Blyth gets fewer frosts than 93% of UK towns
Midsummer highs settle at about 19.6°C (67°F). A year here swings 17°C from midwinter lows to midsummer highs. Its July afternoons stay fresher than in 81% of UK towns. Comfortable outdoor weather lasts from June to September, with highs of 17–20°C.
Met Office 1991–2020 averages for the town itself.
A year in Blyth at a glance
Each month’s typical high and low, in °C.
What a year in Blyth feels like
Typical highs and lows by season and by month, from the Met Office’s 1991–2020 averages.
About 656 mm of rain a year
November is the wettest month and March the driest. About 14 days a year bring 10 mm (0.4 in) or more. 16th wettest of 20 Northumberland towns of 2,500+.
Rain by month
Millimetres
22 air frosts and under 1 days of 25°C a year
On about 22 nights a year the air drops below freezing; days that stay below freezing are rare. About under 1 days a year reach 25°C (77°F).
Day counts are 1991–2020 averages from the Met Office’s 2 km grid. The Met Office calls a day of 25°C or more a summer day and a night below 0°C an air frost; ground frosts, on grass, come more often.
The Met Office station at Durham
Durham is 24 miles south of Blyth, 102 m (335 ft) above sea level. It is the nearest of the 37 long-running stations the Met Office publishes in full.
| Month | High | Low | Rain | Air frosts |
|---|---|---|---|---|
| January | 6.9°C | 1.3°C | 53 mm | 10.3 |
| February | 7.8°C | 1.4°C | 46 mm | 9.8 |
| March | 9.9°C | 2.5°C | 41 mm | 6.5 |
| April | 12.5°C | 4.1°C | 51 mm | 3.2 |
| May | 15.4°C | 6.5°C | 45 mm | 0.8 |
| June | 18.0°C | 9.3°C | 61 mm | 0.0 |
| July | 20.2°C | 11.3°C | 61 mm | 0.0 |
| August | 19.9°C | 11.3°C | 67 mm | 0.0 |
| September | 17.4°C | 9.2°C | 57 mm | 0.0 |
| October | 13.5°C | 6.5°C | 63 mm | 1.2 |
| November | 9.7°C | 3.6°C | 76 mm | 4.6 |
| December | 7.1°C | 1.4°C | 61 mm | 10.4 |
| Year | 13.2°C | 5.7°C | 681 mm | 47 |
Met Office historic station data, Durham, 1991–2020 months averaged (a month needs 20 of the 30 years; estimated values counted, missing months left out). Sunshine: Campbell-Stokes recorder.
How Blyth compares
Against the 2,537 towns and cities of 2,500 or more across the UK, each with its own Met Office averages, and its place among Northumberland towns that size.
Nearby towns’ climate
The nearest towns of 1,000+ within 12 miles: a hill, a valley or the sea can make a real difference over a few miles.
| Town | July high | January low | Rain a year |
|---|---|---|---|
| Blyth | 19.6°C | 2.3°C | 656 mm |
| New Hartley 2.4 mi | 19.2°C about the same | 2.0°C about the same | 655 mm |
| Bedlington 2.6 mi | 19.5°C about the same | 2.1°C about the same | 674 mm |
| Cramlington 3.2 mi | 19.5°C about the same | 1.7°C 0.7°C colder | 679 mm |
| Seaton Sluice 3.3 mi | 19.2°C about the same | 2.1°C about the same | 655 mm |
| Seaton Delaval 3.3 mi | 19.2°C about the same | 1.9°C about the same | 655 mm |
| Stakeford 3.9 mi | 19.4°C about the same | 2.3°C about the same | 666 mm |
Blyth weather by month
Average daily high and low, mean temperature and rain, 1991–2020, for the town itself (the Met Office’s HadUK-Grid).
| Month | High | Low | Mean | Rain |
|---|---|---|---|---|
| January | 7.5°C 46°F | 2.3°C 36°F | 4.9°C | 48 mm 1.9 in |
| February | 8.1°C 47°F | 2.5°C 36°F | 5.3°C | 42 mm 1.7 in |
| March | 9.9°C 50°F | 3.3°C 38°F | 6.6°C | 40 mm 1.6 in |
| April | 11.9°C 53°F | 4.7°C 40°F | 8.3°C | 48 mm 1.9 in |
| May | 14.6°C 58°F | 7.1°C 45°F | 10.9°C | 40 mm 1.6 in |
| June | 17.2°C 63°F | 9.8°C 50°F | 13.5°C | 61 mm 2.4 in |
| July | 19.6°C 67°F | 11.7°C 53°F | 15.6°C | 62 mm 2.5 in |
| August | 19.5°C 67°F | 11.9°C 53°F | 15.7°C | 67 mm 2.6 in |
| September | 17.3°C 63°F | 10.2°C 50°F | 13.8°C | 54 mm 2.1 in |
| October | 13.8°C 57°F | 7.6°C 46°F | 10.7°C | 63 mm 2.5 in |
| November | 10.3°C 50°F | 4.8°C 41°F | 7.5°C | 75 mm 2.9 in |
| December | 7.9°C 46°F | 2.5°C 37°F | 5.2°C | 57 mm 2.3 in |
| Year | 13.1°C | 6.5°C | 9.8°C | 656 mm |
Where Blyth’s numbers come from
Averages over 30 years, not a forecast.
- Mean temperature, rain and day counts: HadUK-Grid 1991–2020 averages for the 3 Met Office 2 km grid squares whose centre lies inside Blyth’s built-up area.
- Highs and lows: the Met Office publishes average daily maxima and minima on its 12 km grid; each is moved by the difference between the town’s 2 km mean temperature and the 12 km square’s, which carries the town’s own height and setting over.
- Weather station and sunshine: Met Office historic station data for Durham, 24 miles away, months of 1991–2020 averaged.
- Comparisons: every town and city of 2,500 or more across the UK, all four nations, read the same way.
Met Office HadUK-Grid · Met Office Climate Data Portal · Historic station data. Open Government Licence v3.0.
Questions about Blyth’s climate
How warm does Blyth get in summer?
July is the warmest month, with average highs of 19.6°C (67°F). About under 1 days a year reach 25°C (77°F), fewer than 98% of UK towns.
How cold does Blyth get in winter?
January nights average 2.3°C (36°F). The air drops below freezing on about 22 nights a year, and about under 1 days a year stay below freezing all day.
How much rain does Blyth get?
About 656 mm (26 in) a year, less than 78% of UK towns. November is the wettest month (75 mm) and March the driest (40 mm).
Where do these figures come from?
The Met Office’s HadUK-Grid 1991–2020 averages, which turn thousands of weather stations into a map of the UK in 2 km squares; the page reads the squares inside Blyth. They are 30-year averages, not a forecast.
Contains Met Office data © Crown copyright 2026, Open Government Licence v3.0. HadUK-Grid 1991–2020 averages via the Met Office Climate Data Portal; station averages from Met Office historic station data. Today’s forecast for Blyth →
Contains public sector information licensed under the Open Government Licence v3.0. Contains HM Land Registry data © Crown copyright and database right 2026. Contains OS data © Crown copyright and database right 2026 (ONS boundaries). Northern Ireland: Source: NISRA; contains Land & Property Services data and Ordnance Survey of Northern Ireland information, © Crown copyright, licensed under the Open Government Licence v3.0. Scotland: contains National Records of Scotland data, Registers of Scotland data and SEPA data, © Crown copyright / © SEPA 2025, licensed under the Open Government Licence v3.0.