Snowdonia National Park Climate and Average Weather
Climate of Snowdonia National Park: average temperatures, rainfall and seasons month by month.
Climate in Snowdonia National Park month by month
Average high, average low and total rainfall, based on three years of reanalysis data.
| Month | Avg high | Avg low | Rainfall | Rating |
|---|---|---|---|---|
| January | 43° | 35° | 7,7 in | ★☆☆☆☆ |
| February | 46° | 38° | 7,6 in | ★★☆☆☆ |
| March | 50° | 39° | 5,5 in | ★★☆☆☆ |
| April | 55° | 42° | 5,9 in | ★★★☆☆ |
| May | 60° | 47° | 4,4 in | ★★★★☆ |
| June | 62° | 52° | 7,0 in | ★★★☆☆ |
| July | 65° | 54° | 3,9 in | ★★★★☆ |
| August | 64° | 54° | 5,4 in | ★★★★☆ |
| September | 62° | 51° | 8,7 in | ★★★☆☆ |
| October | 56° | 47° | 7,9 in | ★★☆☆☆ |
| November | 49° | 41° | 9,0 in | ★★☆☆☆ |
| December | 47° | 41° | 12,1 in | ★☆☆☆☆ |
Climate type: Temperate. Source: Open-Meteo archive (ERA5).
Recent extremes in Snowdonia National Park
Highest and lowest readings observed in the last 3 years of reanalysis data - not all-time records.
How Snowdonia National Park compares with nearby places
Annual averages, and the difference against Snowdonia National Park.
| Place | Distance | Avg temp | vs here | Annual rain |
|---|---|---|---|---|
| Liverpool | 53 mi | 52°F | +34°F warmer | 46 in |
| Merseyside | 53 mi | 52°F | +34°F warmer | 46 in |
| Greater Manchester | 82 mi | 52°F | +34°F warmer | 48 in |
| Manchester | 82 mi | 52°F | +34°F warmer | 48 in |
| Lancashire | 84 mi | 50°F | about the same | 59 in |
Best time to visit Snowdonia National Park
Go in July and August. These months score highest on comfortable temperatures, low rainfall and useful daylight.
Hardest months: January, November and December - expect the least comfortable mix of heat, cold or rain.
What this means for Snowdonia National Park
Today is slightly warmer than average for August. The forecast high of 68°F is 3.6°F above the 64°F typical for this month.
Rain is very unlikely today - plans do not need a backup.
No weather-related travel disruption is expected today. Roads and airports should run normally.
Northern Hemisphere, so peak summer falls in June to August.
The gap between the warmest and coldest month averages 53°F.
What to pack, what to skip
- Layers - the daily swing is 61°F, so mornings feel nothing like afternoons
- A packable rain shell - 4 of the next 7 days carry a real chance of rain
- If your dates are flexible, avoid January, November and December - historically the least comfortable months here.
Summary
Snowdonia National Park is a national park in Gwynedd. Snowdonia National Park is a national park known for Wales' highest peaks and slate valleys.
Right now it is 45°F (7°C) in Snowdonia National Park with clear. It feels like 42°F. Today runs from 45°F to 68°F. Chance of precipitation is 6%. Sightseeing conditions score 8.3/10 - good conditions.
The best time to visit Snowdonia National Park is July and August. The climate is temperate. January, November and December tend to be the least comfortable months. July is the warmest month with average highs near 65°F, while January is the coldest with lows near 35°F.
The closest major airport is Dublin Airport (DUB), about 100 mi away. Nearby highlights include Lake District National Park, Stonehenge, Avebury and Associated Sites, Stonehenge and British Museum.
In plain terms. Today is slightly warmer than average for August. The forecast high of 68°F is 3.6°F above the 64°F typical for this month. The best window to be outside is roughly 2 PM to 5 PM, when temperature, rain chance and wind line up best. stargazing is the strongest bet in Snowdonia National Park today at 9.8/10. No weather-related travel disruption is expected today. Roads and airports should run normally.
Compiled from this page's own data: atlas facts plus live Open-Meteo readings.
Quick facts about Snowdonia National Park
| Type | National park |
|---|---|
| County | Gwynedd |
| Country | United Kingdom |
| Continent | Europe |
| Coordinates | 52°55′40.8″N 3°59′56″W (52.928, -3.9989) |
| Established | 1951 |
| Known for | Wales' highest peaks and slate valleys |
| Local time | 9:47 PM (UTC+01:00) |
| Best months | July and August |
| Climate | Temperate |
Weather map for Snowdonia National Park
Animated model layers. Pick a layer to load it.
Animated layers by Windy. For pin-level detail and nearby places, see the interactive map below.
Explore Snowdonia National Park
Every topic we hold for this place, and the same topic for the places around it.
Climate for related places
Frequently asked questions
Where is Snowdonia National Park?
Snowdonia National Park is a national park in Gwynedd. Its coordinates are 52.928, -3.9989. It lies in Europe.
What is the weather like in Snowdonia National Park right now?
It is currently 45°F (7°C) with clear. Humidity is 90% and wind is 4 mph.
When is the best time to visit Snowdonia National Park?
July and August offer the most comfortable conditions in Snowdonia National Park, which has a temperate climate. January, November and December are usually the hardest months for outdoor plans.
What time zone is Snowdonia National Park in?
Snowdonia National Park observes Europe/London (UTC+01:00). The local time is 9:47 PM.
What is the nearest airport to Snowdonia National Park?
The closest airports are Dublin Airport (DUB), 100 mi away, London Heathrow Airport (LHR), 181 mi away and London Gatwick Airport (LGW), 203 mi away.
What are the top things to do in Snowdonia National Park?
Popular options include Lake District National Park, Stonehenge, Avebury and Associated Sites, Stonehenge, British Museum, River Thames and Big Ben and the Houses of Parliament.
Related articles
Data sources and methodology
| Place data | USPOTUS Atlas dataset (national-parks) - coordinates, hierarchy and facts. |
|---|---|
| Forecast and observations | Open-Meteo (ECMWF and national models). |
| Air quality and pollen | Copernicus CAMS via Open-Meteo. US AQI scale. |
| Climate averages | ERA5 reanalysis via the Open-Meteo archive, aggregated over 3 years. |
| Method | Scores, comparisons and advice on this page are computed from the inputs above. Distances are straight-line. Nothing is estimated where data is missing - the block is simply not shown. |
Last updated August 23, 2026 at 9:47 PM local time. Live blocks refresh every 15 minutes; climate averages monthly.
