Holy Island, Firth of Clyde

Island Tidal island near Arran, important bird habitat

Off the east coast of Arran near Lamlash, Holy Isle is a small island with coastal walks, seabird colonies and a retreat centre. Visitors come by boat for wildlife, beaches and guided island tours.

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Holy Island (often called Holy Isle) is a small island in the Firth of Clyde off the east coast of the Isle of Arran, Scotland. It contains archaeological remains and has been used for religious settlement since the early medieval period.

The island combines historical sites with protected natural habitats - seabird colonies, coastal heath and areas used by seals are notable. Recreational visitors walk the island’s tracks, visit the ruins, and use viewpoints along coastal paths.

Historic association of the island includes early Christian monastic activity linked to St. Molaise. In more recent decades parts of the island have been managed for conservation and retreat use while retaining priority for wildlife protection.

Holy Isle lies a short boat crossing from the village of Lamlash on Arran and is visible from the eastern shore of the island; it sits within the Firth of Clyde maritime landscape.

  • Ferry access: Served by seasonal passenger ferry services from Lamlash on the Isle of Arran; landing facilities are limited and visitors should check timetables and local guidance before traveling.

What to See #

  • Monastic remains: Ruins and archaeological traces of an early medieval monastery associated with St. Molaise sit on the island and reflect its long-standing religious associations.
  • Nature reserve and access: Designated nature reserve areas support seabird colonies, seal haul-outs and maritime heath; established footpaths circle much of the island and landing is by scheduled passenger boats from the nearby mainland harbour at Lamlash on the Isle of Arran.
Holy Island, Firth of Clyde
55.5251, -5.0731

How to Get to Holy Island, Firth of Clyde #

Access depends on local ferry services or private boat; schedules vary by season. Nearest mainland harbours in the Firth of Clyde run services to various islands-check local ferry timetables.

Tips for Visiting Holy Island, Firth of Clyde #

  • The Holy Island in the Firth of Clyde is tidal-check local charts and tide times if approaching by small boat.
  • Wear warm clothing; the maritime climate can be windy and changeable even on sunny days.
  • Respect any private land signs and farmland-some islands have restricted areas.

Best Time to Visit Holy Island, Firth of Clyde #

Summer provides the most pleasant weather for island visits; check tidal access.

Summer
Jun-Aug · 10-20°C
Best weather for coastal walks and seabird watching.
Late spring/early autumn
May, Sep · 8-15°C
Fewer midges and quieter harbours.

Weather & Climate near Holy Island, Firth of Clyde #

Climate

Continental climate with cool summers (peaking in August) and cold winters (coldest in February). Temperatures range from 3°C to 18°C. Abundant rainfall (1303 mm/year), wettest in January.

Best Time to Visit
JuneJulySeptember
Temperature & Rainfall
Temperature Range
25°
Warmest Month
-3°
Coldest Month
Monthly Conditions

January

January is cold with highs of 8°C and lows of 3°C. The wettest month with heavy rain (145 mm), mostly overcast skies, and breezy conditions.

36 Poor

Comfort

Feels Like Cold
C
Temperature
90%
Humidity
Very Humid

Weather

145 mm
Rainfall
7.8 m/s
Wind
Breezy
0.0
UV Index
Low
7.6h daylight

February

February is the coolest month with highs of 7°C and lows of 3°C. Regular rainfall (98 mm), mostly overcast skies, and breezy conditions.

42 Poor

Comfort

Feels Like Cold
C
Temperature
90%
Humidity
Very Humid

Weather

98 mm
Rainfall
7.2 m/s
Wind
Breezy
0.1
UV Index
Low
9.4h daylight

March

March is cold with highs of 8°C and lows of 4°C. Significant rainfall (111 mm), mostly overcast skies, and breezy conditions.

40 Poor

Comfort

Feels Like Cold
C
Temperature
88%
Humidity
Very Humid

Weather

111 mm
Rainfall
6.9 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. Moderate rainfall (71 mm) and mostly overcast skies.

54 Acceptable

Comfort

Feels Like Cold
C
Temperature
11°
85%
Humidity
Very Humid

Weather

71 mm
Rainfall
5.6 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 7°C. Moderate rainfall (66 mm) and mostly overcast skies.

56 Acceptable

Comfort

11°
Feels Like Cool
11°C
Temperature
14°
83%
Humidity
Very Humid

Weather

66 mm
Rainfall
5.2 m/s
Wind
Light Breeze
1.0
UV Index
High
16.0h daylight

June

June is cool with highs of 16°C and lows of 10°C. Moderate rainfall (77 mm) and mostly overcast skies.

60 Good

Comfort

13°
Feels Like Cool
13°C
Temperature
10° 16°
84%
Humidity
Very Humid

Weather

77 mm
Rainfall
5.0 m/s
Wind
Light Breeze
1.2
UV Index
High
17.1h daylight

July

July is cool with highs of 18°C and lows of 12°C. Regular rainfall (87 mm) and mostly overcast skies.

60 Good

Comfort

15°
Feels Like Cool
15°C
Temperature
12° 18°
85%
Humidity
Very Humid

Weather

87 mm
Rainfall
4.7 m/s
Wind
Light Breeze
1.1
UV Index
High
16.6h daylight

August

August is cool with highs of 18°C and lows of 12°C. Significant rainfall (106 mm) and mostly overcast skies.

58 Acceptable

Comfort

15°
Feels Like Cool
15°C
Temperature
12° 18°
86%
Humidity
Very Humid

Weather

106 mm
Rainfall
4.9 m/s
Wind
Light Breeze
0.9
UV Index
Moderate
14.8h daylight

September

September is cool with highs of 15°C and lows of 10°C. Significant rainfall (122 mm) and mostly overcast skies.

60 Good

Comfort

13°
Feels Like Cool
13°C
Temperature
10° 15°
87%
Humidity
Very Humid

Weather

122 mm
Rainfall
5.7 m/s
Wind
Light Breeze
0.5
UV Index
Moderate
12.6h daylight

October

October is cool with highs of 12°C and lows of 8°C. Significant rainfall (137 mm), mostly overcast skies, and breezy conditions.

48 Poor

Comfort

10°
Feels Like Cool
10°C
Temperature
13°
88%
Humidity
Very Humid

Weather

137 mm
Rainfall
6.3 m/s
Wind
Breezy
0.2
UV Index
Low
10.3h daylight

November

November is cold with highs of 10°C and lows of 5°C. Significant rainfall (139 mm), mostly overcast skies, and breezy conditions.

46 Poor

Comfort

Feels Like Cold
C
Temperature
10°
89%
Humidity
Very Humid

Weather

139 mm
Rainfall
6.7 m/s
Wind
Breezy
0.1
UV Index
Low
8.1h daylight

December

December is cold with highs of 8°C and lows of 4°C. Significant rainfall (144 mm), mostly overcast skies, and breezy conditions.

36 Poor

Comfort

Feels Like Cold
C
Temperature
90%
Humidity
Very Humid

Weather

144 mm
Rainfall
7.0 m/s
Wind
Breezy
0.0
UV Index
Low
6.9h daylight

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