When your inspiration runs dry, look no further than our 2025 list of key calendar hooks — complete with plenty of Wales-specific calendar dates, holidays and events to slay your social media strategy and wider campaigns, all year long.
January | Ionawr
Year of Croeso — Visit Wales’ 2025 campaign celebrating the warm Welsh welcome
1st: Calennig | New Year’s Day
1st: Dry January begins
6th: Spring school term begins
20th: Blue Monday
24th: International Day of Education
25th: Dydd Santes Dwynwen | St. Dwynwen’s Day
29th: Chinese New Year — Year of the Earth Snake
31st: Rugby Six Nations begin
February | Chwefror
1st: LGBTQIA+ History Month begins | National Storytelling Week begins
7th: Dydd Miwsig Cymru | Welsh Language Music Day
10th: National Apprenticeship Week
13th: Galentine’s Day
14th: Valentine’s Day
17th: Random Acts of Kindness Day
20th: National Love Your Pet Day
24th: Spring half term begins
28th: Ramadan begins
TBC: Welsh Dark Skies Week
March | Mawrth
1st: Dydd Gŵyl Dewi | St. David’s Day
3rd: National Careers Week
4th: Shrove Tuesday
7th: British Science Week
8th: International Women’s Day
17th: St. Patricks Day
20th: International Day of Happiness | First Day of Spring (Spring Equinox)
21st: Red Nose Day
30th: Mother’s Day
31st: International Transgender Day of Visibility
April | Ebrill
1st: April Fool’s Day | Stress Awareness Month
7th: World Health Day
11th: National Pet Day
18th: Good Friday | UNESCO World Heritage Day
20th: Easter Sunday | Sul y Blodau
21st: Easter Monday
22nd: Earth Day
23rd: St. George’s Day
28th: Spring term begins
29th: National Gardening Week
May | Mai
1st: May Day
2nd: Machynlleth Comedy Festival begins
4th: Star Wars Day
14th: Dylan Thomas Day
22nd: Hay Festival begins
26th: Urdd Eisteddfod begins | Summer half term begins
30th: Welsh Wine Week begins
June | Mehefin
1st: Pride Month begins
5th: World Environment Day
8th: World Oceans Day
13th: Depot Live at Cardiff Castle begins (for Cardiff locals)
15th: Father’s Day
21st: Pride Cymru begins | Summer Solstice (
23rd: Lana Del Rey at Principality Stadium
30th: World Social media Day
July | Gorffennaf
1st: Plastic Free July
2nd: UEFA Women’s EURO 2025 begins
4th & 5th: OASIS at Principality Stadium
8th: Llangollen International Eisteddfod Begins
11th & 12th: Stereophonics at Principality Stadium
17th: World Emoji Day
19th: International Ras yr Wyddfa | Snowdon Race
21st: Royal Welsh Show begins
24th: International Self-Care Day
30th: International Friendship Day
August | Awst
1st: Catfish and the Bottlemen at Principality Stadium
2nd: National Eisteddfod begins
14th: Green Man Festival begins
15th: National Relaxation Day
28th: National Welsh Poetry Day
25th: Bank Holiday
September | Medi
1st: Second Hand September
8th: International Literacy Day
14th: Recycle Week
16th: Diwrnod Owain Glyndŵr Day
20th: Abergavenny Food Festival begins
21st: International Day of Peace
22nd: First day of Autumn (Autumn Equinox)
26th: Porthcawl Elvis Festival begins
27th: World Tourism Day
30th: International Podcast Day
October | Hydref
1st: Black History Month begins
4th: World Animal Day
5th: World Teachers’ Day | Cardiff Half Marathon
10th: World Mental Health Day
13th: Iriz Prize LGBTQ+ Film Festival begins
15th: Diwrnod Shwmae Sumae Day
21st: Aberfan Memorial Day
31st: Halloween
November | Tachwedd
1st: Movember begins
5th: Bonfire Night
11th: Remembrance Day
13th: World Kindness Day
15th: World Recycling Day
19th: International Men’s Day
20th: Transgender Day of Remembrance
27th: Black Friday
TBC: Autumn Nations begins
December | Rhagfyr
5th: World Volunteer Day
15th: Christmas Jumper Day
24th: Christmas Eve
25th: Christmas Day
26th: Boxing Day
31st: New Year’s Eve
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