Wales weather by month & the best time to visit
United States · seaside town · subpolar / tundra climate
Wales is short on reliable sunshine. Its best month is August (Score 12/100) — for stronger sun, try one of the nearby alternatives.
When is the best time to visit Wales?
Wales never gets truly sunny weather: August is as good as it gets at 12/100, and January is the low point (0/100). If sunshine is the point of the trip, the nearby alternatives do better.
How sunny is Wales?
Wales isn't a sunny place by world standards: about 1,799 hours of sunshine a year. Conditions barely change through the year — only 12 Sunshine Score points separate August from January. It ranks #479 of 580 destinations in United States for annual sunshine, below the national median of 2,279 hours. The year's 616 mm of rain spreads fairly evenly across the months, with no pronounced dry season.
Sunshine Score by month
| Month | Score | Day high | Night low | Rain | UV | Sea |
|---|---|---|---|---|---|---|
| January | 0 | -12° / 10°F | -16° / 3°F | 38 mm | 0 | -2° / 28°F |
| February | 0 | -11° / 12°F | -16° / 3°F | 42 mm | 0 | -2° / 28°F |
| March | 0 | -11° / 12°F | -15° / 5°F | 31 mm | 1 | -2° / 28°F |
| April | 0 | -5° / 23°F | -10° / 14°F | 37 mm | 2 | -2° / 28°F |
| May | 0 | 0° / 32°F | -2° / 28°F | 40 mm | 3 | -1° / 30°F |
| June | 0 | 6° / 43°F | 3° / 37°F | 44 mm | 3 | 3° / 37°F |
| July | 6 | 9° / 48°F | 7° / 45°F | 77 mm | 3 | 9° / 48°F |
| August | 12 | 10° / 50°F | 7° / 45°F | 81 mm | 2 | 10° / 50°F |
| September | 0 | 7° / 45°F | 5° / 41°F | 61 mm | 1 | 8° / 46°F |
| October | 0 | 2° / 36°F | 1° / 34°F | 61 mm | 0 | 4° / 39°F |
| November | 0 | -3° / 27°F | -5° / 23°F | 54 mm | 0 | 1° / 34°F |
| December | 0 | -9° / 16°F | -12° / 10°F | 50 mm | 0 | -1° / 30°F |
Sea temperature in Wales by month
The sea off Wales is warmest in August at around 10°C / 50°F, and coolest in January at -2°C / 28°F. It never reaches comfortable swimming temperatures (21°C+). Month-by-month sea-surface temperatures are in the Sea column of the table above.
Nearest destinations
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Wales: questions and answers
What kind of destination is Wales?
Wales is a seaside town in United States with a subpolar / tundra climate — the sea reaches 10°C at its warmest.
How many hours of sunshine does Wales get a year?
Wales gets about 1,799 hours of sunshine a year, at its best around August.
When is the best time to visit Wales?
Wales is short on reliable sunshine — its best month is only August at 12/100. For a sunnier trip, see the nearest strong-sun alternatives listed on the page.
What is the least sunny month in Wales?
January is the least sunny month in Wales, scoring 0/100 with about 38 mm of rain.
What is the sea temperature in Wales?
The sea in Wales ranges from about -2°C (January) to 10°C (August). Month-by-month sea temperatures are on this page.
How strong is the sun in Wales?
The typical midday UV index in Wales peaks around 3 (moderate) in May, easing to about 0 (low) in January. Month-by-month midday UV values are in the UV column of the table on this page.
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