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Rhyl, Wales climate
Cfb Oceanic / temperate
Rhyl has a mildly seasonal cool-temperate climate (Oceanic / temperate, Köppen Cfb). The hottest month is July with an average daily high near 67°F, while the coldest is January averaging around 37°F at night. Precipitation is fairly even year-round, totalling about 30 inches. At latitude 53°N, day length swings from 7.3 hours in midwinter to 16.7 hours at midsummer.
Temperature & precipitation
Daily high–low temperature range with the monthly average, plus monthly precipitation · 1991–2020 normals · hover a month for the exact figuresHours of sunshine per day
Estimated sunny hours each month — daylight length × clear-sky fraction · 1991–2020 monthly cloud cover (NASA POWER)Rhyl climate normals (1991–2020)
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high (°F) | 46 | 47 | 50 | 54 | 60 | 64 | 67 | 67 | 63 | 57 | 51 | 47 |
| Avg temp (°F) | 42 | 42 | 44 | 48 | 53 | 57 | 61 | 60 | 57 | 52 | 46 | 43 |
| Avg low (°F) | 37 | 37 | 39 | 41 | 46 | 51 | 54 | 54 | 50 | 46 | 41 | 38 |
| Precipitation (in) | 2.8 | 2.2 | 1.8 | 1.8 | 1.9 | 2.1 | 2.2 | 2.5 | 2.5 | 3.3 | 3.3 | 3.5 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Avg high (°F) | 46 | 47 | 50 | 54 | 60 | 64 |
| Avg temp (°F) | 42 | 42 | 44 | 48 | 53 | 57 |
| Avg low (°F) | 37 | 37 | 39 | 41 | 46 | 51 |
| Precipitation (in) | 2.8 | 2.2 | 1.8 | 1.8 | 1.9 | 2.1 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Avg high (°F) | 67 | 67 | 63 | 57 | 51 | 47 |
| Avg temp (°F) | 61 | 60 | 57 | 52 | 46 | 43 |
| Avg low (°F) | 54 | 54 | 50 | 46 | 41 | 38 |
| Precipitation (in) | 2.2 | 2.5 | 2.5 | 3.3 | 3.3 | 3.5 |
Sky & atmosphere
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Cloud cover (%) | 79 | 79 | 78 | 76 | 73 | 76 | 75 | 76 | 75 | 78 | 80 | 79 |
| Relative humidity (%) | 88 | 87 | 87 | 85 | 84 | 85 | 85 | 85 | 84 | 85 | 86 | 87 |
| Wind speed (mph) | 14.3 | 13.7 | 12.1 | 10.4 | 10.0 | 9.4 | 9.4 | 10.1 | 11.2 | 12.9 | 13.7 | 14.2 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Cloud cover (%) | 79 | 79 | 78 | 76 | 73 | 76 |
| Relative humidity (%) | 88 | 87 | 87 | 85 | 84 | 85 |
| Wind speed (mph) | 14.3 | 13.7 | 12.1 | 10.4 | 10.0 | 9.4 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Cloud cover (%) | 75 | 76 | 75 | 78 | 80 | 79 |
| Relative humidity (%) | 85 | 85 | 84 | 85 | 86 | 87 |
| Wind speed (mph) | 9.4 | 10.1 | 11.2 | 12.9 | 13.7 | 14.2 |
Methodology & sources
Temperature & precipitation — 1991–2020 normals computed from 30 years of daily observations at Rhyl No2, a weather station, about 8 km from the city centre. The underlying daily records come from NOAA's global station network.
Cloud, humidity, wind & sunshine — modelled estimates from NASA POWER, NASA's satellite-and-reanalysis climatology. This is the standard global source for atmospheric variables, which are not measured at most weather stations.