WeatherArchive / Compare cities / Denver vs London
Denver vs London weather: climate comparison
London is the warmer of the two, averaging 52°F (11°C) over the year against 49°F (10°C) in Denver. London is wetter, with 26.4 in (671 mm) of precipitation a year to Denver's 18.7 in (474 mm). Below: every month side by side, from 30 years of ERA5 data (1996–2025).
- Mean temperature
- 9.6°C Denver
10.9°C London - Annual precipitation
- 474.1 mm Denver
671.0 mm London - Rainy days a year
- 81 Denver
128 London - Sunshine per day
- 10.5 h Denver
7.5 h London
Month by month
| Month | Denver | London |
|---|---|---|
| January | 4.9°C | 7.3°C |
| February | 6.0°C | 8.3°C |
| March | 11.2°C | 10.6°C |
| April | 15.2°C | 13.7°C |
| May | 20.4°C | 16.9°C |
| June | 27.3°C | 20.1°C |
| July | 30.6°C | 21.9°C |
| August | 29.3°C | 21.6°C |
| September | 25.5°C | 19.1°C |
| October | 17.9°C | 15.1°C |
| November | 10.8°C | 10.6°C |
| December | 5.4°C | 8.0°C |
Year at a glance
| Measure | Denver | London |
|---|---|---|
| Mean annual temperature | 9.6°C | 10.9°C |
| Warmest month (avg high) | Jul · 31°C | Jul · 22°C |
| Coldest month (avg low) | Jan · -9°C | Jan · 2°C |
| Annual range (warmest high − coldest low) | 40°C | 20°C |
| Annual precipitation | 474.1 mm | 671.0 mm |
| Rainy days per year | 81 | 128 |
| Wettest / driest month | May / Dec | Nov / Mar |
| Average sunshine per day | 10.5 h | 7.5 h |
In short: London is the warmest overall (10.9°C mean); London gets the most precipitation (671.0 mm a year); Denver is the sunniest (10.5 h a day on average); London has the smallest swing between its warmest and coldest months.
Record high 1996–2025: Denver 38.7°C (2025-06-21), London 37.9°C (2022-07-19). Record low: Denver -36.5°C (2024-01-16), London -10.3°C (2021-02-11).
Source: Open-Meteo Historical Weather API (CC BY 4.0). Values are ERA5 reanalysis model data on a ~9–25 km grid, not readings from a weather station, so a single town’s thermometer can differ by a few degrees and local showers can be missed. Monthly means of daily ERA5 values, 1996–2025, for the grid cells nearest Denver (39.75, -105.02) and London (51.49, -0.16).
Which months differ most?
The gap in average highs is widest in July, when Denver runs 16°F / 9°C warmer, and narrowest in November (0°F / 0°C apart). The biggest rainfall difference is in November: London gets 1.7 in (43 mm) more on average.
Add a third or fourth city, or swap in any other place, in the full comparison tool. For one city in depth, see the Denver climate and London climate pages.
Compare Denver or London with another city
Questions people ask
Is Denver warmer than London?
London is warmer on average: its mean annual temperature is 52°F (11°C) against 49°F (10°C) in Denver (ERA5, 1996–2025).
Which gets more rain, Denver or London?
London, with about 26.4 in (671 mm) of precipitation a year and 128 days with at least 1 mm, compared with 18.7 in (474 mm) and 81 days in Denver.
Which is sunnier, Denver or London?
Denver averages more sunshine: 10.5 h a day against 7.5 h. Sunshine duration is modelled from cloud cover.
How reliable is this comparison?
Both cities use the same 30-year reanalysis, so differences are consistent. Absolute values describe a grid cell several kilometres wide and can differ by a degree or two from the airport station.