Photo: Charlesdrakew · Public domainAfternoon heat in Coldwaltham beats that of 82% of UK towns
January mornings start at about 2.3°C (36°F). Of all months, November brings the most rain and May the least. Winters are mild: January nights here are milder than in 78% of UK towns. Picnics, hikes and garden evenings come into their own from June to September, with highs of 20–23°C.
Met Office 1991–2020 averages for the town itself.
A year in Coldwaltham at a glance
Each month’s typical high and low, in °C.
What a year in Coldwaltham feels like
Typical highs and lows by season and by month, from the Met Office’s 1991–2020 averages.
About 894 mm of rain a year
November is the wettest month and May the driest. About 29 days a year bring 10 mm (0.4 in) or more.
Rain by month
Millimetres
Sunshine by month
Hours of bright sunshine at Heathrow
46 air frosts and 17 days of 25°C a year
On about 46 nights a year the air drops below freezing, and on about under 1 days it stays below freezing all day. About 17 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 37 miles north of Coldwaltham, 25 m (82 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 | 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 Coldwaltham 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 West Sussex 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 |
|---|---|---|---|
| Coldwaltham | 22.6°C | 2.3°C | 894 mm |
| Pulborough 2.1 mi | 22.5°C about the same | 2.6°C about the same | 889 mm |
| Codmore Hill 2.6 mi | 22.2°C about the same | 2.6°C about the same | 885 mm |
| West Chiltington 3.8 mi | 22.3°C about the same | 2.4°C about the same | 963 mm |
| Storrington 4.2 mi | 22.3°C about the same | 2.0°C about the same | 965 mm |
| Petworth 4.3 mi | 22.7°C about the same | 2.0°C about the same | 915 mm |
| Abingworth 4.7 mi | 22.3°C about the same | 2.1°C about the same | 965 mm |
Coldwaltham 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 | 2.3°C 36°F | 5.3°C | 106 mm 4.2 in |
| February | 8.6°C 48°F | 1.9°C 35°F | 5.3°C | 69 mm 2.7 in |
| March | 11.5°C 53°F | 3.5°C 38°F | 7.5°C | 53 mm 2.1 in |
| April | 14.5°C 58°F | 4.8°C 41°F | 9.6°C | 60 mm 2.4 in |
| May | 17.7°C 64°F | 7.5°C 46°F | 12.6°C | 52 mm 2.0 in |
| June | 20.5°C 69°F | 10.3°C 51°F | 15.4°C | 55 mm 2.2 in |
| July | 22.6°C 73°F | 12.5°C 54°F | 17.5°C | 53 mm 2.1 in |
| August | 22.4°C 72°F | 12.2°C 54°F | 17.3°C | 64 mm 2.5 in |
| September | 19.6°C 67°F | 9.9°C 50°F | 14.8°C | 67 mm 2.6 in |
| October | 15.6°C 60°F | 7.4°C 45°F | 11.5°C | 103 mm 4.1 in |
| November | 11.5°C 53°F | 4.5°C 40°F | 8.0°C | 107 mm 4.2 in |
| December | 9.0°C 48°F | 2.6°C 37°F | 5.7°C | 105 mm 4.1 in |
| Year | 15.2°C | 6.6°C | 10.9°C | 894 mm |
Where Coldwaltham’s numbers come from
Averages over 30 years, not a forecast.
- Mean temperature, rain and day counts: HadUK-Grid 1991–2020 averages for the Met Office 2 km grid square nearest Coldwaltham’s centre (the town is smaller than one square).
- 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), 37 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 Coldwaltham’s climate
How warm does Coldwaltham get in summer?
July is the warmest month, with average highs of 22.6°C (73°F). About 17 days a year reach 25°C (77°F), more than 80% of UK towns.
How cold does Coldwaltham get in winter?
February nights average 1.9°C (35°F). The air drops below freezing on about 46 nights a year, and about under 1 days a year stay below freezing all day.
How much rain does Coldwaltham get?
About 894 mm (35 in) a year, more than 68% of UK towns. November is the wettest month (107 mm) and May the driest (52 mm).
How sunny is it?
The nearest Met Office station with a sunshine record, Heathrow (37 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 Coldwaltham. 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 Coldwaltham →
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