Snowdonia National Park in may: average Weather, Temperature and Climate
Weather in Snowdonia National Park in may 2025
The weather in Snowdonia National Park 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
bad weather 105.9cm
Weather at 6am
45°F
Cloudy
27% of time
22%
19%
13%
Weather at 12pm
52°F
Clear/Sunny
26% of time
21%
21%
18%
Weather at 6pm
50°F
Clear/Sunny
27% of time
25%
21%
18%
Weather at 3am
45°F
19%
17%
16%
16%
Evolution of daily average temperature and precipitation in Snowdonia National Park in may
These charts show the evolution of average minimum/maximum temperatures as well as average daily precipitation volume in Snowdonia National Park in may.
The climate of Snowdonia National Park in may is bad
the weather in Snowdonia National Park in may is wet (with 5in of rainfall over 8 days). The situation is deteriorating compared to the previous month since in april there is an average of 3.9in of precipitation over 6 days.
The climate is quite fresh there the month of may, but it is bearable by dressing hot. The high seasonal norm is 54°F. The minimum is 45°F. Thus, the mean temperature average on this month of may in Snowdonia National Park is 49°F. Note that these seasonal averages are in contrast with those observed in Snowdonia National Park in the month of may with a maximum record of 79°F in 2010 and a minimum record of 27°F in 2021.
On this month of may, day length in Snowdonia National Park is generally 15:52. Sunrise is at 04:17 and sets at 20:09.
With an unfavorable weather, this month is not recommended to go in this locality.
May: another location in Wales?
If you want to go to Wales in may, there are destinations with better weather than Snowdonia National Park:
In may, Cardiff, Brecon Beacons (National Park), Conwy, Holyhead, Pembrokeshire and Swansea have a tolerable climate, but better than Snowdonia National Park.
Seasonal average climate and temperature of Snowdonia National Park in may
Check below seasonal norms These statistics are generated from the weather statements of the last years of the month of may.
| May | |||||
| Outside temperature | |||||
| Average temperature | 49°F | ||||
| Highest temperature | 54°F | ||||
| Lowest temperature | 45°F | ||||
| Highest record temperature | 79°F (2010) | ||||
| Lowest record temperature | 27°F (2021) | ||||
| Number of days at +65°F | 3 day(s) (10%) | ||||
| Number of days at -32°F | 0 day(s) (0%) | ||||
| Sea temperature | |||||
| Average sea temperature | 52°F | ||||
| Lowest sea temperature | 49°F | ||||
| Highest sea temperature | 54°F | ||||
| Wind | |||||
| Wind speed | 19km/h | ||||
| Wind temperature | 40°F | ||||
| Precipitation (rainfall) | |||||
| Rainfall | 5in | ||||
| Number of days with rainfall | 8 day(s) (26%) | ||||
| Record daily rainfall | 1.8in (2021) | ||||
| Snowfall | 105.9cm | ||||
| Other climate data | |||||
| Humidity | 90% | ||||
| Visibility | 8.59km | ||||
| Cloud cover | 56% | ||||
| UV index | 3 | ||||
| Daily sunshine hours | 13 | ||||
| Sunrise and sunset | |||||
| Time of sunrise | 04:17 | ||||
| Time of sunset | 20:09 | ||||
| Length of day | 15:52 | ||||
| Our opinion about the weather in may | |||||
| Our opinion at whereandwhen.net | bad | ||||
How was the weather last may?
Here is the day by day recorded weather in Snowdonia National Park in may 2024:
43°F to 56°F
47°F to 58°F
43°F to 56°F
43°F to 54°F
41°F to 52°F
45°F to 52°F
43°F to 50°F
52°F to 54°F
47°F to 54°F
58°F to 59°F
58°F to 63°F
58°F to 65°F
45°F to 58°F
56°F to 63°F
49°F to 58°F
54°F to 59°F
49°F to 59°F
49°F to 56°F
49°F to 59°F
52°F to 59°F
52°F to 59°F
49°F to 58°F
41°F to 43°F
41°F to 47°F
43°F to 52°F
47°F to 52°F
43°F to 49°F
47°F to 50°F
45°F to 52°F
45°F to 52°F
45°F to 54°F
Map: other cities in Wales in may
Cities near Snowdonia National Park:
| Conwy in may | tolerable weather |
| Llandudno in may | tolerable weather |
| Barmouth in may | tolerable weather |
| Amlwch in may | tolerable weather |
| Holyhead in may | tolerable weather |
| Buckley in may | tolerable weather |
| Aberystwyth in may | tolerable weather |
| Newtown in may | tolerable weather |
| Llandrindod Wells in may | tolerable weather |
| Fishguard in may | tolerable weather |
| Brecon Beacons (National Park) in may | tolerable weather |
| Carmarthen in may | tolerable weather |
Click over cities on the map for information about the weather in may.
Snowdonia National Park
perfect weather
good
tolerable
bad
very bad
Weather data for Snowdonia National Park in may:
Weather data for Snowdonia National Park for may are derived from an average of the weather forecast since 2009 in Snowdonia National Park. There is a margin of error and these forecasts are to be considered as general information only. The weather in Snowdonia National Park 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 Snowdonia National Park.