Frosty mornings in St Mary's Bay are scarcer than in 89% of UK towns
Midsummer highs settle at about 22.0°C (72°F). It is a dry place: less rain falls here than on 66% of UK towns. November is the wettest month, April the driest. The outdoor season runs from May to September, with highs of 17–22°C.
Met Office 1991–2020 averages for the town itself.
A year in St Mary's Bay at a glance
Each month’s typical high and low, in °C.
What a year in St Mary's Bay feels like
Typical highs and lows by season and by month, from the Met Office’s 1991–2020 averages.
About 698 mm of rain a year
November is the wettest month and April the driest. About 18 days a year bring 10 mm (0.4 in) or more. 39th wettest of 87 Kent towns of 2,500+.
Rain by month
Millimetres
Sunshine by month
Hours of bright sunshine at Manston
26 air frosts and 10 days of 25°C a year
On about 26 nights a year the air drops below freezing, and on about under 1 days it stays below freezing all day. About 10 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 Manston
Manston is 28 miles north-east of St Mary's Bay, 49 m (161 ft) above sea level. It is the nearest of the 37 long-running stations the Met Office publishes in full; at that distance read it for sunshine and the station’s own record, not as the town’s figures.
| Month | High | Low | Rain | Air frosts | Sun (hours) |
|---|---|---|---|---|---|
| January | 7.6°C | 2.5°C | 51 mm | 5.9 | 64 |
| February | 8.0°C | 2.4°C | 41 mm | 5.8 | 82 |
| March | 10.3°C | 3.9°C | 37 mm | 2.7 | 130 |
| April | 13.2°C | 5.8°C | 38 mm | 0.6 | 191 |
| May | 16.3°C | 8.7°C | 50 mm | 0.0 | 224 |
| June | 19.5°C | 11.4°C | 43 mm | 0.0 | 230 |
| July | 22.1°C | 13.7°C | 47 mm | 0.0 | 236 |
| August | 22.2°C | 14.0°C | 51 mm | 0.0 | 214 |
| September | 19.1°C | 11.9°C | 49 mm | 0.0 | 168 |
| October | 15.1°C | 9.1°C | 74 mm | 0.2 | 119 |
| November | 11.0°C | 5.6°C | 72 mm | 1.3 | 76 |
| December | 8.3°C | 3.2°C | 63 mm | 5.1 | 59 |
| Year | 14.4°C | 7.7°C | 615 mm | 22 | 1,793 |
Met Office historic station data, Manston, 1991–2020 months averaged (a month needs 20 of the 30 years; estimated values counted, missing months left out). Sunshine: Kipp & Zonen recorder.
How St Mary's Bay 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 Kent 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 |
|---|---|---|---|
| St Mary's Bay | 22.0°C | 2.6°C | 698 mm |
| Dymchurch 1.9 mi | 22.0°C about the same | 2.7°C about the same | 702 mm |
| New Romney 2.1 mi | 22.1°C about the same | 2.5°C about the same | 695 mm |
| Littlestone-on-Sea 2.9 mi | 21.8°C about the same | 2.7°C about the same | 707 mm |
| Lydd 5.0 mi | 21.9°C about the same | 2.5°C about the same | 709 mm |
| Lympne 5.1 mi | 21.5°C 0.5°C cooler | 2.2°C about the same | 848 mm |
| Aldington 5.8 mi | 22.5°C 0.5°C warmer | 2.0°C 0.6°C colder | 689 mm |
St Mary's Bay 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 | 8.2°C 47°F | 2.6°C 37°F | 5.3°C | 68 mm 2.7 in |
| February | 8.5°C 47°F | 2.4°C 36°F | 5.4°C | 53 mm 2.1 in |
| March | 10.8°C 51°F | 3.9°C 39°F | 7.3°C | 40 mm 1.6 in |
| April | 13.8°C 57°F | 5.4°C 42°F | 9.6°C | 39 mm 1.5 in |
| May | 17.0°C 63°F | 8.5°C 47°F | 12.7°C | 42 mm 1.7 in |
| June | 19.8°C 68°F | 11.1°C 52°F | 15.4°C | 47 mm 1.9 in |
| July | 22.0°C 72°F | 13.4°C 56°F | 17.7°C | 51 mm 2.0 in |
| August | 22.3°C 72°F | 13.4°C 56°F | 17.8°C | 63 mm 2.5 in |
| September | 19.6°C 67°F | 11.3°C 52°F | 15.5°C | 54 mm 2.1 in |
| October | 15.7°C 60°F | 8.7°C 48°F | 12.2°C | 79 mm 3.1 in |
| November | 11.6°C 53°F | 5.4°C 42°F | 8.5°C | 85 mm 3.3 in |
| December | 8.7°C 48°F | 2.9°C 37°F | 5.8°C | 77 mm 3.0 in |
| Year | 14.8°C | 7.4°C | 11.1°C | 698 mm |
Where St Mary's Bay’s numbers come from
Averages over 30 years, not a forecast.
- Mean temperature, rain and day counts: HadUK-Grid 1991–2020 averages for the 1 Met Office 2 km grid square whose centre lies inside St Mary's Bay’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 Manston, 28 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 St Mary's Bay’s climate
How warm does St Mary's Bay get in summer?
August is the warmest month, with average highs of 22.3°C (72°F). About 10 days a year reach 25°C (77°F), fewer than 55% of UK towns.
How cold does St Mary's Bay get in winter?
February nights average 2.4°C (36°F). The air drops below freezing on about 26 nights a year, and about under 1 days a year stay below freezing all day.
How much rain does St Mary's Bay get?
About 698 mm (27 in) a year, less than 66% of UK towns. November is the wettest month (85 mm) and April the driest (39 mm).
How sunny is it?
The nearest Met Office station with a sunshine record, Manston (28 miles away), averages 1,793 hours of bright sunshine a year. Sunshine isn’t on the town grid, so this is the station’s figure.
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 St Mary's Bay. 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 St Mary's Bay →
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