Photo: Alan Stewart · CC BY-SA 2.0Summer afternoons in Chilworth are warmer than in 87% of UK towns
Deep winter brings January lows near 2.6°C (37°F). In January, nights here are milder than in 87% of UK towns. Only 20°C separates winter nights from summer afternoons. Expect about 35 frosty starts a year, nights when the air falls below freezing.
Met Office 1991–2020 averages for the town itself.
A year in Chilworth at a glance
Each month’s typical high and low, in °C.
What a year in Chilworth feels like
Typical highs and lows by season and by month, from the Met Office’s 1991–2020 averages.
About 838 mm of rain a year
November is the wettest month and May the driest. About 28 days a year bring 10 mm (0.4 in) or more.
Rain by month
Millimetres
Sunshine by month
Hours of bright sunshine at Hurn (Bournemouth Airport)
35 air frosts and 18 days of 25°C a year
On about 35 nights a year the air drops below freezing, and on about under 1 days it stays below freezing all day. About 18 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 Hurn (Bournemouth Airport)
Hurn (Bournemouth Airport) is 23 miles south-west of Chilworth, 10 m (33 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 | 8.8°C | 1.8°C | 96 mm | 11.1 | 65 |
| February | 9.1°C | 1.6°C | 67 mm | 10.9 | 80 |
| March | 11.4°C | 2.8°C | 62 mm | 8.3 | 122 |
| April | 14.2°C | 4.3°C | 58 mm | 4.7 | 178 |
| May | 17.4°C | 7.3°C | 49 mm | 0.6 | 211 |
| June | 20.1°C | 10.2°C | 54 mm | 0.0 | 217 |
| July | 22.3°C | 12.2°C | 50 mm | 0.0 | 221 |
| August | 22.0°C | 12.0°C | 60 mm | 0.0 | 198 |
| September | 19.6°C | 9.6°C | 69 mm | 0.0 | 156 |
| October | 15.6°C | 7.4°C | 101 mm | 2.2 | 108 |
| November | 11.8°C | 4.1°C | 108 mm | 6.9 | 76 |
| December | 9.2°C | 2.0°C | 104 mm | 11.6 | 59 |
| Year | 15.1°C | 6.3°C | 877 mm | 56 | 1,690 |
Met Office historic station data, Hurn, 1991–2020 months averaged (a month needs 20 of the 30 years; estimated values counted, missing months left out). Sunshine: Kipp & Zonen recorder.
How Chilworth 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 Hampshire 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 |
|---|---|---|---|
| Chilworth | 22.8°C | 2.6°C | 838 mm |
| Chandler's Ford 2.1 mi | 22.7°C about the same | 2.3°C about the same | 872 mm |
| North Baddesley 2.2 mi | 22.4°C about the same | 2.4°C about the same | 855 mm |
| Rownhams and Nursling 2.6 mi | 22.6°C about the same | 2.7°C about the same | 847 mm |
| Eastleigh 2.6 mi | 22.7°C about the same | 2.5°C about the same | 853 mm |
| Southampton 2.8 mi | 22.9°C about the same | 2.9°C about the same | 851 mm |
| West End 3.3 mi | 22.7°C about the same | 2.7°C about the same | 874 mm |
Chilworth 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 | 8.6°C 47°F | 2.6°C 37°F | 5.6°C | 95 mm 3.7 in |
| February | 9.3°C 49°F | 2.6°C 37°F | 6.0°C | 64 mm 2.5 in |
| March | 11.8°C 53°F | 4.0°C 39°F | 7.9°C | 56 mm 2.2 in |
| April | 14.9°C 59°F | 5.7°C 42°F | 10.2°C | 56 mm 2.2 in |
| May | 18.1°C 65°F | 8.6°C 47°F | 13.3°C | 48 mm 1.9 in |
| June | 20.8°C 69°F | 11.3°C 52°F | 16.1°C | 55 mm 2.2 in |
| July | 22.8°C 73°F | 13.2°C 56°F | 18.1°C | 52 mm 2.0 in |
| August | 22.6°C 73°F | 13.2°C 56°F | 17.9°C | 63 mm 2.5 in |
| September | 20.0°C 68°F | 11.0°C 52°F | 15.5°C | 59 mm 2.3 in |
| October | 15.9°C 61°F | 8.4°C 47°F | 12.2°C | 93 mm 3.7 in |
| November | 11.9°C 53°F | 5.3°C 41°F | 8.5°C | 102 mm 4.0 in |
| December | 9.2°C 49°F | 3.0°C 37°F | 6.2°C | 95 mm 3.7 in |
| Year | 15.5°C | 7.4°C | 11.4°C | 838 mm |
Where Chilworth’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 Chilworth’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 Hurn, 23 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 Chilworth’s climate
How warm does Chilworth get in summer?
July is the warmest month, with average highs of 22.8°C (73°F). About 18 days a year reach 25°C (77°F), more than 84% of UK towns.
How cold does Chilworth get in winter?
January nights average 2.6°C (37°F). The air drops below freezing on about 35 nights a year, and about under 1 days a year stay below freezing all day.
How much rain does Chilworth get?
About 838 mm (33 in) a year, more than 60% of UK towns. November is the wettest month (102 mm) and May the driest (48 mm).
How sunny is it?
The nearest Met Office station with a sunshine record, Hurn (Bournemouth Airport) (23 miles away), averages 1,690 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 Chilworth. 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 Chilworth →
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.