Johnston Weather & Climate: Best Time to Visit
Average temperatures, rainfall, sunshine and the best time to visit Johnston.
Climate overview of Johnston
Johnston, Dyfed, United Kingdom, has a moderate seasonal temperature range, with August reaching 19°C (66°F) and February cooling to 10°C (50°F).
The city receives considerable rainfall, with around 1098 mm (43 in) annually. November is the wettest month.
Johnston Weather by Month
Pick a month to see the average temperature, rainfall and sunshine in Johnston — and find the best time to visit.
Monthly Temperature in Johnston
The weather in Johnston changes moderately throughout the year, offering enough variation to appreciate each season. Typically, average maximum daytime temperatures range from a pleasant 19°C (66°F) in August to a chilly 10°C (50°F) in the coolest month, February.
Nights vary from 14°C (57°F) in August to around 5°C (41°F) during the colder months.
Check out our detailed temperature page for more information.
Temperature ranges by month
Rainfall in Johnston
Johnston is known for its substantial rainfall, with annual precipitation reaching 1098 mm (43 in). Johnston offers a pleasant mix of wetter and slightly drier months. The difference in precipitation between the wettest month November (128 mm (5 in)) and the driest month May (67 mm (2.6 in)) is not too significant. For more details, please visit our Johnston Precipitation page.
The mean monthly precipitation over the year, including rain, hail, and snow
The average number of days each month with precipitation
Best Time to Visit Johnston
The weather does bring rainfall during this period, between 73 mm (2.9 in) and 89 mm (3.5 in). Planning your next adventure but unsure where to go? Our climate tool suggests perfect locations tailored to your preferred weather conditions. Discover your ideal travel destination with our weather planner.
Frequently asked questions about the climate in Johnston
What is the best time to visit Johnston?
July, August and September typically offer the most optimal weather in Johnston. In contrast, January, February, November and December tend to have less optimal conditions.
What temperatures can I expect in Johnston?
Daytime highs range from 10°C (50°F) in February to 19°C (66°F) in August. Nighttime lows range from 5°C (41°F) to 14°C (57°F).
How much rain does Johnston get?
Annual rainfall is around 1098 mm (43 in). November is the wettest month with 128 mm (5 in), while May is the driest with 67 mm (2.6 in).
Johnston 3-Day Forecast
Johnston 3-Day Forecast
Johnston on the map
Johnston is highlighted — select any city to see its climate.
Popular this month
Where to go in July — average daytime high across popular destinations.
London
23°C (73°F) Bath22°C (72°F) York22°C (72°F) Manchester
21°C (70°F) Edinburgh
19°C (66°F) Glasgow19°C (66°F) Torquay20°C (68°F) Blackpool19°C (66°F) 
Bucket list
Need travel inspiration? Check out our bucket list articles and be inspired.
Hike the South West Coast Path
The South West Coast Path means breathtaking nature, kind people and delicious food everywhere you go. It is an unforgettable experience and you need to add it to your bucket list.
Welcome to Totnes, the hidden treasure of South Devon
Totnes is a place where historical richness fuses effortlessly with a vibrant alternative culture and breathtaking natural surroundings. The town pulses with an amazing community spirit that you'll feel around every corner.
London's coolest neighborhoods you'll want to visit
Discover the 6 coolest neighborhoods in London for your trip! Explore vibrant Shoreditch, lively Soho, alternative Camden, and many more.
10 cities you should definitely visit in the UK
Discover the top 10 most fun and alternative cities in the UK, rich in art, culture, and adventure. Explore vibrant neighborhoods and unique places.