Cardiff in may: average Weather, Temperature and Climate
Weather in Cardiff in may 2025
The weather in Cardiff in the month of may comes from statistical datas on the last years. You can view the weather statistics for all the month, but also by using the tabs for the beginning, the middle and the end of the month.
Average weather throughout may
tolerable weather
Weather at 6am
50°F
Clear/Sunny
28% of time
28%
28%
7%
Weather at 12pm
59°F
Partly Cloudy
32% of time
28%
27%
12%
Weather at 6pm
58°F
Clear/Sunny
33% of time
31%
18%
15%
Weather at 3am
49°F
29%
25%
17%
11%
Evolution of daily average temperature and precipitation in Cardiff in may
These charts show the evolution of average minimum/maximum temperatures as well as average daily precipitation volume in Cardiff in may.
The climate of Cardiff in may is tolerable
In may in Cardiff, the climate is wet (with 2.3in of precipitation over 4 days). The weather is worst than the previous month since in april there is an average of 1.2in of precipitation over 2 days.
The climate is relatively fresh in that area the month of may, but it is endurable by dressing hot. The thermometer averaged maximum of 59°F. The minimum is 50°F. Thus, the mean temperature average on this month of may in Cardiff is 56°F. Note that seasonal normals are in contrast with those observed in Cardiff in the month of may with a maximum record of 76°F in 2010 and a minimum record of 38°F in 2011. You can hope to have about 5 days with temperatures up to 65°F, or 16% of the month.
In may in Cardiff, the days on average last 15:37. The sun rises at 04:21 and sets at 19:58.
With proper weather, the month of may is okay (but not the best) to go in Cardiff.
Cardiff: another month?
If you can push back the dates of your trip, we advise you to go in june to Cardiff. more information
Seasonal average climate and temperature of Cardiff in may
Check below seasonal norms These statistics are compiled from the weather statements earlier years of may.
| May | |||||
| Outside temperature | |||||
| Average temperature | 56°F | ||||
| Highest temperature | 59°F | ||||
| Lowest temperature | 50°F | ||||
| Highest record temperature | 76°F (2010) | ||||
| Lowest record temperature | 38°F (2011) | ||||
| Number of days at +65°F | 5 day(s) (16%) | ||||
| Number of days at -32°F | 0 day(s) (0%) | ||||
| Sea temperature | |||||
| Average sea temperature | 53°F | ||||
| Lowest sea temperature | 51°F | ||||
| Highest sea temperature | 55°F | ||||
| Wind | |||||
| Wind speed | 22km/h | ||||
| Wind temperature | 47°F | ||||
| Precipitation (rainfall) | |||||
| Rainfall | 2.3in | ||||
| Number of days with rainfall | 4 day(s) (11%) | ||||
| Record daily rainfall | 1.1in (2021) | ||||
| Snowfall | 0cm | ||||
| Other climate data | |||||
| Humidity | 88% | ||||
| Visibility | 9.19km | ||||
| Cloud cover | 47% | ||||
| UV index | 4 | ||||
| Daily sunshine hours | 13 | ||||
| Sunrise and sunset | |||||
| Time of sunrise | 04:21 | ||||
| Time of sunset | 19:58 | ||||
| Length of day | 15:37 | ||||
| Our opinion about the weather in may | |||||
| Our opinion at whereandwhen.net | tolerable | ||||
How was the weather last may?
Here is the day by day recorded weather in Cardiff in may 2024:
47°F to 58°F
50°F to 52°F
49°F to 54°F
47°F to 58°F
47°F to 58°F
50°F to 59°F
50°F to 59°F
52°F to 63°F
52°F to 63°F
54°F to 65°F
54°F to 67°F
56°F to 65°F
52°F to 59°F
52°F to 59°F
52°F to 59°F
50°F to 59°F
54°F to 63°F
56°F to 63°F
52°F to 65°F
50°F to 63°F
50°F to 59°F
54°F to 61°F
50°F to 54°F
50°F to 58°F
49°F to 59°F
52°F to 59°F
50°F to 58°F
54°F to 58°F
56°F to 59°F
54°F to 61°F
52°F to 63°F
Map: other cities in Wales in may
Cities near Cardiff:
| Barry in may | tolerable weather |
| Merthyr Tydfil in may | tolerable weather |
| Porthcawl in may | tolerable weather |
| Brecon Beacons (National Park) in may | tolerable weather |
| Swansea in may | tolerable weather |
| Llanelli in may | tolerable weather |
| Llandrindod Wells in may | tolerable weather |
| Carmarthen in may | tolerable weather |
| Newtown in may | tolerable weather |
| Aberystwyth in may | tolerable weather |
| Pembrokeshire in may | tolerable weather |
| Haverfordwest in may | tolerable weather |
Click over cities on the map for information about the weather in may.
Cardiff
perfect weather
good
tolerable
bad
very bad
Weather data for Cardiff in may:
Weather data for Cardiff for may are derived from an average of the weather forecast since 2009 in Cardiff. There is a margin of error and these forecasts are to be considered as general information only. The weather in Cardiff can vary slightly from year to year, but this data should limit surprises. So you can pack your bags or check for the best time in year to go to Cardiff.