C. The wettest month with heavy rain (207 mm), mostly overcast skies, and breezy conditions.

32 Poor

Comfort

Feels Like Cold
C
Temperature
92%
Humidity
Very Humid

Weather

207 mm
Rainfall
7.1 m/s
Wind
Breezy
0.0
UV Index
Low
7.4h daylight

February

February is the coolest month with highs of 8°C and lows of 4°C. Significant rainfall (125 mm), mostly overcast skies, and breezy conditions.

36 Poor

Comfort

Feels Like Cold
C
Temperature
91%
Humidity
Very Humid

Weather

125 mm
Rainfall
7.0 m/s
Wind
Breezy
0.1
UV Index
Low
9.3h daylight

March

March is cold with highs of 9°C and lows of 4°C. Significant rainfall (154 mm), mostly overcast skies, and breezy conditions.

34 Poor

Comfort

Feels Like Cold
C
Temperature
89%
Humidity
Very Humid

Weather

154 mm
Rainfall
6.5 m/s
Wind
Breezy
0.3
UV Index
Low
11.7h daylight

April

April is cold with highs of 11°C and lows of 5°C. Regular rainfall (91 mm) and mostly overcast skies.

52 Acceptable

Comfort

Feels Like Cold
C
Temperature
11°
87%
Humidity
Very Humid

Weather

91 mm
Rainfall
5.3 m/s
Wind
Light Breeze
0.6
UV Index
Moderate
14.0h daylight

May

May is cool with highs of 14°C and lows of 8°C. Moderate rainfall (74 mm) and mostly overcast skies.

56 Acceptable

Comfort

11°
Feels Like Cool
11°C
Temperature
14°
85%
Humidity
Very Humid

Weather

74 mm
Rainfall
4.8 m/s
Wind
Light Breeze
0.9
UV Index
Moderate
16.2h daylight

June

June is cool with highs of 15°C and lows of 10°C. Regular rainfall (82 mm) and mostly overcast skies.

60 Good

Comfort

13°
Feels Like Cool
13°C
Temperature
10° 15°
85%
Humidity
Very Humid

Weather

82 mm
Rainfall
4.7 m/s
Wind
Light Breeze
1.1
UV Index
High
17.3h daylight

July

July is cool with highs of 17°C and lows of 12°C. Significant rainfall (103 mm) and mostly overcast skies.

58 Acceptable

Comfort

14°
Feels Like Cool
14°C
Temperature
12° 17°
87%
Humidity
Very Humid

Weather

103 mm
Rainfall
4.4 m/s
Wind
Light Breeze
1.0
UV Index
High
16.8h daylight

August

August is cool with highs of 17°C and lows of 12°C. Significant rainfall (127 mm) and mostly overcast skies.

56 Acceptable

Comfort

14°
Feels Like Cool
14°C
Temperature
12° 17°
88%
Humidity
Very Humid

Weather

127 mm
Rainfall
4.4 m/s
Wind
Light Breeze
0.8
UV Index
Moderate
14.9h daylight

September

September is cool with highs of 15°C and lows of 10°C. Significant rainfall (172 mm) and mostly overcast skies.

54 Acceptable

Comfort

13°
Feels Like Cool
13°C
Temperature
10° 15°
89%
Humidity
Very Humid

Weather

172 mm
Rainfall
5.1 m/s
Wind
Light Breeze
0.5
UV Index
Low
12.6h daylight

October

October is cool with highs of 13°C and lows of 8°C. Significant rainfall (187 mm) and mostly overcast skies.

46 Poor

Comfort

10°
Feels Like Cool
10°C
Temperature
13°
90%
Humidity
Very Humid

Weather

187 mm
Rainfall
5.9 m/s
Wind
Light Breeze
0.2
UV Index
Low
10.2h daylight

November

November is cold with highs of 10°C and lows of 6°C. Significant rainfall (193 mm), mostly overcast skies, and breezy conditions.

42 Poor

Comfort

Feels Like Cold
C
Temperature
10°
91%
Humidity
Very Humid

Weather

193 mm
Rainfall
6.4 m/s
Wind
Breezy
0.0
UV Index
Low
8.0h daylight

December

December is cold with highs of 8°C and lows of 4°C. Significant rainfall (191 mm), mostly overcast skies, and breezy conditions.

34 Poor

Comfort

Feels Like Cold
C
Temperature
92%
Humidity
Very Humid

Weather

191 mm
Rainfall
6.3 m/s
Wind
Breezy
0.0
UV Index
Low
6.7h daylight

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