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Climate in Ham · Met Office 1991–2020 averages

Ham gets more frosts than 87% of UK towns

In July the day’s top temperature is typically 22.0°C (72°F). By warm days alone, it ranks hotter than 64% of UK towns. Seasons differ by 21°C, from the coldest nights to the warmest afternoons. Central heating does most of its work from November to April, in months below 10°C on average.

July afternoons: warmer than 64% of UK towns
January nights: colder than 76% of UK towns
Rain a year: wetter than 57% of UK towns

Met Office 1991–2020 averages for the town itself.

A year in Ham at a glance

Each month’s typical high and low, in °C.

Jan7°C1°C
Feb8°C1°CColdest nights
Mar10°C3°C
Apr14°C4°C
May17°C7°C
Jun20°C10°C
Jul22°C12°CWarmest
Aug22°C12°C
Sep19°C9°C
Oct14°C7°C
Nov now10°C4°CWettest
Dec8°C2°C
A normal year

What a year in Ham feels like

Typical highs and lows by season and by month, from the Met Office’s 1991–2020 averages.

Winter
8°C / 1°C
46°F / 35°F · 51 air frosts a year
Spring
14°C / 5°C
56°F / 40°F · 171 mm of rain
Summer
21°C / 11°C
70°F / 52°F · 13 days of 25°C+ a year
Autumn
14°C / 7°C
58°F / 44°F · 240 mm of rain, the wettest season
Best months to be outsideJunJulAugSepHighs of 17–27°C (63–81°F) and nights of 8°C (46°F) or more
Rain

About 820 mm of rain a year

November is the wettest month and June the driest. About 24 days a year bring 10 mm (0.4 in) or more.

820 mm
Rain a year (32 in)
Wetter than 57% of UK towns
24
Days a year with 10 mm of rain or more
1,615 hrs
Sunshine a year at Oxford
30 miles away

Rain by month

Millimetres

93 mm
JFMAMJJASOND

Sunshine by month

Hours of bright sunshine at Oxford

212 h
JFMAMJJASOND
Frost & warm days

A frosty town: 51 air frosts and 13 days of 25°C a year

On about 51 nights a year the air drops below freezing, and on about 2 days it stays below freezing all day. About 13 days a year reach 25°C (77°F).

51
Air frosts a year (below 0°C)
More frosts than 87% of UK towns
2
Days that stay below 0°C
13
Days of 25°C (77°F) or more
More warm days than 64% of UK towns

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.

Weather station

The Met Office station at Oxford

Oxford is 30 miles north of Ham, 63 m (207 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.

MonthHighLowRainAir frostsSun (hours)
January8.0°C2.4°C60 mm8.464
February8.6°C2.3°C47 mm7.682
March11.3°C3.6°C43 mm3.8118
April14.4°C5.3°C49 mm1.5166
May17.7°C8.2°C57 mm0.1200
June20.7°C11.1°C50 mm0.0198
July23.1°C13.1°C53 mm0.0212
August22.5°C13.0°C62 mm0.0193
September19.4°C10.7°C52 mm0.0145
October15.1°C8.0°C73 mm0.7110
November10.9°C4.9°C72 mm3.271
December8.2°C2.6°C66 mm8.657
Year15.0°C7.1°C681 mm341,615

Met Office historic station data, Oxford, 1991–2020 months averaged (a month needs 20 of the 30 years; estimated values counted, missing months left out). Sunshine: Campbell-Stokes recorder.

Compared with other towns

How Ham 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 Wiltshire towns that size.

July afternoons22.0°C (72°F)
Warmer than 64% of UK towns
January nights1.4°C (35°F)
Colder than 76% of UK towns
Rain a year820 mm (32 in)
Wetter than 57% of UK towns
Air frosts a year51 nights
More frosts than 87% of UK towns
Days of 25°C or more13 days
More warm days than 64% of UK towns
Next door

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.

TownJuly highJanuary lowRain a year
Ham22.0°C1.4°C820 mm
Hungerford 3.3 mi22.1°C about the same1.5°C about the same792 mm
Great Bedwyn 3.4 mi21.8°C about the same1.4°C about the same875 mm
Kintbury 4.0 mi22.3°C about the same1.5°C about the same781 mm
Burbage 6.2 mi21.6°C about the same1.3°C about the same870 mm
Woolton Hill and Highclere 6.3 mi21.8°C about the same1.4°C about the same894 mm
Ramsbury 6.4 mi21.8°C about the same1.4°C about the same846 mm
Month by month

Ham weather by month

Average daily high and low, mean temperature and rain, 1991–2020, for the town itself (the Met Office’s HadUK-Grid).

MonthHighLowMeanRain
January7.3°C 45°F1.4°C 35°F4.4°C89 mm 3.5 in
February7.8°C 46°F1.3°C 34°F4.6°C61 mm 2.4 in
March10.5°C 51°F2.6°C 37°F6.5°C54 mm 2.1 in
April13.5°C 56°F4.1°C 39°F8.8°C60 mm 2.4 in
May16.8°C 62°F6.9°C 44°F11.8°C56 mm 2.2 in
June19.7°C 67°F9.7°C 49°F14.7°C53 mm 2.1 in
July22.0°C 72°F11.7°C 53°F16.8°C60 mm 2.3 in
August21.6°C 71°F11.6°C 53°F16.6°C59 mm 2.3 in
September18.7°C 66°F9.4°C 49°F14.1°C59 mm 2.3 in
October14.4°C 58°F7.0°C 45°F10.8°C88 mm 3.5 in
November10.3°C 51°F4.0°C 39°F7.2°C93 mm 3.7 in
December7.8°C 46°F1.7°C 35°F4.8°C87 mm 3.4 in
Year14.2°C6.0°C10.1°C820 mm
Sources

Where Ham’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 Ham’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 Oxford, 30 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 Ham’s climate

How warm does Ham get in summer?

July is the warmest month, with average highs of 22.0°C (72°F). About 13 days a year reach 25°C (77°F), more than 64% of UK towns.

How cold does Ham get in winter?

February nights average 1.3°C (34°F). The air drops below freezing on about 51 nights a year, and about 2 days a year stay below freezing all day.

How much rain does Ham get?

About 820 mm (32 in) a year, more than 57% of UK towns. November is the wettest month (93 mm) and June the driest (53 mm).

How sunny is it?

The nearest Met Office station with a sunshine record, Oxford (30 miles away), averages 1,615 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 Ham. 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 Ham →

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.