Best time to go

Snowdonia National Park in August 2027: weather, temperatures and activities

Do you want to visit Snowdonia National Park in August 2027? Discover the usual weather at this time of year, average temperatures, the risk of rain, possible activities, and our opinion on whether August is a good month to travel to Snowdonia National Park, Wales.

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Is it worth visiting Snowdonia National Park in August?

Check your ideal travel criteria and see if the month of August suits your plans to go to Snowdonia National Park.
What matters most?
Snowdonia National Park in August 2027: weather, temperatures and activities

Page summary

Snowdonia National Park in August in summary
Fair weather
Min 10°C Max 15°C 147 mm 8 day(s) 93% 61% 17°C 11.6 h/day
Best activities in August
Hiking and trekkingNature and landscapes
Practical guidelines
High crowding 04:57 19:43
Hourly weather

Average weather in Snowdonia National Park in August 2027

Fair weather

The weather in Snowdonia National Park in August 2027 is based on statistical data from previous years in August. This allows you to forecast the weather in August 2027. Check the hourly statistics (6:00, 9:00, 12:00, 15:00, 18:00, 21:00, 0:00 and 3:00), with the associated average temperature, for the whole month, and also, by navigating the tabs, for the beginning, middle and end of the month.

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Climate

Climate of Snowdonia National Park in August

Temperatures, precipitation and monthly trends help to better understand the climate in Snowdonia National Park in August.

Temperatures and rain in Snowdonia National Park in August

Average daily weather

Temperatures and rain day by day in August.
Minimal Average Maximums Average rainfall

Monthly temperatures

The month of August is highlighted to compare it quickly with the rest of the year.
Minimal Average Maximums

Monthly precipitation

The bar for the month under study is highlighted.
Average rainfall

About the climate in Snowdonia National Park in August

Seasonal normals

Seasonal normals of Snowdonia National Park in August

Check the seasonal normals in Snowdonia National Park in August and compare the weather with the previous month and the following month (or the months of your choice by selecting months in the form below): temperatures, wind, rain, humidity, climate rating...

Last updated: 12/01/2026
Reference period for normals: January 2009 - December 2025
Month analyzed
August
Weather data July August September
Outside temperature
Average temperature 13.3°C 12.5°C 11.1°C
Maximum temperature 15.4°C 14.6°C 13.2°C
Minimum temperature 11.1°C 10.4°C 9.0°C
Record maximum temperature 29.0°C
(2013)
24.0°C
(2013)
25.0°C
(2011)
Record low temperature 7.0°C
(2012)
4.0°C
(2011)
3.0°C
(2010)
Number of days at +30° 0 day(s)
(0%)
0 day(s)
(0%)
0 day(s)
(0%)
Number of days at +18° 7 day(s)
(23%)
4 day(s)
(13%)
3 day(s)
(10%)
Number of days below 0° 0 day(s)
(0%)
0 day(s)
(0%)
0 day(s)
(0%)
Sea temperature
Sea temperature (average) 14.6°C 15.5°C 15.4°C
Sea temperature (minimum) 13.2°C 14.9°C 14.8°C
Sea temperature (maximum) 16.3°C 16.5°C 16.3°C
Wind
Wind speed 17 km/h 19 km/h 19 km/h
Wind temperature 9.8°C 8.8°C 7.0°C
Precipitation (rain)
Precipitation 148.5 mm 146.8 mm 127.7 mm
Number of days with precipitation 22 day(s)
(71%)
24 day(s)
(77%)
19 day(s)
(63%)
Number of days with significant precipitation (greater than 5 mm) 9 day(s)
(28%)
8 day(s)
(27%)
7 day(s)
(24%)
Record precipitation in one day 61.9 mm
(2009)
57.0 mm
(2015)
55.3 mm
(2012)
Other weather data
Humidity 92% 93% 93%
Visibility 8.6 km 8.5 km 8.7 km
Cloud cover 58% 61% 60%
UV index 4 3 3
Daily sunshine 12h 12h 10h
Sunrise and sunset
Sunrise time 04h09 04h57 05h51
Sunset time 20h35 19h43 18h31
Day length 16h26 14h46 12h40
Our opinion on the climate in August
The review of Where And When fair weather fair weather fair weather
Activities and events

What to do in Snowdonia National Park in August?

Best activities in August
Hiking and trekkingNature and landscapes
Activities not recommended in August
Winter sports and snow
Observed weather

What was the weather like in Snowdonia National Park in August last?

Find the observed weather calendar in Snowdonia National Park in August 2025, with each day’s weather, temperatures and precipitation.

Mon. Tue. Wed. Thu. Fri. Sat. Sun.
1
Patchy rain nearby
10°C13°C0.0 mm
2
Partly Cloudy
9°C13°C0.0 mm
3
Patchy rain nearby
13°C15°C0.5 mm
4
Clear/Sunny
13°C14°C4.9 mm
5
Patchy rain nearby
9°C13°C0.2 mm
6
Clear/Sunny
8°C13°C0.0 mm
7
Patchy rain nearby
11°C14°C0.6 mm
8
Clear/Sunny
8°C13°C0.0 mm
9
Patchy rain nearby
10°C13°C0.2 mm
10
Clear/Sunny
8°C14°C0.0 mm
11
Partly Cloudy
14°C19°C0.0 mm
12
Partly Cloudy
17°C22°C0.0 mm
13
Clear/Sunny
18°C21°C0.0 mm
14
Light drizzle
13°C18°C0.4 mm
15
Patchy rain nearby
16°C18°C0.0 mm
16
Clear/Sunny
16°C21°C0.0 mm
17
Clear/Sunny
14°C20°C0.0 mm
18
Clear/Sunny
14°C19°C0.0 mm
19
Partly Cloudy
11°C18°C0.0 mm
20
Partly Cloudy
9°C14°C0.0 mm
21
Clear/Sunny
8°C14°C0.0 mm
22
Clear/Sunny
11°C15°C0.0 mm
23
Patchy rain nearby
12°C16°C0.2 mm
24
Partly Cloudy
13°C17°C0.0 mm
25
Clear/Sunny
16°C18°C0.0 mm
26
Patchy rain nearby
13°C17°C2.2 mm
27
Patchy rain nearby
10°C16°C5.6 mm
28
Light rain shower
10°C12°C3.0 mm
29
Patchy rain nearby
11°C16°C0.8 mm
30
Light rain shower
12°C14°C2.3 mm
31
Patchy rain nearby
10°C12°C3.4 mm
Nearby

Where to go near Snowdonia National Park in August?

Compare cities and destinations near Snowdonia National Park in August to find another travel stop, a nearby alternative or a logical continuation of your stay in Snowdonia National Park.

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Every month

Best time to visit Snowdonia National Park month by month

Compare the weather in Snowdonia National Park across all months of the year and open each detailed page to find the best time.

Frequently asked questions

Travel to to Snowdonia National Park in August: your frequently asked questions

Short answers to the questions we ask ourselves before booking for this month.

It's an average period, nothing special. Conditions are mediocre in Snowdonia National Park in August, which ranks this month 3th out of 12. The choice of region will make a real difference.

Expect an average of 15°C during the day and 10°C at night, with about 147 mm of precipitation spread over 8 rainy days.

The sea is only 16°C on average in August. Swimming is still possible, but it will be cool.

Expect about 11.6 hours of sunshine per day on average for this month.

This month is particularly suited to these activities: Hiking and trekking and Nature and landscapes. These are the ones for which the conditions on site are most favourable.

Yes: this month is in High crowding, with a visitor index of 81/100. Book your accommodation and transportation well in advance.
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