Worst time to visit Cardiff

Some months in Cardiff are clearly tougher for travel — extreme heat, cold, drenching rain, or peak storm season. Here's what to skip.

Country
🇬🇧 United Kingdom
Region
Europe
Hottest
July 21°C
Coldest
January 3°C low
Wettest
December 18 rain days
Driest
April 10 rain days

Months to avoid

MonthWhy
Januaryvery wet (17 rain days)
Februaryvery wet (14 rain days)
Marchvery wet (16 rain days)
Julyvery wet (14 rain days)
Augustvery wet (15 rain days)
Octobervery wet (15 rain days)
Novembervery wet (16 rain days)
Decemberextremely wet (18 rain days)

What to expect in the worst months

December. 18 rain days out of 31 means roughly 58% of days see measurable rainfall — plan flexible indoor backups for every outdoor day.

January. 17 rain days out of 31 means roughly 55% of days see measurable rainfall — plan flexible indoor backups for every outdoor day.

February. 14 rain days out of 28 means roughly 50% of days see measurable rainfall — plan flexible indoor backups for every outdoor day.

Better times to go

No month in Cardiff hits the typical 18–28 °C / low-rain comfort zone — every season has trade-offs. Choose what you can tolerate: heat, cold, rain, or storm risk.

Better in the same region in December

If you're set on Europe in December, these cities have more comfortable conditions in the same window:

If you still have to go — what to bring

Related Cardiff guides

See the best time to visit Cardiff →

The positive counterpart: which months are great and why.