Climate Londres / Heathrow Airport Climate data 1999

Data reported by the weather station: 37720 (EGLL)
Latitude: 51.48 | Longitude: -0.45 | Altitude: 24

°F°C
mi/hkm/h

Average climatic values ​​and annual totals

To calculate annual averages, we analyzed data of 364 days (99.73% of year).

If in the average or annual total of some data is missing information of 10 or more days, this is not displayed.

The total rainfall value 0 (zero) may indicate that there has been no such measurement and / or the weather station does not broadcast.

DataValueComputed days
Average annual temperature:11.8°C364
Annual average maximum temperature:15.8°C364
Average annual minimum temperature:8.0°C364
Annual average humidity:74.3%362
Rain or snow precipitation total annual:727.52 mm364
Annual average visibility:20.5 Km364
Annual average wind speed:12.9 km/h364

To calculate the average temperature used 8707 measurements.
To calculate the average wind speed used 8707 measurements.

Total occurrences

Number of days with extraordinary phenomena.

Total days with rain:250
Total days with snow:17
Total days with thunderstorm:20
Total days with fog:20
Total days with tornado or funnel cloud:0
Total days with hail:3

Days of extreme historical values ​​in 1999

The highest temperature recorded was 32.7°C on 1 August.
The lowest temperature recorded was -5°C on 20 December.
The maximum wind speed recorded was 96.5 km/h on 3 December.

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