London vs New York Weather
Side-by-side climate comparison for travelers
Planning a trip from London to New York?
Weather can make or break a journey between London and New York. This page combines a same-period monthly climate baseline with current temperature, feels-like, wind, humidity, air quality and a 5-day forecast, so you can choose a season and then check the dates that matter.
London (UK) and New York (USA) have noticeably different climates. Use the live comparison below, pick your travel dates, and get packing suggestions tailored to conditions at your destination.
Monthly climate comparison (1991-2020)
Compare the usual temperature range and modeled precipitation before choosing travel dates. These long-term averages are climate context, not a forecast for a specific trip.
- Lowest combined modeled rainfall
- Feb: 122.2 mm (4.8 in) combined
- Largest average-high difference
- Jul: 6.6°C apart
| Month | LondonAverage high / low | New YorkAverage high / low | LondonMonthly precipitation | New YorkMonthly precipitation |
|---|---|---|---|---|
| Jan | 7.6 / 3.1°C (46 / 38°F) | 3.2 / -3.3°C (38 / 26°F) | 54.8 mm (2.2 in) | 81.6 mm (3.2 in) |
| Feb | 8.0 / 3.0°C (46 / 37°F) | 4.5 / -2.8°C (40 / 27°F) | 45.3 mm (1.8 in) | 76.9 mm (3.0 in) |
| Mar | 10.5 / 4.3°C (51 / 40°F) | 8.5 / 1.4°C (47 / 35°F) | 42.3 mm (1.7 in) | 104.9 mm (4.1 in) |
| Apr | 13.5 / 6.0°C (56 / 43°F) | 14.9 / 7.4°C (59 / 45°F) | 48.9 mm (1.9 in) | 90.8 mm (3.6 in) |
| May | 16.7 / 8.9°C (62 / 48°F) | 20.5 / 13.0°C (69 / 55°F) | 52.1 mm (2.1 in) | 85.0 mm (3.3 in) |
| Jun | 19.6 / 11.8°C (67 / 53°F) | 25.6 / 18.4°C (78 / 65°F) | 55.6 mm (2.2 in) | 100.2 mm (3.9 in) |
| Jul | 21.9 / 13.9°C (71 / 57°F) | 28.5 / 21.6°C (83 / 71°F) | 54.2 mm (2.1 in) | 102.6 mm (4.0 in) |
| Aug | 21.5 / 13.9°C (71 / 57°F) | 27.4 / 20.8°C (81 / 69°F) | 61.4 mm (2.4 in) | 101.4 mm (4.0 in) |
| Sep | 18.8 / 11.5°C (66 / 53°F) | 23.6 / 16.9°C (74 / 62°F) | 46.9 mm (1.8 in) | 93.8 mm (3.7 in) |
| Oct | 14.7 / 8.8°C (58 / 48°F) | 17.4 / 10.5°C (63 / 51°F) | 58.5 mm (2.3 in) | 96.6 mm (3.8 in) |
| Nov | 10.7 / 5.7°C (51 / 42°F) | 11.4 / 4.8°C (53 / 41°F) | 62.7 mm (2.5 in) | 77.4 mm (3.0 in) |
| Dec | 8.0 / 3.6°C (46 / 38°F) | 6.0 / 0.2°C (43 / 32°F) | 58.0 mm (2.3 in) | 100.2 mm (3.9 in) |
AnyWeather calculated both city baselines from daily ERA5 reanalysis for 1991-2020, retrieved through the Open-Meteo Historical Weather API. ERA5 combines models and observations on a grid; it is not a city-center station record. Local terrain, coastlines, elevation, urban heat, and storms can differ from these values.
London to New York: transatlantic weather decisions
The route changes time zone and weather regime. New York generally has larger temperature extremes, while London often requires planning around wind and intermittent rain. Compare the destination at local arrival time, not at the moment your flight leaves.
What changes through the year
| Period | London | New York | Decision |
|---|---|---|---|
| December-February | London may be cool, damp, windy, or occasionally icy. | New York can be substantially colder with snow, ice, and wind chill affecting street conditions. | Keep a proper winter layer accessible before landing; London clothing may not be enough for a New York cold outbreak. |
| March-May and September-November | Changeable rain and wind make hourly timing useful. | Fast frontal changes can produce a large temperature swing between arrival day and the next morning. | Pack one adjustable layer and check the next-day low, not only the arrival temperature. |
| June-August | Warm spells occur, but conditions can remain milder than New York. | Heat, humidity, warm nights, thunderstorms, and poor air-quality episodes can alter a walking-heavy itinerary. | Use New York's heat index and official alerts; schedule shade and indoor cooling rather than relying on London's departure weather. |
Route-specific checks
- Overnight flight
- Read New York's forecast in local time and include the morning low or afternoon heat at the actual arrival hour.
- First day on foot
- Account for jet lag as well as temperature. Reduce exposed walking during heat, ice, or strong wind and identify an indoor alternative.
- Potential disruption
- Check the Met Office before departure and NWS New York before arrival; weather may affect different parts of the itinerary independently.
How to interpret this comparison
A simultaneous snapshot can be misleading across time zones. Match each forecast to the local hour when you will be outdoors, then compare feels-like temperature, precipitation timing, and warnings.
Official warning sources
- Met Office warnings for London
Official UK warnings for the departure city.
- National Weather Service New York
Official watches, warnings, and advisories for the arrival region.
Route guidance reviewed July 16, 2026
How this comparison is produced
The live cards compare current observations and short forecasts; the monthly table uses the same ERA5 source and 1991-2020 reference period; route and packing context is maintained editorially. Weather changes quickly, so check again close to departure.
How the climates differ
London: London has a temperate oceanic climate with mild temperatures year-round. Rainfall is frequent but usually light. Summers are warm, winters are cool.
New York: New York has a humid subtropical climate with hot summers and cold winters. Expect snow in winter and occasional hurricanes in late summer.
Frequently asked questions
What is the weather difference between London and New York?
Use the monthly table for the usual temperature and rainfall difference, then use the live comparison for current temperature, feels-like, wind and humidity. Conditions change daily, so check again close to departure.
When is the best time to travel from London to New York?
London: May to September offers the warmest and driest weather, with long daylight hours perfect for sightseeing. New York: April to June (spring) and September to November (fall) offer the best weather for exploring the city. Compare the 5-day forecast and comfort scores on this page to pick the best arrival day.
What should I pack when traveling from London to New York?
Always carry an umbrella or rain jacket. Layered clothing works best due to changeable weather. Light jacket even in summer. For New York: Summer: Light clothing. Winter: Heavy coats, boots, hats, and gloves. Spring/Fall: Layers recommended. The packing recommendations below update based on live conditions at your destination.
Is this weather comparison free?
Yes. It's completely free with no signup. Enter your travel dates, compare both cities instantly, and get packing tips in your browser.