When to go · South Stack
South Stack in December
Avoid month. Listed as a month to avoid: Nov–Feb (short days, wind and rain, lighthouse access closed).
Key facts
- Verdict
- Avoid
- Temperature
- 9°C (48°F)48°F (9°C) / 4°C (39°F)39°F (4°C)
- average high / low
- Rain days
- 15
- Crowds
- Medium
- United Kingdom overall
- Prices
- High
- United Kingdom overall
Verdict
Listed as a month to avoid: Nov–Feb (short days, wind and rain, lighthouse access closed).
Is another month better than December?
December is rated avoid. These months rate higher:
- AprilGreatInside South Stack's best window: Apr–Jul for seabirds; May–Sep for walking weather.
- MayGreatInside South Stack's best window: Apr–Jul for seabirds; May–Sep for walking weather.
- JuneGreatInside South Stack's best window: Apr–Jul for seabirds; May–Sep for walking weather.
- JulyGreatInside South Stack's best window: Apr–Jul for seabirds; May–Sep for walking weather.
Weather in December
- South StackHighs around 9 °C (48 °F), lows around 4 °C (39 °F), rain on about 15 daysHighs around 48 °F (9 °C), lows around 39 °F (4 °C), rain on about 15 days
Festivals and holidays
Dates as our data lists them. Moving holidays (lunar and Islamic calendars, Easter) shift every year: check the date for your year before you build a trip on it.
Christmas Day and Boxing Day (substitute 28 Dec) big impact
25–28 Dec 2026 · United Kingdom
No trains or Tube on Christmas Day; reduced service on Boxing Day; most shops and sights closed on the 25th.
Crowds and prices
- Crowds · United Kingdom overall
- Medium
- Prices · United Kingdom overall
- High
United Kingdom overall: Christmas markets and shows; transport stops on the 25th and hotels spike around New Year.
High-price month: see what to book ahead.
Compare two months
Weather, crowds and prices for any two months in South Stack, side by side.
Verdict
Dec: Avoid
Apr: Great (better)
Daytime high
Dec: 9 °C (48 °F)48 °F (9 °C)
Apr: 11 °C (52 °F)52 °F (11 °C)
Night low
Dec: 4 °C (39 °F)39 °F (4 °C)
Apr: 5 °C (41 °F)41 °F (5 °C)
Rain days
Dec: 15
Apr: 11 (better)
Crowds
Dec: Medium
Apr: Medium
Prices
Dec: High
Apr: Medium
Festivals listed
Dec: 1
Apr: 0
December: Listed as a month to avoid: Nov–Feb (short days, wind and rain, lighthouse access closed).
April: Inside South Stack's best window: Apr–Jul for seabirds; May–Sep for walking weather.
South Stack: figures are long-term averages from this guide, not a forecast.
What to pack
- A warm coat, hat and gloves for mornings and evenings
- A rain jacket or umbrella and shoes that dry fast