Walton-on-Thames sits near the top of UK towns for July heat
Winter’s chill peaks in January, at about 2.5°C (36°F) after dark. Seasons differ by 21°C, from the coldest nights to the warmest afternoons. Winters are mild: January nights here are milder than in 84% of UK towns. Gritters and ice scrapers earn their keep on roughly 32 nights a year below 0°C.
Met Office 1991–2020 averages for the town itself.
A year in Walton-on-Thames at a glance
Each month’s typical high and low, in °C.
What a year in Walton-on-Thames feels like
Typical highs and lows by season and by month, from the Met Office’s 1991–2020 averages.
About 644 mm of rain a year
November is the wettest month and March the driest. About 15 days a year bring 10 mm (0.4 in) or more. 59th wettest of 66 Surrey towns of 2,500+.
Rain by month
Millimetres
Sunshine by month
Hours of bright sunshine at Heathrow
32 air frosts and 23 days of 25°C a year
On about 32 nights a year the air drops below freezing, and on about under 1 days it stays below freezing all day. About 23 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 Heathrow
Heathrow is 6.8 miles north of Walton-on-Thames, 25 m (82 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 | Sun (hours) |
|---|---|---|---|---|---|
| January | 8.4°C | 2.7°C | 59 mm | 6.8 | 59 |
| February | 9.0°C | 2.6°C | 45 mm | 6.2 | 76 |
| March | 11.7°C | 4.1°C | 39 mm | 3.0 | 120 |
| April | 15.0°C | 6.0°C | 42 mm | 0.8 | 169 |
| May | 18.4°C | 9.1°C | 46 mm | 0.0 | 197 |
| June | 21.6°C | 12.0°C | 47 mm | 0.0 | 197 |
| July | 23.9°C | 14.2°C | 46 mm | 0.0 | 206 |
| August | 23.4°C | 14.1°C | 54 mm | 0.0 | 192 |
| September | 20.2°C | 11.6°C | 50 mm | 0.0 | 150 |
| October | 15.8°C | 8.8°C | 65 mm | 0.3 | 111 |
| November | 11.5°C | 5.3°C | 67 mm | 2.7 | 68 |
| December | 8.8°C | 3.1°C | 57 mm | 7.2 | 53 |
| Year | 15.6°C | 7.8°C | 616 mm | 27 | 1,597 |
Met Office historic station data, Heathrow (London Airport), 1991–2020 months averaged (a month needs 20 of the 30 years; estimated values counted, missing months left out). Sunshine: Kipp & Zonen recorder.
How Walton-on-Thames 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 Surrey 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 |
|---|---|---|---|
| Walton-on-Thames | 23.3°C | 2.5°C | 644 mm |
| Hersham 1.2 mi | 23.0°C about the same | 2.4°C about the same | 676 mm |
| Upper Halliford 1.7 mi | 23.1°C about the same | 2.6°C about the same | 639 mm |
| Shepperton 1.8 mi | 23.5°C about the same | 2.5°C about the same | 639 mm |
| Weybridge 2.0 mi | 23.0°C about the same | 2.3°C about the same | 679 mm |
| Esher 2.2 mi | 23.3°C about the same | 2.3°C about the same | 645 mm |
| Sunbury-on-Thames 2.2 mi | 23.4°C about the same | 2.6°C about the same | 638 mm |
Walton-on-Thames 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 | 8.4°C 47°F | 2.5°C 36°F | 5.4°C | 62 mm 2.4 in |
| February | 8.9°C 48°F | 2.3°C 36°F | 5.6°C | 46 mm 1.8 in |
| March | 11.6°C 53°F | 3.6°C 39°F | 7.6°C | 40 mm 1.6 in |
| April | 14.8°C 59°F | 5.2°C 41°F | 10.0°C | 44 mm 1.7 in |
| May | 18.1°C 65°F | 8.1°C 47°F | 13.1°C | 45 mm 1.8 in |
| June | 21.1°C 70°F | 11.0°C 52°F | 16.1°C | 49 mm 1.9 in |
| July | 23.3°C 74°F | 13.1°C 56°F | 18.3°C | 46 mm 1.8 in |
| August | 23.0°C 73°F | 13.1°C 56°F | 18.1°C | 56 mm 2.2 in |
| September | 20.0°C 68°F | 10.6°C 51°F | 15.3°C | 53 mm 2.1 in |
| October | 15.7°C 60°F | 8.1°C 47°F | 11.9°C | 70 mm 2.8 in |
| November | 11.5°C 53°F | 4.9°C 41°F | 8.2°C | 71 mm 2.8 in |
| December | 8.7°C 48°F | 2.7°C 37°F | 5.7°C | 63 mm 2.5 in |
| Year | 15.4°C | 7.1°C | 11.3°C | 644 mm |
Where Walton-on-Thames’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 Walton-on-Thames’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 Heathrow (London Airport), 6.8 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 Walton-on-Thames’s climate
How warm does Walton-on-Thames get in summer?
July is the warmest month, with average highs of 23.3°C (74°F). About 23 days a year reach 25°C (77°F), more than 97% of UK towns.
How cold does Walton-on-Thames get in winter?
February nights average 2.3°C (36°F). The air drops below freezing on about 32 nights a year, and about under 1 days a year stay below freezing all day.
How much rain does Walton-on-Thames get?
About 644 mm (25 in) a year, less than 82% of UK towns. November is the wettest month (71 mm) and March the driest (40 mm).
How sunny is it?
The nearest Met Office station with a sunshine record, Heathrow (6.8 miles away), averages 1,597 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 Walton-on-Thames. 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 Walton-on-Thames →
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