Newport climate
Newport (Wales, United Kingdom) has a temperate oceanic climate (Köppen Cfb). The average temperature over the year is 11 °C52 °F, and about 967 mm38 in of precipitation falls in an average year.
Temperature by month
Precipitation by month
Newport climate table
| Month | High °C°F | Low °C°F | Mean °C°F | Precip. mmin | Frost days |
|---|---|---|---|---|---|
| Jan | 846 | 438 | 642 | 943.7 | 6 |
| Feb | 846 | 338 | 542 | 732.9 | 6 |
| Mar | 1049 | 439 | 744 | 702.8 | 4 |
| Apr | 1355 | 642 | 949 | 562.2 | 1 |
| May | 1661 | 947 | 1254 | 672.6 | 0 |
| Jun | 1966 | 1253 | 1559 | 722.8 | 0 |
| Jul | 2169 | 1356 | 1763 | 803.1 | 0 |
| Aug | 2068 | 1356 | 1762 | 843.3 | 0 |
| Sep | 1865 | 1153 | 1559 | 632.5 | 0 |
| Oct | 1559 | 949 | 1254 | 1003.9 | 0 |
| Nov | 1152 | 643 | 948 | 1034.0 | 1 |
| Dec | 847 | 440 | 643 | 1044.1 | 4 |
| Year | 2169 | 338 | 1152 | 96738 | 22 |
“Year” row: highest monthly high, lowest monthly low, annual mean and annual total. Frost days are for the whole grid cell.
| Month | Humid. | Cloud | Solar | Daylight |
|---|---|---|---|---|
| Jan | 93% | 80% | 0.8 | 8:18 |
| Feb | 91% | 79% | 1.5 | 9:53 |
| Mar | 89% | 75% | 2.7 | 11:42 |
| Apr | 85% | 69% | 4.1 | 13:48 |
| May | 83% | 70% | 5.0 | 15:36 |
| Jun | 82% | 71% | 5.3 | 16:37 |
| Jul | 82% | 70% | 5.0 | 16:12 |
| Aug | 84% | 73% | 4.2 | 14:36 |
| Sep | 85% | 70% | 3.2 | 12:33 |
| Oct | 89% | 76% | 1.8 | 10:33 |
| Nov | 92% | 81% | 1.0 | 8:45 |
| Dec | 93% | 82% | 0.6 | 7:50 |
Humid. = average relative humidity at 2 m; cloud = average cloud amount; solar = average daily solar energy reaching the ground in kWh/m² (all-sky); daylight in hours:minutes, calculated for the 15th of each month.
What the climate of Newport is like
The warmest month is July, with an average high of 21 °C69 °F and a low of 13 °C56 °F. The coldest is February, when highs average 8 °C46 °F and lows 3 °C38 °F. There is a clear seasonal cycle, with 11.5 °C20.8 °F between the average temperature of the warmest and the coolest month.
Annual precipitation is moderate at about 967 mm38 in. Rain is spread fairly evenly through the year. The wettest month is December (104 mm4.1 in), the driest is April (56 mm2.2 in).
Relative humidity ranges from 82% in July to 93% in December. The clearest skies (lowest average cloud amount, 69%) are typical of April. Average wind speed near the ground ranges from 12 km/h (7 mph) in June to 16 km/h (10 mph) in January. Daylight lasts from about 7.8 hours in December to 16.6 hours in June.
Best time to visit Newport
Based on these averages, the most comfortable months for sightseeing and outdoor activities are June–September: average highs of 18 °C65 °F to 21 °C69 °F with 63 mm2.5 in to 84 mm3.3 in of precipitation per month.
The most challenging month is January, which is cold, with average highs of 8 °C46 °F.
Comfort score: months are ranked by how close they come to an average high of 21–28 °C (70–82 °F), lows above 5 °C (41 °F), little precipitation and moderate humidity. The best-ranked months of each place are recommended, even where none meets all of these. These are general rules of thumb applied to long-term averages.
What to pack for Newport
- Winter (December–February) — highs around 8 °C46 °F, lows 338 to 4 °C40 °F, about 91 mm3.6 in of precipitation a month. Pack a warm coat, layers and closed shoes and an umbrella or light rain jacket.
- Spring (March–May) — highs 1049 to 16 °C61 °F, lows 439 to 9 °C47 °F, about 64 mm2.5 in of precipitation a month. Pack long sleeves, a sweater and a medium jacket.
- Summer (June–August) — highs 1966 to 21 °C69 °F, lows 1253 to 13 °C56 °F, about 79 mm3.1 in of precipitation a month. Pack light layers — T-shirts plus a light sweater or jacket.
- Autumn (September–November) — highs 1152 to 18 °C65 °F, lows 643 to 11 °C53 °F, about 89 mm3.5 in of precipitation a month. Pack long sleeves, a sweater and a medium jacket.
How Newport compares
Compared with Cardiff, about 17 km to the southwest, Newport has practically the same average temperature and receives a similar amount of precipitation.
Of the 66 places in the United Kingdom covered by World Climates, Newport is the 13th warmest by annual mean temperature and the 18th wettest by annual precipitation. See all of them on the United Kingdom climate page.
Places in other countries with the most similar temperature and rainfall pattern: Limerick (Ireland, Cfb), Haarlem (The Netherlands, Cfb) and Dublin (Ireland, Cfb).
Nearby places
- Cardiff 17 km · 11 °C52 °F · 967 mm38 in
- Bristol 31 km · 11 °C51 °F · 811 mm32 in
- Gloucester 61 km · 10 °C51 °F · 772 mm30 in
- Swansea 65 km · 11 °C52 °F · 1,105 mm43 in
- Cheltenham 72 km · 10 °C50 °F · 791 mm31 in
- Swindon 84 km · 10 °C50 °F · 806 mm32 in
- Worcester 86 km · 10 °C50 °F · 772 mm30 in
- Exeter 103 km · 11 °C52 °F · 1,087 mm43 in
Frequently asked questions
What is the warmest month in Newport?
July is the warmest month in Newport, with an average high of 21 °C (69 °F) and an average low of 13 °C (56 °F).
What is the coldest month in Newport?
February is the coldest month, with an average high of 8 °C (46 °F) and an average low of 3 °C (38 °F).
When does it rain the most in Newport?
December is the wettest month with about 104 mm (4.1 in) of precipitation; April is the driest with about 56 mm (2.2 in).
What is the best time to visit Newport?
Judging by long-term averages, the most comfortable months are June–September.
About this data
All figures are 25-year averages (January 2001 – December 2025) from the NASA POWER project. Temperature, humidity, wind and precipitation come from the MERRA-2 reanalysis (precipitation is the bias-corrected MERRA-2 product), cloud and solar values from CERES satellite data. They describe a grid cell of roughly 50–70 km, not a single weather station, so they can differ from airport records — most of all on coasts, in mountains and for rainfall. Average highs and lows are the monthly mean temperature plus/minus half of the average daily temperature range. Counts of rainy days are not part of this dataset.
The grid cell’s average elevation is 96 m, while Newport lies at about 16 m. Temperatures on this page were therefore adjusted by +0.5 °C0.9 °F using the standard lapse rate of 6.5 °C per 1,000 m.