Belfast Castle

Castle 19th-century castle overlooking Belfast's Cave Hill

Perched on Cave Hill above Belfast, Belfast Castle offers 19th-century castellated architecture, formal walled gardens and panoramic views over Belfast Lough; visitors stroll park trails, visit the café and explore nearby historic sites.

Main image
Belfast Castle
Belfast Castle, Antrim Road, Belfast BT15 5GR, Northern Ireland
54.6427, -5.9423
Public grounds generally open daylight hours; interior access varies with events
Free (grounds) - events and some interiors may have charges

How to Get to Belfast Castle #

Belfast Castle is a short drive from central Belfast via the Antrim Road; local buses run toward Cave Hill and there is parking on site. The castle can also be reached on foot from nearby residential neighborhoods for those exploring Cave Hill Country Park.

Tips for Visiting Belfast Castle #

  • Walk the grounds at golden hour for the best light on the River Lagan and Belfast skyline.
  • Combine a visit with the Cave Hill Country Park trails for panoramic viewpoints and local geological features.
  • Check the castle café and event listings - the castle hosts local cultural events and markets at times.

Best Time to Visit Belfast Castle #

Summer offers outdoor events and the best weather for grounds exploration; shoulder seasons are quieter and still pleasant.

Summer
June-August · 12-20°C (54-68°F)
Best for vistas and outdoor events on the castle grounds.
Spring and autumn
April-May, September-October · 8-15°C (46-59°F)
Quieter walks and good light for photography; trails on Cave Hill are pleasant.

Weather & Climate near Belfast Castle #

Climate

Belfast Castle's climate is classified as Oceanic - Oceanic climate with cool summers (peaking in July) and cold winters (coldest in January). Temperatures range from 1°C to 19°C. Abundant rainfall (1123 mm/year), wettest in January.

Air Quality: AQI 31 Good
Best Time to Visit
JuneJulyAugust
Temperature & Rainfall
Temperature Range
25°
Warmest Month
-5°
Coldest Month
Monthly Conditions

January

January is the coolest month with highs of 6°C and lows of 1°C. The wettest month with heavy rain (117 mm), mostly overcast skies, and breezy conditions.

36 Poor

Comfort

Feels Like Cold
C
Temperature
94%
Humidity
Very Humid

Weather

117 mm
Rainfall
8.4 m/s
Wind
Breezy
0.0
UV Index
Low
7.7h daylight

February

February is cold with highs of 7°C and lows of 1°C. Regular rainfall (80 mm), mostly overcast skies, and breezy conditions.

40 Poor

Comfort

Feels Like Cold
C
Temperature
92%
Humidity
Very Humid

Weather

80 mm
Rainfall
8.1 m/s
Wind
Breezy
0.1
UV Index
Low
9.5h daylight

March

March is cold with highs of 8°C and lows of 2°C. Regular rainfall (96 mm), mostly overcast skies, and breezy conditions.

42 Poor

Comfort

Feels Like Cold
C
Temperature
90%
Humidity
Very Humid

Weather

96 mm
Rainfall
7.6 m/s
Wind
Breezy
0.3
UV Index
Low
11.7h daylight

April

April is cold with highs of 11°C and lows of 3°C. Moderate rainfall (74 mm), mostly overcast skies, and breezy conditions.

52 Acceptable

Comfort

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

Weather

74 mm
Rainfall
6.4 m/s
Wind
Breezy
0.7
UV Index
Moderate
13.9h daylight

May

May is cool with highs of 14°C and lows of 6°C. Moderate rainfall (66 mm) and mostly overcast skies.

56 Acceptable

Comfort

10°
Feels Like Cool
10°C
Temperature
15°
84%
Humidity
Very Humid

Weather

66 mm
Rainfall
5.9 m/s
Wind
Light Breeze
1.1
UV Index
High
15.8h daylight

June

June is cool with highs of 17°C and lows of 9°C. Moderate rainfall (73 mm) and mostly overcast skies.

64 Good

Comfort

13°
Feels Like Cool
13°C
Temperature
17°
84%
Humidity
Very Humid

Weather

73 mm
Rainfall
5.5 m/s
Wind
Light Breeze
1.3
UV Index
High
16.9h daylight

July

July is cool with highs of 19°C and lows of 11°C. Regular rainfall (81 mm) and mostly overcast skies.

62 Good

Comfort

15°
Feels Like Cool
15°C
Temperature
11° 19°
85%
Humidity
Very Humid

Weather

81 mm
Rainfall
5.2 m/s
Wind
Light Breeze
1.2
UV Index
High
16.4h daylight

August

August is cool with highs of 18°C and lows of 10°C. Regular rainfall (96 mm) and mostly overcast skies.

62 Good

Comfort

14°
Feels Like Cool
14°C
Temperature
10° 18°
87%
Humidity
Very Humid

Weather

96 mm
Rainfall
5.4 m/s
Wind
Light Breeze
0.9
UV Index
Moderate
14.7h daylight

September

September is cool with highs of 15°C and lows of 8°C. Significant rainfall (104 mm), mostly overcast skies, and breezy conditions.

58 Acceptable

Comfort

12°
Feels Like Cool
12°C
Temperature
15°
89%
Humidity
Very Humid

Weather

104 mm
Rainfall
6.2 m/s
Wind
Breezy
0.6
UV Index
Moderate
12.5h daylight

October

October is cold with highs of 12°C and lows of 6°C. The wettest month with heavy rain (117 mm), mostly overcast skies, and breezy conditions.

48 Poor

Comfort

Feels Like Cold
C
Temperature
12°
91%
Humidity
Very Humid

Weather

117 mm
Rainfall
7.3 m/s
Wind
Breezy
0.2
UV Index
Low
10.3h daylight

November

November is cold with highs of 8°C and lows of 3°C. Significant rainfall (109 mm), mostly overcast skies, and breezy conditions.

40 Poor

Comfort

Feels Like Cold
C
Temperature
93%
Humidity
Very Humid

Weather

109 mm
Rainfall
7.7 m/s
Wind
Breezy
0.1
UV Index
Low
8.3h daylight

December

December is cold with highs of 6°C and lows of 2°C. Significant rainfall (110 mm), mostly overcast skies, and breezy conditions.

36 Poor

Comfort

Feels Like Cold
C
Temperature
94%
Humidity
Very Humid

Weather

110 mm
Rainfall
7.9 m/s
Wind
Breezy
0.0
UV Index
Low
7.1h daylight

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