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Carmarthen Weather in May
During May, Carmarthen experiences moderate daytime temperatures of 16°C (61°F) and cooler nights around 9°C (48°F). Expect quite a bit of rainfall. Around 86 mm (3.4 in) is typical.
Rainfall in Carmarthen in May
Records from the past 30 years suggest around 15 days of rain, with 86 mm (3.4 in) average for the month. Expect a fairly normal spread of rainfall this month, with no particular pattern of very heavy or very persistent showers.
Temperature in Carmarthen in May
Daytime temperatures in Carmarthen reach 16°C (61°F) in May, dropping to 9°C (48°F) at night. Temperatures can feel cooler in the morning and evening, so layering is often the best approach. Nights fall to 9°C (48°F), which is cold enough to feel it indoors too. A good thick duvet makes all the difference for a comfortable night's sleep.If you prefer enjoying temperate temperatures and rain-free days, July typically offers the best circumstances. If you're seeking pleasant, dry and sunny weather somewhere else in the world, our weather planner can help you explore other options.
Carmarthen Temperature in May
Min Temperature
9°C (48°F)
Max Temperature
16°C (61°F)
Chance of Rain
50%
Precipitation
86 mm (3.4 in)
Rainy days
15 days
Carmarthen Weather by Month
Pick a month to see the average temperature, rainfall and sunshine in Carmarthen - and find the best time to visit.
Best Places in the United Kingdom in May
Find out more about the weather in the United Kingdom and which places have the best travel conditions in this month. See all of the United Kingdom in May →
perfect weather
pleasant
tolerable
unpleasant
poor
Perfect weather is subjective. On this map perfect weather has been defined with temperatures between 20°C (68°F) and 29°C (84°F) and not too much precipitation (less than 90 mm (3.5 in) a month).
What to Wear in Carmarthen in May
The weather can be unpredictable in May, so pack clothes you can easily mix and match. You could bring jeans, other long pants, and a few t-shirts. A light jacket or light sweater will be pleasant for the cooler moments. High rain levels are expected, so pack waterproof gear and an umbrella or poncho.
What To Do in Carmarthen in May
We rated the following activities from 1 (least suitable) to 10 (best) to do.
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Cycling6/10 -
Walking6/10 -
Barbeque5/10 -
Camping4/10 -
Outdoor sports9/10
Carmarthen 3-Day Forecast
More climate data for Carmarthen
See the full Carmarthen climate overview or explore weather in the United Kingdom.
Popular in May
Where to go in May - average daytime high across popular destinations.
London
18°C (64°F) Bath17°C (63°F) Manchester
17°C (63°F) York17°C (63°F) Torquay15°C (59°F) Glasgow15°C (59°F) Edinburgh15°C (59°F) Blackpool14°C (57°F) Bucket list
Need travel inspiration? Check out our bucket list articles and be inspired.
Hike the South West Coast Path
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