March · United Kingdom
Best time to visit Cardiff in March Weather, crowds & prices
Weather in Cardiff in March
Average temperature 7°C, 101 mm of rain, about 3 days with 6+ hours of sunshine and 90% humidity — based on the five most recent complete years of ERA5 data (2021–2025).
March score
4.8/10
Ranked #8 of 12 months
- Avg temp
- 7°C
- Rainfall
- 101 mm
- Humidity
- 90%
- Days with 6h+ sun
- 3
- Crowd Density
- Quiet / Uncrowded
- Average Expenses
- $ · Budget Friendly ($)
March in Cardiff scores 4.8/10 for sightseeing and cultural travel - ranked #8 of 12. Expect around 7°C, 101 mm of rain, and roughly 3 days with 6+ hours of sunshine this month.
Cardiff mixes a Victorian arcades core, Cardiff Castle, and bay regeneration with easy access to Welsh coast and valleys. Best window: late spring through early autumn.
March in Cardiff: expect compromises
Expect 7°C (45°F) in March. A good month for city streets, viewpoints and long meals; leave swimming for another season.
101 mm of rain signals a properly wet month, with only about 3 days with 6+ hours of sunshine to count on — build indoor options into the schedule.
That is 4.8/10 on the same scale — 8th of 12 months, versus 9/10 for the best month here.
Pack a mid-weight jacket, long sleeves and shoes you can walk 15 km in, a proper rain shell rather than an umbrella.
Expect low-season pricing, and crowds are light for this destination.
If your dates are flexible, June is materially better in Cardiff — 4.2 points higher on the same scale.
Frequently asked
- What is the weather like in Cardiff in March?
- In March, Cardiff averages 7°C, 101 mm of rain, and about 3 days with 6+ hours of sunshine. Its climate-comfort score is 4.8/10.
- Is March a good time to visit Cardiff?
- March earns a 4.8/10 climate-comfort score. Use the year-round chart to weigh the weather against your budget and crowd preferences.
- How much does it rain in Cardiff in March?
- Expect about 101 mm of rain in March. Average humidity is 90% and there are about 3 days with 6+ hours of sunshine.
Curated in Cardiff
Tickets & experiences
Things to do in Cardiff
Cardiff, United Kingdom. Live activities and tours from GetYourGuide, matched to this destination.