Greater London Climate and Average Weather
Climate of Greater London: average temperatures, rainfall and seasons month by month.
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).
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 |
Climate by city in Greater London
1 cities mapped in this atlas
Climate by river in Greater London
1 rivers mapped in this atlas
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.
What this means for Greater London
Today is about average for August. The forecast high of 75°F is in line with the 74°F typical for this month.
Rain is very unlikely today - plans do not need a backup.
No weather-related travel disruption is expected today. Roads and airports should run normally.
Northern Hemisphere, so peak summer falls in June to August.
The gap between the warmest and coldest month averages 60°F.
What to pack, what to skip
- Sunglasses, a brimmed hat and SPF 30+
- A packable rain shell - 4 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.
Summary
Greater London is a county in England. Greater London is a county or metropolitan area in the United Kingdom. It has a population of about 8.9 million.
Right now it is 61°F (16°C) in Greater London with clear. It feels like 60°F. Today runs from 59°F to 75°F. Chance of precipitation is 0%. Sightseeing conditions score 9.8/10 - excellent - go now.
The best time to visit Greater London is May, June, July and August. The climate is temperate. January, February and December tend to be the least comfortable months. July is the warmest month with average highs near 76°F, while January is the coldest with lows near 36°F.
The closest major airport is London Heathrow Airport (LHR), about 14 mi away. Nearby highlights include Big Ben and the Houses of Parliament, British Museum, Tower of London and River Thames.
In plain terms. Today is about average for August. The forecast high of 75°F is in line with the 74°F typical for this month. The best window to be outside is roughly 12 PM to 3 PM, when temperature, rain chance and wind line up best. sightseeing is the strongest bet in Greater London today at 9.8/10. No weather-related travel disruption is expected today. Roads and airports should run normally.
Compiled from this page's own data: atlas facts plus live Open-Meteo readings.
Quick facts about Greater London
| Type | County |
|---|---|
| Region | England |
| Country | United Kingdom |
| Continent | Europe |
| Coordinates | 51°30′26.6″N 0°7′40.1″W (51.5074, -0.1278) |
| Population | 8.900.000 |
| Local time | 1:52 PM (UTC+01:00) |
| Best months | May, June, July and August |
| Climate | Temperate |
Weather map for Greater London
Animated model layers. Pick a layer to load it.
Animated layers by Windy. For pin-level detail and nearby places, see the interactive map below.
Explore Greater London
Every topic we hold for this place, and the same topic for the places around it.
Climate 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 61°F (16°C) with clear. Humidity is 69% and wind is 3 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 1:52 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 23, 2026 at 1:52 PM local time. Live blocks refresh every 15 minutes; climate averages monthly.
