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Geonivora
Mountain

Porton Down

Located in Idmiston, Wiltshire Coordinates: 51°07′00″ N 1°42′00″ W

Map showing the location of Porton Down Porton Down
Location in United Kingdom
Elevation
124 m
above sea level
Nearest town
Middle Winterslow
4.1 km SE
Local time
UTC+00:00
Europe/London · UTC+00:00
When to go
June–August
See the climate
Airports
SOU Southampton Airport30 km
BOH Bournemouth Airport39 km

About Porton Down

Porton Down is a mountain. Location: Idmiston, Wiltshire. Elevation: 124 m. The best months to visit are June–August. The nearest airport is Southampton Airport (30 km). Nearby sights include Battery Hill and Thorny Down.

Climate of Porton Down

Best months for sightseeing

Best months for sightseeing: June–August.

This month · November

A cold month

Day 10° · Night 4° · Rain 76 mm

Hottest month
July (day 21°)
Coldest month
February (night 1°)
Wettest month
December (83 mm)
Driest month
July (39 mm)

Bars: average monthly low and high temperature. Below: precipitation. Monthly averages for 1970–2000 at about 18 km resolution, adjusted for elevation. Highlighted months are mild and relatively dry. Source: WorldClim 2.1 (CC BY 4.0).

Show values as a table
Climate of Porton Down
Month JanFebMarAprMayJunJulAugSepOctNovDec
Average high (°C)7°7°10°12°16°19°21°21°18°14°10°8°
Average low (°C)1°1°2°3°7°9°11°11°9°7°4°2°
Precipitation (mm)805360464854395465707683

Other places to visit in this season: June July August

How to get to Porton Down

The nearest airport is Southampton Airport (SOU), 30 km to the southeast as the crow flies. For international flights: Bristol Airport (BRS) (77 km). The nearest large city is Southampton, 31 km to the southeast.

Airports

  • Southampton Airport (SOU) Southampton 30 kmsoutheast
  • Bournemouth Airport (BOH) Bournemouth 39 kmsouth
  • Bristol Airport (BRS) Bristol 77 kmnorthwest

Nearby large cities

  • Southampton Population: 269.8K 31 kmsoutheast
  • Basingstoke Population: 107.6K 46 kmeast
  • Bournemouth Population: 163.6K 46 kmsouth
  • Poole Population: 151.5K 49 kmsouthwest
  • Swindon Population: 201.7K 49 kmnorth

Straight-line distances; road distances are longer. Airport data: OurAirports.

Day trips from Porton Down

Within 100 km: 459 historic and cultural sites, 862 natural sites, 241 lakes, rivers and coasts.

0–25 km79 places

  • Harnham Water Meadows Island 9 kmSW
  • Ham Island Island 12 kmS
  • Swan Island Island 15 kmE
  • Great Island Island 9 kmSW

25–60 km499 places

  • Portsea Island Natural site 57 kmSE
  • Isle of Wight Island 57 kmSE
  • Brownsea Island Island 51 kmS
  • Avon Beach Beach 43 kmS

60–100 km984 places

  • Chesil Beach Beach 81 kmSW
  • Man O'War Beach Beach 68 kmSW
  • Charmouth Beach Beach 94 kmSW
  • Climping Beach Beach 87 kmSE

Straight-line distances.

Nearest towns and villages

Nearby attractions & nature

Everything nearby

Sources & licences

Data last updated: