Greater London Weather Forecast
Greater London weather: 75°F, clear sky. Hourly forecast, 14-day outlook, UV, air quality and the best time to visit.
Climate in Greater London month by month
Average high, average low and total rainfall, based on three years of reanalysis data.
| Month | Avg high | Avg low | Rainfall | Rating |
|---|---|---|---|---|
| January | 45° | 36° | 3,5 in | ★★★☆☆ |
| February | 50° | 41° | 3,3 in | ★★★☆☆ |
| March | 54° | 41° | 1,6 in | ★★★★☆ |
| April | 61° | 45° | 1,3 in | ★★★★☆ |
| May | 68° | 51° | 1,8 in | ★★★★☆ |
| June | 73° | 56° | 2,0 in | ★★★★★ |
| July | 76° | 60° | 2,2 in | ★★★★☆ |
| August | 74° | 58° | 1,0 in | ★★★★★ |
| September | 69° | 54° | 3,8 in | ★★★★☆ |
| October | 61° | 49° | 3,1 in | ★★★★☆ |
| November | 52° | 43° | 3,0 in | ★★★☆☆ |
| December | 49° | 42° | 2,5 in | ★★★☆☆ |
Climate type: Temperate. Source: Open-Meteo archive (ERA5).
Best time to visit Greater London
Go in May, June, July and August. These months score highest on comfortable temperatures, low rainfall and useful daylight.
Hardest months: January, February and December - expect the least comfortable mix of heat, cold or rain.
Recent extremes in Greater London
Highest and lowest readings observed in the last 3 years of reanalysis data - not all-time records.
How Greater London compares with nearby places
Annual averages, and the difference against Greater London.
| Place | Distance | Avg temp | vs here | Annual rain |
|---|---|---|---|---|
| London Gatwick Airport | 25 mi | 53°F | 33°F cooler | 32 in |
| Kent | 32 mi | 53°F | 33°F cooler | 29 in |
| Sussex | 43 mi | 53°F | 33°F cooler | 34 in |
| Brighton | 47 mi | 54°F | about the same | 38 in |
| Cambridge | 49 mi | 53°F | 33°F cooler | 27 in |
What to pack, what to skip
- Sunglasses, a brimmed hat and SPF 30+
- A packable rain shell - 5 of the next 7 days carry a real chance of rain
- If your dates are flexible, avoid January, February and December - historically the least comfortable months here.
See the Greater London forecast by time range
Greater London weather - more answers
Explore Greater London
Every topic we hold for this place, and the same topic for the places around it.
Weather for related places
Frequently asked questions
Where is Greater London?
Greater London is a county in England. Its coordinates are 51.5074, -0.1278. It lies in Europe.
What is the weather like in Greater London right now?
It is currently 75°F (24°C) with clear sky. Humidity is 41% and wind is 10 mph.
When is the best time to visit Greater London?
May, June, July and August offer the most comfortable conditions in Greater London, which has a temperate climate. January, February and December are usually the hardest months for outdoor plans.
What time zone is Greater London in?
Greater London observes Europe/London (UTC+01:00). The local time is 2:42 PM.
How many people live in Greater London?
Greater London has a population of approximately 8.9 million.
What is the nearest airport to Greater London?
The closest airports are London Heathrow Airport (LHR), 14 mi away, London Gatwick Airport (LGW), 25 mi away and Paris Charles de Gaulle Airport (CDG), 209 mi away.
What are the top things to do in Greater London?
Popular options include Big Ben and the Houses of Parliament, British Museum, Tower of London, River Thames, Stonehenge and Stonehenge, Avebury and Associated Sites.
What places are in Greater London?
Greater London covers 2 places in this atlas, including London and River Thames.
Related articles
Data sources and methodology
| Place data | USPOTUS Atlas dataset (uk-regions) - coordinates, hierarchy and facts. |
|---|---|
| Forecast and observations | Open-Meteo (ECMWF and national models). |
| Air quality and pollen | Copernicus CAMS via Open-Meteo. US AQI scale. |
| Climate averages | ERA5 reanalysis via the Open-Meteo archive, aggregated over 3 years. |
| Method | Scores, comparisons and advice on this page are computed from the inputs above. Distances are straight-line. Nothing is estimated where data is missing - the block is simply not shown. |
Last updated August 25, 2026 at 2:42 PM local time. Live blocks refresh every 15 minutes; climate averages monthly.
