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Castle · near Dunoon · Argyll and Bute

Knockamillie Castle

Knockamillie Castle is an architectural structure in Argyll and Bute. The site is 2.9 km south of Dunoon. It counts as a scheduled monument.

Where
2.9 km
south of Dunoon
Warmest months
Jun–Aug
highs of 15–17°C
In brief

Castle near Dunoon

Just outside Dunoon

Knockamillie Castle is 2.9 km south of Dunoon. Towns near it ↓

Scheduled monument

On the official list of protected heritage; Dunoon has 27 listed buildings in all, on its History page. About ↓

Written from OpenStreetMap, Wikidata, NRS’s localities and Met Office 1991–2020 averages.

When to go

Warm months and wet ones

Warmest in Dunoon are June to August, at 15–17°C.

Jan7° / 2°270 mm
Feb6° / 1°228 mm
Mar7° / 1°204 mm
Apr10° / 3°145 mm
May13° / 5°129 mm
Jun15° / 8°137 mm
Jul17° / 10°156 mm
Aug17° / 10°184 mm
Sep15° / 8°183 mm
Oct11° / 6°259 mm
Nov8° / 3°269 mm
Dec6° / 1°286 mm
Green months are the warmest. Typical afternoon highs and night lows in Dunoon, and rain in a month. Met Office HadUK-Grid 1991–2020 averages for Dunoon. Opening times change through the year: check before you go. Dunoon’s full climate →
About

Knockamillie Castle

A short trip away is Rothesay Castle, 9.1 km off, the first of 23 within 15 km.

Dunoon’s listed buildings and monuments →

Type
Castle
Listed
Scheduled monument
Town
2.9 km south of Dunoon
Facts: Wikidata (CC0) and OpenStreetMap (© OpenStreetMap contributors).
The map

Knockamillie Castle on the map

Spot Knockamillie Castle in orange, then follow the numbers to the places below.

12345678

© OpenStreetMap contributors · NRS locality 2022

Towns near it

Towns within reach of Knockamillie Castle

These are the towns that list it, beginning with its own.

1 · 2.9 km north of it

Dunoon

7,982 people · 8 places to visit

Make a day of it

Worth adding to a visit

Nearby, 23 places within 15 km include 5 castles, a historic house and a museum.

1CastleRothesay Castle9.1 km away2CastleArdgowan Castle5.6 km away3Historic houseMount Stuart House12 km away4CastleCastle Levan8.3 km away5CastleSkelmorlie Castle6.7 km away6CastleKames Castle9.5 km away7MuseumMcLean Museum and Art Gallery13 km away8GardenGardenBenmore Botanic Garden15 km away

Within 15 km, close and well known first. Numbers match the map.

Questions about Knockamillie Castle

Where is Knockamillie Castle?

Knockamillie Castle is 2.9 km south of Dunoon, Argyll and Bute.

What is Knockamillie Castle?

Architectural structure in Argyll and Bute, Scotland, UK.

When is the best time to visit Knockamillie Castle?

June to August are the warmest months in Dunoon, with afternoon highs of 15–17°C (Met Office 1991–2020 averages).

Is Knockamillie Castle a listed building?

Yes: scheduled monument.

What else is there to see near Knockamillie Castle?

Within 15 km: Rothesay Castle (9.1 km), Ardgowan Castle (5.6 km), Mount Stuart House (12 km) and Castle Levan (8.3 km).

Places: OpenStreetMap (© OpenStreetMap contributors, Open Database Licence) and Wikidata (CC0), placed in the NRS 2022 locality (Open Government Licence v3.0). Visitor counts are the latest Wikidata gives, with their year.

Photos: each place’s Wikidata image, from Wikimedia Commons under the licence below (our copy, resized).

Photo credits (7)

Contains public sector information licensed under the Open Government Licence v3.0. Contains HM Land Registry data © Crown copyright and database right 2026. Contains OS data © Crown copyright and database right 2026 (ONS boundaries). Northern Ireland: Source: NISRA; contains Land & Property Services data and Ordnance Survey of Northern Ireland information, © Crown copyright, licensed under the Open Government Licence v3.0. Scotland: contains National Records of Scotland data, Registers of Scotland data and SEPA data, © Crown copyright / © SEPA 2025, licensed under the Open Government Licence v3.0.